186 lines
6.2 KiB
C
186 lines
6.2 KiB
C
/****************************************************************************
|
|
* configs/sam3u-ek/src/up_leds.c
|
|
*
|
|
* Copyright (C) 2010-2011 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.
|
|
*
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Included Files
|
|
****************************************************************************/
|
|
|
|
#include <nuttx/config.h>
|
|
#include "at32uc3_config.h"
|
|
|
|
#include <sys/types.h>
|
|
#include <stdint.h>
|
|
|
|
#include <nuttx/irq.h>
|
|
|
|
#include <arch/irq.h>
|
|
#include <arch/board/board.h>
|
|
|
|
#include "at32uc3_internal.h"
|
|
#include "avr32dev1_internal.h"
|
|
|
|
#ifdef CONFIG_ARCH_BUTTONS
|
|
|
|
/****************************************************************************
|
|
* Definitions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Private Data
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Private Functions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Name: up_irqbuttonx
|
|
*
|
|
* Description:
|
|
* This function implements the core of the up_irqbutton() logic.
|
|
*
|
|
****************************************************************************/
|
|
|
|
#if defined(CONFIG_AVR32_GPIOIRQ) && defined(CONFIG_ARCH_IRQBUTTONS) && \
|
|
(defined(CONFIG_AVR32DEV_BUTTON1_IRQ) || defined(CONFIG_AVR32DEV_BUTTON2_IRQ))
|
|
static xcpt_t up_irqbuttonx(int irq, xcpt_t irqhandler)
|
|
{
|
|
xcpt_t oldhandler;
|
|
|
|
/* Attach the handler */
|
|
|
|
gpio_irqattach(irq, irqhandler, &oldhandler);
|
|
|
|
/* Enable/disable the interrupt */
|
|
|
|
if (irqhandler)
|
|
{
|
|
gpio_irqenable(irq);
|
|
}
|
|
else
|
|
{
|
|
gpio_irqdisable(irq);
|
|
}
|
|
|
|
/* Return the old button handler (so that it can be restored) */
|
|
|
|
return oldhandler;
|
|
}
|
|
#endif
|
|
|
|
/****************************************************************************
|
|
* Public Functions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Name: up_buttoninit
|
|
*
|
|
* Description:
|
|
* up_buttoninit() must be called to initialize button resources. After
|
|
* that, up_buttons() may be called to collect the current state of all
|
|
* buttons or up_irqbutton() may be called to register button interrupt
|
|
* handlers.
|
|
*
|
|
****************************************************************************/
|
|
|
|
void up_buttoninit(void)
|
|
{
|
|
(void)at32uc3_configgpio(PINMUX_GPIO_BUTTON1);
|
|
(void)at32uc3_configgpio(PINMUX_GPIO_BUTTON2);
|
|
}
|
|
|
|
/****************************************************************************
|
|
* Name: up_buttons
|
|
*
|
|
* Description:
|
|
* After up_buttoninit() has been called, up_buttons() may be called to
|
|
* collect the state of all buttons. up_buttons() returns an 8-bit bit set
|
|
* with each bit associated with a button. See the BUTTON* definitions
|
|
* above for the meaning of each bit in the returned value.
|
|
*
|
|
****************************************************************************/
|
|
|
|
uint8_t up_buttons(void)
|
|
{
|
|
uint8_t retval;
|
|
|
|
retval = at32uc3_gpioread(PINMUX_GPIO_BUTTON1) ? 0 : BUTTON1;
|
|
retval |= at32uc3_gpioread(PINMUX_GPIO_BUTTON2) ? 0 : BUTTON2;
|
|
|
|
return retval;
|
|
}
|
|
|
|
/****************************************************************************
|
|
* Name: up_irqbutton
|
|
*
|
|
* Description:
|
|
* This function may be called to register an interrupt handler that will
|
|
* be called when a button is depressed or released. The ID value is one
|
|
* of the BUTTON* definitions provided above. The previous interrupt
|
|
* handler address isreturned (so that it may restored, if so desired).
|
|
*
|
|
* Configuration Notes:
|
|
* Configuration CONFIG_AVR32_GPIOIRQ must be selected to enable the
|
|
* overall GPIO IRQ feature and CONFIG_AVR32_GPIOIRQSETA and/or
|
|
* CONFIG_AVR32_GPIOIRQSETB must be enabled to select GPIOs to support
|
|
* interrupts on. For button support, bits 2 and 3 must be set in
|
|
* CONFIG_AVR32_GPIOIRQSETB (PB2 and PB3).
|
|
*
|
|
****************************************************************************/
|
|
|
|
#if defined(CONFIG_AVR32_GPIOIRQ) && defined(CONFIG_ARCH_IRQBUTTONS)
|
|
xcpt_t up_irqbutton(int id, xcpt_t irqhandler)
|
|
{
|
|
#ifdef CONFIG_AVR32DEV_BUTTON1_IRQ
|
|
if (id == BUTTON1)
|
|
{
|
|
return up_irqbuttonx(GPIO_BUTTON1_IRQ, irqhandler);
|
|
}
|
|
else
|
|
#endif
|
|
#ifdef CONFIG_AVR32DEV_BUTTON2_IRQ
|
|
if (id == BUTTON2)
|
|
{
|
|
return up_irqbuttonx(GPIO_BUTTON2_IRQ, irqhandler);
|
|
}
|
|
else
|
|
#endif
|
|
{
|
|
return NULL;
|
|
}
|
|
}
|
|
#endif
|
|
#endif /* CONFIG_ARCH_BUTTONS */
|