152 lines
3.8 KiB
C++
152 lines
3.8 KiB
C++
/* Hamshield
|
|
* Example: HandyTalkie
|
|
* This is a simple example to demonstrate HamShield receive
|
|
* and transmit functionality.
|
|
* Connect the HamShield to your Arduino. Screw the antenna
|
|
* into the HamShield RF jack. Plug a pair of headphones into
|
|
* the HamShield. Connect the Arduino to wall power and then
|
|
* to your computer via USB. After uploading this program to
|
|
* your Arduino, open the Serial Monitor. Press the button on
|
|
* the HamShield to begin setup. After setup is complete, type
|
|
* your desired Tx/Rx frequency, in hertz, into the bar at the
|
|
* top of the Serial Monitor and click the "Send" button.
|
|
* To test with another HandyTalkie (HT), key up on your HT
|
|
* and make sure you can hear it through the headphones
|
|
* attached to the HamShield. Key up on the HamShield by
|
|
* holding the button.
|
|
*/
|
|
|
|
#include <HamShield.h>
|
|
|
|
// create object for radio
|
|
HamShield radio;
|
|
// To use non-standard pins, use the following initialization
|
|
//HamShield radio(ncs_pin, clk_pin, dat_pin);
|
|
|
|
#define LED_PIN 13
|
|
#define RSSI_REPORT_RATE_MS 5000
|
|
|
|
#define PWM_PIN 3
|
|
#define RESET_PIN A3
|
|
#define SWITCH_PIN 2
|
|
|
|
bool blinkState = false;
|
|
bool currently_tx;
|
|
|
|
uint32_t freq;
|
|
|
|
unsigned long rssi_timeout;
|
|
|
|
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, LOW);
|
|
|
|
|
|
// initialize serial communication
|
|
Serial.begin(9600);
|
|
Serial.println("press the switch or send any character to begin...");
|
|
|
|
while (digitalRead(SWITCH_PIN) && !Serial.available());
|
|
Serial.read(); // flush
|
|
|
|
// let the AU ot of reset
|
|
digitalWrite(RESET_PIN, HIGH);
|
|
delay(5); // wait for device to come up
|
|
|
|
Serial.println("beginning radio setup");
|
|
|
|
// verify connection
|
|
Serial.println("Testing device connections...");
|
|
Serial.println(radio.testConnection() ? "RDA radio connection successful" : "RDA radio connection failed");
|
|
|
|
// initialize device
|
|
Serial.println("Initializing I2C devices...");
|
|
radio.initialize(); // initializes automatically for UHF 12.5kHz channel
|
|
|
|
Serial.println("setting default Radio configuration");
|
|
radio.dangerMode();
|
|
|
|
// set frequency
|
|
Serial.println("changing frequency");
|
|
|
|
radio.setSQOff();
|
|
freq = 446000;
|
|
radio.frequency(freq);
|
|
|
|
// set to receive
|
|
|
|
radio.setModeReceive();
|
|
currently_tx = false;
|
|
Serial.print("config register is: ");
|
|
Serial.println(radio.readCtlReg());
|
|
Serial.println(radio.readRSSI());
|
|
|
|
/*
|
|
// set to transmit
|
|
radio.setModeTransmit();
|
|
// maybe set PA bias voltage
|
|
Serial.println("configured for transmit");
|
|
radio.setTxSourceMic();
|
|
|
|
|
|
*/
|
|
radio.setRfPower(0);
|
|
|
|
// configure Arduino LED for
|
|
pinMode(LED_PIN, OUTPUT);
|
|
rssi_timeout = 0;
|
|
|
|
}
|
|
|
|
void loop() {
|
|
if (!digitalRead(SWITCH_PIN))
|
|
{
|
|
if (!currently_tx)
|
|
{
|
|
currently_tx = true;
|
|
|
|
// set to transmit
|
|
radio.setModeTransmit();
|
|
Serial.println("Tx");
|
|
//radio.setTxSourceMic();
|
|
//radio.setRfPower(1);
|
|
}
|
|
} else if (currently_tx) {
|
|
radio.setModeReceive();
|
|
currently_tx = false;
|
|
Serial.println("Rx");
|
|
}
|
|
|
|
|
|
if (Serial.available()) {
|
|
if (Serial.peek() == 'r') {
|
|
Serial.read();
|
|
digitalWrite(RESET_PIN, LOW);
|
|
delay(1000);
|
|
digitalWrite(RESET_PIN, HIGH);
|
|
radio.initialize(); // initializes automatically for UHF 12.5kHz channel
|
|
} else {
|
|
Serial.setTimeout(40);
|
|
freq = Serial.parseInt();
|
|
Serial.flush();
|
|
radio.frequency(freq);
|
|
Serial.print("set frequency: ");
|
|
Serial.println(freq);
|
|
}
|
|
}
|
|
|
|
if (!currently_tx && (millis() - rssi_timeout) > RSSI_REPORT_RATE_MS)
|
|
{
|
|
Serial.println(radio.readRSSI());
|
|
rssi_timeout = millis();
|
|
}
|
|
}
|