boards/stm32f411-minimum: add support for hx711 driver
Signed-off-by: Michał Łyszczek <michal.lyszczek@bofc.pl>
This commit is contained in:
Michał Łyszczek
Alan Carvalho de Assis
parent
84a2cab886
commit
d904a02392
@ -34,4 +34,53 @@ config STM32F411MINIMUM_FLASH_MINOR
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---help---
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Sets the minor number for the FLASH MTD /dev entry
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menuconfig STM32F411MINIMUM_HX711
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bool "Enable hx711 scale sensor"
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default n
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select ADC_HX711
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if STM32F411MINIMUM_HX711
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choice
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prompt "Select GPIO port for clock pin"
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default STM32F411MINIMUM_HX711_CLK_PORTA
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config STM32F411MINIMUM_HX711_CLK_PORTA
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bool "Port A"
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config STM32F411MINIMUM_HX711_CLK_PORTB
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bool "Port B"
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endchoice # Select GPIO port for clock pin
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config STM32F411MINIMUM_HX711_CLK_PIN
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int "Select GPIO pin number for clock pin"
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default 1
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range 0 15
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choice
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prompt "Select GPIO port for data pin"
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default STM32F411MINIMUM_HX711_DATA_PORTA
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config STM32F411MINIMUM_HX711_DATA_PORTA
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bool "Port A"
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config STM32F411MINIMUM_HX711_DATA_PORTB
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bool "Port B"
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endchoice # Select GPIO port for data pin
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config STM32F411MINIMUM_HX711_DATA_PIN
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int "Select GPIO pin number for data pin"
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default 2
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range 0 15
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endif # STM32F411MINIMUM_HX711
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menuconfig STM32F411MINIMUM_GPIO
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select DEV_GPIO
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bool "enable gpio subsystem"
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if STM32F411MINIMUM_GPIO
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source boards/arm/stm32/stm32f411-minimum/Kconfig.gpio
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endif
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endif
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@ -48,6 +48,10 @@ if(CONFIG_USBMSC)
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list(APPEND SRCS stm32_usbmsc.c)
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endif()
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if(CONFIG_ADC_HX711)
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list(APPEND SRCS stm32_hx711.c)
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endif()
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target_sources(board PRIVATE ${SRCS})
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set_property(GLOBAL PROPERTY LD_SCRIPT
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@ -30,6 +30,10 @@ ifeq ($(CONFIG_ARCH_LEDS),y)
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CSRCS += stm32_autoleds.c
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endif
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ifeq ($(CONFIG_ADC_HX711),y)
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CSRCS += stm32_hx711.c
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endif
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ifeq ($(CONFIG_SPI),y)
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CSRCS += stm32_spi.c
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endif
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@ -84,6 +84,14 @@ int stm32_bringup(void)
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{
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int ret = OK;
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#ifdef CONFIG_ADC_HX711
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ret = stm32_hx711_initialize();
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if (ret != OK)
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{
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aerr("ERROR: Failed to initialize hx711: %d\n", ret);
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}
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#endif
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#if defined(CONFIG_STM32_OTGFS) && defined(CONFIG_USBHOST)
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/* Initialize USB host operation. stm32_usbhost_initialize() starts a
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* thread will monitor for USB connection and disconnection events.
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102
boards/arm/stm32/stm32f411-minimum/src/stm32_hx711.c
Normal file
102
boards/arm/stm32/stm32f411-minimum/src/stm32_hx711.c
Normal file
@ -0,0 +1,102 @@
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/****************************************************************************
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* boards/arm/stm32/stm32f411-minimum/src/stm32_hx711.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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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 <nuttx/analog/hx711.h>
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#include <nuttx/compiler.h>
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#include <arch/board/board.h>
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#include <arch/stm32/chip.h>
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#include <debug.h>
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#include "stm32_gpio.h"
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#include "stm32f411-minimum.h"
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/****************************************************************************
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* Private Function Prototypes
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****************************************************************************/
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static int stm32_hx711_clock_set(unsigned char minor, int value);
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static int stm32_hx711_data_read(unsigned char minor);
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static int stm32_hx711_data_irq(unsigned char minor,
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xcpt_t handler, void *arg);
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/****************************************************************************
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* Private Data
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****************************************************************************/
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struct hx711_lower_s g_lower =
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{
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.data_read = stm32_hx711_data_read,
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.clock_set = stm32_hx711_clock_set,
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.data_irq = stm32_hx711_data_irq,
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.cleanup = NULL
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};
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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static int stm32_hx711_clock_set(unsigned char minor, int value)
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{
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UNUSED(minor);
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stm32_gpiowrite(HX711_CLK_PIN, value);
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return OK;
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}
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static int stm32_hx711_data_read(unsigned char minor)
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{
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UNUSED(minor);
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return stm32_gpioread(HX711_DATA_PIN);
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}
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static int stm32_hx711_data_irq(unsigned char minor,
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xcpt_t handler, void *arg)
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{
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UNUSED(minor);
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return stm32_gpiosetevent(HX711_DATA_PIN, false, true, true, handler, arg);
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};
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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int stm32_hx711_initialize(void)
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{
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int ret;
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stm32_configgpio(HX711_DATA_PIN);
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stm32_configgpio(HX711_CLK_PIN);
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ret = hx711_register(0, &g_lower);
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if (ret != 0)
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{
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aerr("ERROR: Failed to register hx711 device: %d\n", ret);
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return -1;
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}
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return OK;
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}
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@ -76,6 +76,29 @@
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# endif
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#endif
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/* HX711 pins */
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#ifdef CONFIG_ADC_HX711
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# ifdef CONFIG_STM32F411MINIMUM_HX711_CLK_PORTB
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# define HX711_CLK_PORT GPIO_PORTB
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# else
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# define HX711_CLK_PORT GPIO_PORTA
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# endif
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# ifdef CONFIG_STM32F411MINIMUM_HX711_DATA_PORTB
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# define HX711_DATA_PORT GPIO_PORTB
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# else
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# define HX711_DATA_PORT GPIO_PORTA
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# endif
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#define HX711_CLK_PIN (GPIO_OUTPUT|GPIO_PUSHPULL|GPIO_OUTPUT_SET|\
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GPIO_SPEED_2MHz|GPIO_PULLUP|\
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HX711_CLK_PORT|CONFIG_STM32F411MINIMUM_HX711_CLK_PIN)
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#define HX711_DATA_PIN (GPIO_INPUT|GPIO_SPEED_2MHz|GPIO_PULLUP|GPIO_EXTI|\
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HX711_DATA_PORT|CONFIG_STM32F411MINIMUM_HX711_DATA_PIN)
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#endif /* CONFIG_HX711 */
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/****************************************************************************
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* Public Data
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****************************************************************************/
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@ -99,6 +122,18 @@ extern struct spi_dev_s *g_spi2;
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void stm32_spidev_initialize(void);
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/****************************************************************************
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* Name: stm32_hx711_initialize
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*
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* Description:
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* Initialize hx711 chip
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*
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****************************************************************************/
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#ifdef CONFIG_ADC_HX711
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int stm32_hx711_initialize(void);
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#endif
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/****************************************************************************
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* Name: stm32_mmcsd_initialize
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*
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