Created
April 14, 2017 10:54
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arduino 25khz pwm drive
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| word VentPin = 3; | |
| void setup() { | |
| pinMode(VentPin, OUTPUT); | |
| pwm25kHzBegin(); | |
| } | |
| void loop() { | |
| pwmDuty(19); // 25% (range = 0-79 = 1.25-100%) | |
| delay(5000); | |
| pwmDuty(39); // 50% (range = 0-79 = 1.25-100%) | |
| delay (5000); | |
| pwmDuty(59); // 75% (range = 0-79 = 1.25-100%) | |
| delay (5000); | |
| } | |
| void pwm25kHzBegin() { | |
| TCCR2A = 0; // TC2 Control Register A | |
| TCCR2B = 0; // TC2 Control Register B | |
| TIMSK2 = 0; // TC2 Interrupt Mask Register | |
| TIFR2 = 0; // TC2 Interrupt Flag Register | |
| TCCR2A |= (1 << COM2B1) | (1 << WGM21) | (1 << WGM20); // OC2B cleared/set on match when up/down counting, fast PWM | |
| TCCR2B |= (1 << WGM22) | (1 << CS21); // prescaler 8 | |
| OCR2A = 79; // TOP overflow value (Hz) | |
| OCR2B = 0; | |
| } | |
| void pwmDuty(byte ocrb) { | |
| OCR2B = ocrb; // PWM Width (duty) | |
| } |
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Is it possible to also output a 25KHz signal for PWM on pin 11 in this way?