diff --git a/configs/stm32f103-minimum/src/Makefile b/configs/stm32f103-minimum/src/Makefile index 4f8b8943204..b9062f9b5e7 100644 --- a/configs/stm32f103-minimum/src/Makefile +++ b/configs/stm32f103-minimum/src/Makefile @@ -69,6 +69,10 @@ ifeq ($(CONFIG_LEDS_APA102),y) CSRCS += stm32_apa102.c endif +ifeq ($(CONFIG_LM75_I2C),y) + CSRCS += stm32_lm75.c +endif + ifeq ($(CONFIG_RGBLED),y) CSRCS += stm32_rgbled.c endif diff --git a/configs/stm32f103-minimum/src/stm32_bringup.c b/configs/stm32f103-minimum/src/stm32_bringup.c index f8d2d7f3950..fcd02bc641f 100644 --- a/configs/stm32f103-minimum/src/stm32_bringup.c +++ b/configs/stm32f103-minimum/src/stm32_bringup.c @@ -204,6 +204,16 @@ int stm32_bringup(void) } #endif +#ifdef CONFIG_LM75_I2C + /* Configure and initialize the LM75 sensor */ + + ret = stm32_lm75initialize("/dev/temp"); + if (ret < 0) + { + syslog(LOG_ERR, "ERROR: stm32_lm75initialize() failed: %d\n", ret); + } +#endif + #ifdef CONFIG_RGBLED /* Configure and initialize the RGB LED. */ diff --git a/configs/stm32f103-minimum/src/stm32_lm75.c b/configs/stm32f103-minimum/src/stm32_lm75.c new file mode 100644 index 00000000000..7cd9b2422ee --- /dev/null +++ b/configs/stm32f103-minimum/src/stm32_lm75.c @@ -0,0 +1,123 @@ +/************************************************************************************ + * configs/stm32f103-minimum/src/stm32_lm75.c + * + * Copyright (C) 2017 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 "stm32f103_minimum.h" + +#if defined(CONFIG_I2C) && defined(CONFIG_LM75_I2C) && defined(CONFIG_STM32_I2C1) + +/************************************************************************************ + * 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_master_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 = stm32_i2cbus_initialize(1); + if (!i2c) + { + return -ENODEV; + } + + /* Then register the temperature sensor */ + + ret = lm75_register(devpath, i2c, 0x48); + if (ret < 0) + { + (void)stm32_i2cbus_uninitialize(i2c); + } + + return ret; +} + +/************************************************************************************ + * Name: stm32_lm75attach + * + * Description: + * Attach the LM-75 interrupt handler + * + * Input parameters: + * irqhandler - the LM-75 interrupt handler + * arg - The argument that will accompany the interrupt + * + * Returned Value: + * Zero (OK) returned on success; a negated errno value is returned on failure. + * + ************************************************************************************/ + +int stm32_lm75attach(xcpt_t irqhandler, void *arg) +{ + (void)stm32_gpiosetevent(GPIO_LM75_OSINT, true, true, true, irqhandler, arg); + return OK; +} + +#endif /* CONFIG_I2C && CONFIG_LM75_I2C && CONFIG_STM32_I2C1 */ + diff --git a/configs/stm32f103-minimum/src/stm32f103_minimum.h b/configs/stm32f103-minimum/src/stm32f103_minimum.h index 6d5c8611771..1f9b66f933d 100644 --- a/configs/stm32f103-minimum/src/stm32f103_minimum.h +++ b/configs/stm32f103-minimum/src/stm32f103_minimum.h @@ -117,6 +117,10 @@ #define STM32F103MINIMUM_PWMTIMER 3 #define STM32F103MINIMUM_PWMCHANNEL 3 +/* LM-75 Temperature Sensor: PA.0 */ + +#define GPIO_LM75_OSINT (GPIO_INPUT|GPIO_CNF_INFLOAT|GPIO_PORTA|GPIO_PIN0) + /* nRF24 Configuration */ /* NRF24L01 chip enable: PB.1 */ @@ -219,6 +223,18 @@ void stm32_spidev_initialize(void); int stm32_hcsr04_initialize(FAR const char *devname); +/************************************************************************************ + * Name: stm32_lm75initialize + * + * Description: + * Called to initialize LM75 temperature sensor + * + ************************************************************************************/ + +#ifdef CONFIG_LM75_I2C +int stm32_lm75initialize(FAR const char *devpath); +#endif + /************************************************************************************ * Name: stm32_w25initialize *