Configure stm32f4discovery board to support MAX31855 driver
This commit is contained in:
Alan Carvalho de Assis
Gregory Nutt
parent
8a9fe183e3
commit
9d490482d8
@ -1,7 +1,7 @@
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/************************************************************************************
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* configs/stm32f4discovery/include/board.h
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*
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* Copyright (C) 2012, 2014 Gregory Nutt. All rights reserved.
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* Copyright (C) 2012, 2014-2015 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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@ -255,10 +255,8 @@
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* for USART6. This is the preferred serial console for use with the STM32F4DIS-BB.
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*/
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#ifdef CONFIG_STM32F4DISBB
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# define GPIO_USART6_RX GPIO_USART6_RX_1
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# define GPIO_USART6_TX GPIO_USART6_TX_1
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#endif
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#define GPIO_USART6_RX GPIO_USART6_RX_1
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#define GPIO_USART6_TX GPIO_USART6_TX_1
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/* PWM
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*
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@ -274,6 +272,12 @@
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#define GPIO_SPI1_MOSI GPIO_SPI1_MOSI_1
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#define GPIO_SPI1_SCK GPIO_SPI1_SCK_1
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/* SPI2 - Test MAX31855 on SPI2 PB10 = SCK, PB14 = MISO */
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#define GPIO_SPI2_MISO GPIO_SPI2_MISO_1
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#define GPIO_SPI2_MOSI GPIO_SPI2_MOSI_1
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#define GPIO_SPI2_SCK GPIO_SPI2_SCK_1
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/* I2C config to use with Nunchuk PB7 (SDA) and PB8 (SCL) */
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#define GPIO_I2C1_SCL GPIO_I2C1_SCL_2
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@ -56,6 +56,10 @@ ifeq ($(CONFIG_BMP180),y)
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CSRCS += stm32_bmp180.c
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endif
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ifeq ($(CONFIG_MAX31855),y)
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CSRCS += stm32_max31855.c
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endif
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ifeq ($(CONFIG_STM32_SDIO),y)
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CSRCS += stm32_sdio.c
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endif
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@ -166,5 +166,9 @@ int stm32_bringup(void)
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}
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#endif
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#ifdef CONFIG_MAX31855
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ret = stm32_max31855initialize("/dev/temp0");
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#endif
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return ret;
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}
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101
configs/stm32f4discovery/src/stm32_max31855.c
Normal file
101
configs/stm32f4discovery/src/stm32_max31855.c
Normal file
@ -0,0 +1,101 @@
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/************************************************************************************
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* configs/stm32f4discovery/src/stm32_max31855.c
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*
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* Copyright (C) 2015 Alan Carvalho de Assis. All rights reserved.
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* Author: Alan Carvalho de Assis <acassis@gmail.com>
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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:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* 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
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* 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
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* 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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/************************************************************************************
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* Included Files
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************************************************************************************/
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#include <nuttx/config.h>
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#include <errno.h>
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#include <debug.h>
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#include <nuttx/spi/spi.h>
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#include <nuttx/sensors/max31855.h>
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#include "stm32.h"
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#include "stm32_spi.h"
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#include "stm32f4discovery.h"
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#if defined(CONFIG_SPI) && defined(CONFIG_MAX31855) && defined(CONFIG_STM32_SPI2)
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/************************************************************************************
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* Pre-processor Definitions
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************************************************************************************/
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#define MAX31855_SPI_PORTNO 2 /* On SPI2 */
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/************************************************************************************
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* Public Functions
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************************************************************************************/
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/************************************************************************************
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* Name: stm32_max31855initialize
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*
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* Description:
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* Initialize and register the MAX31855 Temperature Sensor driver.
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*
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* Input parameters:
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* devpath - The full path to the driver to register. E.g., "/dev/temp0"
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*
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* Returned Value:
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* Zero (OK) on success; a negated errno value on failure.
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*
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************************************************************************************/
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int stm32_max31855initialize(FAR const char *devpath)
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{
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FAR struct spi_dev_s *spi;
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int ret;
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spi = up_spiinitialize(MAX31855_SPI_PORTNO);
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if (!spi)
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{
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return -ENODEV;
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}
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/* Then register the barometer sensor */
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ret = max31855_register(devpath, spi);
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if (ret < 0)
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{
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sndbg("Error registering MAX31855\n");
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}
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return ret;
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}
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#endif /* CONFIG_SPI && CONFIG_MAX31855 */
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@ -97,6 +97,9 @@ void weak_function stm32_spiinitialize(void)
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#ifdef CONFIG_STM32_SPI1
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(void)stm32_configgpio(GPIO_CS_MEMS); /* MEMS chip select */
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#endif
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#if defined(CONFIG_STM32_SPI2) && defined(CONFIG_MAX31855)
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(void)stm32_configgpio(GPIO_MAX31855_CS); /* MAX31855 chip select */
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#endif
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#if defined(CONFIG_LCD_UG2864AMBAG01) || defined(CONFIG_LCD_UG2864HSWEG01)
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(void)stm32_configgpio(GPIO_OLED_CS); /* OLED chip select */
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# if defined(CONFIG_LCD_UG2864AMBAG01)
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@ -160,6 +163,13 @@ uint8_t stm32_spi1status(FAR struct spi_dev_s *dev, enum spi_dev_e devid)
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void stm32_spi2select(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool selected)
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{
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spidbg("devid: %d CS: %s\n", (int)devid, selected ? "assert" : "de-assert");
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#if defined(CONFIG_MAX31855)
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if (devid == SPIDEV_TEMPERATURE)
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{
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stm32_gpiowrite(GPIO_MAX31855_CS, !selected);
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}
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#endif
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}
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uint8_t stm32_spi2status(FAR struct spi_dev_s *dev, enum spi_dev_e devid)
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@ -183,6 +183,9 @@
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#define GPIO_CS_MEMS (GPIO_OUTPUT|GPIO_PUSHPULL|GPIO_SPEED_50MHz|\
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GPIO_OUTPUT_SET|GPIO_PORTE|GPIO_PIN3)
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#define GPIO_MAX31855_CS (GPIO_OUTPUT|GPIO_PUSHPULL|GPIO_SPEED_50MHz|\
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GPIO_OUTPUT_SET|GPIO_PORTD|GPIO_PIN8)
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/* USB OTG FS
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*
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* PA9 OTG_FS_VBUS VBUS sensing (also connected to the green LED)
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