stm32f401rc-rs485: Add buttons support
This commit is contained in:
Rodrigo Sim
Xiang Xiao
parent
014029c649
commit
a3e3e0b1ec
@ -18,13 +18,25 @@ CONFIG_ARCH_CHIP="stm32"
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CONFIG_ARCH_CHIP_STM32=y
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CONFIG_ARCH_CHIP_STM32F401RC=y
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CONFIG_ARCH_INTERRUPTSTACK=2048
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CONFIG_ARCH_IRQBUTTONS=y
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CONFIG_ARCH_STACKDUMP=y
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CONFIG_BOARD_LOOPSPERMSEC=8499
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CONFIG_BUILTIN=y
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CONFIG_EXAMPLES_BUTTONS=y
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CONFIG_EXAMPLES_BUTTONS_NAME0="SW3"
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CONFIG_EXAMPLES_BUTTONS_NAME1="SW4"
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CONFIG_EXAMPLES_BUTTONS_NAME2="SW5"
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CONFIG_EXAMPLES_BUTTONS_NAME3="SW6"
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CONFIG_EXAMPLES_BUTTONS_NAMES=y
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CONFIG_EXAMPLES_BUTTONS_QTD=4
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CONFIG_HAVE_CXX=y
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CONFIG_HAVE_CXXINITIALIZE=y
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CONFIG_INIT_ENTRYPOINT="nsh_main"
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CONFIG_INPUT=y
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CONFIG_INPUT_BUTTONS=y
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CONFIG_INPUT_BUTTONS_LOWER=y
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CONFIG_INTELHEX_BINARY=y
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CONFIG_NSH_ARCHINIT=y
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CONFIG_NSH_BUILTIN_APPS=y
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CONFIG_NSH_FILEIOSIZE=512
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CONFIG_NSH_LINELEN=64
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@ -387,16 +387,20 @@ extern "C"
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#define LED_PANIC 1
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/* Buttons
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*
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* B1 USER:
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* the user button is connected to the I/O PC13 (pin 2) of the STM32
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* microcontroller.
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* The STM32F401RC-RS485 has 4 user buttons: SW3, SW4, SW5 and
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* SW6. They are connected to PB13, PB14, PB15 and PC6 respectively.
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*/
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#define BUTTON_USER 0
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#define NUM_BUTTONS 1
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#define BUTTON_SW3 0
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#define BUTTON_SW4 1
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#define BUTTON_SW5 2
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#define BUTTON_SW6 3
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#define NUM_BUTTONS 4
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#define BUTTON_USER_BIT (1 << BUTTON_USER)
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#define BUTTON_SW3_BIT (1 << BUTTON_SW3)
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#define BUTTON_SW4_BIT (1 << BUTTON_SW4)
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#define BUTTON_SW5_BIT (1 << BUTTON_SW5)
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#define BUTTON_SW6_BIT (1 << BUTTON_SW6)
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#define GPIO_TIM2_CH1IN (GPIO_TIM2_CH1IN_1 | GPIO_PULLUP)
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#define GPIO_TIM2_CH2IN (GPIO_TIM2_CH2IN_1 | GPIO_PULLUP)
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@ -32,6 +32,10 @@ if(CONFIG_BOARDCTL)
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list(APPEND SRCS stm32_appinit.c)
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endif()
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if(CONFIG_ARCH_BUTTONS)
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list(APPEND SRCS stm32_buttons.c)
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endif()
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target_sources(board PRIVATE ${SRCS})
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if(CONFIG_ARCH_CHIP_STM32F401RC)
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@ -35,6 +35,10 @@ ifeq ($(CONFIG_BOARDCTL),y)
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CSRCS += stm32_appinit.c
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endif
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ifeq ($(CONFIG_ARCH_BUTTONS),y)
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CSRCS += stm32_buttons.c
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endif
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DEPPATH += --dep-path board
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VPATH += :board
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CFLAGS += ${INCDIR_PREFIX}$(TOPDIR)$(DELIM)arch$(DELIM)$(CONFIG_ARCH)$(DELIM)src$(DELIM)board$(DELIM)board
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@ -39,6 +39,10 @@
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# include <nuttx/leds/userled.h>
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#endif
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#ifdef CONFIG_INPUT_BUTTONS
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# include <nuttx/input/buttons.h>
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#endif
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#include "stm32f401rc-rs485.h"
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#include <nuttx/board.h>
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@ -75,5 +79,15 @@ int stm32_bringup(void)
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}
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#endif
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#ifdef CONFIG_INPUT_BUTTONS
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/* Register the BUTTON driver */
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ret = btn_lower_initialize("/dev/buttons");
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if (ret < 0)
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{
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syslog(LOG_ERR, "ERROR: btn_lower_initialize() failed: %d\n", ret);
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}
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#endif
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return ret;
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}
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149
boards/arm/stm32/stm32f401rc-rs485/src/stm32_buttons.c
Normal file
149
boards/arm/stm32/stm32f401rc-rs485/src/stm32_buttons.c
Normal file
@ -0,0 +1,149 @@
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/****************************************************************************
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* boards/arm/stm32/stm32f401rc-rs485/src/stm32_buttons.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 <stdint.h>
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#include <errno.h>
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#include <nuttx/arch.h>
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#include <nuttx/board.h>
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#include <arch/board/board.h>
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#include "stm32.h"
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#include "stm32f401rc-rs485.h"
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#ifdef CONFIG_ARCH_BUTTONS
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/****************************************************************************
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* Private Data
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****************************************************************************/
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/* Pin configuration for each STM32F401RC RS485 button. This array is indexed
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* by the BUTTON_* definitions in board.h
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*/
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static const uint32_t g_buttons[NUM_BUTTONS] =
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{
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GPIO_BTN_SW3, GPIO_BTN_SW4, GPIO_BTN_SW5, GPIO_BTN_SW6
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};
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: board_button_initialize
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*
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* Description:
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* board_button_initialize() must be called to initialize button resources.
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* After that, board_buttons() may be called to collect the current state
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* of all buttons or board_button_irq() may be called to register button
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* interrupt handlers.
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*
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****************************************************************************/
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uint32_t board_button_initialize(void)
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{
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int i;
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/* Configure the GPIO pins as inputs. NOTE that EXTI interrupts are
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* configured for all pins.
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*/
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for (i = 0; i < NUM_BUTTONS; i++)
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{
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stm32_configgpio(g_buttons[i]);
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}
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return NUM_BUTTONS;
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}
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/****************************************************************************
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* Name: board_buttons
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****************************************************************************/
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uint32_t board_buttons(void)
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{
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uint32_t ret = 0;
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int i;
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/* Check that state of each key */
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for (i = 0; i < NUM_BUTTONS; i++)
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{
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/* A LOW value means that the key is pressed. */
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bool released = stm32_gpioread(g_buttons[i]);
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/* Accumulate the set of depressed (not released) keys */
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if (!released)
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{
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ret |= (1 << i);
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}
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}
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return ret;
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}
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/****************************************************************************
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* Button support.
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*
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* Description:
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* board_button_initialize() must be called to initialize button resources.
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* After that, board_buttons() may be called to collect the current state
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* of all buttons or board_button_irq() may be called to register button
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* interrupt handlers.
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*
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* After board_button_initialize() has been called, board_buttons() may be
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* called to collect the state of all buttons. board_buttons() returns an
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* 32-bit bit set with each bit associated with a button. See the
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* BUTTON_*_BIT definitions in board.h for the meaning of each bit.
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*
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* board_button_irq() may be called to register an interrupt handler that
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* will be called when a button is depressed or released. The ID value is a
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* button enumeration value that uniquely identifies a button resource. See
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* the BUTTON_* definitions in board.h for the meaning of enumeration
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* value.
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*
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****************************************************************************/
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#ifdef CONFIG_ARCH_IRQBUTTONS
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int board_button_irq(int id, xcpt_t irqhandler, void *arg)
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{
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int ret = -EINVAL;
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/* The following should be atomic */
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if (id >= MIN_IRQBUTTON && id <= MAX_IRQBUTTON)
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{
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ret = stm32_gpiosetevent(g_buttons[id], true, true, true,
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irqhandler, arg);
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}
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return ret;
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}
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#endif
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#endif /* CONFIG_ARCH_BUTTONS */
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@ -67,17 +67,25 @@
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GPIO_SPEED_50MHz)
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/* Buttons
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*
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* B1 USER: the user button is connected to the I/O PC13 (pin 2) of the STM32
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* microcontroller.
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* The STm32F401RC-RS485 has 4 user buttons.
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* - SW3 is connected to the GPIO PB13.
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* - SW4 is connected to the GPIO PB14.
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* - SW5 is connected to the GPIO PB15.
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* - SW6 is connected to the GPIO PC6.
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*/
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#define MIN_IRQBUTTON BUTTON_USER
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#define MAX_IRQBUTTON BUTTON_USER
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#define NUM_IRQBUTTONS 1
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#define MIN_IRQBUTTON BUTTON_SW3
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#define MAX_IRQBUTTON BUTTON_SW6
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#define NUM_IRQBUTTONS 4
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#define GPIO_BTN_USER \
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(GPIO_INPUT |GPIO_FLOAT |GPIO_EXTI | GPIO_PORTC | GPIO_PIN13)
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#define GPIO_BTN_SW3 \
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(GPIO_INPUT |GPIO_FLOAT |GPIO_EXTI | GPIO_PORTB | GPIO_PIN13)
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#define GPIO_BTN_SW4 \
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(GPIO_INPUT |GPIO_FLOAT |GPIO_EXTI | GPIO_PORTB | GPIO_PIN14)
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#define GPIO_BTN_SW5 \
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(GPIO_INPUT |GPIO_FLOAT |GPIO_EXTI | GPIO_PORTB | GPIO_PIN15)
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#define GPIO_BTN_SW6 \
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(GPIO_INPUT |GPIO_FLOAT |GPIO_EXTI | GPIO_PORTC | GPIO_PIN6)
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/* The shield uses the following pins:
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*
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