RadioLib/examples/RTTY/RTTY_Transmit_AFSK/RTTY_Transmit_AFSK.ino

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3.3 KiB
C++

/*
RadioLib RTTY Transmit AFSK Example
This example sends RTTY message using SX1278's
FSK modem. The data is modulated as AFSK.
Other modules that can be used for RTTY:
- SX127x/RFM9x
- RF69
- SX1231
- CC1101
- Si443x/RFM2x
- SX126x/LLCC68 (only devices without TCXO!)
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 AFSK client instance using the FSK module
// this requires connection to the module direct
// input pin, here connected to Arduino pin 5
// SX127x/RFM9x: DIO2
// RF69: DIO2
// SX1231: DIO2
// CC1101: GDO2
// Si443x/RFM2x: GPIO
// SX126x/LLCC68: DIO2
AFSKClient audio(&radio, 5);
// create RTTY client instance using the AFSK instance
RTTYClient rtty(&audio);
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: Unlike FSK RTTY, AFSK requires no rounding of
// the frequency shift.
Serial.print(F("[RTTY] Initializing ... "));
// space frequency: 400 Hz
// frequency shift: 170 Hz
// baud rate: 45 baud
// encoding: ASCII (7-bit)
// stop bits: 1
state = rtty.begin(400, 170, 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(400, 170, 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);
}