ESP8266 RTOS CHQ1838接收遙控數據命令源程序

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ID:645730 發表于 2021-8-20 17:35 | 只看該作者 |只看大圖回帖獎勵

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CHQ1838引腳示意圖

源程序如下:

#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";
#define GPIO_INPUT_IO_2 2 // D4
#define GPIO_INPUT_PIN_SEL (1ULL<<GPIO_INPUT_IO_2)
static xQueueHandle gpio_evt_queue = NULL;
extern uint32_t esp_get_time(void); // 獲取當前啟動毫秒數
static void gpio_task_example(void *arg)
{
uint32_t interval_us,ms;
for (;;) {
if (xQueueReceive(gpio_evt_queue, &interval_us, portMAX_DELAY)) {
// ESP_LOGI(TAG, "GPIO failling edge interval time: %d\n", interval_us);
// printf("data is: ");
ms = interval_us / 100;
if (ms <= 150 && ms >= 120 ) // 在 12 - 15 ms之間認為是前導碼
{
printf("\n start ");
}
else if (ms < 20 && ms >= 10) // 在 1 - 2 ms之間認為是0
{
printf("0 ");
}
else if (ms <= 30 && ms >= 20) // 在2 - 3 ms之間認為是1
{
printf("1 ");
}
}
}
}
uint32_t first_time = 0, second_time = 0,interval_time = 0;
static void monitor_chq1838_break(void *arg){
first_time = second_time;
second_time = esp_get_time();
interval_time = second_time - first_time;
xQueueSendFromISR(gpio_evt_queue, &interval_time, NULL);
}
void app_main(void)
{
gpio_config_t io_conf;
io_conf.intr_type = GPIO_INTR_NEGEDGE;
io_conf.mode = GPIO_MODE_INPUT;
io_conf.pin_bit_mask = GPIO_INPUT_PIN_SEL;
io_conf.pull_down_en = 0;
io_conf.pull_up_en = 1;
gpio_config(&io_conf);
gpio_evt_queue = xQueueCreate(100, sizeof(uint32_t));
xTaskCreate(gpio_task_example, "gpio_task_example", 2048, NULL, 10, NULL);
gpio_install_isr_service(0);
gpio_isr_handler_add(GPIO_INPUT_IO_2, monitor_chq1838_break, (void *) GPIO_INPUT_IO_2);
while (1) {
vTaskDelay(1000 / portTICK_RATE_MS);
}
}