141 lines
3.3 KiB
C++
141 lines
3.3 KiB
C++
/*
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RadioLib RTTY Transmit AFSK Example
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This example sends RTTY message using SX1278's
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FSK modem. The data is modulated as AFSK.
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Other modules that can be used for RTTY:
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- SX127x/RFM9x
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- RF69
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- SX1231
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- CC1101
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- Si443x/RFM2x
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- SX126x/LLCC68 (only devices without TCXO!)
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For default module settings, see the wiki page
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https://github.com/jgromes/RadioLib/wiki/Default-configuration
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For full API reference, see the GitHub Pages
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https://jgromes.github.io/RadioLib/
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*/
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// include the library
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#include <RadioLib.h>
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// SX1278 has the following connections:
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// NSS pin: 10
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// DIO0 pin: 2
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// RESET pin: 9
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// DIO1 pin: 3
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SX1278 radio = new Module(10, 2, 9, 3);
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// or using RadioShield
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// https://github.com/jgromes/RadioShield
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//SX1278 radio = RadioShield.ModuleA;
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// create AFSK client instance using the FSK module
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// this requires connection to the module direct
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// input pin, here connected to Arduino pin 5
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// SX127x/RFM9x: DIO2
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// RF69: DIO2
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// SX1231: DIO2
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// CC1101: GDO2
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// Si443x/RFM2x: GPIO
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// SX126x/LLCC68: DIO2
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AFSKClient audio(&radio, 5);
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// create RTTY client instance using the AFSK instance
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RTTYClient rtty(&audio);
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void setup() {
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Serial.begin(9600);
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// initialize SX1278 with default settings
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Serial.print(F("[SX1278] Initializing ... "));
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int state = radio.beginFSK();
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// when using one of the non-LoRa modules for RTTY
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// (RF69, CC1101, Si4432 etc.), use the basic begin() method
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// int state = radio.begin();
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if(state == RADIOLIB_ERR_NONE) {
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Serial.println(F("success!"));
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} else {
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Serial.print(F("failed, code "));
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Serial.println(state);
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while(true);
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}
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// initialize RTTY client
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// NOTE: Unlike FSK RTTY, AFSK requires no rounding of
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// the frequency shift.
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Serial.print(F("[RTTY] Initializing ... "));
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// space frequency: 400 Hz
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// frequency shift: 170 Hz
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// baud rate: 45 baud
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// encoding: ASCII (7-bit)
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// stop bits: 1
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state = rtty.begin(400, 170, 45);
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if(state == RADIOLIB_ERR_NONE) {
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Serial.println(F("success!"));
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} else {
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Serial.print(F("failed, code "));
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Serial.println(state);
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while(true);
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}
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/*
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// RadioLib also provides ITA2 ("Baudot") support
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rtty.begin(400, 170, 45, ITA2);
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// All transmissions in loop() (strings and numbers)
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// will now be encoded using ITA2 code
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// ASCII characters that do not have ITA2 equivalent
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// will be sent as NUL (including lower case letters!)
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*/
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}
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void loop() {
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Serial.print(F("[RTTY] Sending RTTY data ... "));
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// send out idle condition for 500 ms
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rtty.idle();
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delay(500);
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// RTTYClient supports all methods of the Serial class
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// Arduino String class
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String aStr = "Arduino String";
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rtty.println(aStr);
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// character array (C-String)
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rtty.println("C-String");
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// string saved in flash
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rtty.println(F("Flash String"));
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// character
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rtty.println('c');
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// byte
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// formatting DEC/HEX/OCT/BIN is supported for
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// any integer type (byte/int/long)
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rtty.println(255, HEX);
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// integer number
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int i = 1000;
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rtty.println(i);
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// floating point number
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float f = -3.1415;
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rtty.println(f, 3);
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// turn the transmitter off
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rtty.standby();
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Serial.println(F("done!"));
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// wait for a second before transmitting again
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delay(1000);
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}
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