{//We need to make sure the PWM output is enabled for those pins//that support it, as we turn it off when digitally reading or//writing with them. Also, make sure the pin is in output mode//for consistenty with Wiring, which doesn't require a pinMode//call for the analog output ...
defined(__AVR_ATmega8__)caseTIMER0A:// connect pwm to pin on timer 0sbi(TCCR0,COM00);OCR0=val;// set pwm dutybreak;#endif//为了简化篇幅,省略部分代码,具体请查看库源代码caseNOT_ON_TIMER:default:if(val<128){digitalWrite(pin,LOW);}else{digitalWrite(pin,HIGH);}}} 用USB逻辑分析仪来分...
tone(pin,frequency)函数可以产生固定频率的PWM信号来驱动扬声器发声，pin参数是指连接到蜂鸣器的数字引脚，frequency参数是以Hz（赫兹）为单位的频率值；noTone(pin)函数表示停止发声，pin参数表示所要设置的引脚；pulseIn(pin,value)函数用于读取引脚脉冲的时间长度，pin参数是指读取脉冲的引脚，value是指读取的脉冲类型...
44 http://code.google.com/p/arduino-pwm-frequency-library/downloads/list 老大，google上不去啊 ...
}voidloop() {//put your main code here, to run repeatedly:longfrequency =300; tone(buzzer, frequency); delay(100); noTone(buzzer); delay(2000);//while(1){//for(int i; i < 80; i++){//digitalWrite(buzzer, HIGH);//delay(1);//digitalWrite(buzzer, LOW);//delay(1);//}//for...
我们要在数字电路中输出模拟信号，就可以使用PWM技术实现。在嵌入式开发中，我们常用PWM来驱动LED的暗亮...
The output frequency is the 16MHz system clock frequency, divided by the prescaler value (64), divided by the 256 cycles it takes for the timer to wrap around. Note that fast PWM holds the output high one cycle longer than the compare register value. ...
// Changing Pin 3 PWM frequency int pwm Pin = 3;int directionPin = 15;int brakePin = 6;int temperatureSensePin = 2;int currentSensePin = 14;int var = 0;void setup(){ pinMode(pwmPin, OUTPUT);pinMode(directionPin, OUTPUT);pinMode(brakePin, OUTPUT);pinMode(temperatureSensePin, INPUT...
void setPwmFrequency(int pin,字节模式){发送确认();curPwmMode = 模式;如果(模式 == 0){类比写入(引脚,0);} 别的 {类比写入(引脚,128);if (pin == 5 || pin == 6 || pin == 9 || pin == 10) {如果(针 == 5 || 针 == 6){...
Arduino and Simulink / change PWM frequency. Learn more about arduino, simulink, pwm, power_electronics_control, electric_motor_control, power_conversion_control Simulink