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Faster reference clock rate (using pin 3), skip outer loop to slow PSK.

This commit is contained in:
Stephen Olesen 2015-07-02 19:58:54 -06:00
parent 77a8c62b78
commit 26ffcd332b
1 changed files with 14 additions and 8 deletions
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22
examples/PSK31-Transmit/PSK31-Transmit.ino
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@ -5,10 +5,10 @@ DDS dds;
void setup() { void setup() {
Serial.begin(9600); Serial.begin(9600);
pinMode(11, OUTPUT); pinMode(3, OUTPUT);
pinMode(2, OUTPUT); pinMode(2, OUTPUT);
// put your setup code here, to run once: // put your setup code here, to run once:
dds.setReferenceClock(8000); dds.setReferenceClock(32000);
dds.start(); dds.start();
dds.setFrequency(1000); dds.setFrequency(1000);
dds.on(); dds.on();
@ -41,7 +41,7 @@ void loop() {
// return; // return;
for(i = 0; i < strlen(string); i++) { for(i = 0; i < strlen(string); i++) {
sendChar(string[i]); sendChar(string[i]);
Serial.println(string[i]); //Serial.println(string[i]);
} }
} }
@ -51,19 +51,25 @@ const uint8_t amplitudeShape[41] = {
// This will trigger at 8kHz // This will trigger at 8kHz
ISR(ADC_vect) { ISR(ADC_vect) {
static uint8_t outer = 0;
static uint8_t tcnt = 0; static uint8_t tcnt = 0;
TIFR1 |= _BV(ICF1); TIFR1 |= _BV(ICF1);
// Wave shaping // Wave shaping
PORTD |= _BV(2);
// TODO: Improve how this would perform. // TODO: Improve how this would perform.
if(tcnt < 82)
dds.setAmplitude(amplitudeShape[(82-tcnt)/2]);
if(tcnt > (255-82))
dds.setAmplitude(amplitudeShape[(tcnt-173)/2]);
//else if(tcnt > (255-64)) //else if(tcnt > (255-64))
// dds.setAmplitude((255 - tcnt)); // dds.setAmplitude((255 - tcnt));
//else dds.setAmplitude(255); //else dds.setAmplitude(255);
if(tcnt < 81)
dds.setAmplitude(amplitudeShape[(81-tcnt)/2]);
if(tcnt > (255-81))
dds.setAmplitude(amplitudeShape[(tcnt-174)/2]);
dds.clockTick(); dds.clockTick();
PORTD &= ~_BV(2);
if(outer++ == 3) {
outer = 0;
} else {
return;
}
if(tcnt++ == 0) { // Next bit if(tcnt++ == 0) { // Next bit
//PORTD ^= _BV(2); // Diagnostic pin (D2) //PORTD ^= _BV(2); // Diagnostic pin (D2)
if(!sent) { if(!sent) {