From 264a1b97d49027d90dae3782dbf690cbf97234de Mon Sep 17 00:00:00 2001 From: patacongo Date: Sat, 10 Sep 2011 16:20:09 +0000 Subject: [PATCH] Add driver for LM-75 temperature sensor git-svn-id: https://nuttx.svn.sourceforge.net/svnroot/nuttx/trunk@3947 7fd9a85b-ad96-42d3-883c-3090e2eb8679 --- nuttx/ChangeLog | 10 +- nuttx/TODO | 14 +- nuttx/arch/arm/src/stm32/stm32_i2c.c | 81 +-- nuttx/configs/stm3210e-eval/include/board.h | 36 ++ nuttx/configs/stm3210e-eval/src/Makefile | 4 + nuttx/configs/stm3210e-eval/src/README.txt | 0 .../stm3210e-eval/src/stm3210e-internal.h | 559 +++++++++--------- nuttx/configs/stm3210e-eval/src/up_boot.c | 0 nuttx/configs/stm3210e-eval/src/up_lcd.c | 0 nuttx/configs/stm3210e-eval/src/up_leds.c | 0 nuttx/configs/stm3210e-eval/src/up_lm75.c | 128 ++++ nuttx/configs/stm3210e-eval/src/up_nsh.c | 0 nuttx/configs/stm3210e-eval/src/up_spi.c | 0 nuttx/configs/stm3210e-eval/src/up_usbstrg.c | 0 nuttx/drivers/sensors/Make.defs | 4 + nuttx/drivers/sensors/lm75.c | 473 +++++++++++++++ nuttx/include/nuttx/ioctl.h | 8 +- nuttx/include/nuttx/sensors/lm75.h | 129 ++++ 18 files changed, 1125 insertions(+), 321 deletions(-) mode change 100755 => 100644 nuttx/configs/stm3210e-eval/src/Makefile mode change 100755 => 100644 nuttx/configs/stm3210e-eval/src/README.txt mode change 100755 => 100644 nuttx/configs/stm3210e-eval/src/stm3210e-internal.h mode change 100755 => 100644 nuttx/configs/stm3210e-eval/src/up_boot.c mode change 100755 => 100644 nuttx/configs/stm3210e-eval/src/up_lcd.c mode change 100755 => 100644 nuttx/configs/stm3210e-eval/src/up_leds.c create mode 100644 nuttx/configs/stm3210e-eval/src/up_lm75.c mode change 100755 => 100644 nuttx/configs/stm3210e-eval/src/up_nsh.c mode change 100755 => 100644 nuttx/configs/stm3210e-eval/src/up_spi.c mode change 100755 => 100644 nuttx/configs/stm3210e-eval/src/up_usbstrg.c create mode 100644 nuttx/drivers/sensors/lm75.c create mode 100644 nuttx/include/nuttx/sensors/lm75.h diff --git a/nuttx/ChangeLog b/nuttx/ChangeLog index 0e168cb6f..5728cecca 100644 --- a/nuttx/ChangeLog +++ b/nuttx/ChangeLog @@ -2022,7 +2022,9 @@ * graphics/, include/nuttx/nx: Add new NX interfaces for drawing circles -- both circular outlines and filled circles. * graphic/nxglib/nxglib_spitline.c: Add a "fudge factor" that eliminates - some problems for rendering nearly horizontal, wide lines. + some problems for rendering nearly horizontal, wide lines. Hmm... + but I suspect this fudge factor also leads to new problems rendering + very thin, nearly horizontal lines. More tuning is needed. * drivers/analog, include/nuttx/analog, arch/arch/src/lpcxx: (1) Add updates to the ADS1255 driver, (2) fix errors from my last merge (sorry), (3) Add DAC infrastructure, (4) add AD5410 DAC driver, and (5) add @@ -2031,7 +2033,7 @@ 'make export' logic. The script now also finds and bundles up all of the architecture-specific header files as well. * drivers/arch/arm/src/stm32/stm32_i2c.c: Add a reset to the I2C - initialization logic to prevent spurious interrups when the I2C + initialization logic to prevent spurious interrupts when the I2C interrupts are enabled (submitted by Uros Platise). * Scripts/makefiles/documents. Several adjustments, corrections and typo fixes so that NuttX will build correctly on FreeBSD using the @@ -2064,3 +2066,7 @@ (1) Clocking needs to be based on PCLK1, not HCLK and fast speed settings need some additional bits; and (2) Correct a hang that will occur on I2C1 if FSMC is also enabled. + * drivers/sensors/lm75.c and include/nuttx/sensors/lm75.h: Add an LM-75 + temperature sensor driver. + * configs/stm3210e-eval/src/up_lm75.c: Add support for the LM-75 on the + STMicro STM3210E-EVAL board. diff --git a/nuttx/TODO b/nuttx/TODO index 719c40329..5eba13ace 100644 --- a/nuttx/TODO +++ b/nuttx/TODO @@ -1,12 +1,15 @@ -NuttX TODO List (Last updated August 24, 2011) +NuttX TODO List (Last updated September 9, 2011) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ +This file summarizes known NuttX bugs, limitations, inconsistencies with +standards, things that could be improved, and ideas for enhancements. + nuttx/ (5) Task/Scheduler (sched/) (1) On-demand paging (sched/) (1) Memory Managment (mm/) - (1) Signals (sched/, arch/) + (2) Signals (sched/, arch/) (1) pthreads (sched/) (1) C++ Support (5) Binary loaders (binfmt/) @@ -132,6 +135,13 @@ o Signals (sched/, arch/) Priority: Low, required by standards but not so critical for an embedded system. + Description: sig_notify() logic does not support SIGEV_THREAD; structure + struct sigevent does not provide required members sigev_notify_function + or sigev_notify_attributes. + Status: Low, there are alternative designs. However, these features + are required by the POSIX standard. + Priority: Low for now + o pthreads (sched/) ^^^^^^^^^^^^^^^^^ diff --git a/nuttx/arch/arm/src/stm32/stm32_i2c.c b/nuttx/arch/arm/src/stm32/stm32_i2c.c index 92663363a..15f22e602 100644 --- a/nuttx/arch/arm/src/stm32/stm32_i2c.c +++ b/nuttx/arch/arm/src/stm32/stm32_i2c.c @@ -934,41 +934,55 @@ int stm32_i2c_process(FAR struct i2c_dev_s *dev, FAR struct i2c_msg_s *msgs, int /* Check for error status conditions */ - if (status & I2C_SR1_BERR) + if ((status & I2C_SR1_ERRORMASK) != 0) { - /* Bus Error */ + if (status & I2C_SR1_BERR) + { + /* Bus Error */ - status_errno = EIO; - } - else if (status & I2C_SR1_ARLO) - { - /* Arbitration Lost (master mode) */ + status_errno = EIO; + } + else if (status & I2C_SR1_ARLO) + { + /* Arbitration Lost (master mode) */ - status_errno = EAGAIN; - } - else if (status & I2C_SR1_AF) - { - /* Acknowledge Failure */ + status_errno = EAGAIN; + } + else if (status & I2C_SR1_AF) + { + /* Acknowledge Failure */ - status_errno = ENXIO; - } - else if (status & I2C_SR1_OVR) - { - /* Overrun/Underrun */ + status_errno = ENXIO; + } + else if (status & I2C_SR1_OVR) + { + /* Overrun/Underrun */ - status_errno = EIO; - } - else if (status & I2C_SR1_PECERR) - { - /* PEC Error in reception */ + status_errno = EIO; + } + else if (status & I2C_SR1_PECERR) + { + /* PEC Error in reception */ - status_errno = EPROTO; - } - else if (status & I2C_SR1_TIMEOUT) - { - /* Timeout or Tlow Error */ + status_errno = EPROTO; + } + else if (status & I2C_SR1_TIMEOUT) + { + /* Timeout or Tlow Error */ - status_errno = ETIME; + status_errno = ETIME; + } + + /* This is not an error and should never happen since SMBus is not enabled */ + + else if (status & I2C_SR1_SMBALERT) + { + /* SMBus alert is an optional signal with an interrupt line for devices + * that want to trade their ability to master for a pin. + */ + + status_errno = EINTR; + } } /* This is not an error, but should not happen. The BUSY signal can hang, @@ -982,17 +996,6 @@ int stm32_i2c_process(FAR struct i2c_dev_s *dev, FAR struct i2c_msg_s *msgs, int status_errno = EBUSY; } - /* This is not an error and should never happen since SMBus is not enabled */ - - else if (status & I2C_SR1_SMBALERT) - { - /* SMBus alert is an optional signal with an interrupt line for devices - * that want to trade their ability to master for a pin. - */ - - status_errno = EINTR; - } - /* Re-enable the FSMC */ stm32_i2c_enablefsmc(ahbenr); diff --git a/nuttx/configs/stm3210e-eval/include/board.h b/nuttx/configs/stm3210e-eval/include/board.h index 3c7a655f3..d8e506e6d 100755 --- a/nuttx/configs/stm3210e-eval/include/board.h +++ b/nuttx/configs/stm3210e-eval/include/board.h @@ -255,6 +255,42 @@ EXTERN xcpt_t up_irqbutton(int id, xcpt_t irqhandler); EXTERN void stm3210e_lcdclear(uint16_t color); #endif +/************************************************************************************ + * Name: stm32_lm75initialize + * + * Description: + * Initialize and register the LM-75 Temperature Sensor driver. + * + * Input parameters: + * devpath - The full path to the driver to register. E.g., "/dev/temp0" + * + * Returned Value: + * Zero (OK) on success; a negated errno value on failure. + * + ************************************************************************************/ + +#if defined(CONFIG_I2C) && defined(CONFIG_I2C_LM75) && defined(CONFIG_STM32_I2C1) +EXTERN int stm32_lm75initialize(FAR const char *devpath); +#endif + +/************************************************************************************ + * Name: stm32_lm75attach + * + * Description: + * Attach the LM-75 interrupt handler + * + * Input parameters: + * irqhandler - the LM-75 interrupt handler + * + * Returned Value: + * The previous LM-75 interrupt handler + * + ************************************************************************************/ + +#if defined(CONFIG_I2C) && defined(CONFIG_I2C_LM75) && defined(CONFIG_STM32_I2C1) +EXTERN xcpt_t stm32_lm75attach(xcpt_t irqhandler); +#endif + #undef EXTERN #if defined(__cplusplus) } diff --git a/nuttx/configs/stm3210e-eval/src/Makefile b/nuttx/configs/stm3210e-eval/src/Makefile old mode 100755 new mode 100644 index 8dd072bdf..f4177d760 --- a/nuttx/configs/stm3210e-eval/src/Makefile +++ b/nuttx/configs/stm3210e-eval/src/Makefile @@ -56,6 +56,10 @@ ifeq ($(CONFIG_USBSTRG),y) CSRCS += up_usbstrg.c endif +ifeq ($(CONFIG_I2C_LM75),y) +CSRCS += up_lm75.c +endif + COBJS = $(CSRCS:.c=$(OBJEXT)) SRCS = $(ASRCS) $(CSRCS) diff --git a/nuttx/configs/stm3210e-eval/src/README.txt b/nuttx/configs/stm3210e-eval/src/README.txt old mode 100755 new mode 100644 diff --git a/nuttx/configs/stm3210e-eval/src/stm3210e-internal.h b/nuttx/configs/stm3210e-eval/src/stm3210e-internal.h old mode 100755 new mode 100644 index 42d3090e0..e86b9a66a --- a/nuttx/configs/stm3210e-eval/src/stm3210e-internal.h +++ b/nuttx/configs/stm3210e-eval/src/stm3210e-internal.h @@ -1,277 +1,282 @@ -/************************************************************************************ - * configs/stm3210e_eval/src/stm3210e_internal.h - * arch/arm/src/board/stm3210e_internal.n - * - * Copyright (C) 2009 Gregory Nutt. All rights reserved. - * Author: Gregory Nutt - * - * 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 __CONFIGS_STM3210E_EVAL_SRC_STM3210E_INTERNAL_H -#define __CONFIGS_STM3210E_EVAL_SRC_STM3210E_INTERNAL_H - -/************************************************************************************ - * Included Files - ************************************************************************************/ - -#include -#include -#include - -/************************************************************************************ - * Definitions - ************************************************************************************/ - -/* How many SPI modules does this chip support? The LM3S6918 supports 2 SPI - * modules (others may support more -- in such case, the following must be - * expanded). - */ - -#if STM32_NSPI < 1 -# undef CONFIG_STM32_SPI1 -# undef CONFIG_STM32_SPI2 -#elif STM32_NSPI < 2 -# undef CONFIG_STM32_SPI2 -#endif - -/* STM3210E-EVAL GPIOs **************************************************************/ - -/* LEDs */ - -#define GPIO_LED1 (GPIO_OUTPUT|GPIO_CNF_OUTPP|GPIO_MODE_50MHz|\ - GPIO_OUTPUT_CLEAR|GPIO_PORTF|GPIO_PIN6) -#define GPIO_LED2 (GPIO_OUTPUT|GPIO_CNF_OUTPP|GPIO_MODE_50MHz|\ - GPIO_OUTPUT_CLEAR|GPIO_PORTF|GPIO_PIN7) -#define GPIO_LED3 (GPIO_OUTPUT|GPIO_CNF_OUTPP|GPIO_MODE_50MHz|\ - GPIO_OUTPUT_CLEAR|GPIO_PORTF|GPIO_PIN8) -#define GPIO_LED4 (GPIO_OUTPUT|GPIO_CNF_OUTPP|GPIO_MODE_50MHz|\ - GPIO_OUTPUT_CLEAR|GPIO_PORTF|GPIO_PIN9) - -/* BUTTONS -- NOTE that some have EXTI interrupts configured */ - -#define MIN_IRQBUTTON BUTTON_KEY -#define MAX_IRQBUTTON JOYSTICK_UP -#define NUM_IRQBUTTONS (JOYSTICK_UP - BUTTON_KEY + 1) - -#define GPIO_BTN_WAKEUP (GPIO_INPUT|GPIO_CNF_INFLOAT|GPIO_MODE_INPUT|\ - GPIO_PORTA|GPIO_PIN0) -#define GPIO_BTN_TAMPER (GPIO_INPUT|GPIO_CNF_INFLOAT|GPIO_MODE_INPUT|\ - GPIO_PORTC|GPIO_PIN13) -#define GPIO_BTN_KEY (GPIO_INPUT|GPIO_CNF_INFLOAT|GPIO_MODE_INPUT|\ - GPIO_EXTI|GPIO_PORTG|GPIO_PIN8) -#define GPIO_JOY_SEL (GPIO_INPUT|GPIO_CNF_INFLOAT|GPIO_MODE_INPUT|\ - GPIO_EXTI|GPIO_PORTG|GPIO_PIN7) -#define GPIO_JOY_DOWN (GPIO_INPUT|GPIO_CNF_INFLOAT|GPIO_MODE_INPUT|\ - GPIO_EXTI|GPIO_PORTD|GPIO_PIN3) -#define GPIO_JOY_LEFT (GPIO_INPUT|GPIO_CNF_INFLOAT|GPIO_MODE_INPUT|\ - GPIO_EXTI|GPIO_PORTG|GPIO_PIN14) -#define GPIO_JOY_RIGHT (GPIO_INPUT|GPIO_CNF_INFLOAT|GPIO_MODE_INPUT|\ - GPIO_EXTI|GPIO_PORTG|GPIO_PIN13) -#define GPIO_JOY_UP (GPIO_INPUT|GPIO_CNF_INFLOAT|GPIO_MODE_INPUT|\ - GPIO_EXTI|GPIO_PORTG|GPIO_PIN15) - -/* SPI FLASH chip select: PA.4 */ - -#define GPIO_FLASH_CS (GPIO_OUTPUT|GPIO_CNF_OUTPP|GPIO_MODE_50MHz|\ - GPIO_OUTPUT_SET|GPIO_PORTB|GPIO_PIN2) - -/* USB Soft Connect Pullup: PB.14 */ - -#define GPIO_USB_PULLUP (GPIO_OUTPUT|GPIO_CNF_OUTOD|GPIO_MODE_50MHz|\ - GPIO_OUTPUT_SET|GPIO_PORTB|GPIO_PIN14) - -/************************************************************************************ - * Public Types - ************************************************************************************/ - -/* GPIO settings that will be altered when external memory is selected */ - -struct extmem_save_s -{ - uint32_t gpiod_crl; - uint32_t gpiod_crh; - uint32_t gpioe_crl; - uint32_t gpioe_crh; - uint32_t gpiof_crl; - uint32_t gpiof_crh; - uint32_t gpiog_crl; - uint32_t gpiog_crh; -}; - -/************************************************************************************ - * Public data - ************************************************************************************/ - -#ifndef __ASSEMBLY__ - -/* GPIO configurations common to SRAM and NOR Flash */ - -#define NCOMMON_CONFIG 37 -extern const uint16_t g_commonconfig[NCOMMON_CONFIG]; - -/************************************************************************************ - * Public Functions - ************************************************************************************/ - -/************************************************************************************ - * Name: stm32_spiinitialize - * - * Description: - * Called to configure SPI chip select GPIO pins for the STM3210E-EVAL board. - * - ************************************************************************************/ - -extern void weak_function stm32_spiinitialize(void); - -/************************************************************************************ - * Name: stm32_usbinitialize - * - * Description: - * Called to setup USB-related GPIO pins for the STM3210E-EVAL board. - * - ************************************************************************************/ - -extern void weak_function stm32_usbinitialize(void); - -/************************************************************************************ - * Name: stm32_extcontextsave - * - * Description: - * Save current GPIOs that will used by external memory configurations - * - ************************************************************************************/ - -#ifdef CONFIG_STM32_FSMC -extern void stm32_extcontextsave(struct extmem_save_s *save); - -/************************************************************************************ - * Name: stm32_extcontextrestore - * - * Description: - * Restore GPIOs that were used by external memory configurations - * - ************************************************************************************/ - -extern void stm32_extcontextrestore(struct extmem_save_s *restore); - -/************************************************************************************ - * Name: stm32_extmemgpios - * - * Description: - * Initialize GPIOs for NOR or SRAM - * - ************************************************************************************/ - -extern void stm32_extmemgpios(const uint16_t *gpios, int ngpios); - -/************************************************************************************ - * Name: stm32_enablefsmc - * - * Description: - * enable clocking to the FSMC module - * - ************************************************************************************/ - -extern void stm32_enablefsmc(void); - -/************************************************************************************ - * Name: stm32_disablefsmc - * - * Description: - * enable clocking to the FSMC module - * - ************************************************************************************/ - -extern void stm32_disablefsmc(void); - -/************************************************************************************ - * Name: stm32_selectnor - * - * Description: - * Initialize to access NOR flash - * - ************************************************************************************/ - -extern void stm32_selectnor(void); - -/************************************************************************************ - * Name: stm32_deselectnor - * - * Description: - * Disable NOR FLASH - * - ************************************************************************************/ - -extern void stm32_deselectnor(void); - -/************************************************************************************ - * Name: stm32_selectsram - * - * Description: - * Initialize to access external SRAM - * - ************************************************************************************/ - -extern void stm32_selectsram(void); - /************************************************************************************ - * Name: stm32_deselectsram - * - * Description: - * Disable external SRAM - * - ************************************************************************************/ - -extern void stm32_deselectsram(void); - -/************************************************************************************ - * Name: stm32_selectlcd - * - * Description: - * Initialize to the LCD - * - ************************************************************************************/ - -extern void stm32_selectlcd(void); - -/************************************************************************************ - * Name: stm32_deselectlcd - * - * Description: - * Disable the LCD - * - ************************************************************************************/ - -extern void stm32_deselectlcd(void); - -#endif /* CONFIG_STM32_FSMC */ - -#endif /* __ASSEMBLY__ */ -#endif /* __CONFIGS_STM3210E_EVAL_SRC_STM3210E_INTERNAL_H */ - +/************************************************************************************ + * configs/stm3210e_eval/src/stm3210e_internal.h + * arch/arm/src/board/stm3210e_internal.n + * + * Copyright (C) 2009 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt + * + * 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 __CONFIGS_STM3210E_EVAL_SRC_STM3210E_INTERNAL_H +#define __CONFIGS_STM3210E_EVAL_SRC_STM3210E_INTERNAL_H + +/************************************************************************************ + * Included Files + ************************************************************************************/ + +#include +#include +#include + +/************************************************************************************ + * Definitions + ************************************************************************************/ + +/* How many SPI modules does this chip support? The LM3S6918 supports 2 SPI + * modules (others may support more -- in such case, the following must be + * expanded). + */ + +#if STM32_NSPI < 1 +# undef CONFIG_STM32_SPI1 +# undef CONFIG_STM32_SPI2 +#elif STM32_NSPI < 2 +# undef CONFIG_STM32_SPI2 +#endif + +/* STM3210E-EVAL GPIOs **************************************************************/ +/* LEDs */ + +#define GPIO_LED1 (GPIO_OUTPUT|GPIO_CNF_OUTPP|GPIO_MODE_50MHz|\ + GPIO_OUTPUT_CLEAR|GPIO_PORTF|GPIO_PIN6) +#define GPIO_LED2 (GPIO_OUTPUT|GPIO_CNF_OUTPP|GPIO_MODE_50MHz|\ + GPIO_OUTPUT_CLEAR|GPIO_PORTF|GPIO_PIN7) +#define GPIO_LED3 (GPIO_OUTPUT|GPIO_CNF_OUTPP|GPIO_MODE_50MHz|\ + GPIO_OUTPUT_CLEAR|GPIO_PORTF|GPIO_PIN8) +#define GPIO_LED4 (GPIO_OUTPUT|GPIO_CNF_OUTPP|GPIO_MODE_50MHz|\ + GPIO_OUTPUT_CLEAR|GPIO_PORTF|GPIO_PIN9) + +/* BUTTONS -- NOTE that some have EXTI interrupts configured */ + +#define MIN_IRQBUTTON BUTTON_KEY +#define MAX_IRQBUTTON JOYSTICK_UP +#define NUM_IRQBUTTONS (JOYSTICK_UP - BUTTON_KEY + 1) + +#define GPIO_BTN_WAKEUP (GPIO_INPUT|GPIO_CNF_INFLOAT|GPIO_MODE_INPUT|\ + GPIO_PORTA|GPIO_PIN0) +#define GPIO_BTN_TAMPER (GPIO_INPUT|GPIO_CNF_INFLOAT|GPIO_MODE_INPUT|\ + GPIO_PORTC|GPIO_PIN13) +#define GPIO_BTN_KEY (GPIO_INPUT|GPIO_CNF_INFLOAT|GPIO_MODE_INPUT|\ + GPIO_EXTI|GPIO_PORTG|GPIO_PIN8) +#define GPIO_JOY_SEL (GPIO_INPUT|GPIO_CNF_INFLOAT|GPIO_MODE_INPUT|\ + GPIO_EXTI|GPIO_PORTG|GPIO_PIN7) +#define GPIO_JOY_DOWN (GPIO_INPUT|GPIO_CNF_INFLOAT|GPIO_MODE_INPUT|\ + GPIO_EXTI|GPIO_PORTD|GPIO_PIN3) +#define GPIO_JOY_LEFT (GPIO_INPUT|GPIO_CNF_INFLOAT|GPIO_MODE_INPUT|\ + GPIO_EXTI|GPIO_PORTG|GPIO_PIN14) +#define GPIO_JOY_RIGHT (GPIO_INPUT|GPIO_CNF_INFLOAT|GPIO_MODE_INPUT|\ + GPIO_EXTI|GPIO_PORTG|GPIO_PIN13) +#define GPIO_JOY_UP (GPIO_INPUT|GPIO_CNF_INFLOAT|GPIO_MODE_INPUT|\ + GPIO_EXTI|GPIO_PORTG|GPIO_PIN15) + +/* SPI FLASH chip select: PA.4 */ + +#define GPIO_FLASH_CS (GPIO_OUTPUT|GPIO_CNF_OUTPP|GPIO_MODE_50MHz|\ + GPIO_OUTPUT_SET|GPIO_PORTB|GPIO_PIN2) + +/* USB Soft Connect Pullup: PB.14 */ + +#define GPIO_USB_PULLUP (GPIO_OUTPUT|GPIO_CNF_OUTOD|GPIO_MODE_50MHz|\ + GPIO_OUTPUT_SET|GPIO_PORTB|GPIO_PIN14) + +/* LM-75 Temperature Sensor: PB.5 */ + +#define GPIO_LM75_OSINT (GPIO_INPUT|GPIO_CNF_INPULLUP|GPIO_MODE_10MHz|\ + GPIO_EXTI|GPIO_PORTB|GPIO_PIN5) + +/************************************************************************************ + * Public Types + ************************************************************************************/ + +/* GPIO settings that will be altered when external memory is selected */ + +struct extmem_save_s +{ + uint32_t gpiod_crl; + uint32_t gpiod_crh; + uint32_t gpioe_crl; + uint32_t gpioe_crh; + uint32_t gpiof_crl; + uint32_t gpiof_crh; + uint32_t gpiog_crl; + uint32_t gpiog_crh; +}; + +/************************************************************************************ + * Public data + ************************************************************************************/ + +#ifndef __ASSEMBLY__ + +/* GPIO configurations common to SRAM and NOR Flash */ + +#define NCOMMON_CONFIG 37 +extern const uint16_t g_commonconfig[NCOMMON_CONFIG]; + +/************************************************************************************ + * Public Functions + ************************************************************************************/ + +/************************************************************************************ + * Name: stm32_spiinitialize + * + * Description: + * Called to configure SPI chip select GPIO pins for the STM3210E-EVAL board. + * + ************************************************************************************/ + +extern void weak_function stm32_spiinitialize(void); + +/************************************************************************************ + * Name: stm32_usbinitialize + * + * Description: + * Called to setup USB-related GPIO pins for the STM3210E-EVAL board. + * + ************************************************************************************/ + +extern void weak_function stm32_usbinitialize(void); + +/************************************************************************************ + * Name: stm32_extcontextsave + * + * Description: + * Save current GPIOs that will used by external memory configurations + * + ************************************************************************************/ + +#ifdef CONFIG_STM32_FSMC +extern void stm32_extcontextsave(struct extmem_save_s *save); + +/************************************************************************************ + * Name: stm32_extcontextrestore + * + * Description: + * Restore GPIOs that were used by external memory configurations + * + ************************************************************************************/ + +extern void stm32_extcontextrestore(struct extmem_save_s *restore); + +/************************************************************************************ + * Name: stm32_extmemgpios + * + * Description: + * Initialize GPIOs for NOR or SRAM + * + ************************************************************************************/ + +extern void stm32_extmemgpios(const uint16_t *gpios, int ngpios); + +/************************************************************************************ + * Name: stm32_enablefsmc + * + * Description: + * enable clocking to the FSMC module + * + ************************************************************************************/ + +extern void stm32_enablefsmc(void); + +/************************************************************************************ + * Name: stm32_disablefsmc + * + * Description: + * enable clocking to the FSMC module + * + ************************************************************************************/ + +extern void stm32_disablefsmc(void); + +/************************************************************************************ + * Name: stm32_selectnor + * + * Description: + * Initialize to access NOR flash + * + ************************************************************************************/ + +extern void stm32_selectnor(void); + +/************************************************************************************ + * Name: stm32_deselectnor + * + * Description: + * Disable NOR FLASH + * + ************************************************************************************/ + +extern void stm32_deselectnor(void); + +/************************************************************************************ + * Name: stm32_selectsram + * + * Description: + * Initialize to access external SRAM + * + ************************************************************************************/ + +extern void stm32_selectsram(void); + +/************************************************************************************ + * Name: stm32_deselectsram + * + * Description: + * Disable external SRAM + * + ************************************************************************************/ + +extern void stm32_deselectsram(void); + +/************************************************************************************ + * Name: stm32_selectlcd + * + * Description: + * Initialize to the LCD + * + ************************************************************************************/ + +extern void stm32_selectlcd(void); + +/************************************************************************************ + * Name: stm32_deselectlcd + * + * Description: + * Disable the LCD + * + ************************************************************************************/ + +extern void stm32_deselectlcd(void); + +#endif /* CONFIG_STM32_FSMC */ + +#endif /* __ASSEMBLY__ */ +#endif /* __CONFIGS_STM3210E_EVAL_SRC_STM3210E_INTERNAL_H */ + diff --git a/nuttx/configs/stm3210e-eval/src/up_boot.c b/nuttx/configs/stm3210e-eval/src/up_boot.c old mode 100755 new mode 100644 diff --git a/nuttx/configs/stm3210e-eval/src/up_lcd.c b/nuttx/configs/stm3210e-eval/src/up_lcd.c old mode 100755 new mode 100644 diff --git a/nuttx/configs/stm3210e-eval/src/up_leds.c b/nuttx/configs/stm3210e-eval/src/up_leds.c old mode 100755 new mode 100644 diff --git a/nuttx/configs/stm3210e-eval/src/up_lm75.c b/nuttx/configs/stm3210e-eval/src/up_lm75.c new file mode 100644 index 000000000..18107d947 --- /dev/null +++ b/nuttx/configs/stm3210e-eval/src/up_lm75.c @@ -0,0 +1,128 @@ +/************************************************************************************ + * configs/stm3210e-eval/src/up_lm75.c + * arch/arm/src/board/up_lm75.c + * + * Copyright (C) 2011 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt + * + * 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 + +#include + +#include +#include + +#include "stm32.h" +#include "stm32_i2c.h" +#include "stm3210e-internal.h" + +#if defined(CONFIG_I2C) && defined(CONFIG_I2C_LM75) && defined(CONFIG_STM32_I2C1) + +/************************************************************************************ + * Definitions + ************************************************************************************/ + +/************************************************************************************ + * Private Functions + ************************************************************************************/ + +/************************************************************************************ + * Public Functions + ************************************************************************************/ + +/************************************************************************************ + * Name: stm32_lm75initialize + * + * Description: + * Initialize and register the LM-75 Temperature Sensor driver. + * + * Input parameters: + * devpath - The full path to the driver to register. E.g., "/dev/temp0" + * + * Returned Value: + * Zero (OK) on success; a negated errno value on failure. + * + ************************************************************************************/ + +int stm32_lm75initialize(FAR const char *devpath) +{ + FAR struct i2c_dev_s *i2c; + int ret; + + /* Configure PB.5 as Input pull-up. This pin can be used as a temperature + * sensor interrupt (not fully implemented). + */ + + stm32_configgpio(GPIO_LM75_OSINT); + + /* Get an instance of the I2C1 interface */ + + i2c = up_i2cinitialize(1); + if (!i2c) + { + return -ENODEV; + } + + /* Then register the temperature sensor */ + + ret = lm75_register(devpath, i2c, 0x48); + if (ret < 0) + { + (void)up_i2cuninitialize(i2c); + } + return ret; +} + +/************************************************************************************ + * Name: stm32_lm75attach + * + * Description: + * Attach the LM-75 interrupt handler + * + * Input parameters: + * irqhandler - the LM-75 interrupt handler + * + * Returned Value: + * The previous LM-75 interrupt handler + * + ************************************************************************************/ + +xcpt_t stm32_lm75attach(xcpt_t irqhandler) +{ + return stm32_gpiosetevent(GPIO_LM75_OSINT, true, true, true, irqhandler); +} + +#endif /* CONFIG_I2C && CONFIG_I2C_LM75 && CONFIG_STM32_I2C1 */ diff --git a/nuttx/configs/stm3210e-eval/src/up_nsh.c b/nuttx/configs/stm3210e-eval/src/up_nsh.c old mode 100755 new mode 100644 diff --git a/nuttx/configs/stm3210e-eval/src/up_spi.c b/nuttx/configs/stm3210e-eval/src/up_spi.c old mode 100755 new mode 100644 diff --git a/nuttx/configs/stm3210e-eval/src/up_usbstrg.c b/nuttx/configs/stm3210e-eval/src/up_usbstrg.c old mode 100755 new mode 100644 diff --git a/nuttx/drivers/sensors/Make.defs b/nuttx/drivers/sensors/Make.defs index 1b3c3de03..bda3e8ed3 100644 --- a/nuttx/drivers/sensors/Make.defs +++ b/nuttx/drivers/sensors/Make.defs @@ -38,6 +38,10 @@ ifeq ($(CONFIG_I2C),y) CSRCS += lis331dl.c + +ifeq ($(CONFIG_I2C_LM75),y) + CSRCS += lm75.c +endif endif # Include sensor driver build support diff --git a/nuttx/drivers/sensors/lm75.c b/nuttx/drivers/sensors/lm75.c new file mode 100644 index 000000000..600f9aab3 --- /dev/null +++ b/nuttx/drivers/sensors/lm75.c @@ -0,0 +1,473 @@ +/**************************************************************************** + * drivers/sensors/lm75.c + * Character driver for the STMicro LM-75 Temperature Sensor + * + * Copyright (C) 2011 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt + * + * 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 + +#include +#include +#include + +#include +#include +#include + +#if defined(CONFIG_I2C) && defined(CONFIG_I2C_LM75) + +/**************************************************************************** + * Pre-processor Definitions + ****************************************************************************/ + +/* Centigrade to Fahrenheit conversion: F = 9*C/5 + 32 */ + +#define B16_9DIV5 (9 * 65536 / 5) +#define B16_32 (32 * 65536); + +/**************************************************************************** + * Private + ****************************************************************************/ + +struct lm75_dev_s +{ + FAR struct i2c_dev_s *i2c; /* I2C interface */ + uint8_t addr; /* I2C address */ + bool fahrenheit; /* true: temperature will be reported in fahrenheit */ +}; + +/**************************************************************************** + * Private Function Prototypes + ****************************************************************************/ +/* I2C Helpers */ + +static int lm75_readb8(FAR struct lm75_dev_s *priv, uint8_t regaddr, + FAR b8_t *regvalue); +#if 0 // Not used +static int lm75_writeb8(FAR struct lm75_dev_s *priv, uint8_t regaddr, + b8_t regval); +#endif +static int lm75_readtemp(FAR struct lm75_dev_s *priv, b16_t *temp); +static int lm75_readconf(FAR struct lm75_dev_s *priv, uint8_t *conf); +static int lm75_writeconf(FAR struct lm75_dev_s *priv, uint8_t conf); + +/* Character driver methods */ + +static int lm75_open(FAR struct file *filep); +static int lm75_close(FAR struct file *filep); +static ssize_t lm75_read(FAR struct file *, FAR char *, size_t); +static ssize_t lm75_write(FAR struct file *filep, FAR const char *buffer, size_t buflen); +static int lm75_ioctl(FAR struct file *filep,int cmd,unsigned long arg); + +/**************************************************************************** + * Private Data + ****************************************************************************/ + +static const struct file_operations lm75_fops = +{ + lm75_open, + lm75_close, + lm75_read, + lm75_write, + 0, + lm75_ioctl +#ifndef CONFIG_DISABLE_POLL + , 0 +#endif +}; + +/**************************************************************************** + * Private Functions + ****************************************************************************/ +/**************************************************************************** + * Name: lm75_readb8 + * + * Description: + * Read a 16-bit register (LM75_TEMP_REG, LM75_THYS_REG, or LM75_TOS_REG) + * + ****************************************************************************/ + +static int lm75_readb8(FAR struct lm75_dev_s *priv, uint8_t regaddr, + FAR b8_t *regvalue) +{ + uint8_t buffer[2]; + int ret; + + /* Write the register address */ + + I2C_SETADDRESS(priv->i2c, priv->addr, 7); + ret = I2C_WRITE(priv->i2c, ®addr, 1); + if (ret < 0) + { + return ret; + } + + /* Restart and read 16-bits from the register (discarding 7) */ + + ret = I2C_READ(priv->i2c, buffer, 2); + if (ret < 0) + { + return ret; + } + + /* Data format is: TTTTTTTT Txxxxxxx where TTTTTTTTT is a nine-bit + * temperature value with LSB = 0.5 degrees centigrade. So the raw + * data is b8_t + */ + + *regvalue = (b8_t)buffer[0] << 8 | (b8_t)buffer[1]; + return OK; +} + +/**************************************************************************** + * Name: lm75_writeb8 + * + * Description: + * Write to a 16-bit register (LM75_TEMP_REG, LM75_THYS_REG, or LM75_TOS_REG) + * + ****************************************************************************/ +#if 0 // Not used +static int lm75_writeb8(FAR struct lm75_dev_s *priv, uint8_t regaddr, + b8_t regval) +{ + uint8_t buffer[3]; + + /* Set up a 3 byte message to send */ + + buffer[0] = regaddr; + buffer[1] = regval >> 8; + buffer[2] = regval; + + /* Write the register address followed by the data (no RESTART) */ + + I2C_SETADDRESS(priv->i2c, priv->addr, 7); + return I2C_WRITE(priv->i2c, buffer, 3); +} +#endif + +/**************************************************************************** + * Name: lm75_readtemp + * + * Description: + * Read the temperature register with special scaling (LM75_TEMP_REG) + * + ****************************************************************************/ + +static int lm75_readtemp(FAR struct lm75_dev_s *priv, b16_t *temp) +{ + b8_t temp8; + b16_t temp16; + int ret; + + /* Read the raw temperature data. Data format is: TTTTTTTT Txxxxxxx where + * TTTTTTTTT is a nine-bit temperature value with LSB = 0.5 degrees centigrade. + * So the raw data is b8_t. + */ + + ret = lm75_readb8(priv, LM75_TEMP_REG, &temp8); + if (ret < 0) + { + return ret; + } + + /* Convert to b16_t */ + + temp16 = b8tob16(temp8); + + /* Was fahrenheit requested? */ + + if (priv->fahrenheit) + { + /* Centigrade to Fahrenheit conversion: F = 9*C/5 + 32 */ + + temp16 = b16mulb16(temp16, B16_9DIV5) + B16_32; + } + + *temp = temp16; + return OK; +} + +/**************************************************************************** + * Name: lm75_readconf + * + * Description: + * Read the 8-bit LM75 configuration register + * + ****************************************************************************/ + +static int lm75_readconf(FAR struct lm75_dev_s *priv, uint8_t *conf) +{ + uint8_t buffer; + int ret; + + /* Write the configuration register address */ + + I2C_SETADDRESS(priv->i2c, priv->addr, 7); + + buffer = LM75_CONF_REG; + ret = I2C_WRITE(priv->i2c, &buffer, 1); + if (ret < 0) + { + return ret; + } + + /* Restart and read 8-bits from the register */ + + ret = I2C_READ(priv->i2c, conf, 1); + return ret; +} + +/**************************************************************************** + * Name: lm75_writeconf + * + * Description: + * Write to a 8-bit LM75 configuration register. + * + ****************************************************************************/ + +static int lm75_writeconf(FAR struct lm75_dev_s *priv, uint8_t conf) +{ + uint8_t buffer[2]; + + /* Set up a 2 byte message to send */ + + buffer[0] = LM75_CONF_REG; + buffer[1] = conf; + + /* Write the register address followed by the data (no RESTART) */ + + I2C_SETADDRESS(priv->i2c, priv->addr, 7); + return I2C_WRITE(priv->i2c, buffer, 2); +} + +/**************************************************************************** + * Name: lm75_open + * + * Description: + * This function is called whenever the LM-75 device is opened. + * + ****************************************************************************/ + +static int lm75_open(FAR struct file *filep) +{ + return OK; +} + +/**************************************************************************** + * Name: lm75_close + * + * Description: + * This routine is called when the LM-75 device is closed. + * + ****************************************************************************/ + +static int lm75_close(FAR struct file *filep) +{ + return OK; +} + +/**************************************************************************** + * Name: lm75_read + ****************************************************************************/ + +static ssize_t lm75_read(FAR struct file *filep, FAR char *buffer, size_t buflen) +{ + FAR struct inode *inode = filep->f_inode; + FAR struct lm75_dev_s *priv = inode->i_private; + FAR b16_t *ptr; + ssize_t nsamples; + int ret; + + /* How many samples were requested to get? */ + + nsamples = buflen/sizeof(b16_t); + ptr = (FAR b16_t *)buffer; + + /* Get the requested number of samples */ + + for (; nsamples > 0; nsamples--) + { + b16_t temp; + + /* Read the next b16_t temperature value */ + + ret = lm75_readtemp(priv, &temp); + if (ret < 0) + { + return (ssize_t)ret; + } + + /* Save the temperature value in the user buffer */ + + *ptr++ = temp; + } + + return nsamples * sizeof(b16_t); +} + +/**************************************************************************** + * Name: lm75_write + ****************************************************************************/ + +static ssize_t lm75_write(FAR struct file *filep, FAR const char *buffer, + size_t buflen) +{ + return -ENOSYS; +} + +/**************************************************************************** + * Name: lm75_ioctl + ****************************************************************************/ + +static int lm75_ioctl(FAR struct file *filep, int cmd, unsigned long arg) +{ + FAR struct inode *inode = filep->f_inode; + FAR struct lm75_dev_s *priv = inode->i_private; + int ret = OK; + + switch (arg) + { + /* Read from the configuration register. Arg: uint8_t* pointer */ + + case SNIOC_READCONF: + { + FAR uint8_t *ptr = (FAR uint8_t *)((uintptr_t)arg); + ret = lm75_readconf(priv, ptr); + } + break; + + /* Wrtie to the configuration register. Arg: uint8_t value */ + + case SNIOC_WRITECONF: + ret = lm75_writeconf(priv, (uint8_t)arg); + break; + + /* Shutdown the LM75, Arg: None */ + + case SNIOC_SHUTDOWN: + { + uint8_t conf; + ret = lm75_readconf(priv, &conf); + if (ret == OK) + { + ret = lm75_writeconf(priv, conf | LM75_CONF_SHUTDOWN); + } + } + break; + + /* Powerup the LM75, Arg: None */ + + case SNIOC_POWERUP: + { + uint8_t conf; + ret = lm75_readconf(priv, &conf); + if (ret == OK) + { + ret = lm75_writeconf(priv, conf & ~LM75_CONF_SHUTDOWN); + } + } + break; + + /* Report samples in Fahrenheit */ + + case SNIOC_FAHRENHEIT: + priv->fahrenheit = true; + break; + + /* Report Samples in Centigrade */ + + case SNIOC_CENTIGRADE: + priv->fahrenheit = false; + break; + + default: + ret = -ENOTTY; + break; + } + + return ret; +} + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: lm75_register + * + * Description: + * Register the LM-75 character device as 'devpath' + * + * Input Parameters: + * devpath - The full path to the driver to register. E.g., "/dev/temp0" + * i2c - An instance of the I2C interface to use to communicate with LM75 + * addr - The I2C address of the LM-75. The base I2C address of the LM75 + * is 0x48. Bits 0-3 can be controlled to get 8 unique addresses from 0x48 + * through 0x4f. + * + * Returned Value: + * Zero (OK) on success; a negated errno value on failure. + * + ****************************************************************************/ + +int lm75_register(FAR const char *devpath, FAR struct i2c_dev_s *i2c, uint8_t addr) +{ + FAR struct lm75_dev_s *priv; + int ret; + + /* Initialize the LM-75 device structure */ + + priv = (FAR struct lm75_dev_s *)malloc(sizeof(struct lm75_dev_s)); + if (!priv) + { + return -ENOMEM; + } + + priv->i2c = i2c; + priv->addr = addr; + priv->fahrenheit = false; + + /* Register the character driver */ + + ret = register_driver(devpath, &lm75_fops, 0555, priv); + if (ret < 0) + { + free(priv); + } + return ret; +} +#endif /* CONFIG_I2C && CONFIG_I2C_LM75 */ diff --git a/nuttx/include/nuttx/ioctl.h b/nuttx/include/nuttx/ioctl.h index 0ce363f24..194b83715 100644 --- a/nuttx/include/nuttx/ioctl.h +++ b/nuttx/include/nuttx/ioctl.h @@ -60,6 +60,7 @@ #define _SIOCBASE (0x8b00) /* Socket ioctl commands */ #define _ARPBASE (0x8c00) /* ARP ioctl commands */ #define _TSBASE (0x8d00) /* Touchscreen ioctl commands */ +#define _SNBASE (0x8e00) /* Sensor ioctl commands */ /* Macros used to manage ioctl commands */ @@ -161,11 +162,16 @@ #define _ARPIOCVALID(c) (_IOC_TYPE(c)==_ARPBASE) #define _ARPIOC(nr) _IOC(_ARPBASE,nr) -/* NuttX ARP touchscrren ioctl definitions (see nuttx/input/touchscreen.h) **/ +/* NuttX ARP touchscreen ioctl definitions (see nuttx/input/touchscreen.h) **/ #define _TSIOCVALID(c) (_IOC_TYPE(c)==_TSBASE) #define _TSIOC(nr) _IOC(_TSBASE,nr) +/* NuttX ARP sensor ioctl definitions (see nuttx/sensor/*.h) ****************/ + +#define _SNIOCVALID(c) (_IOC_TYPE(c)==_SNBASE) +#define _SNIOC(nr) _IOC(_SNBASE,nr) + /**************************************************************************** * Public Type Definitions ****************************************************************************/ diff --git a/nuttx/include/nuttx/sensors/lm75.h b/nuttx/include/nuttx/sensors/lm75.h new file mode 100644 index 000000000..54100088e --- /dev/null +++ b/nuttx/include/nuttx/sensors/lm75.h @@ -0,0 +1,129 @@ +/**************************************************************************** + * include/nuttx/lm75.h + * + * Copyright (C) 2011 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt + * + * 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_SENSORSD_LM75_H +#define __NUTTX_SENSORSD_LM75_H + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include +#include + +/**************************************************************************** + * Pre-Processor Definitions + ****************************************************************************/ +/* Configuration ************************************************************ + * CONFIG_I2C - Enables support for I2C drivers + * CONFIG_I2C_LM75 - Enables support for the LM-75 driver + */ + +#define CONFIG_LM75_BASEADDR 0x48 + +/* IOCTL Commands ***********************************************************/ + +#define SNIOC_READCONF _SNIOC(0x0001) /* Arg: uint8_t* pointer */ +#define SNIOC_WRITECONF _SNIOC(0x0002) /* Arg: uint8_t value */ +#define SNIOC_SHUTDOWN _SNIOC(0x0003) /* Arg: None */ +#define SNIOC_POWERUP _SNIOC(0x0004) /* Arg: None */ +#define SNIOC_FAHRENHEIT _SNIOC(0x0005) /* Arg: None */ +#define SNIOC_CENTIGRADE _SNIOC(0x0006) /* Arg: None */ + +/* LM-75 Register Definitions ***********************************************/ +/* LM-75 Registers addresses */ + +#define LM75_TEMP_REG 0x00 /* Temperature Register */ +#define LM75_CONF_REG 0x01 /* Configuration Register */ +#define LM75_THYS_REG 0x02 /* Temperature Register */ +#define LM75_TOS_REG 0x03 /* Over-temp Shutdown threshold Register */ + +/* Configuration Register Bit Definitions */ + +#define LM75_CONF_SHUTDOWN (1 << 0) /* Bit 0: Put LM75 goes in low power shutdown mode */ +#define LM75_CONF_INTMODE (1 << 1) /* Bit 1: 0=Comparator 1=Interrupt mode */ +#define LM75_CONF_POLARITY (1 << 2) /* Bit 2: 0=O.S. Active low 1=active high */ +#define LM75_CONF_FAULTQ (3) /* Bits 3-4: # faults before setting O.S. */ + +/* NOTE: When temperature values are read, they are return as b16_t, fixed + * precision integer values (see include/fixedmath.h). + */ + +/**************************************************************************** + * Global Data + ****************************************************************************/ + +/**************************************************************************** + * Global Function Prototypes + ****************************************************************************/ + +/**************************************************************************** + * Global Function Prototypes + ****************************************************************************/ + +#ifdef __cplusplus +#define EXTERN extern "C" +extern "C" { +#else +#define EXTERN extern +#endif + +/**************************************************************************** + * Name: lm75_register + * + * Description: + * Register the LM-75 character device as 'devpath' + * + * Input Parameters: + * devpath - The full path to the driver to register. E.g., "/dev/temp0" + * i2c - An instance of the I2C interface to use to communicate with LM75 + * addr - The I2C address of the LM-75. The base I2C address of the LM75 + * is 0x48. Bits 0-3 can be controlled to get 8 unique addresses from 0x48 + * through 0x4f. + * + * Returned Value: + * Zero (OK) on success; a negated errno value on failure. + * + ****************************************************************************/ + +EXTERN int lm75_register(FAR const char *devpath, FAR struct i2c_dev_s *i2c, + uint8_t addr); + +#undef EXTERN +#ifdef __cplusplus +} +#endif + +#endif /* __NUTTX_SENSORSD_LM75_H */