mirror of
https://github.com/espressif/ESP8266_RTOS_SDK.git
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refactor(gpio): Refactor gpio driver for esp8266 idf
This commit is contained in:
Xu Chun Guang
9
examples/peripherals/gpio/Makefile
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9
examples/peripherals/gpio/Makefile
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#
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# This is a project Makefile. It is assumed the directory this Makefile resides in is a
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# project subdirectory.
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#
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PROJECT_NAME := gpio
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include $(IDF_PATH)/make/project.mk
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80
examples/peripherals/gpio/README.md
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examples/peripherals/gpio/README.md
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# _GPIO Example_
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_This test code shows how to configure gpio and how to use gpio interrupt._
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## GPIO functions
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* GPIO15: output
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* GPIO16: output
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* GPIO4: input, pulled up, interrupt from rising edge and falling edge
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* GPIO5: input, pulled up, interrupt from rising edge.
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## How to use example
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### Hardware Required
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* Connect GPIO15 with GPIO4
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* Connect GPIO16 with GPIO5
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### Configure the project
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```
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make menuconfig
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```
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* Set serial port under Serial Flasher Options.
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### Build and Flash
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Build the project and flash it to the board, then run monitor tool to view serial output:
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```
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make -j4 flash monitor
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```
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(To exit the serial monitor, type ``Ctrl-]``.)
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See the Getting Started Guide for full steps to configure and use ESP-IDF to build projects.
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## Example Output
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* Generate pulses on GPIO15/16, that triggers interrupt on GPIO4/5
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```
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I (0) gpio: GPIO[15]| InputEn: 0| OutputEn: 1| OpenDrain: 0| Pullup: 0| Pulldown: 0| Intr:0
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I (0) gpio: GPIO[16]| InputEn: 0| OutputEn: 1| OpenDrain: 0| Pullup: 0| Pulldown: 0| Intr:0
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I (0) gpio: GPIO[4]| InputEn: 1| OutputEn: 0| OpenDrain: 0| Pullup: 1| Pulldown: 0| Intr:1
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I (0) gpio: GPIO[5]| InputEn: 1| OutputEn: 0| OpenDrain: 0| Pullup: 1| Pulldown: 0| Intr:1
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I (0) main: cnt: 0
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I (1) main: cnt: 1
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I (1) main: GPIO[4] intr, val: 1
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I (1) main: GPIO[5] intr, val: 1
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I (2) main: cnt: 2
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I (2) main: GPIO[4] intr, val: 0
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I (3) main: cnt: 3
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I (3) main: GPIO[4] intr, val: 1
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I (3) main: GPIO[5] intr, val: 1
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I (4) main: cnt: 4
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I (4) main: GPIO[4] intr, val: 0
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I (5) main: cnt: 5
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I (5) main: GPIO[4] intr, val: 1
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I (5) main: GPIO[5] intr, val: 1
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I (6) main: cnt: 6
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I (6) main: GPIO[4] intr, val: 0
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```
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3
examples/peripherals/gpio/main/component.mk
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3
examples/peripherals/gpio/main/component.mk
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#
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# Main Makefile. This is basically the same as a component makefile.
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#
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129
examples/peripherals/gpio/main/user_main.c
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129
examples/peripherals/gpio/main/user_main.c
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// Copyright 2018-2025 Espressif Systems (Shanghai) PTE LTD
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// 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,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include "freertos/FreeRTOS.h"
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#include "freertos/task.h"
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#include "freertos/queue.h"
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#include "driver/gpio.h"
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#include "esp_log.h"
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#include "esp_system.h"
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static const char *TAG = "main";
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/**
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* Brief:
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* This test code shows how to configure gpio and how to use gpio interrupt.
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*
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* GPIO status:
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* GPIO15: output
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* GPIO16: output
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* GPIO4: input, pulled up, interrupt from rising edge and falling edge
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* GPIO5: input, pulled up, interrupt from rising edge.
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*
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* Test:
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* Connect GPIO15 with GPIO4
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* Connect GPIO16 with GPIO5
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* Generate pulses on GPIO15/16, that triggers interrupt on GPIO4/5
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*
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*/
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#define GPIO_OUTPUT_IO_0 15
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#define GPIO_OUTPUT_IO_1 16
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#define GPIO_OUTPUT_PIN_SEL ((1ULL<<GPIO_OUTPUT_IO_0) | (1ULL<<GPIO_OUTPUT_IO_1))
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#define GPIO_INPUT_IO_0 4
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#define GPIO_INPUT_IO_1 5
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#define GPIO_INPUT_PIN_SEL ((1ULL<<GPIO_INPUT_IO_0) | (1ULL<<GPIO_INPUT_IO_1))
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static xQueueHandle gpio_evt_queue = NULL;
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static void gpio_isr_handler(void *arg)
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{
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uint32_t gpio_num = (uint32_t) arg;
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xQueueSendFromISR(gpio_evt_queue, &gpio_num, NULL);
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}
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static void gpio_task_example(void *arg)
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{
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uint32_t io_num;
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for (;;) {
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if (xQueueReceive(gpio_evt_queue, &io_num, portMAX_DELAY)) {
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ESP_LOGI(TAG, "GPIO[%d] intr, val: %d\n", io_num, gpio_get_level(io_num));
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}
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}
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}
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void app_main(void)
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{
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gpio_config_t io_conf;
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//disable interrupt
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io_conf.intr_type = GPIO_INTR_DISABLE;
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//set as output mode
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io_conf.mode = GPIO_MODE_OUTPUT;
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//bit mask of the pins that you want to set,e.g.GPIO18/19
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io_conf.pin_bit_mask = GPIO_OUTPUT_PIN_SEL;
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//disable pull-down mode
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io_conf.pull_down_en = 0;
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//disable pull-up mode
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io_conf.pull_up_en = 0;
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//configure GPIO with the given settings
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gpio_config(&io_conf);
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//interrupt of rising edge
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io_conf.intr_type = GPIO_INTR_POSEDGE;
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//bit mask of the pins, use GPIO4/5 here
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io_conf.pin_bit_mask = GPIO_INPUT_PIN_SEL;
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//set as input mode
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io_conf.mode = GPIO_MODE_INPUT;
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//enable pull-up mode
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io_conf.pull_up_en = 1;
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gpio_config(&io_conf);
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//change gpio intrrupt type for one pin
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gpio_set_intr_type(GPIO_INPUT_IO_0, GPIO_INTR_ANYEDGE);
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//create a queue to handle gpio event from isr
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gpio_evt_queue = xQueueCreate(10, sizeof(uint32_t));
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//start gpio task
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xTaskCreate(gpio_task_example, "gpio_task_example", 2048, NULL, 10, NULL);
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//install gpio isr service
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gpio_install_isr_service(0);
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//hook isr handler for specific gpio pin
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gpio_isr_handler_add(GPIO_INPUT_IO_0, gpio_isr_handler, (void *) GPIO_INPUT_IO_0);
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//hook isr handler for specific gpio pin
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gpio_isr_handler_add(GPIO_INPUT_IO_1, gpio_isr_handler, (void *) GPIO_INPUT_IO_1);
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//remove isr handler for gpio number.
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gpio_isr_handler_remove(GPIO_INPUT_IO_0);
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//hook isr handler for specific gpio pin again
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gpio_isr_handler_add(GPIO_INPUT_IO_0, gpio_isr_handler, (void *) GPIO_INPUT_IO_0);
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int cnt = 0;
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while (1) {
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ESP_LOGI(TAG, "cnt: %d\n", cnt++);
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vTaskDelay(1000 / portTICK_RATE_MS);
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gpio_set_level(GPIO_OUTPUT_IO_0, cnt % 2);
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gpio_set_level(GPIO_OUTPUT_IO_1, cnt % 2);
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}
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}
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