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105 lines
2.8 KiB
105 lines
2.8 KiB
// Feather9x_TX |
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// -*- mode: C++ -*- |
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// Example sketch showing how to create a simple messaging client (transmitter) |
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// with the RH_RF95 class. RH_RF95 class does not provide for addressing or |
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// reliability, so you should only use RH_RF95 if you do not need the higher |
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// level messaging abilities. |
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// It is designed to work with the other example Feather9x_RX |
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#include <SPI.h> |
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#include <RH_RF95.h> |
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#define RFM95_CS 8 |
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#define RFM95_RST 4 |
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#define RFM95_INT 3 |
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// Change to 434.0 or other frequency, must match RX's freq! |
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#define RF95_FREQ 900.0 |
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// Singleton instance of the radio driver |
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RH_RF95 rf95(RFM95_CS, RFM95_INT); |
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void setup() |
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{ |
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pinMode(RFM95_RST, OUTPUT); |
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digitalWrite(RFM95_RST, HIGH); |
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Serial.begin(115200); |
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delay(1000); |
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Serial.println("Feather LoRa TX Test!"); |
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// manual reset |
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digitalWrite(RFM95_RST, LOW); |
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delay(10); |
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digitalWrite(RFM95_RST, HIGH); |
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delay(10); |
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while (!rf95.init()) { |
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Serial.println("LoRa radio init failed"); |
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Serial.println("Uncomment '#define SERIAL_DEBUG' in RH_RF95.cpp for detailed debug info"); |
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while (1); |
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} |
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Serial.println("LoRa radio init OK!"); |
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// Defaults after init are 434.0MHz, modulation GFSK_Rb250Fd250, +13dbM |
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if (!rf95.setFrequency(RF95_FREQ)) { |
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Serial.println("setFrequency failed"); |
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while (1); |
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} |
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Serial.print("Set Freq to: "); Serial.println(RF95_FREQ); |
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// Defaults after init are 434.0MHz, 13dBm, Bw = 125 kHz, Cr = 4/5, Sf = 128chips/symbol, CRC on |
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// The default transmitter power is 13dBm, using PA_BOOST. |
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// If you are using RFM95/96/97/98 modules which uses the PA_BOOST transmitter pin, then |
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// you can set transmitter powers from 5 to 23 dBm: |
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//rf95.setTxPower(23, false); |
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} |
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int16_t packetnum = 0; // packet counter, we increment per xmission |
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void loop() |
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{ |
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delay(1000); // Wait 1 second between transmits, could also 'sleep' here! |
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Serial.println("Transmitting..."); // Send a message to rf95_server |
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char radiopacket[20] = "Hello World # "; |
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itoa(packetnum++, radiopacket+13, 10); |
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Serial.print("Sending "); Serial.println(radiopacket); |
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radiopacket[19] = 0; |
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Serial.println("Sending..."); |
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delay(10); |
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rf95.send((uint8_t *)radiopacket, 20); |
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Serial.println("Waiting for packet to complete..."); |
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delay(10); |
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rf95.waitPacketSent(); |
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// Now wait for a reply |
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uint8_t buf[RH_RF95_MAX_MESSAGE_LEN]; |
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uint8_t len = sizeof(buf); |
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Serial.println("Waiting for reply..."); |
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if (rf95.waitAvailableTimeout(1000)) |
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{ |
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// Should be a reply message for us now |
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if (rf95.recv(buf, &len)) |
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{ |
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Serial.print("Got reply: "); |
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Serial.println((char*)buf); |
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Serial.print("RSSI: "); |
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Serial.println(rf95.lastRssi(), DEC); |
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} |
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else |
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{ |
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Serial.println("Receive failed"); |
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} |
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} |
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else |
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{ |
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Serial.println("No reply, is there a listener around?"); |
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} |
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}
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