main.cpp

00001 #include "sx12xx.h"
00002 
00003 #ifdef TARGET_FF_ARDUINO    /* pins of SX126xDVK1xAS board */
00004     SPI spi(D11, D12, D13); // mosi, miso, sclk
00005     //           spi, nss, busy, dio1
00006     SX126x radio(spi,  D7,   D3,   D5 );
00007     #define CHIP_TYPE_SX1262        0
00008     #define CHIP_TYPE_SX1261        1
00009     DigitalIn chipType(A2);
00010     AnalogIn xtalSel(A3);
00011     DigitalOut antswPower(D8);
00012 #endif /* TARGET_FF_ARDUINO */
00013 
00014 /**********************************************************************/
00015 volatile bool txDone;
00016 
00017 void txDone_callback()
00018 {
00019     txDone = true;
00020 }
00021 
00022 int main()
00023 {
00024     uint8_t seq = 0;
00025     
00026     printf("\r\nreset-tx ");
00027 
00028     radio.setStandby(STBY_XOSC);
00029     radio.setPacketType(PACKET_TYPE_LORA);
00030     radio.setMHz(915.5); 
00031 
00032     {
00033         ModulationParams_t mp;
00034 
00035         mp.lora.spreadingFactor = 11;
00036         mp.lora.bandwidth = LORA_BW_500;
00037         mp.lora.codingRate = LORA_CR_4_5;
00038         mp.lora.LowDatarateOptimize = 0;
00039 
00040         radio.xfer(OPCODE_SET_MODULATION_PARAMS, 4,0, mp.buf);
00041     }
00042 
00043     if (chipType == CHIP_TYPE_SX1262)
00044         radio.set_tx_dbm(true, 22);
00045     else
00046         radio.set_tx_dbm(false, 14);
00047 
00048 
00049     {    
00050         PacketParams_t p;
00051 
00052         p.lora.PreambleLengthHi = 0;
00053         p.lora.PreambleLengthLo = 8;
00054         p.lora.HeaderType = HEADER_TYPE_VARIABLE_LENGTH;
00055         /* constant payload length of one byte */
00056         p.lora.PayloadLength = 1;
00057         p.lora.CRCType = LORA_CRC_ON;
00058         p.lora.InvertIQ = STANDARD_IQ;
00059 
00060         radio.xfer(OPCODE_SET_PACKET_PARAMS, 6,0, p.buf);
00061     }
00062 
00063                 
00064     antswPower = 1;
00065     radio.SetDIO2AsRfSwitchCtrl(1);
00066     
00067     radio.txDone = txDone_callback;
00068        
00069     for (;;) {  
00070      
00071         uint8_t buf[2];
00072         buf[0] = 0; // TX base address
00073         buf[1] = 0; // RX base address
00074         radio.xfer(OPCODE_SET_BUFFER_BASE_ADDR, 2,0, buf);
00075         {    
00076        
00077     }
00078        
00079         radio.tx_buf[0] = seq;  /* set payload */
00080         txDone = false;
00081         radio.start_tx(1);   /* begin transmission */
00082         
00083         printf("sent\r\n");
00084         while (!txDone) {
00085             radio.service();
00086         }
00087         printf("tx %x\r\n", seq);
00088         printf("got-tx-done\r\n");
00089         
00090         wait(0.5);  /* throttle sending rate */
00091         seq++;  /* change payload */
00092     }
00093 }
00094