mirror of
https://github.com/espressif/ESP8266_RTOS_SDK.git
synced 2025-11-04 14:37:01 +08:00
126 lines
3.5 KiB
C
126 lines
3.5 KiB
C
/* gpio example
|
|
|
|
This example code is in the Public Domain (or CC0 licensed, at your option.)
|
|
|
|
Unless required by applicable law or agreed to in writing, this
|
|
software is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
|
|
CONDITIONS OF ANY KIND, either express or implied.
|
|
*/
|
|
|
|
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <stdlib.h>
|
|
|
|
#include "freertos/FreeRTOS.h"
|
|
#include "freertos/task.h"
|
|
#include "freertos/queue.h"
|
|
|
|
#include "driver/gpio.h"
|
|
|
|
#include "esp_log.h"
|
|
#include "esp_system.h"
|
|
|
|
static const char *TAG = "main";
|
|
|
|
/**
|
|
* Brief:
|
|
* This test code shows how to configure gpio and how to use gpio interrupt.
|
|
*
|
|
* GPIO status:
|
|
* GPIO15: output
|
|
* GPIO16: output
|
|
* GPIO4: input, pulled up, interrupt from rising edge and falling edge
|
|
* GPIO5: input, pulled up, interrupt from rising edge.
|
|
*
|
|
* Test:
|
|
* Connect GPIO15 with GPIO4
|
|
* Connect GPIO16 with GPIO5
|
|
* Generate pulses on GPIO15/16, that triggers interrupt on GPIO4/5
|
|
*
|
|
*/
|
|
|
|
#define GPIO_OUTPUT_IO_0 15
|
|
#define GPIO_OUTPUT_IO_1 16
|
|
#define GPIO_OUTPUT_PIN_SEL ((1ULL<<GPIO_OUTPUT_IO_0) | (1ULL<<GPIO_OUTPUT_IO_1))
|
|
#define GPIO_INPUT_IO_0 4
|
|
#define GPIO_INPUT_IO_1 5
|
|
#define GPIO_INPUT_PIN_SEL ((1ULL<<GPIO_INPUT_IO_0) | (1ULL<<GPIO_INPUT_IO_1))
|
|
|
|
static xQueueHandle gpio_evt_queue = NULL;
|
|
|
|
static void gpio_isr_handler(void *arg)
|
|
{
|
|
uint32_t gpio_num = (uint32_t) arg;
|
|
xQueueSendFromISR(gpio_evt_queue, &gpio_num, NULL);
|
|
}
|
|
|
|
static void gpio_task_example(void *arg)
|
|
{
|
|
uint32_t io_num;
|
|
|
|
for (;;) {
|
|
if (xQueueReceive(gpio_evt_queue, &io_num, portMAX_DELAY)) {
|
|
ESP_LOGI(TAG, "GPIO[%d] intr, val: %d\n", io_num, gpio_get_level(io_num));
|
|
}
|
|
}
|
|
}
|
|
|
|
void app_main(void)
|
|
{
|
|
gpio_config_t io_conf;
|
|
//disable interrupt
|
|
io_conf.intr_type = GPIO_INTR_DISABLE;
|
|
//set as output mode
|
|
io_conf.mode = GPIO_MODE_OUTPUT;
|
|
//bit mask of the pins that you want to set,e.g.GPIO15/16
|
|
io_conf.pin_bit_mask = GPIO_OUTPUT_PIN_SEL;
|
|
//disable pull-down mode
|
|
io_conf.pull_down_en = 0;
|
|
//disable pull-up mode
|
|
io_conf.pull_up_en = 0;
|
|
//configure GPIO with the given settings
|
|
gpio_config(&io_conf);
|
|
|
|
//interrupt of rising edge
|
|
io_conf.intr_type = GPIO_INTR_POSEDGE;
|
|
//bit mask of the pins, use GPIO4/5 here
|
|
io_conf.pin_bit_mask = GPIO_INPUT_PIN_SEL;
|
|
//set as input mode
|
|
io_conf.mode = GPIO_MODE_INPUT;
|
|
//enable pull-up mode
|
|
io_conf.pull_up_en = 1;
|
|
gpio_config(&io_conf);
|
|
|
|
//change gpio intrrupt type for one pin
|
|
gpio_set_intr_type(GPIO_INPUT_IO_0, GPIO_INTR_ANYEDGE);
|
|
|
|
//create a queue to handle gpio event from isr
|
|
gpio_evt_queue = xQueueCreate(10, sizeof(uint32_t));
|
|
//start gpio task
|
|
xTaskCreate(gpio_task_example, "gpio_task_example", 2048, NULL, 10, NULL);
|
|
|
|
//install gpio isr service
|
|
gpio_install_isr_service(0);
|
|
//hook isr handler for specific gpio pin
|
|
gpio_isr_handler_add(GPIO_INPUT_IO_0, gpio_isr_handler, (void *) GPIO_INPUT_IO_0);
|
|
//hook isr handler for specific gpio pin
|
|
gpio_isr_handler_add(GPIO_INPUT_IO_1, gpio_isr_handler, (void *) GPIO_INPUT_IO_1);
|
|
|
|
//remove isr handler for gpio number.
|
|
gpio_isr_handler_remove(GPIO_INPUT_IO_0);
|
|
//hook isr handler for specific gpio pin again
|
|
gpio_isr_handler_add(GPIO_INPUT_IO_0, gpio_isr_handler, (void *) GPIO_INPUT_IO_0);
|
|
|
|
int cnt = 0;
|
|
|
|
while (1) {
|
|
ESP_LOGI(TAG, "cnt: %d\n", cnt++);
|
|
vTaskDelay(1000 / portTICK_RATE_MS);
|
|
gpio_set_level(GPIO_OUTPUT_IO_0, cnt % 2);
|
|
gpio_set_level(GPIO_OUTPUT_IO_1, cnt % 2);
|
|
}
|
|
}
|
|
|
|
|