53 lines
1.3 KiB
C++
Executable File
53 lines
1.3 KiB
C++
Executable File
/* Fox Hunt */
|
|
|
|
#include <HAMShield.h>
|
|
#include <Wire.h>
|
|
|
|
#define PWM_PIN 3
|
|
#define RESET_PIN A3
|
|
#define SWITCH_PIN 2
|
|
|
|
// transmit for 1 minute, every 10 minutes
|
|
|
|
#define TRANSMITLENGTH 1
|
|
#define INTERVAL 10
|
|
#define RANDOMCHANCE 3
|
|
|
|
HAMShield radio;
|
|
|
|
void setup() {
|
|
// NOTE: if not using PWM out, it should be held low to avoid tx noise
|
|
pinMode(PWM_PIN, OUTPUT);
|
|
digitalWrite(PWM_PIN, LOW);
|
|
|
|
// prep the switch
|
|
pinMode(SWITCH_PIN, INPUT_PULLUP);
|
|
|
|
// set up the reset control pin
|
|
pinMode(RESET_PIN, OUTPUT);
|
|
digitalWrite(RESET_PIN, HIGH);
|
|
|
|
Wire.begin();
|
|
radio.initialize();
|
|
radio.setFrequency(145510);
|
|
radio.setModeReceive();
|
|
}
|
|
|
|
void loop() {
|
|
waitMinute(INTERVAL + random(0,RANDOMCHANCE)); // wait before transmitting, randomly up to 3 minutes later
|
|
if(radio.waitForChannel(30000,2000)) { // wait for a clear channel, abort after 30 seconds, wait 2 seconds of dead air for breakers
|
|
radio.setModeTransmit(); // turn on transmit mode
|
|
tone(1000,11,TRANSMITLENGTH * 60 * 1000); // play a long solid tone
|
|
radio.morseOut("1ZZ9ZZ/B FOXHUNT"); // identify the fox hunt transmitter
|
|
radio.setModeReceive(); // turn off the transmit mode
|
|
}
|
|
}
|
|
|
|
// a function so we can wait by minutes
|
|
|
|
void waitMinute(int period) {
|
|
delay(period * 60 * 1000);
|
|
}
|
|
|
|
|