首先调用timerBegin函数初始化一个定时器对象并采用向上计数方式，然后调用timerAlarmWrite函数配置中断时间并...
1.timerBegin(TIMERx,Pre,True) timerBegin函数以对定时器进行初始化,这个函数会返回一个指向hw_timer_t结构类型的指针,timer就是上面第一步声明的空指针,给他初始化timerBegin(TIMERx,Pre,True) TIMERx表示使用那个定时器,ESP32一共有4个定时器,定时器0,定时器1,定时器2,定时器3 特别注意是从定时器0开始没...
登录后复制hw_timer_t*timerBegin(uint8_ttimer,uint16_tdivider,boolcountUp); 设置定时器中断回调函数 第一个参数为使用哪个定时器;第二个参数为定时器超时,中断的回调函数;第三个参数,如果为true,则报警产生边缘类型中断。 登录后复制voidtimerAttachInterrupt(hw_timer_t*timer,void(*fn)(void),booledge); ...
** ledc: 7 => Group: 0, Channel: 7, Timer: 3 ** ledc: 8 => Group: 1, Channel: 0, Timer: 0 ** ledc: 9 => Group: 1, Channel: 1, Timer: 0 ** ledc: 10 => Group: 1, Channel: 2, Timer: 1 ** ledc: 11 => Group: 1, Channel: 3, Timer: 1 ** ledc: 12 => Gr...
timerAlarm(hw_timer[timer_no], alarm_value, timer_reload, 0); 2. the removed API: Code: Select all hw_timer[timer_no] = timerBegin(timer_no, (uint16_t)(getApbFrequency() / TIME_BASE), cnt_up); replaces with new API : Code: Select all hw_timer[timer_no] = timerBegin((...
Serial.begin(115200);/*定时器部分*/timer= timerBegin(0,80,true);//定时器初始化--80Mhz分频80,则时间单位为1Mhz即1us即10-6s,下面的300000us即300ms。timerAttachInterrupt(timer, &InterruptEvent,true);//中断绑定定时器timerAlarmWrite(timer,300000,true);//300ms进入一次中断--注意这里不能用另一...
timer = timerBegin(0, 80, true); For this example we will use the first timer and will passtrueto the last parameter, so the counter counts up the frequency of the base signal used by the ESP32 counters is80 MHz.if we divide this value by 80 (using 80 as the prescaler value), ...
打开您的Arduino IDE，然后导航到File > Examples > ESP32 > Deep Sleep，然后打开TimerWakeup草图。
Serial.begin(115200);delay(2000);// 给于一定的时间用于开启 Serial 控制台,在深度睡眠的时候是无法连接 esp32 的esp_sleep_enable_timer_wakeup(TIME_TO_SLEEP * uS_TO_S_FACTOR); Serial.println("Going to sleep now");esp_deep_sleep_start(); ...
ESP32 Timer as a wake-up resource from a deep sleep, put ESP32 into deep sleep mode and wake it up using a predefined time