main.cpp

00001 #include "radio.h"
00002 
00003 // Semtech radio definitions for SX127x, SX126x and SX128x
00004 
00005 #if defined(SX127x_H)
00006     #define BW_KHZ              500
00007     #define SPREADING_FACTOR    11
00008     #define CF_HZ               912000000
00009     #define TX_DBM              20
00010 #elif defined(SX126x_H)
00011     #define BW_KHZ              500
00012     #define SPREADING_FACTOR    10
00013     #define CF_HZ               915000000
00014     #define TX_DBM              (Radio::chipType == CHIP_TYPE_SX1262 ? 20 : 14) 
00015 #elif defined(SX128x_H)
00016     #define BW_KHZ              200
00017     #define SPREADING_FACTOR    7
00018     #define CF_HZ               2487000000
00019     #define TX_DBM              6
00020 #endif
00021 
00022 /******************** Setup radio transmitter ****************************/
00023 
00024 
00025 volatile bool txDone;
00026 
00027 void txDoneCB()
00028 {
00029     txDone = true;
00030 }
00031 
00032 void rxDoneCB(uint8_t size, float rssi, float snr)
00033 {
00034 }
00035 
00036     // Define radio events for transmitter
00037 
00038 const RadioEvents_t rev = {
00039     /* Dio0_top_half */     NULL,
00040     /* TxDone_topHalf */    NULL,
00041     /* TxDone_botHalf */    txDoneCB,
00042     /* TxTimeout  */        NULL,
00043     /* RxDone  */           rxDoneCB,
00044     /* RxTimeout  */        NULL,
00045     /* RxError  */          NULL,
00046     /* FhssChangeChannel  */NULL,
00047     /* CadDone  */          NULL
00048 };
00049 
00050 int main()
00051 {
00052     uint8_t seq = 0;  //  Set initial transmit sequence to 0
00053  
00054     printf("\r\nreset-tx ");
00055     
00056     // Start radio transmitter after POR or reset
00057 
00058     Radio::Init(&rev);
00059 
00060     //Set radio properties for transmitter
00061 
00062     Radio::Standby();
00063     Radio::LoRaModemConfig(BW_KHZ, SPREADING_FACTOR, 1);
00064     Radio::SetChannel(CF_HZ);
00065 
00066     // Set transmitter output power
00067 
00068     Radio::set_tx_dbm(TX_DBM);
00069 
00070     // Setup transmit packet payload  -> preambleLen, fixLen, crcOn, invIQ
00071                
00072     Radio::LoRaPacketConfig(8, false, true, false);
00073     
00074     printf("\n");
00075     
00076     printf("%02d \r\n\n", seq);
00077 
00078     for (;;) {
00079         Radio::radio.tx_buf[0] = seq;  // set payload 
00080         txDone = false;
00081         Radio::Send(10, 0, 0, 0);   // begin transmission of payload 
00082 
00083         while (!txDone) {
00084             Radio::service();
00085         }
00086 
00087         // Transmit payload every 500mS
00088 
00089         wait(0.5);  // throttle sending rate 
00090         seq++;  // change payload (increment sequence number)
00091         printf("%02d \r\n\n", seq);  // Print sequence number
00092         
00093         }
00094 }