main.cpp

00001 #include "sx12xx.h"
00002 #include "mbed.h"
00003 
00004 #ifdef TARGET_FF_ARDUINO    /* pins of SX126xDVK1xAS board */
00005     SPI spi(D11, D12, D13); // mosi, miso, sclk
00006     //           spi, nss, busy, dio1
00007     SX126x radio(spi,  D7,   D3,   D5 );
00008     #define CHIP_TYPE_SX1262        0
00009     #define CHIP_TYPE_SX1261        1
00010     DigitalIn chipType(A2);
00011     AnalogIn xtalSel(A3);
00012     DigitalOut antswPower(D8);
00013 #endif /* TARGET_FF_ARDUINO */
00014 
00015 Serial device(USBTX, USBRX);  // tx, rx
00016 
00017 /**********************************************************************/
00018 volatile bool txDone;
00019 
00020 void txDone_callback()
00021 {
00022     txDone = true;
00023 }
00024 
00025 int main()
00026 {
00027     device.baud(57600);
00028     uint8_t seq = 0;
00029     
00030     printf("\r\nreset-tx ");
00031 
00032     radio.setStandby(STBY_XOSC);
00033     radio.setPacketType(PACKET_TYPE_LORA);
00034     radio.setMHz(915.5); 
00035 
00036     {
00037         ModulationParams_t mp;
00038 
00039         mp.lora.spreadingFactor = 5;
00040         mp.lora.bandwidth = LORA_BW_500;
00041         mp.lora.codingRate = LORA_CR_4_5;
00042         mp.lora.LowDatarateOptimize = 0;
00043 
00044         radio.xfer(OPCODE_SET_MODULATION_PARAMS, 4, mp.buf);
00045     }
00046 
00047     if (chipType == CHIP_TYPE_SX1262)
00048         radio.set_tx_dbm(true, 20);
00049     else
00050         radio.set_tx_dbm(false, 14);
00051 
00052 
00053     {    
00054         PacketParams_t p;
00055 
00056         p.lora.PreambleLengthHi = 0;
00057         p.lora.PreambleLengthLo = 8;
00058         p.lora.HeaderType = HEADER_TYPE_VARIABLE_LENGTH;
00059         /* constant payload length of one byte */
00060         p.lora.PayloadLength = 1;
00061         p.lora.CRCType = CRC_ON;
00062         p.lora.InvertIQ = STANDARD_IQ;
00063 
00064         radio.xfer(OPCODE_SET_PACKET_PARAMS, 6, p.buf);
00065     }
00066 
00067                 
00068     antswPower = 1;
00069     radio.SetDIO2AsRfSwitchCtrl(1);
00070     
00071     radio.txDone = txDone_callback;
00072     
00073     for (;;) {       
00074         radio.tx_buf[200] = seq;  /* set payload */
00075         txDone = false;
00076         radio.start_tx(1);   /* begin transmission */
00077         
00078         printf("sent\r\n");
00079         while (!txDone) {
00080             radio.service();
00081         }
00082 
00083         printf("got-tx-done\r\n");
00084         
00085         wait(0.5);  /* throttle sending rate */
00086         seq++;  /* change payload */
00087     }
00088 }
00089