Cynopolis/FM-Generator
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Added code for H-Bridge driving

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This commit is contained in:
Quinn
2022-11-08 13:58:51 -06:00
parent d5a5b17770
commit bb48a196c7
1 changed files with 6 additions and 10 deletions
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16
src/main.cpp
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@@ -3,8 +3,8 @@
// pin to read in analog audio signal // pin to read in analog audio signal
#define sound_in_pin A0 #define sound_in_pin A0
// pin to output fm audio signal // pin to output fm audio signal
#define FM_out_pin 2 #define FM_out_pin1 2
#define sync_pin 2 #define FM_out_pin2 3
/** /**
* @brief Read the given analog channel. THIS DOES NOT WORK UNLESS THE ADC CHANNEL IS INITIALIZED * @brief Read the given analog channel. THIS DOES NOT WORK UNLESS THE ADC CHANNEL IS INITIALIZED
@@ -143,12 +143,10 @@ void setup() {
// put your setup code here, to run once: // put your setup code here, to run once:
pinMode(sound_in_pin, INPUT); pinMode(sound_in_pin, INPUT);
pinMode(sync_pin, OUTPUT);
digitalWrite(sync_pin, LOW);
// setup PWM // setup PWM
Serial.println("Setting up PWM"); Serial.println("Setting up PWM");
setupPWM(FM_out_pin); setupPWM(FM_out_pin1);
// set up ADC channel 0 // set up ADC channel 0
Serial.println("Setting up ADC"); Serial.println("Setting up ADC");
@@ -163,7 +161,7 @@ int sine_wave[997] = {2048,2060,2073,2086,2099,2112,2125,2138,2151,2164,2176,218
uint32_t passed_time = 0; uint32_t passed_time = 0;
int FM_factor; int FM_factor;
uint32_t sig_frequency = 42000; // the period of the signal in microseconds uint32_t sig_frequency = 30000; // the period of the signal in microseconds
uint32_t timer = 0; uint32_t timer = 0;
void loop() { void loop() {
@@ -174,9 +172,7 @@ void loop() {
FM_factor = map(FM_factor, 0, 4095, 10000, -10000); FM_factor = map(FM_factor, 0, 4095, 10000, -10000);
//modulate the carrier signal with the message signal by changing the reset value of the timer //modulate the carrier signal with the message signal by changing the reset value of the timer
// TC_SetRC(TC2, 0, 997 + FM_factor); // TC_SetRC(TC2, 0, 997 + FM_factor);
sig_frequency = 42000 + FM_factor; sig_frequency = 40000 + FM_factor;
setPWMFrequency(sig_frequency, FM_out_pin); setPWMFrequency(sig_frequency, FM_out_pin1);
} }
} }