esp8266学习

https://blog.csdn.net/lsalp/article/details/80592533
https://blog.csdn.net/lalala098/article/details/81240806

控制小灯https://blog.csdn.net/XiaoCaiDaYong/article/details/82289276
https://blog.csdn.net/xh870189248/article/details/84580239

1.中断 （这个非常重要）

#include "ets_sys.h"
#include "osapi.h"

#include "user_interface.h"
//#include "gpio.h"
 uint16 flag;
/******************************************************************************
 * FunctionName : user_rf_cal_sector_set
 * Description  : SDK just reversed 4 sectors, used for rf init data and paramters.
 *                We add this function to force users to set rf cal sector, since
 *                we don't know which sector is free in user's application.
 *                sector map for last several sectors : ABCCC
 *                A : rf cal
 *                B : rf init data
 *                C : sdk parameters
 * Parameters   : none
 * Returns      : rf cal sector
*******************************************************************************/
uint32 ICACHE_FLASH_ATTR
user_rf_cal_sector_set(void)
{
    enum flash_size_map size_map = system_get_flash_size_map();
    uint32 rf_cal_sec = 0;

    switch (size_map) {
        case FLASH_SIZE_4M_MAP_256_256:
            rf_cal_sec = 128 - 5;

            break;

        case FLASH_SIZE_8M_MAP_512_512:
            rf_cal_sec = 256 - 5;

            break;

        case FLASH_SIZE_16M_MAP_512_512:
            rf_cal_sec = 512 - 5;

            break;
        case FLASH_SIZE_16M_MAP_1024_1024:
            rf_cal_sec = 512 - 5;

            break;

        case FLASH_SIZE_32M_MAP_512_512:
            rf_cal_sec = 1024 - 5;

            break;
        case FLASH_SIZE_32M_MAP_1024_1024:
            rf_cal_sec = 1024 - 5;

            break;

        case FLASH_SIZE_64M_MAP_1024_1024:
            rf_cal_sec = 2048 - 5;

            break;
        case FLASH_SIZE_128M_MAP_1024_1024:
            rf_cal_sec = 4096 - 5;

            break;
        default:
            rf_cal_sec = 0;

            break;
    }

    return rf_cal_sec;
}



void ICACHE_FLASH_ATTR
user_rf_pre_init(void)
{
}

/******************************************************************************
 * FunctionName : user_init
 * Description  : entry of user application, init user function here
 * Parameters   : none
 * Returns      : none
*******************************************************************************/
void GPIO_INTERRUPTED(void)//这个函数前不能有 ICACHE_FLASH_ATTR
{
    uint32  gpio_status;
    uint16 gpio_4;
    gpio_status =   GPIO_REG_READ(GPIO_STATUS_ADDRESS);//从寄存器中读出状态
    //clear interrupt   status
    GPIO_REG_WRITE(GPIO_STATUS_W1TC_ADDRESS,    gpio_status);//清除中断标志位
    gpio_4=gpio_status&(0x01<<4);//gpio_n=gpio_status&(0x01<

2.软件定时

void ICACHE_FLASH_ATTR soft_delay_func(void)
{
      flag = !flag;
      GPIO_OUTPUT_SET(GPIO_ID_PIN(4),flag);
}
void ICACHE_FLASH_ATTR soft_delay(uint16 time,uint8 repeat)
{
    os_timer_disarm (&ptimer);        //关闭软件定时器
    os_timer_setfn(&ptimer,(os_timer_func_t *)soft_delay_func,NULL);//设置软件定时器，回调函数，参数
    os_timer_arm    (&ptimer,time,repeat); //使能软件定时器，repeat = 1 重复  =0 不重复
}
void ICACHE_FLASH_ATTR
user_init(void)
{

    PIN_FUNC_SELECT(PERIPHS_IO_MUX_GPIO4_U, FUNC_GPIO4) ;
    soft_delay(1000,1);
}

3.硬件定时器

void  hardwoft_delay_func(void)  //硬件定时器回调函数  不能带ICACHE_FLASH_ATTR宏
{
      flag = !flag;
      GPIO_OUTPUT_SET(GPIO_ID_PIN(4),flag);
}
void ICACHE_FLASH_ATTR
user_init(void)
{
    hw_timer_init(0,1);  //初始化  设置定时器类型  并设置是否重复
    hw_timer_set_func(hardwoft_delay_func);  //设置回调函数
    hw_timer_arm(500000);  //使能硬件定时器，并设置时间  单位us
}