RadioLib/examples/RTTY/RTTY_Transmit/RTTY_Transmit.ino

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3.3 KiB
C++

/*
RadioLib RTTY Transmit Example
This example sends RTTY message using SX1278's
FSK modem.
Other modules that can be used for RTTY:
- SX127x/RFM9x
- RF69
- SX1231
- CC1101
- SX126x
- nRF24
- Si443x/RFM2x
- SX128x
- LR11x0
For default module settings, see the wiki page
https://github.com/jgromes/RadioLib/wiki/Default-configuration
For full API reference, see the GitHub Pages
https://jgromes.github.io/RadioLib/
*/
// include the library
#include <RadioLib.h>
// SX1278 has the following connections:
// NSS pin: 10
// DIO0 pin: 2
// RESET pin: 9
// DIO1 pin: 3
SX1278 radio = new Module(10, 2, 9, 3);
// or using RadioShield
// https://github.com/jgromes/RadioShield
//SX1278 radio = RadioShield.ModuleA;
// create RTTY client instance using the FSK module
RTTYClient rtty(&radio);
void setup() {
Serial.begin(9600);
// initialize SX1278 with default settings
Serial.print(F("[SX1278] Initializing ... "));
int state = radio.beginFSK();
// when using one of the non-LoRa modules for RTTY
// (RF69, CC1101, Si4432 etc.), use the basic begin() method
// int state = radio.begin();
if(state == RADIOLIB_ERR_NONE) {
Serial.println(F("success!"));
} else {
Serial.print(F("failed, code "));
Serial.println(state);
while(true);
}
// initialize RTTY client
// NOTE: RTTY frequency shift will be rounded
// to the nearest multiple of frequency step size.
// The exact value depends on the module:
// SX127x/RFM9x - 61 Hz
// RF69 - 61 Hz
// CC1101 - 397 Hz
// SX126x - 1 Hz
// nRF24 - 1000000 Hz
// Si443x/RFM2x - 156 Hz
// SX128x - 198 Hz
Serial.print(F("[RTTY] Initializing ... "));
// low ("space") frequency: 434.0 MHz
// frequency shift: 183 Hz
// baud rate: 45 baud
// encoding: ASCII (7-bit)
// stop bits: 1
state = rtty.begin(434.0, 183, 45);
if(state == RADIOLIB_ERR_NONE) {
Serial.println(F("success!"));
} else {
Serial.print(F("failed, code "));
Serial.println(state);
while(true);
}
/*
// RadioLib also provides ITA2 ("Baudot") support
rtty.begin(434, 183, 45, ITA2);
// All transmissions in loop() (strings and numbers)
// will now be encoded using ITA2 code
// ASCII characters that do not have ITA2 equivalent
// will be sent as NUL (including lower case letters!)
*/
}
void loop() {
Serial.print(F("[RTTY] Sending RTTY data ... "));
// send out idle condition for 500 ms
rtty.idle();
delay(500);
// RTTYClient supports all methods of the Serial class
// Arduino String class
String aStr = "Arduino String";
rtty.println(aStr);
// character array (C-String)
rtty.println("C-String");
// string saved in flash
rtty.println(F("Flash String"));
// character
rtty.println('c');
// byte
// formatting DEC/HEX/OCT/BIN is supported for
// any integer type (byte/int/long)
rtty.println(255, HEX);
// integer number
int i = 1000;
rtty.println(i);
// floating point number
float f = -3.1415;
rtty.println(f, 3);
// turn the transmitter off
rtty.standby();
Serial.println(F("done!"));
// wait for a second before transmitting again
delay(1000);
}