mirror of
https://github.com/apache/nuttx.git
synced 2026-05-20 04:16:35 +08:00
boards/arm/nrf52/nrf52840-dk: add GPIO driver based on leds and buttons
With this change we can use on board leds and buttons with gpio driver Signed-off-by: raiden00pl <raiden00@railab.me>
This commit is contained in:
raiden00pl
Xiang Xiao
@@ -9,4 +9,11 @@ config NRF52840DK_HIGHPRI
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bool "High priority interrupt test"
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default n
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config NRF52840DK_BTNLEDS_GPIO
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bool "Export board LEDS and BUTTONS as GPIO"
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default n
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depends on !ARCH_LEDS && !ARCH_BUTTONS && GPIO_LOWER_HALF && DEV_GPIO
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---help---
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Export board LEDS and buttons as GPIOs.
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endif
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@@ -36,6 +36,10 @@ if(CONFIG_ARCH_BUTTONS)
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list(APPEND SRCS nrf52_buttons.c)
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endif()
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if(CONFIG_NRF52840DK_BTNLEDS_GPIO)
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list(APPEND SRCS nrf52_gpio.c)
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endif()
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if(CONFIG_NRF52_SPI_MASTER)
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list(APPEND SRCS nrf52_spi.c)
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endif()
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@@ -38,6 +38,10 @@ ifeq ($(CONFIG_ARCH_BUTTONS),y)
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CSRCS += nrf52_buttons.c
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endif
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ifeq ($(CONFIG_NRF52840DK_BTNLEDS_GPIO),y)
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CSRCS += nrf52_gpio.c
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endif
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ifeq ($(CONFIG_NRF52_SPI_MASTER),y)
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CSRCS += nrf52_spi.c
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endif
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@@ -203,5 +203,17 @@ int nrf52_adc_setup(void);
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int nrf52_mx25_initialize(void);
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#endif
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/****************************************************************************
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* Name: nrf52_gpioleds_initialize
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*
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* Description:
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* Initialize GPIO devices with board LEDS and buttons.
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*
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****************************************************************************/
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#ifdef CONFIG_NRF52840DK_BTNLEDS_GPIO
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int nrf52_gpioleds_initialize(void);
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#endif
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#endif /* __ASSEMBLY__ */
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#endif /* __BOARDS_ARM_NRF52_NRF52840_DK_SRC_NRF52840_DK_H */
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@@ -173,6 +173,15 @@ int nrf52_bringup(void)
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}
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#endif
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#ifdef CONFIG_NRF52840DK_BTNLEDS_GPIO
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ret = nrf52_gpioleds_initialize();
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if (ret < 0)
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{
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syslog(LOG_ERR,
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"ERROR: nrf52_gpioleds_initialize() failed: %d\n", ret);
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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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@@ -0,0 +1,191 @@
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/****************************************************************************
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* boards/arm/nrf52/nrf52840-dk/src/nrf52_gpio.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 <stdbool.h>
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#include <debug.h>
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#include <nuttx/ioexpander/gpio.h>
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#include <arch/board/board.h>
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#include "chip.h"
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#include "arm_internal.h"
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#include "nrf52840-dk.h"
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/****************************************************************************
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* Private Types
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****************************************************************************/
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struct nrf52gpio_dev_s
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{
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struct gpio_dev_s gpio;
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uint8_t id;
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};
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/****************************************************************************
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* Private Function Prototypes
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****************************************************************************/
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static int gpin_read(struct gpio_dev_s *dev, bool *value);
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static int gpout_read(struct gpio_dev_s *dev, bool *value);
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static int gpout_write(struct gpio_dev_s *dev, bool value);
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/****************************************************************************
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* Private Data
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****************************************************************************/
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static const struct gpio_operations_s gpin_ops =
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{
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.go_read = gpin_read,
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.go_write = NULL,
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.go_attach = NULL,
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.go_enable = NULL,
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};
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static const struct gpio_operations_s gpout_ops =
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{
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.go_read = gpout_read,
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.go_write = gpout_write,
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.go_attach = NULL,
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.go_enable = NULL,
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};
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/* Buttons as inputs */
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static const uint32_t g_gpioinputs[NUM_BUTTONS] =
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{
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GPIO_BUTTON1,
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GPIO_BUTTON2,
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GPIO_BUTTON3,
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GPIO_BUTTON4
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};
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static struct nrf52gpio_dev_s g_gpin[NUM_BUTTONS];
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/* Leds as outputs */
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static const uint32_t g_gpiooutputs[BOARD_NLEDS] =
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{
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#if 0 < BOARD_NLEDS
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GPIO_LED1,
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#endif
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#if 1 < BOARD_NLEDS
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GPIO_LED2,
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#endif
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#if 2 < BOARD_NLEDS
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GPIO_LED3,
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#endif
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#if 3 < BOARD_NLEDS
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GPIO_LED4,
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#endif
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};
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static struct nrf52gpio_dev_s g_gpout[BOARD_NLEDS];
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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static int gpin_read(struct gpio_dev_s *dev, bool *value)
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{
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struct nrf52gpio_dev_s *io = (struct nrf52gpio_dev_s *)dev;
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*value = nrf52_gpio_read(g_gpioinputs[io->id]);
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return OK;
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}
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static int gpout_read(struct gpio_dev_s *dev, bool *value)
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{
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struct nrf52gpio_dev_s *io = (struct nrf52gpio_dev_s *)dev;
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*value = nrf52_gpio_read(g_gpiooutputs[io->id]);
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return OK;
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}
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static int gpout_write(struct gpio_dev_s *dev, bool value)
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{
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struct nrf52gpio_dev_s *io = (struct nrf52gpio_dev_s *)dev;
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nrf52_gpio_write(g_gpiooutputs[io->id], value);
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return OK;
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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: nrf52_gpioleds_initialize
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*
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* Description:
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* Initialize GPIO devices with board LEDS and buttons.
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*
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****************************************************************************/
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int nrf52_gpioleds_initialize(void)
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{
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int i;
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int pincount = 0;
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/* Inputs */
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for (i = 0; i < NUM_BUTTONS; i++)
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{
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/* Setup and register the GPIO pin */
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g_gpin[i].gpio.gp_pintype = GPIO_INPUT_PIN;
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g_gpin[i].gpio.gp_ops = &gpin_ops;
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g_gpin[i].id = i;
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gpio_pin_register(&g_gpin[i].gpio, pincount);
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/* Configure the pin that will be used as input */
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nrf52_gpio_config(g_gpioinputs[i]);
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pincount++;
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}
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/* Outputs */
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for (i = 0; i < BOARD_NLEDS; i++)
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{
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/* Setup and register the GPIO pin */
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g_gpout[i].gpio.gp_pintype = GPIO_OUTPUT_PIN;
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g_gpout[i].gpio.gp_ops = &gpout_ops;
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g_gpout[i].id = i;
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gpio_pin_register(&g_gpout[i].gpio, pincount);
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/* Configure the pin that will be used as input */
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nrf52_gpio_config(g_gpiooutputs[i]);
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pincount++;
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}
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return OK;
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}
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@@ -36,7 +36,7 @@
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#include "arm_internal.h"
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#include "nrf52840-dk.h"
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#ifndef CONFIG_ARCH_LEDS
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#if !defined(CONFIG_ARCH_LEDS) && !defined(CONFIG_NRF52840DK_LEDS_GPIO)
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/****************************************************************************
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* Pre-processor Definitions
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@@ -147,4 +147,4 @@ void board_userled_all(uint32_t ledset)
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}
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}
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#endif /* !CONFIG_ARCH_LEDS */
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#endif /* !defined(CONFIG_ARCH_LEDS) && !defined(CONFIG_NRF52840DK_LEDS_GPIO) */
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