hw_timer_t * timerBegin(uint8_t num, uint16_t divider, bool countUp);复制代码 参数num为定时...
(1)timerBegin 初始化(开启)定时器 hw_timer_t * IRAM_ATTR timerBegin(uint8_t num, uint16_t divider, bool countUp) num : 定时器编号(0到3,对应全部4个硬件定时器) divider: 预分频器数值(ESP32计数器基频为80M,80分频单位是微秒) countUp: 计数器向上(true)或向下(false)计数的标志 返回值:返回...
hw_timer_t * timerBegin(uint8_t timer, uint16_t divider, bool countUp); 其三个参数是: 定时器x (一共4个,0-3) 分频数(基础时钟80MHZ,分频最大值为65536) 第三个是向上或向下计数标志 //然后我们用刚才定义的指针接收以下: timer = timerBegin(0,80,true); 1. 2. 3. 4. 5. 6. 7. ...
TIMSK0 = 0x00; OCR0A = 248; // 最大计数值 = CTC 除以 250 = 1mS GTCCR = 0x02;// 重置预分频器 FC_overflowCount = 0; 位集(TIMSK0,OCIE0A);// 启用 Timer0 中断 中断(); } //=== === // FC_InitAC // ACfreqAdcPin = 0..5 - 使用该 ADC 多路复用器并使用 Timer1 测量周...
countUp指定定时器是否为向上计数模式。设置为ture为向上计数,false为向下计数。 2.1.2 关联中断处理函数 void timerAttachInterrupt(hw_timer_t *timer, void (*fn)(void), bool edge) 1. timer指向已初始化的定时器指针。 fn中断服务函数。 edge中断类型,true边沿触发,false电平触发。
static sc_timer_t timers[MAX_TIMERS]; //! callback implementation for the setting up time events void lightCtrl_setTimer(LightCtrl* handle, const sc_eventid evid, const sc_integer time_ms, const sc_boolean periodic){ sc_timer_start(&timer_service, (void*) handle, evid, time_ms, period...
What is a timer? A timer, A.K.A. counter is a piece of hardware built in the Arduino controller. It is like a clock, and can be used to measure time events. The timer can be programmed by some special registers. You can configure the pre-scaler for the timer, or the mode of op...
GitHub开源可下载 #include <Encoder.h> //https://github.com/micromouseonline/BasicEncoder // i2C OLED #define I2C_ADDRESS 0x3C #define RST_PIN -1 SSD1306AsciiWire oled; float OLEDTimer = 0; //屏幕刷新时间 int rhythm = 2; // 2/4拍 3/4 4/4 // Change these two numbers to the ...
You must use // 38400 or slower in these cases, or use some kind of external separate // crystal solution for the UART timer. // initialize device Serial.println(F("Initializing I2C devices...")); mpu.initialize(); pinMode(INTERRUPT_PIN, INPUT); // verify connection Serial.println(F(...
MsTimer2::start(); //开始计时CarStop();IOInit();}void loop(){sys_status = 1; //系统启动if(sys_status == 1){SearchRun();}else{ctrl_comm = COMM_STOP;}//do somethingif(ctrl_comm_last != ctrl_comm)//指令有变化{ctrl_comm_last = ctrl_comm;switch(ctrl_comm){case COMM_UP: ...