ADC bugfixes plus new DAC logic from Lzyy
git-svn-id: https://nuttx.svn.sourceforge.net/svnroot/nuttx/trunk@3913 7fd9a85b-ad96-42d3-883c-3090e2eb8679
This commit is contained in:
patacongo
parent
12c64bc38b
commit
3b5a4d48fb
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@ -2023,4 +2023,8 @@
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circles -- both circular outlines and filled circles.
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* graphic/nxglib/nxglib_spitline.c: Add a "fudge factor" that eliminates
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some problems for rendering nearly horizontal, wide lines.
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* drivers/analog, include/nuttx/analog, arch/arch/src/lpcxx: (1) Add
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updates to the ADS1255 driver, (2) fix errors from my last merge (sorry),
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(3) Add DAC infrastructure, (4) add AD5410 DAC driver, and (5) add
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LPC17xx ADC and DAC drivers. All contributed by Li Zhuoyi (Lzyy).
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@ -88,3 +88,11 @@ ifeq ($(CONFIG_LPC17_ETHERNET),y)
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CHIP_CSRCS += lpc17_ethernet.c
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endif
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endif
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ifeq ($(CONFIG_LPC17_ADC),y)
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CHIP_CSRCS += lpc17_adc.c
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endif
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ifeq ($(CONFIG_LPC17_DAC),y)
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CHIP_CSRCS += lpc17_dac.c
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endif
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@ -0,0 +1,268 @@
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/************************************************************************************
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* arch/arm/src/lpc17xx/lpc17_adc.c
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*
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* Copyright (C) 2011 Li Zhuoyi. All rights reserved.
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* Author: Li Zhuoyi <lzyy.cn@gmail.com>
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* History: 0.1 2011-08-05 initial version
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*
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* This file is a part of NuttX:
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*
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* Copyright (C) 2010 Gregory Nutt. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
|
||||
* are met:
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||||
*
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||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
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||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in
|
||||
* the documentation and/or other materials provided with the
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||||
* distribution.
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||||
* 3. Neither the name NuttX nor the names of its contributors may be
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||||
* used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
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||||
*
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||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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||||
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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||||
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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||||
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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||||
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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||||
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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************************************************************************************/
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#include <nuttx/config.h>
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#include <stdio.h>
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#include <sys/types.h>
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#include <stdint.h>
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#include <stdbool.h>
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#include <semaphore.h>
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#include <errno.h>
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#include <debug.h>
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#include <arch/board/board.h>
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#include <nuttx/arch.h>
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#include <nuttx/analog/adc.h>
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#include "up_internal.h"
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#include "up_arch.h"
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#include "chip.h"
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#include "lpc17_internal.h"
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#include "lpc17_syscon.h"
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#include "lpc17_pinconn.h"
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#include "lpc17_adc.h"
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#if defined(CONFIG_LPC17_ADC)
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#ifndef CONFIG_ADC0_MASK
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#define CONFIG_ADC0_MASK 0x01
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#endif
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#ifndef CONFIG_ADC0_SPS
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#define CONFIG_ADC0_SPS 1000
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#endif
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#ifndef CONFIG_ADC0_AVERAGE
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#define CONFIG_ADC0_AVERAGE 200
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#endif
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/****************************************************************************
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* ad_private Types
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****************************************************************************/
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struct up_dev_s
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{
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uint8_t mask;
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uint32_t sps;
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int irq;
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int32_t buf[8];
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uint8_t count[8];
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};
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/****************************************************************************
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* ad_private Function Prototypes
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****************************************************************************/
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/* ADC methods */
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static void adc_reset(FAR struct adc_dev_s *dev);
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static int adc_setup(FAR struct adc_dev_s *dev);
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static void adc_shutdown(FAR struct adc_dev_s *dev);
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static void adc_rxint(FAR struct adc_dev_s *dev, bool enable);
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static int adc_ioctl(FAR struct adc_dev_s *dev, int cmd, unsigned long arg);
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static int adc_interrupt(int irq, void *context);
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/****************************************************************************
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* ad_private Data
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****************************************************************************/
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static const struct adc_ops_s g_adcops =
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{
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.ao_reset =adc_reset,
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.ao_setup = adc_setup,
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.ao_shutdown = adc_shutdown,
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.ao_rxint = adc_rxint,
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.ao_ioctl = adc_ioctl,
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};
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static struct up_dev_s g_adcpriv =
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{
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.sps = CONFIG_ADC0_SPS,
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.mask = CONFIG_ADC0_MASK,
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.irq = LPC17_IRQ_ADC,
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};
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static struct adc_dev_s g_adcdev =
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{
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.ad_ops = &g_adcops,
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.ad_priv= &g_adcpriv,
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};
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/****************************************************************************
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* ad_private Functions
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****************************************************************************/
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/* Reset the ADC device. Called early to initialize the hardware. This
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* is called, before ao_setup() and on error conditions.
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*/
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static void adc_reset(FAR struct adc_dev_s *dev)
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{
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irqstate_t flags;
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uint32_t regval;
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FAR struct up_dev_s *priv = (FAR struct up_dev_s *)dev->ad_priv;
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flags = irqsave();
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regval = getreg32(LPC17_SYSCON_PCONP);
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regval |= SYSCON_PCONP_PCADC;
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putreg32(regval, LPC17_SYSCON_PCONP);
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putreg32(ADC_CR_PDN,LPC17_ADC_CR);
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regval = getreg32(LPC17_SYSCON_PCLKSEL0);
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regval &= ~SYSCON_PCLKSEL0_ADC_MASK;
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regval |= (SYSCON_PCLKSEL_CCLK8 << SYSCON_PCLKSEL0_ADC_SHIFT);
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putreg32(regval, LPC17_SYSCON_PCLKSEL0);
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uint32_t clkdiv=LPC17_CCLK/8/65/priv->sps;
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clkdiv<<=8;
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clkdiv&=0xff00;
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putreg32(ADC_CR_PDN|ADC_CR_BURST|clkdiv|priv->mask,LPC17_ADC_CR);
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if(priv->mask&0x01)
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lpc17_configgpio(GPIO_AD0p0);
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else if(priv->mask&0x02)
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lpc17_configgpio(GPIO_AD0p1);
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else if(priv->mask&0x04)
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lpc17_configgpio(GPIO_AD0p2);
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else if(priv->mask&0x08)
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lpc17_configgpio(GPIO_AD0p3);
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else if(priv->mask&0x10)
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lpc17_configgpio(GPIO_AD0p4);
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else if(priv->mask&0x20)
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lpc17_configgpio(GPIO_AD0p5);
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else if(priv->mask&0x40)
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lpc17_configgpio(GPIO_AD0p6);
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else if(priv->mask&0x80)
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lpc17_configgpio(GPIO_AD0p7);
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irqrestore(flags);
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}
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/* Configure the ADC. This method is called the first time that the ADC
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* device is opened. This will occur when the port is first opened.
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* This setup includes configuring and attaching ADC interrupts. Interrupts
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* are all disabled upon return.
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*/
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static int adc_setup(FAR struct adc_dev_s *dev)
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{
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int i;
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FAR struct up_dev_s *priv = (FAR struct up_dev_s *)dev->ad_priv;
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int ret = irq_attach(priv->irq, adc_interrupt);
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if (ret == OK)
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{
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for(i=0;i<8;i++)
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{
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priv->buf[i]=0;
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priv->count[i]=0;
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}
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up_enable_irq(priv->irq);
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}
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return ret;
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}
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/* Disable the ADC. This method is called when the ADC device is closed.
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* This method reverses the operation the setup method.
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*/
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static void adc_shutdown(FAR struct adc_dev_s *dev)
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{
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FAR struct up_dev_s *priv = (FAR struct up_dev_s *)dev->ad_priv;
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up_disable_irq(priv->irq);
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irq_detach(priv->irq);
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}
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/* Call to enable or disable RX interrupts */
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static void adc_rxint(FAR struct adc_dev_s *dev, bool enable)
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{
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FAR struct up_dev_s *priv = (FAR struct up_dev_s *)dev->ad_priv;
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if (enable)
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putreg32(ADC_INTEN_GLOBAL,LPC17_ADC_INTEN);
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else
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putreg32(0x00,LPC17_ADC_INTEN);
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}
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/* All ioctl calls will be routed through this method */
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static int adc_ioctl(FAR struct adc_dev_s *dev, int cmd, unsigned long arg)
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{
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dbg("Fix me:Not Implemented\n");
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return 0;
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}
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static int adc_interrupt(int irq, void *context)
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{
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uint32_t regval;
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FAR struct up_dev_s *priv = (FAR struct up_dev_s *)g_adcdev.ad_priv;
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unsigned char ch;
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int32_t value;
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regval=getreg32(LPC17_ADC_GDR);
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ch=(regval>>24)&0x07;
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priv->buf[ch]+=regval&0xfff0;
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priv->count[ch]++;
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if(priv->count[ch]>=CONFIG_ADC0_AVERAGE)
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{
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value=priv->buf[ch]/priv->count[ch];
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value<<=15;
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adc_receive(&g_adcdev,ch,value);
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priv->buf[ch]=0;
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priv->count[ch]=0;
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}
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return OK;
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}
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: up_adcinitialize
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*
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* Description:
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* Initialize the adc
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*
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* Returned Value:
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* Valid can device structure reference on succcess; a NULL on failure
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*
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****************************************************************************/
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FAR struct adc_dev_s *up_adcinitialize( )
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{
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return &g_adcdev;
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}
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#endif
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@ -0,0 +1,190 @@
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/************************************************************************************
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* arch/arm/src/lpc17xx/lpc17_dac.c
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*
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* Copyright (C) 2011 Li Zhuoyi. All rights reserved.
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* Author: Li Zhuoyi <lzyy.cn@gmail.com>
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* History: 0.1 2011-08-05 initial version
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*
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* This file is a part of NuttX:
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*
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* Copyright (C) 2010 Gregory Nutt. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
|
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* modification, are permitted provided that the following conditions
|
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* are met:
|
||||
*
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in
|
||||
* the documentation and/or other materials provided with the
|
||||
* distribution.
|
||||
* 3. Neither the name NuttX nor the names of its contributors may be
|
||||
* used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
||||
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
||||
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
||||
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
||||
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
|
||||
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
||||
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
||||
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
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* POSSIBILITY OF SUCH DAMAGE.
|
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*
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************************************************************************************/
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#include <nuttx/config.h>
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#include <stdio.h>
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#include <sys/types.h>
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#include <stdint.h>
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#include <stdbool.h>
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#include <semaphore.h>
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#include <errno.h>
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#include <debug.h>
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#include <arch/board/board.h>
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#include <nuttx/arch.h>
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#include <nuttx/analog/dac.h>
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#include "up_internal.h"
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#include "up_arch.h"
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#include "chip.h"
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#include "lpc17_internal.h"
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#include "lpc17_syscon.h"
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#include "lpc17_pinconn.h"
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#include "lpc17_dac.h"
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#if defined(CONFIG_LPC17_DAC)
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/****************************************************************************
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* ad_private Types
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****************************************************************************/
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/****************************************************************************
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* ad_private Function Prototypes
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****************************************************************************/
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/* DAC methods */
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static void dac_reset(FAR struct dac_dev_s *dev);
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static int dac_setup(FAR struct dac_dev_s *dev);
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static void dac_shutdown(FAR struct dac_dev_s *dev);
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static void dac_txint(FAR struct dac_dev_s *dev, bool enable);
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static int dac_send(FAR struct dac_dev_s *dev, FAR struct dac_msg_s *msg);
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static int dac_ioctl(FAR struct dac_dev_s *dev, int cmd, unsigned long arg);
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static int dac_interrupt(int irq, void *context);
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/****************************************************************************
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* ad_private Data
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****************************************************************************/
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static const struct dac_ops_s g_dacops =
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{
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.ao_reset =dac_reset,
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.ao_setup = dac_setup,
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.ao_shutdown = dac_shutdown,
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.ao_txint = dac_txint,
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.ao_send = dac_send,
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.ao_ioctl = dac_ioctl,
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};
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static struct dac_dev_s g_dacdev =
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{
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.ad_ops = &g_dacops,
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};
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/****************************************************************************
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* ad_private Functions
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****************************************************************************/
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/* Reset the DAC device. Called early to initialize the hardware. This
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* is called, before ao_setup() and on error conditions.
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*/
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static void dac_reset(FAR struct dac_dev_s *dev)
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{
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irqstate_t flags;
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uint32_t regval;
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flags = irqsave();
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regval = getreg32(LPC17_SYSCON_PCLKSEL0);
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regval &= ~SYSCON_PCLKSEL0_DAC_MASK;
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regval |= (SYSCON_PCLKSEL_CCLK8 << SYSCON_PCLKSEL0_DAC_SHIFT);
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putreg32(regval, LPC17_SYSCON_PCLKSEL0);
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//putreg32(DAC_CTRL_DBLBUFEN,LPC17_DAC_CTRL); ?
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lpc17_configgpio(GPIO_AOUT);
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irqrestore(flags);
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}
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/* Configure the DAC. This method is called the first time that the DAC
|
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* device is opened. This will occur when the port is first opened.
|
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* This setup includes configuring and attaching DAC interrupts. Interrupts
|
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* are all disabled upon return.
|
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*/
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static int dac_setup(FAR struct dac_dev_s *dev)
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{
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return OK;
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}
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/* Disable the DAC. This method is called when the DAC device is closed.
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* This method reverses the operation the setup method.
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*/
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static void dac_shutdown(FAR struct dac_dev_s *dev)
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{
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}
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/* Call to enable or disable TX interrupts */
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static void dac_txint(FAR struct dac_dev_s *dev, bool enable)
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{
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}
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static int dac_send(FAR struct dac_dev_s *dev, FAR struct dac_msg_s *msg)
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{
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putreg32((msg->am_data>>16)&0xfffff,LPC17_DAC_CR);
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dac_txdone(&g_dacdev);
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return 0;
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}
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/* All ioctl calls will be routed through this method */
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static int dac_ioctl(FAR struct dac_dev_s *dev, int cmd, unsigned long arg)
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{
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dbg("Fix me:Not Implemented\n");
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return 0;
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}
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static int dac_interrupt(int irq, void *context)
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{
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}
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/****************************************************************************
|
||||
* Public Functions
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Name: up_dacinitialize
|
||||
*
|
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* Description:
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* Initialize the DAC
|
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*
|
||||
* Returned Value:
|
||||
* Valid dac device structure reference on succcess; a NULL on failure
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
FAR struct dac_dev_s *up_dacinitialize()
|
||||
{
|
||||
return &g_dacdev;
|
||||
}
|
||||
#endif
|
||||
|
||||
|
|
@ -41,8 +41,13 @@ ifeq ($(CONFIG_DAC),y)
|
|||
|
||||
# Include the common ADC character driver
|
||||
|
||||
CSRCS += dac.c
|
||||
|
||||
# Include DAC device drivers
|
||||
|
||||
ifeq ($(CONFIG_DAC_AD5410),y)
|
||||
CSRCS += ad5410.c
|
||||
endif
|
||||
endif
|
||||
|
||||
# Check for ADC devices
|
||||
|
|
|
|||
|
|
@ -0,0 +1,206 @@
|
|||
/************************************************************************************
|
||||
* arch/drivers/analog/ad5410.c
|
||||
*
|
||||
* Copyright (C) 2011 Li Zhuoyi. All rights reserved.
|
||||
* Author: Li Zhuoyi <lzyy.cn@gmail.com>
|
||||
* History: 0.1 2011-08-05 initial version
|
||||
*
|
||||
* This file is a part of NuttX:
|
||||
*
|
||||
* Copyright (C) 2010 Gregory Nutt. All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
*
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in
|
||||
* the documentation and/or other materials provided with the
|
||||
* distribution.
|
||||
* 3. Neither the name NuttX nor the names of its contributors may be
|
||||
* used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
||||
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
||||
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
||||
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
||||
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
|
||||
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
||||
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
||||
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
||||
* POSSIBILITY OF SUCH DAMAGE.
|
||||
*
|
||||
************************************************************************************/
|
||||
|
||||
#include <nuttx/config.h>
|
||||
|
||||
#include <stdio.h>
|
||||
#include <sys/types.h>
|
||||
#include <stdint.h>
|
||||
#include <stdbool.h>
|
||||
#include <semaphore.h>
|
||||
#include <errno.h>
|
||||
#include <debug.h>
|
||||
|
||||
#include <arch/board/board.h>
|
||||
#include <nuttx/arch.h>
|
||||
#include <nuttx/analog/dac.h>
|
||||
#include <nuttx/spi.h>
|
||||
#include "lpc17_internal.h"
|
||||
|
||||
#if defined(CONFIG_DAC_AD5410)
|
||||
|
||||
#define AD5410_REG_NOP 0x00
|
||||
#define AD5410_REG_WR 0x01
|
||||
#define AD5410_REG_RD 0x02
|
||||
#define AD5410_REG_CMD 0x55
|
||||
#define AD5410_REG_RST 0x56
|
||||
|
||||
#define AD5410_CMD_REXT (1<<13)
|
||||
#define AD5410_CMD_OUTEN (1<<12)
|
||||
#define AD5410_CMD_SRCLK(x) (x<<8)
|
||||
#define AD5410_CMD_SRSTEP(x) (x<<5)
|
||||
#define AD5410_CMD_SREN (1<<4)
|
||||
#define AD5410_CMD_DCEN (1<<3)
|
||||
#define AD5410_CMD_420MA 0x05
|
||||
#define AD5410_CMD_020MA 0x06
|
||||
#define AD5410_CMD_024MA 0x07
|
||||
|
||||
/****************************************************************************
|
||||
* ad_private Types
|
||||
****************************************************************************/
|
||||
struct up_dev_s
|
||||
{
|
||||
int devno;
|
||||
FAR struct spi_dev_s *spi; /* Cached SPI device reference */
|
||||
};
|
||||
|
||||
/****************************************************************************
|
||||
* ad_private Function Prototypes
|
||||
****************************************************************************/
|
||||
|
||||
/* DAC methods */
|
||||
|
||||
static void dac_reset(FAR struct dac_dev_s *dev);
|
||||
static int dac_setup(FAR struct dac_dev_s *dev);
|
||||
static void dac_shutdown(FAR struct dac_dev_s *dev);
|
||||
static void dac_txint(FAR struct dac_dev_s *dev, bool enable);
|
||||
static int dac_send(FAR struct dac_dev_s *dev, FAR struct dac_msg_s *msg);
|
||||
static int dac_ioctl(FAR struct dac_dev_s *dev, int cmd, unsigned long arg);
|
||||
static int dac_interrupt(int irq, void *context);
|
||||
|
||||
/****************************************************************************
|
||||
* ad_private Data
|
||||
****************************************************************************/
|
||||
|
||||
static const struct dac_ops_s g_dacops =
|
||||
{
|
||||
.ao_reset =dac_reset,
|
||||
.ao_setup = dac_setup,
|
||||
.ao_shutdown = dac_shutdown,
|
||||
.ao_txint = dac_txint,
|
||||
.ao_send = dac_send,
|
||||
.ao_ioctl = dac_ioctl,
|
||||
};
|
||||
|
||||
static struct up_dev_s g_dacpriv;
|
||||
static struct dac_dev_s g_dacdev =
|
||||
{
|
||||
.ad_ops = &g_dacops,
|
||||
.ad_priv= &g_dacpriv,
|
||||
};
|
||||
|
||||
/****************************************************************************
|
||||
* ad_private Functions
|
||||
****************************************************************************/
|
||||
|
||||
/* Reset the DAC device. Called early to initialize the hardware. This
|
||||
* is called, before ao_setup() and on error conditions.
|
||||
*/
|
||||
static void dac_reset(FAR struct dac_dev_s *dev)
|
||||
{
|
||||
|
||||
}
|
||||
|
||||
/* Configure the DAC. This method is called the first time that the DAC
|
||||
* device is opened. This will occur when the port is first opened.
|
||||
* This setup includes configuring and attaching DAC interrupts. Interrupts
|
||||
* are all disabled upon return.
|
||||
*/
|
||||
static int dac_setup(FAR struct dac_dev_s *dev)
|
||||
{
|
||||
FAR struct up_dev_s *priv = (FAR struct up_dev_s *)dev->ad_priv;
|
||||
FAR struct spi_dev_s *spi = priv->spi;
|
||||
SPI_SELECT(spi, priv->devno, true);
|
||||
SPI_SEND(spi,AD5410_REG_CMD);
|
||||
SPI_SEND(spi,(AD5410_CMD_OUTEN|AD5410_CMD_420MA)>>8);
|
||||
SPI_SEND(spi,AD5410_CMD_OUTEN|AD5410_CMD_420MA);
|
||||
SPI_SELECT(spi, priv->devno, false);
|
||||
return OK;
|
||||
}
|
||||
|
||||
/* Disable the DAC. This method is called when the DAC device is closed.
|
||||
* This method reverses the operation the setup method.
|
||||
*/
|
||||
static void dac_shutdown(FAR struct dac_dev_s *dev)
|
||||
{
|
||||
}
|
||||
|
||||
/* Call to enable or disable TX interrupts */
|
||||
static void dac_txint(FAR struct dac_dev_s *dev, bool enable)
|
||||
{
|
||||
}
|
||||
|
||||
static int dac_send(FAR struct dac_dev_s *dev, FAR struct dac_msg_s *msg)
|
||||
{
|
||||
FAR struct up_dev_s *priv = (FAR struct up_dev_s *)dev->ad_priv;
|
||||
FAR struct spi_dev_s *spi = priv->spi;
|
||||
SPI_SELECT(spi, priv->devno, true);
|
||||
SPI_SEND(spi,AD5410_REG_WR);
|
||||
SPI_SEND(spi,(uint8_t)(msg->am_data>>24));
|
||||
SPI_SEND(spi,(uint8_t)(msg->am_data>>16));
|
||||
SPI_SELECT(spi, priv->devno, false);
|
||||
dac_txdone(&g_dacdev);
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* All ioctl calls will be routed through this method */
|
||||
static int dac_ioctl(FAR struct dac_dev_s *dev, int cmd, unsigned long arg)
|
||||
{
|
||||
dbg("Fix me:Not Implemented\n");
|
||||
return 0;
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Public Functions
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Name: up_ad5410cinitialize
|
||||
*
|
||||
* Description:
|
||||
* Initialize the selected DAC port
|
||||
*
|
||||
* Input Parameter:
|
||||
* Port number (for hardware that has mutiple DAC interfaces)
|
||||
*
|
||||
* Returned Value:
|
||||
* Valid ad5410 device structure reference on succcess; a NULL on failure
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
FAR struct dac_dev_s *up_ad5410initialize(FAR struct spi_dev_s *spi, unsigned int devno)
|
||||
{
|
||||
FAR struct up_dev_s *priv = (FAR struct up_dev_s *)g_dacdev.ad_priv;
|
||||
priv->spi=spi;
|
||||
priv->devno=devno;
|
||||
return &g_dacdev;
|
||||
}
|
||||
#endif
|
||||
|
||||
|
|
@ -1,5 +1,5 @@
|
|||
/****************************************************************************
|
||||
* drivers/adc/adc.c
|
||||
* drivers/analog/adc.c
|
||||
*
|
||||
* Copyright (C) 2011 Li Zhuoyi. All rights reserved.
|
||||
* Author: Li Zhuoyi <lzyy.cn@gmail.com>
|
||||
|
|
|
|||
|
|
@ -1,9 +1,10 @@
|
|||
/************************************************************************************
|
||||
* arch/drivers/adc/ads1255.c
|
||||
* arch/drivers/analog/ads1255.c
|
||||
*
|
||||
* Copyright (C) 2011 Li Zhuoyi. All rights reserved.
|
||||
* Author: Li Zhuoyi <lzyy.cn@gmail.com>
|
||||
* History: 0.1 2011-08-05 initial version
|
||||
* 0.2 2011-08-25 fix bug in g_adcdev (cd_ops -> ad_ops,cd_priv -> ad_priv)
|
||||
*
|
||||
* This file is a part of NuttX:
|
||||
*
|
||||
|
|
@ -101,13 +102,13 @@
|
|||
#endif
|
||||
|
||||
/****************************************************************************
|
||||
* cd_private Types
|
||||
* ad_private Types
|
||||
****************************************************************************/
|
||||
|
||||
struct up_dev_s
|
||||
{
|
||||
uint8_t channel;
|
||||
uint8_t sps;
|
||||
uint32_t sps;
|
||||
uint8_t pga;
|
||||
uint8_t buf;
|
||||
const uint8_t *mux;
|
||||
|
|
@ -117,7 +118,7 @@ struct up_dev_s
|
|||
};
|
||||
|
||||
/****************************************************************************
|
||||
* cd_private Function Prototypes
|
||||
* ad_private Function Prototypes
|
||||
****************************************************************************/
|
||||
|
||||
/* ADC methods */
|
||||
|
|
@ -130,16 +131,16 @@ static int adc_ioctl(FAR struct adc_dev_s *dev, int cmd, unsigned long arg);
|
|||
static int adc_interrupt(int irq, void *context);
|
||||
|
||||
/****************************************************************************
|
||||
* cd_private Data
|
||||
* ad_private Data
|
||||
****************************************************************************/
|
||||
|
||||
static const struct adc_ops_s g_adcops =
|
||||
{
|
||||
adc_reset, /* ao_reset */
|
||||
adc_setup, /* ao_setup */
|
||||
adc_shutdown, /* ao_shutdown */
|
||||
adc_rxint, /* ao_rxint */
|
||||
adc_ioctl /* ao_read */
|
||||
.ao_reset = adc_reset, /* ao_reset */
|
||||
.ao_setup = adc_setup, /* ao_setup */
|
||||
.ao_shutdown = adc_shutdown, /* ao_shutdown */
|
||||
.ao_rxint = adc_rxint, /* ao_rxint */
|
||||
.ao_ioctl = adc_ioctl /* ao_read */
|
||||
};
|
||||
|
||||
static struct up_dev_s g_adcpriv =
|
||||
|
|
@ -155,8 +156,8 @@ static struct up_dev_s g_adcpriv =
|
|||
|
||||
static struct adc_dev_s g_adcdev =
|
||||
{
|
||||
.cd_ops = &g_adcops,
|
||||
.cd_priv= &g_adcpriv,
|
||||
.ad_ops = &g_adcops,
|
||||
.ad_priv= &g_adcpriv,
|
||||
};
|
||||
|
||||
/****************************************************************************
|
||||
|
|
@ -183,7 +184,7 @@ static uint8_t getspsreg(uint16_t sps)
|
|||
}
|
||||
|
||||
/****************************************************************************
|
||||
* cd_private Functions
|
||||
* ad_private Functions
|
||||
****************************************************************************/
|
||||
/* Reset the ADC device. Called early to initialize the hardware. This
|
||||
* is called, before ao_setup() and on error conditions.
|
||||
|
|
@ -191,7 +192,7 @@ static uint8_t getspsreg(uint16_t sps)
|
|||
|
||||
static void adc_reset(FAR struct adc_dev_s *dev)
|
||||
{
|
||||
FAR struct up_dev_s *priv = (FAR struct up_dev_s *)dev->cd_priv;
|
||||
FAR struct up_dev_s *priv = (FAR struct up_dev_s *)dev->ad_priv;
|
||||
FAR struct spi_dev_s *spi = priv->spi;
|
||||
|
||||
SPI_SETMODE(spi, SPIDEV_MODE1);
|
||||
|
|
@ -213,7 +214,7 @@ static void adc_reset(FAR struct adc_dev_s *dev)
|
|||
|
||||
static int adc_setup(FAR struct adc_dev_s *dev)
|
||||
{
|
||||
FAR struct up_dev_s *priv = (FAR struct up_dev_s *)dev->cd_priv;
|
||||
FAR struct up_dev_s *priv = (FAR struct up_dev_s *)dev->ad_priv;
|
||||
FAR struct spi_dev_s *spi = priv->spi;
|
||||
int ret = irq_attach(priv->irq, adc_interrupt);
|
||||
if (ret == OK)
|
||||
|
|
@ -242,7 +243,7 @@ static int adc_setup(FAR struct adc_dev_s *dev)
|
|||
|
||||
static void adc_shutdown(FAR struct adc_dev_s *dev)
|
||||
{
|
||||
FAR struct up_dev_s *priv = (FAR struct up_dev_s *)dev->cd_priv;
|
||||
FAR struct up_dev_s *priv = (FAR struct up_dev_s *)dev->ad_priv;
|
||||
up_disable_irq(priv->irq);
|
||||
irq_detach(priv->irq);
|
||||
}
|
||||
|
|
@ -251,7 +252,7 @@ static void adc_shutdown(FAR struct adc_dev_s *dev)
|
|||
|
||||
static void adc_rxint(FAR struct adc_dev_s *dev, bool enable)
|
||||
{
|
||||
FAR struct up_dev_s *priv = (FAR struct up_dev_s *)dev->cd_priv;
|
||||
FAR struct up_dev_s *priv = (FAR struct up_dev_s *)dev->ad_priv;
|
||||
if (enable)
|
||||
up_enable_irq(priv->irq);
|
||||
else
|
||||
|
|
@ -269,7 +270,7 @@ static int adc_ioctl(FAR struct adc_dev_s *dev, int cmd, unsigned long arg)
|
|||
static int adc_interrupt(int irq, void *context)
|
||||
{
|
||||
uint32_t regval;
|
||||
FAR struct up_dev_s *priv = (FAR struct up_dev_s *)g_adcdev.cd_priv;
|
||||
FAR struct up_dev_s *priv = (FAR struct up_dev_s *)g_adcdev.ad_priv;
|
||||
FAR struct spi_dev_s *spi = priv->spi;
|
||||
unsigned char buf[4];
|
||||
unsigned char ch;
|
||||
|
|
@ -322,7 +323,7 @@ static int adc_interrupt(int irq, void *context)
|
|||
|
||||
FAR struct adc_dev_s *up_ads1255initialize(FAR struct spi_dev_s *spi, unsigned int devno)
|
||||
{
|
||||
FAR struct up_dev_s *priv = (FAR struct up_dev_s *)g_adcdev.cd_priv;
|
||||
FAR struct up_dev_s *priv = (FAR struct up_dev_s *)g_adcdev.ad_priv;
|
||||
|
||||
/* Driver state data */
|
||||
|
||||
|
|
|
|||
|
|
@ -0,0 +1,498 @@
|
|||
/****************************************************************************
|
||||
* drivers/analog/dac.c
|
||||
*
|
||||
* Copyright (C) 2011 Li Zhuoyi. All rights reserved.
|
||||
* Author: Li Zhuoyi <lzyy.cn@gmail.com>
|
||||
* History: 0.1 2011-08-04 initial version
|
||||
*
|
||||
* Derived from drivers/can.c
|
||||
*
|
||||
* Copyright (C) 2008-2009Gregory Nutt. All rights reserved.
|
||||
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
*
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in
|
||||
* the documentation and/or other materials provided with the
|
||||
* distribution.
|
||||
* 3. Neither the name NuttX nor the names of its contributors may be
|
||||
* used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
||||
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
||||
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
||||
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
||||
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
|
||||
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
||||
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
||||
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
||||
* POSSIBILITY OF SUCH DAMAGE.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Included Files
|
||||
****************************************************************************/
|
||||
|
||||
#include <nuttx/config.h>
|
||||
|
||||
#include <sys/types.h>
|
||||
#include <stdint.h>
|
||||
#include <stdbool.h>
|
||||
#include <unistd.h>
|
||||
#include <string.h>
|
||||
#include <semaphore.h>
|
||||
#include <fcntl.h>
|
||||
#include <errno.h>
|
||||
#include <debug.h>
|
||||
|
||||
#include <nuttx/fs.h>
|
||||
#include <nuttx/arch.h>
|
||||
#include <nuttx/analog/dac.h>
|
||||
|
||||
#include <arch/irq.h>
|
||||
|
||||
/****************************************************************************
|
||||
* Pre-processor Definitions
|
||||
****************************************************************************/
|
||||
|
||||
#define HALF_SECOND_MSEC 500
|
||||
#define HALF_SECOND_USEC 500000L
|
||||
|
||||
|
||||
/****************************************************************************
|
||||
* Private Function Prototypes
|
||||
****************************************************************************/
|
||||
|
||||
static int dac_open(FAR struct file *filep);
|
||||
static int dac_close(FAR struct file *filep);
|
||||
static ssize_t dac_read(FAR struct file *, FAR char *, size_t);
|
||||
static ssize_t dac_write(FAR struct file *filep, FAR const char *buffer, size_t buflen);
|
||||
static int dac_ioctl(FAR struct file *filep,int cmd,unsigned long arg);
|
||||
|
||||
/****************************************************************************
|
||||
* Private Data
|
||||
****************************************************************************/
|
||||
|
||||
static const struct file_operations dac_fops =
|
||||
{
|
||||
dac_open,
|
||||
dac_close,
|
||||
dac_read,
|
||||
dac_write,
|
||||
0,
|
||||
dac_ioctl
|
||||
#ifndef CONFIG_DISABLE_POLL
|
||||
, 0
|
||||
#endif
|
||||
};
|
||||
|
||||
/****************************************************************************
|
||||
* Private Functions
|
||||
****************************************************************************/
|
||||
/************************************************************************************
|
||||
* Name: dac_open
|
||||
*
|
||||
* Description:
|
||||
* This function is called whenever the DAC device is opened.
|
||||
*
|
||||
************************************************************************************/
|
||||
|
||||
static int dac_open(FAR struct file *filep)
|
||||
{
|
||||
FAR struct inode *inode = filep->f_inode;
|
||||
FAR struct dac_dev_s *dev = inode->i_private;
|
||||
uint8_t tmp;
|
||||
int ret = OK;
|
||||
|
||||
/* If the port is the middle of closing, wait until the close is finished */
|
||||
|
||||
if (sem_wait(&dev->ad_closesem) != OK)
|
||||
{
|
||||
ret = -errno;
|
||||
}
|
||||
else
|
||||
{
|
||||
/* Increment the count of references to the device. If this the first
|
||||
* time that the driver has been opened for this device, then initialize
|
||||
* the device.
|
||||
*/
|
||||
|
||||
tmp = dev->ad_ocount + 1;
|
||||
if (tmp == 0)
|
||||
{
|
||||
/* More than 255 opens; uint8_t overflows to zero */
|
||||
|
||||
ret = -EMFILE;
|
||||
}
|
||||
else
|
||||
{
|
||||
/* Check if this is the first time that the driver has been opened. */
|
||||
|
||||
if (tmp == 1)
|
||||
{
|
||||
/* Yes.. perform one time hardware initialization. */
|
||||
|
||||
irqstate_t flags = irqsave();
|
||||
ret = dev->ad_ops->ao_setup(dev);
|
||||
if (ret == OK)
|
||||
{
|
||||
/* Mark the FIFOs empty */
|
||||
|
||||
dev->ad_xmit.af_head = 0;
|
||||
dev->ad_xmit.af_tail = 0;
|
||||
|
||||
/* Save the new open count on success */
|
||||
|
||||
dev->ad_ocount = tmp;
|
||||
}
|
||||
irqrestore(flags);
|
||||
}
|
||||
}
|
||||
sem_post(&dev->ad_closesem);
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
||||
/************************************************************************************
|
||||
* Name: dac_close
|
||||
*
|
||||
* Description:
|
||||
* This routine is called when the DAC device is closed.
|
||||
* It waits for the last remaining data to be sent.
|
||||
*
|
||||
************************************************************************************/
|
||||
|
||||
static int dac_close(FAR struct file *filep)
|
||||
{
|
||||
FAR struct inode *inode = filep->f_inode;
|
||||
FAR struct dac_dev_s *dev = inode->i_private;
|
||||
irqstate_t flags;
|
||||
int ret = OK;
|
||||
|
||||
if (sem_wait(&dev->ad_closesem) != OK)
|
||||
{
|
||||
ret = -errno;
|
||||
}
|
||||
else
|
||||
{
|
||||
/* Decrement the references to the driver. If the reference count will
|
||||
* decrement to 0, then uninitialize the driver.
|
||||
*/
|
||||
|
||||
if (dev->ad_ocount > 1)
|
||||
{
|
||||
dev->ad_ocount--;
|
||||
sem_post(&dev->ad_closesem);
|
||||
}
|
||||
else
|
||||
{
|
||||
/* There are no more references to the port */
|
||||
|
||||
dev->ad_ocount = 0;
|
||||
|
||||
/* Now we wait for the transmit FIFO to clear */
|
||||
|
||||
while (dev->ad_xmit.af_head != dev->ad_xmit.af_tail)
|
||||
{
|
||||
#ifndef CONFIG_DISABLE_SIGNALS
|
||||
usleep(HALF_SECOND_USEC);
|
||||
#else
|
||||
up_mdelay(HALF_SECOND_MSEC);
|
||||
#endif
|
||||
}
|
||||
|
||||
/* Free the IRQ and disable the DAC device */
|
||||
|
||||
flags = irqsave(); /* Disable interrupts */
|
||||
dev->ad_ops->ao_shutdown(dev); /* Disable the DAC */
|
||||
irqrestore(flags);
|
||||
|
||||
sem_post(&dev->ad_closesem);
|
||||
}
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Name: dac_read
|
||||
****************************************************************************/
|
||||
|
||||
static ssize_t dac_read(FAR struct file *filep, FAR char *buffer, size_t buflen)
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
|
||||
/************************************************************************************
|
||||
* Name: dac_xmit
|
||||
*
|
||||
* Description:
|
||||
* Send the message at the head of the ad_xmit FIFO
|
||||
*
|
||||
* Assumptions:
|
||||
* Called with interrupts disabled
|
||||
*
|
||||
************************************************************************************/
|
||||
|
||||
static int dac_xmit(FAR struct dac_dev_s *dev)
|
||||
{
|
||||
bool enable = false;
|
||||
int ret = OK;
|
||||
|
||||
/* Check if the xmit FIFO is empty */
|
||||
|
||||
if (dev->ad_xmit.af_head != dev->ad_xmit.af_tail)
|
||||
{
|
||||
/* Send the next message at the head of the FIFO */
|
||||
|
||||
ret = dev->ad_ops->ao_send(dev, &dev->ad_xmit.af_buffer[dev->ad_xmit.af_head]);
|
||||
|
||||
/* Make sure the TX done interrupts are enabled */
|
||||
|
||||
enable = (ret == OK ? true : false);
|
||||
}
|
||||
dev->ad_ops->ao_txint(dev, enable);
|
||||
return ret;
|
||||
}
|
||||
|
||||
/************************************************************************************
|
||||
* Name: dac_write
|
||||
************************************************************************************/
|
||||
|
||||
static ssize_t dac_write(FAR struct file *filep, FAR const char *buffer, size_t buflen)
|
||||
{
|
||||
FAR struct inode *inode = filep->f_inode;
|
||||
FAR struct dac_dev_s *dev = inode->i_private;
|
||||
FAR struct dac_fifo_s *fifo = &dev->ad_xmit;
|
||||
FAR struct dac_msg_s *msg;
|
||||
bool empty = false;
|
||||
ssize_t nsent = 0;
|
||||
irqstate_t flags;
|
||||
int nexttail;
|
||||
int msglen;
|
||||
int ret = 0;
|
||||
|
||||
/* Interrupts must disabled throughout the following */
|
||||
|
||||
flags = irqsave();
|
||||
|
||||
/* Check if the TX FIFO was empty when we started. That is a clue that we have
|
||||
* to kick off a new TX sequence.
|
||||
*/
|
||||
|
||||
empty = (fifo->af_head == fifo->af_tail);
|
||||
|
||||
/* Add the messages to the FIFO. Ignore any trailing messages that are
|
||||
* shorter than the minimum.
|
||||
*/
|
||||
|
||||
if (buflen % 5 ==0 )
|
||||
msglen=5;
|
||||
else if (buflen % 4 ==0 )
|
||||
msglen=4;
|
||||
else if (buflen % 3 ==0 )
|
||||
msglen=3;
|
||||
else if (buflen % 2 ==0 )
|
||||
msglen=2;
|
||||
else if (buflen == 1)
|
||||
msglen=1;
|
||||
else
|
||||
msglen=5;
|
||||
|
||||
while ((buflen - nsent) >= msglen )
|
||||
{
|
||||
/* Check if adding this new message would over-run the drivers ability to enqueue
|
||||
* xmit data.
|
||||
*/
|
||||
|
||||
nexttail = fifo->af_tail + 1;
|
||||
if (nexttail >= CONFIG_DAC_FIFOSIZE)
|
||||
{
|
||||
nexttail = 0;
|
||||
}
|
||||
|
||||
/* If the XMIT fifo becomes full, then wait for space to become available */
|
||||
|
||||
while (nexttail == fifo->af_head)
|
||||
{
|
||||
/* The transmit FIFO is full -- was non-blocking mode selected? */
|
||||
|
||||
if (filep->f_oflags & O_NONBLOCK)
|
||||
{
|
||||
if (nsent == 0)
|
||||
{
|
||||
ret = -EAGAIN;
|
||||
}
|
||||
else
|
||||
{
|
||||
ret = nsent;
|
||||
}
|
||||
goto return_with_irqdisabled;
|
||||
}
|
||||
|
||||
/* If the FIFO was empty when we started, then we will have
|
||||
* start the XMIT sequence to clear the FIFO.
|
||||
*/
|
||||
|
||||
if (empty)
|
||||
{
|
||||
dac_xmit(dev);
|
||||
}
|
||||
|
||||
/* Wait for a message to be sent */
|
||||
|
||||
do
|
||||
{
|
||||
ret = sem_wait(&fifo->af_sem);
|
||||
if (ret < 0 && errno != EINTR)
|
||||
{
|
||||
ret = -errno;
|
||||
goto return_with_irqdisabled;
|
||||
}
|
||||
}
|
||||
while (ret < 0);
|
||||
|
||||
/* Re-check the FIFO state */
|
||||
|
||||
empty = (fifo->af_head == fifo->af_tail);
|
||||
}
|
||||
|
||||
/* We get here if there is space at the end of the FIFO. Add the new
|
||||
* CAN message at the tail of the FIFO.
|
||||
*/
|
||||
if(msglen==5)
|
||||
{
|
||||
msg = (FAR struct dac_msg_s *)&buffer[nsent];
|
||||
memcpy(&fifo->af_buffer[fifo->af_tail], msg, msglen);
|
||||
}
|
||||
else if(msglen == 4)
|
||||
{
|
||||
fifo->af_buffer[fifo->af_tail].am_channel=buffer[nsent];
|
||||
fifo->af_buffer[fifo->af_tail].am_data=*(uint32_t *)&buffer[nsent];
|
||||
fifo->af_buffer[fifo->af_tail].am_data&=0xffffff00;
|
||||
}
|
||||
else if(msglen == 3)
|
||||
{
|
||||
fifo->af_buffer[fifo->af_tail].am_channel=buffer[nsent];
|
||||
fifo->af_buffer[fifo->af_tail].am_data=(*(uint16_t *)&buffer[nsent+1]);
|
||||
fifo->af_buffer[fifo->af_tail].am_data<<=16;
|
||||
}
|
||||
else if(msglen == 2)
|
||||
{
|
||||
fifo->af_buffer[fifo->af_tail].am_channel=0;
|
||||
fifo->af_buffer[fifo->af_tail].am_data=(*(uint16_t *)&buffer[nsent]);
|
||||
fifo->af_buffer[fifo->af_tail].am_data<<=16;
|
||||
}
|
||||
else if(msglen == 1)
|
||||
{
|
||||
fifo->af_buffer[fifo->af_tail].am_channel=0;
|
||||
fifo->af_buffer[fifo->af_tail].am_data=buffer[nsent];
|
||||
fifo->af_buffer[fifo->af_tail].am_data<<=24;
|
||||
}
|
||||
/* Increment the tail of the circular buffer */
|
||||
|
||||
fifo->af_tail = nexttail;
|
||||
|
||||
/* Increment the number of bytes that were sent */
|
||||
|
||||
nsent += msglen;
|
||||
}
|
||||
|
||||
/* We get here after all messages have been added to the FIFO. Check if
|
||||
* we need to kick of the XMIT sequence.
|
||||
*/
|
||||
|
||||
if (empty)
|
||||
{
|
||||
dac_xmit(dev);
|
||||
}
|
||||
|
||||
/* Return the number of bytes that were sent */
|
||||
|
||||
ret = nsent;
|
||||
|
||||
return_with_irqdisabled:
|
||||
irqrestore(flags);
|
||||
return ret;
|
||||
}
|
||||
|
||||
/************************************************************************************
|
||||
* Name: dac_ioctl
|
||||
************************************************************************************/
|
||||
|
||||
static int dac_ioctl(FAR struct file *filep, int cmd, unsigned long arg)
|
||||
{
|
||||
FAR struct inode *inode = filep->f_inode;
|
||||
FAR struct dac_dev_s *dev = inode->i_private;
|
||||
int ret = OK;
|
||||
|
||||
ret = dev->ad_ops->ao_ioctl(dev, cmd, arg);
|
||||
return ret;
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Public Functions
|
||||
****************************************************************************/
|
||||
|
||||
/************************************************************************************
|
||||
* Name: dac_txdone
|
||||
*
|
||||
* Description:
|
||||
* Called from the DAC interrupt handler at the completion of a send operation.
|
||||
*
|
||||
* Return:
|
||||
* OK on success; a negated errno on failure.
|
||||
*
|
||||
************************************************************************************/
|
||||
|
||||
int dac_txdone(FAR struct dac_dev_s *dev)
|
||||
{
|
||||
int ret = -ENOENT;
|
||||
|
||||
/* Verify that the xmit FIFO is not empty */
|
||||
|
||||
if (dev->ad_xmit.af_head != dev->ad_xmit.af_tail)
|
||||
{
|
||||
/* Remove the message at the head of the xmit FIFO */
|
||||
|
||||
if (++dev->ad_xmit.af_head >= CONFIG_DAC_FIFOSIZE)
|
||||
{
|
||||
dev->ad_xmit.af_head = 0;
|
||||
}
|
||||
|
||||
/* Send the next message in the FIFO */
|
||||
|
||||
ret = dac_xmit(dev);
|
||||
if (ret == OK)
|
||||
{
|
||||
/* Inform any waiting threads that new xmit space is available */
|
||||
|
||||
ret = sem_post(&dev->ad_xmit.af_sem);
|
||||
}
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
||||
int dac_register(FAR const char *path, FAR struct dac_dev_s *dev)
|
||||
{
|
||||
/* Initialize the DAC device structure */
|
||||
|
||||
dev->ad_ocount = 0;
|
||||
|
||||
sem_init(&dev->ad_xmit.af_sem, 0, 0);
|
||||
sem_init(&dev->ad_closesem, 0, 1);
|
||||
|
||||
dev->ad_ops->ao_reset(dev);
|
||||
|
||||
return register_driver(path, &dac_fops, 0555, dev);
|
||||
}
|
||||
|
||||
|
|
@ -4,6 +4,7 @@
|
|||
* Copyright (C) 2011 Li Zhuoyi. All rights reserved.
|
||||
* Author: Li Zhuoyi <lzyy.cn@gmail.com>
|
||||
* History: 0.1 2011-08-04 initial version
|
||||
* 0.2 remove ao_read
|
||||
*
|
||||
* Derived from include/nuttx/can.h
|
||||
* Copyright (C) 2008, 2009 Gregory Nutt. All rights reserved.
|
||||
|
|
@ -120,8 +121,6 @@ struct adc_ops_s
|
|||
|
||||
CODE void (*ao_rxint)(FAR struct adc_dev_s *dev, bool enable);
|
||||
|
||||
CODE int (*ao_read)(FAR struct adc_dev_s *dev, char *buffer,int len);
|
||||
|
||||
/* All ioctl calls will be routed through this method */
|
||||
|
||||
CODE int (*ao_ioctl)(FAR struct adc_dev_s *dev, int cmd, unsigned long arg);
|
||||
|
|
@ -182,6 +181,15 @@ int adc_receive(FAR struct adc_dev_s *dev, uint8_t ch, int32_t data);
|
|||
|
||||
FAR struct adc_dev_s *up_ads1255initialize(FAR struct spi_dev_s *spi, unsigned int devno);
|
||||
|
||||
/************************************************************************************
|
||||
* Name: up_adcinitialize
|
||||
*
|
||||
* Description:
|
||||
* Initialize the MCU internal adc driver
|
||||
*
|
||||
************************************************************************************/
|
||||
FAR struct adc_dev_s *up_adcinitialize();
|
||||
|
||||
#if defined(__cplusplus)
|
||||
}
|
||||
#endif
|
||||
|
|
|
|||
|
|
@ -0,0 +1,189 @@
|
|||
/************************************************************************************
|
||||
* include/nuttx/analog/dac.h
|
||||
*
|
||||
* Copyright (C) 2011 Li Zhuoyi. All rights reserved.
|
||||
* Author: Li Zhuoyi <lzyy.cn@gmail.com>
|
||||
* History: 0.1 2011-08-04 initial version
|
||||
*
|
||||
* Derived from include/nuttx/can.h
|
||||
* Copyright (C) 2008, 2009 Gregory Nutt. All rights reserved.
|
||||
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
*
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in
|
||||
* the documentation and/or other materials provided with the
|
||||
* distribution.
|
||||
* 3. Neither the name NuttX nor the names of its contributors may be
|
||||
* used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
||||
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
||||
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
||||
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
||||
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
|
||||
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
||||
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
||||
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
||||
* POSSIBILITY OF SUCH DAMAGE.
|
||||
*
|
||||
************************************************************************************/
|
||||
|
||||
#ifndef __NUTTX_DAC_H
|
||||
#define __NUTTX_DAC_H
|
||||
|
||||
/************************************************************************************
|
||||
* Included Files
|
||||
************************************************************************************/
|
||||
|
||||
#include <nuttx/config.h>
|
||||
|
||||
#include <sys/types.h>
|
||||
#include <stdint.h>
|
||||
#include <stdbool.h>
|
||||
#include <semaphore.h>
|
||||
#include <nuttx/fs.h>
|
||||
#include <nuttx/spi.h>
|
||||
|
||||
/************************************************************************************
|
||||
* Pre-processor Definitions
|
||||
************************************************************************************/
|
||||
/* Default configuration settings that may be overridden in the board configuration.
|
||||
* file. The configured size is limited to 255 to fit into a uint8_t.
|
||||
*/
|
||||
|
||||
#if !defined(CONFIG_DAC_FIFOSIZE)
|
||||
# define CONFIG_DAC_FIFOSIZE 8
|
||||
#elif CONFIG_DAC_FIFOSIZE > 255
|
||||
# undef CONFIG_DAC_FIFOSIZE
|
||||
# define CONFIG_DAC_FIFOSIZE 255
|
||||
#endif
|
||||
|
||||
/************************************************************************************
|
||||
* Public Types
|
||||
************************************************************************************/
|
||||
struct dac_msg_s
|
||||
{
|
||||
uint8_t am_channel; /* The 8-bit DAC Channel */
|
||||
int32_t am_data; /* DAC convert result (4 bytes) */
|
||||
};
|
||||
|
||||
struct dac_fifo_s
|
||||
{
|
||||
sem_t af_sem; /* Counting semaphore */
|
||||
uint8_t af_head; /* Index to the head [IN] index in the circular buffer */
|
||||
uint8_t af_tail; /* Index to the tail [OUT] index in the circular buffer */
|
||||
/* Circular buffer of CAN messages */
|
||||
struct dac_msg_s af_buffer[CONFIG_DAC_FIFOSIZE];
|
||||
};
|
||||
|
||||
/* This structure defines all of the operations providd by the architecture specific
|
||||
* logic. All fields must be provided with non-NULL function pointers by the
|
||||
* caller of dac_register().
|
||||
*/
|
||||
|
||||
struct dac_dev_s;
|
||||
struct dac_ops_s
|
||||
{
|
||||
/* Reset the DAC device. Called early to initialize the hardware. This
|
||||
* is called, before ao_setup() and on error conditions.
|
||||
*/
|
||||
|
||||
CODE void (*ao_reset)(FAR struct dac_dev_s *dev);
|
||||
|
||||
/* Configure the DAC. This method is called the first time that the DAC
|
||||
* device is opened. This will occur when the port is first opened.
|
||||
* This setup includes configuring and attaching DAC interrupts. Interrupts
|
||||
* are all disabled upon return.
|
||||
*/
|
||||
|
||||
CODE int (*ao_setup)(FAR struct dac_dev_s *dev);
|
||||
|
||||
/* Disable the DAC. This method is called when the DAC device is closed.
|
||||
* This method reverses the operation the setup method.
|
||||
*/
|
||||
CODE void (*ao_shutdown)(FAR struct dac_dev_s *dev);
|
||||
|
||||
/* Call to enable or disable TX interrupts */
|
||||
|
||||
CODE void (*ao_txint)(FAR struct dac_dev_s *dev, bool enable);
|
||||
|
||||
/* This method will send one message on the DAC */
|
||||
|
||||
CODE int (*ao_send)(FAR struct dac_dev_s *dev, FAR struct dac_msg_s *msg);
|
||||
|
||||
/* All ioctl calls will be routed through this method */
|
||||
|
||||
CODE int (*ao_ioctl)(FAR struct dac_dev_s *dev, int cmd, unsigned long arg);
|
||||
|
||||
};
|
||||
|
||||
/* This is the device structure used by the driver. The caller of
|
||||
* dac_register() must allocate and initialize this structure. The
|
||||
* calling logic need only set all fields to zero except:
|
||||
*
|
||||
* The elements of 'ad_ops', and 'ad_priv'
|
||||
*
|
||||
* The common logic will initialize all semaphores.
|
||||
*/
|
||||
|
||||
struct dac_dev_s
|
||||
{
|
||||
uint8_t ad_ocount; /* The number of times the device has been opened */
|
||||
uint8_t ad_nchannel; /* Number of dac channel */
|
||||
sem_t ad_closesem; /* Locks out new opens while close is in progress */
|
||||
struct dac_fifo_s ad_xmit; /* Describes receive FIFO */
|
||||
const struct dac_ops_s *ad_ops; /* Arch-specific operations */
|
||||
void *ad_priv; /* Used by the arch-specific logic */
|
||||
};
|
||||
|
||||
/************************************************************************************
|
||||
* Public Data
|
||||
************************************************************************************/
|
||||
|
||||
/************************************************************************************
|
||||
* Public Functions
|
||||
************************************************************************************/
|
||||
|
||||
#if defined(__cplusplus)
|
||||
extern "C" {
|
||||
#endif
|
||||
/************************************************************************************
|
||||
* Name: dac_register
|
||||
*
|
||||
* Description:
|
||||
* Register a dac driver.
|
||||
*
|
||||
************************************************************************************/
|
||||
|
||||
int dac_register(FAR const char *path, FAR struct dac_dev_s *dev);
|
||||
|
||||
/************************************************************************************
|
||||
* Name: dac_txdone
|
||||
*
|
||||
* Description:
|
||||
* Called from the DAC interrupt handler at the completion of a send operation.
|
||||
*
|
||||
* Return:
|
||||
* OK on success; a negated errno on failure.
|
||||
*
|
||||
************************************************************************************/
|
||||
int dac_txdone(FAR struct dac_dev_s *dev);
|
||||
|
||||
FAR struct dac_dev_s *up_ad5410initialize(FAR struct spi_dev_s *spi, unsigned int devno);
|
||||
FAR struct dac_dev_s *up_dacinitialize();
|
||||
|
||||
#if defined(__cplusplus)
|
||||
}
|
||||
#endif
|
||||
|
||||
#endif /* __NUTTX_DAC_H */
|
||||
|
|
@ -17,7 +17,7 @@ The syscall layer provided in this directory serves as the communication
|
|||
layer from the user-mode application into the kernel-mode RTOS. The
|
||||
switch from user-mode to kernel-mode is accomplished using software
|
||||
interrupts (SWIs). SWIs are implemented differently and named differently
|
||||
by different manufacters but all work essentially the same: A special
|
||||
by different manufacturers but all work essentially the same: A special
|
||||
instruction is executed in user-mode that causes a software generated
|
||||
interrupt. The software generated interrrupt is caught within the kernel
|
||||
and handle in kernel-mode.
|
||||
|
|
@ -84,7 +84,7 @@ implemented as a simple comma-separated-value file, syscall.csv. Most
|
|||
spreadsheets programs will accept this format and can be used to maintain
|
||||
the syscall database.
|
||||
|
||||
The format of the CVS file for each line is:
|
||||
The format of the CSV file for each line is:
|
||||
|
||||
Field 1: Function name
|
||||
Field 2: The header file that contains the function prototype
|
||||
|
|
@ -104,7 +104,7 @@ Each type field has a format as follows:
|
|||
A similar situation exists for unions. For example, the formal
|
||||
parameter type union sigval -- You cannot cast a uintptr_t to
|
||||
a union sigval, but you can cast to the type of one of the union
|
||||
member types when passing the actua paramter. Similarly, we
|
||||
member types when passing the actual paramter. Similarly, we
|
||||
cannot cast a union sigval to a uinptr_t either. Rather, we need
|
||||
to cast a specific union member fieldname to uintptr_t.
|
||||
|
||||
|
|
@ -122,7 +122,7 @@ database. Here the following definition is used:
|
|||
|
||||
Stub - Another tiny bit of code that executes within the NuttX kernel
|
||||
that is used to map a software interrupt received by the kernel to
|
||||
a kernel function call. The stubs receive the marshalled system
|
||||
a kernel function call. The stubs receive the marshaled system
|
||||
call data, and perform the actually kernel function call (in
|
||||
kernel-mode) on behalf of the proxy function.
|
||||
|
||||
|
|
@ -140,4 +140,4 @@ mksyscall
|
|||
stubs and proxies is maintained in a comma separated value (CSV) file
|
||||
in the syscall/ directory. The mksyscall program will accept this CVS
|
||||
file as input and generate all of the required proxy or stub files as
|
||||
output. See tools/README.txt for additonal information.
|
||||
output. See tools/README.txt for additional information.
|
||||
|
|
|
|||
Loading…
Reference in New Issue