100 lines
2.4 KiB
C++
100 lines
2.4 KiB
C++
/*
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RadioLib AX.25 Transmit AFSK Example
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This example sends AX.25 messages using
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SX1278's FSK modem. The data is modulated
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as AFSK at 1200 baud using Bell 202 tones.
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Other modules that can be used for AX.25
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with AFSK modulation:
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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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- nRF24
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- Si443x/RFM2x
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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 fsk = 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 fsk = RadioShield.ModuleA;
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// create AFSK client instance using the FSK module
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// pin 5 is connected to SX1278 DIO2
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AFSKClient audio(&fsk, 5);
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// create AX.25 client instance using the AFSK instance
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AX25Client ax25(&audio);
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void setup() {
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Serial.begin(9600);
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// initialize SX1278
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Serial.print(F("[SX1278] Initializing ... "));
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// carrier frequency: 434.0 MHz
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// bit rate: 48.0 kbps
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// frequency deviation: 50.0 kHz
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// Rx bandwidth: 125.0 kHz
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// output power: 13 dBm
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// current limit: 100 mA
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int state = fsk.beginFSK(434.0);
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// when using one of the non-LoRa modules for AX.25
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// (RF69, CC1101,, Si4432 etc.), use the basic begin() method
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// int state = fsk.begin();
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if(state == 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 AX.25 client
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Serial.print(F("[AX.25] Initializing ... "));
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// source station callsign: "N7LEM"
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// source station SSID: 0
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// preamble length: 8 bytes
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state = ax25.begin("N7LEM");
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if(state == 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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void loop() {
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// send AX.25 unnumbered information frame
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Serial.print(F("[AX.25] Sending UI frame ... "));
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// destination station callsign: "NJ7P"
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// destination station SSID: 0
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int state = ax25.transmit("Hello World!", "NJ7P");
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if (state == ERR_NONE) {
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// the packet was successfully transmitted
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Serial.println(F("success!"));
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} else {
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// some error occurred
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Serial.print(F("failed, code "));
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Serial.println(state);
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}
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delay(1000);
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}
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