93 lines
2.5 KiB
C++
93 lines
2.5 KiB
C++
/* Hamshield
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* Example: AX25 Receive
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* This example receives AFSK test data. You will need seperate
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* AFSK equipment to send data for this example.
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* Connect the HamShield to your Arduino. Screw the antenna
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* into the HamShield RF jack. Plug a pair of headphones into
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* the HamShield. Connect the Arduino to wall power and then to
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* your computer via USB. After uploading this program to your
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* Arduino, open the Serial Monitor so you will see the AFSK
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* packet. Send AFSK packet from AFSK equipment at 145.01MHz.
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* Note: add message receive code
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*/
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#include <HamShield.h>
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#include <DDS.h>
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#include <packet.h>
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#define PWM_PIN 3
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#define RESET_PIN A3
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#define SWITCH_PIN 2
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HamShield radio;
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DDS dds;
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AFSK afsk;
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void setup() {
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// NOTE: if not using PWM out, it should be held low to avoid tx noise
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pinMode(PWM_PIN, OUTPUT);
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digitalWrite(PWM_PIN, LOW);
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// prep the switch
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pinMode(SWITCH_PIN, INPUT_PULLUP);
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// set up the reset control pin
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pinMode(RESET_PIN, OUTPUT);
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// turn on radio
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digitalWrite(RESET_PIN, HIGH);
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Serial.begin(9600);
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Serial.println(F("Radio test connection"));
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Serial.println(radio.testConnection(), DEC);
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Serial.println(F("Initialize"));
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delay(100);
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radio.initialize();
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radio.frequency(145010);
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radio.setSQOff();
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Serial.println(F("Frequency"));
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Serial.println(radio.getFrequency());
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delay(100);
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Serial.print(F("Squelch(H/L): "));
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Serial.print(radio.getSQHiThresh());
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Serial.print(F(" / "));
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Serial.println(radio.getSQLoThresh());
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radio.setModeReceive();
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Serial.println(F("DDS Start"));
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delay(100);
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dds.start();
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Serial.println(F("AFSK start"));
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delay(100);
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afsk.start(&dds);
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Serial.println(F("Starting..."));
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delay(100);
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dds.setAmplitude(255);
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}
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uint32_t last = 0;
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void loop() {
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if(afsk.decoder.read() || afsk.rxPacketCount()) {
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// A true return means something was put onto the packet FIFO
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// If we actually have data packets in the buffer, process them all now
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while(afsk.rxPacketCount()) {
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AFSK::Packet *packet = afsk.getRXPacket();
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Serial.print(F("Packet: "));
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if(packet) {
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packet->printPacket(&Serial);
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AFSK::PacketBuffer::freePacket(packet);
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}
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}
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}
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}
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//TODO: d2 is the switch input, so remove this
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ISR(ADC_vect) {
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static uint8_t tcnt = 0;
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TIFR1 = _BV(ICF1); // Clear the timer flag
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//PORTD |= _BV(2); // Diagnostic pin (D2)
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//dds.clockTick();
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afsk.timer();
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//PORTD &= ~(_BV(2)); // Pin D2 off again
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}
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