kopia lustrzana https://github.com/jgromes/RadioLib
[FSK4] Example formatting update
rodzic
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20b0f11ee6
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@ -1,14 +1,13 @@
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/*
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RadioLib FSK4 Transmit Example
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This example sends an example FSK-4 'Horus Binary' message using SX1278's
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FSK modem.
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This example sends an example FSK-4 'Horus Binary' message
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using SX1278's FSK modem.
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This signal can be demodulated using a SSB demodulator (SDR or otherwise), and
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horusdemodlib: https://github.com/projecthorus/horusdemodlib/wiki
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This signal can be demodulated using a SSB demodulator (SDR or otherwise),
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and horusdemodlib: https://github.com/projecthorus/horusdemodlib/wiki
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Other modules that can be used for FSK4:
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(Untested, but work with RTTY to are likely to work here too)
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- SX127x/RFM9x
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- RF69
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- SX1231
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@ -39,22 +38,24 @@ SX1278 radio = new Module(10, 2, 9, 3);
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// https://github.com/jgromes/RadioShield
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//SX1278 radio = RadioShield.ModuleA;
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// create FAK4 client instance using the FSK module
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// create FSK4 client instance using the FSK module
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FSK4Client fsk4(&radio);
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// A 'canned' encoded Horus Binary telemetry packet.
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// Refer here for packet format information:
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// An encoded Horus Binary telemetry packet.
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// Refer here for packet format information:
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// https://github.com/projecthorus/horusdemodlib/wiki/2---Modem-Details#horus-binary-v1-mode-4-fsk
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// After demodulation, deinterleaving, and descrambling, this results in a packet: 00000001172D0000000000000000D20463010AFF2780
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// This decodes to the Habitat-compatible telemetry string: $$4FSKTEST,0,01:23:45,0.00000,0.00000,1234,99,1,10,5.00*ABCD
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uint8_t sample_packet[] = {
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0x45, 0x24, 0x24, 0x48, 0x2F, 0x12, 0x16, 0x08, 0x15, 0xC1,
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0x49, 0xB2, 0x06, 0xFC, 0x92, 0xEB, 0x93, 0xD7, 0xEE, 0x5D,
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0x35, 0xA0, 0x91, 0xDA, 0x8D, 0x5F, 0x85, 0x6B, 0x63, 0x03,
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0x6B, 0x60, 0xEA, 0xFE, 0x55, 0x9D, 0xF1, 0xAB, 0xE5, 0x5E,
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0xDB, 0x7C, 0xDB, 0x21, 0x5A, 0x19
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// After demodulation, deinterleaving, and descrambling, this results in a packet:
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// 00000001172D0000000000000000D20463010AFF2780
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// This decodes to the Habitat-compatible telemetry string:
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// $$4FSKTEST,0,01:23:45,0.00000,0.00000,1234,99,1,10,5.00*ABCD
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int horusPacketLen = 45;
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byte horusPacket[] = {
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0x45, 0x24, 0x24, 0x48, 0x2F, 0x12, 0x16, 0x08, 0x15, 0xC1,
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0x49, 0xB2, 0x06, 0xFC, 0x92, 0xEB, 0x93, 0xD7, 0xEE, 0x5D,
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0x35, 0xA0, 0x91, 0xDA, 0x8D, 0x5F, 0x85, 0x6B, 0x63, 0x03,
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0x6B, 0x60, 0xEA, 0xFE, 0x55, 0x9D, 0xF1, 0xAB, 0xE5, 0x5E,
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0xDB, 0x7C, 0xDB, 0x21, 0x5A, 0x19
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};
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uint8_t sample_packet_len = 45;
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void setup() {
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Serial.begin(9600);
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@ -88,7 +89,7 @@ void setup() {
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// SX128x - 198 Hz
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Serial.print(F("[FSK4] Initializing ... "));
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// low ("space") frequency: 434.0 MHz
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// frequency shift: 270 Hz (actually results in a shift of 244 Hz)
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// frequency shift: 270 Hz
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// baud rate: 100 baud
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state = fsk4.begin(434.0, 270, 100);
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if(state == ERR_NONE) {
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@ -98,7 +99,6 @@ void setup() {
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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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@ -108,15 +108,18 @@ void loop() {
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fsk4.idle();
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delay(1000);
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// FSK4Client supports the write(uint8_t b) and write(uint8_t* buff, size_t len) method.
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// We use the write(uint8_t b) method to send a few bytes of preamble to allow the demodulator
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// to lock on to the signal.
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fsk4.write(0x1B); fsk4.write(0x1B); fsk4.write(0x1B); fsk4.write(0x1B);
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fsk4.write(0x1B); fsk4.write(0x1B); fsk4.write(0x1B); fsk4.write(0x1B);
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// FSK4Client supports binary write methods
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// We then send the encoded packet.
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fsk4.write(sample_packet, sample_packet_len);
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// send some bytes as a preamble
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for(int i = 0; i < 8; i++) {
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fsk4.write(0x1B);
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}
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// now send the encoded packet
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fsk4.write(horusPacket, horusPacketLen);
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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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