62 lines
1.5 KiB
C++
62 lines
1.5 KiB
C++
#include "SerialTransfer.h"
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SerialTransfer myTransfer;
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const byte OC1A_PIN = 9;
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const byte OC1B_PIN = 10;
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const word PWM_FREQ_HZ = 25000; //Adjust this value to adjust the frequency (Frequency in HZ!) (Set currently to 25kHZ)
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const word TCNT1_TOP = 16000000/(2*PWM_FREQ_HZ);
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struct STRUCT {
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char val;
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} myStruct;
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void setup() {
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// Setup Serial transfer with PC
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Serial.begin(115200);
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myTransfer.begin(Serial);
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pinMode(OC1A_PIN, OUTPUT);
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// Clear Timer1 control and count registers
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TCCR1A = 0;
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TCCR1B = 0;
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TCNT1 = 0;
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// Set Timer1 configuration
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// COM1A(1:0) = 0b10 (Output A clear rising/set falling)
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// COM1B(1:0) = 0b00 (Output B normal operation)
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// WGM(13:10) = 0b1010 (Phase correct PWM)
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// ICNC1 = 0b0 (Input capture noise canceler disabled)
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// ICES1 = 0b0 (Input capture edge select disabled)
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// CS(12:10) = 0b001 (Input clock select = clock/1)
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TCCR1A |= (1 << COM1A1) | (1 << WGM11);
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TCCR1B |= (1 << WGM13) | (1 << CS10);
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ICR1 = TCNT1_TOP;
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}
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void loop() {
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if(myTransfer.available())
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{
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// send all received data back to Python
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for(uint16_t i=0; i < myTransfer.bytesRead; i++){
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myTransfer.packet.txBuff[i] = myTransfer.packet.rxBuff[i];
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}
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myTransfer.sendData(myTransfer.bytesRead);
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uint16_t recSize = 0;
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recSize = myTransfer.rxObj(myStruct, recSize);
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int x = myStruct.val * 2; // I have no idea why I have to multiply it by 2, but I do
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setPwmDuty(x);
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}
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}
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void setPwmDuty(byte duty) {
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OCR1A = (word) (duty*TCNT1_TOP)/100;
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}
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