8266 RTOS 红外遥控代码

以下是ESP8266_RTOS_SDK-2.0.0中红外遥控器demo的代码，可以参考：

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "driver/gpio.h"
#include "driver/rmt.h"
#include "soc/rmt_reg.h"

#define RMT_TX_CHANNEL RMT_CHANNEL_0
#define RMT_TX_GPIO_NUM 14

#define NEC_HEADER_HIGH_US  9000
#define NEC_HEADER_LOW_US   4500
#define NEC_BIT_HIGH_US     560
#define NEC_ONE_LOW_US      1690
#define NEC_ZERO_LOW_US     560

#define NEC_REPEAT_PERIOD_US 110000

#define RMT_CLK_DIV      100

#define RMT_TICK_10_US   (80000000/RMT_CLK_DIV/100000)

#define RMT_TX_DATA_NUM  16

#define RMT_TX_CARRIER_EN    1
#define RMT_TX_CARRIER_FREQ  38000
#define RMT_TX_CARRIER_DUTY  33

static const uint16_t nec_tx_data[RMT_TX_DATA_NUM * 2] = {
    NEC_HEADER_HIGH_US/RMT_TICK_10_US, 1,
    NEC_HEADER_LOW_US/RMT_TICK_10_US, 0,
    NEC_BIT_HIGH_US/RMT_TICK_10_US, 1,
    NEC_ZERO_LOW_US/RMT_TICK_10_US, 0,
    NEC_BIT_HIGH_US/RMT_TICK_10_US, 1,
    NEC_ZERO_LOW_US/RMT_TICK_10_US, 0,
    NEC_BIT_HIGH_US/RMT_TICK_10_US, 1,
    NEC_ONE_LOW_US/RMT_TICK_10_US, 0,
    NEC_BIT_HIGH_US/RMT_TICK_10_US, 1,
    NEC_ZERO_LOW_US/RMT_TICK_10_US, 0,
    NEC_BIT_HIGH_US/RMT_TICK_10_US, 1,
    NEC_ONE_LOW_US/RMT_TICK_10_US, 0,
    NEC_BIT_HIGH_US/RMT_TICK_10_US, 1,
    NEC_ZERO_LOW_US/RMT_TICK_10_US, 0,
    NEC_BIT_HIGH_US/RMT_TICK_10_US, 1,
    NEC_ONE_LOW_US/RMT_TICK_10_US, 0
};

void rmt_tx_init()
{
    rmt_config_t rmt_tx;
    rmt_tx.channel = RMT_TX_CHANNEL;
    rmt_tx.gpio_num = RMT_TX_GPIO_NUM;
    rmt_tx.mem_block_num = 1;
    rmt_tx.clk_div = RMT_CLK_DIV;
    rmt_tx.tx_config.loop_en = 0;
    rmt_tx.tx_config.carrier_en = RMT_TX_CARRIER_EN;
    rmt_tx.tx_config.idle_output_en = 1;
    rmt_tx.tx_config.idle_level = 0;
    rmt_tx.tx_config.carrier_freq_hz = RMT_TX_CARRIER_FREQ;
    rmt_tx.tx_config.carrier_duty_percent = RMT_TX_CARRIER_DUTY;
    rmt_tx.tx_config.carrier_level = 1;
    rmt_tx.rmt_mode = 0;
    rmt_config(&rmt_tx);
    rmt_driver_install(rmt_tx.channel, 0, 0);
}

void nec_tx_task(void *arg)
{
    while (1) {
        rmt_write_items(RMT_TX_CHANNEL, nec_tx_data, RMT_TX_DATA_NUM * 2, true);
        vTaskDelay(NEC_REPEAT_PERIOD_US / portTICK_PERIOD_MS);
    }
}

void app_main()
{
    rmt_tx_init();
    xTaskCreate(nec_tx_task, "nec_tx_task", 2048, NULL, 10, NULL);
}