First attempt at LoRa USB Tx
Dependencies: BufferedSerial SX1276GenericLib mbed
Fork of DISCO-L072CZ-LRWAN1_LoRa_PingPong by
main.cpp
- Committer:
- akashvibhute
- Date:
- 2018-01-02
- Revision:
- 11:52f7b34f1d3a
- Parent:
- 10:f84959c2e044
File content as of revision 11:52f7b34f1d3a:
/* * Copyright (c) 2017 Helmut Tschemernjak * 30826 Garbsen (Hannover) Germany * Licensed under the Apache License, Version 2.0); */ #include "main.h" DigitalOut myled(LED1); BufferedSerial *ser; #ifdef FEATURE_LORA /* Set this flag to '1' to display debug messages on the console */ #define DEBUG_MESSAGE 0 /* Set this flag to '1' to use the LoRa modulation or to '0' to use FSK modulation */ #define USE_MODEM_LORA 1 #define USE_MODEM_FSK !USE_MODEM_LORA #define RF_FREQUENCY 915000000//RF_FREQUENCY_868_1 // Hz #define TX_OUTPUT_POWER 20 // 14 dBm #if USE_MODEM_LORA == 1 #define LORA_BANDWIDTH 125000 // LoRa default, details in SX1276::BandwidthMap #define LORA_SPREADING_FACTOR LORA_SF12 #define LORA_CODINGRATE LORA_ERROR_CODING_RATE_4_5 #define LORA_PREAMBLE_LENGTH 8 // Same for Tx and Rx #define LORA_SYMBOL_TIMEOUT 5 // Symbols #define LORA_FIX_LENGTH_PAYLOAD_ON false #define LORA_FHSS_ENABLED false #define LORA_NB_SYMB_HOP 4 #define LORA_IQ_INVERSION_ON false #define LORA_CRC_ENABLED true #elif USE_MODEM_FSK == 1 #define FSK_FDEV 25000 // Hz #define FSK_DATARATE 19200 // bps #define FSK_BANDWIDTH 50000 // Hz #define FSK_AFC_BANDWIDTH 83333 // Hz #define FSK_PREAMBLE_LENGTH 5 // Same for Tx and Rx #define FSK_FIX_LENGTH_PAYLOAD_ON false #define FSK_CRC_ENABLED true #else #error "Please define a modem in the compiler options." #endif #define RX_TIMEOUT_VALUE 8000//3500 // in ms //#define BUFFER_SIZE 32 // Define the payload size here #define BUFFER_SIZE 4//64 // Define the payload size here /* * Global variables declarations */ typedef enum { LOWPOWER = 0, IDLE, RX, RX_TIMEOUT, RX_ERROR, TX, TX_TIMEOUT, CAD, CAD_DONE } AppStates_t; volatile AppStates_t State = LOWPOWER; /*! * Radio events function pointer */ static RadioEvents_t RadioEvents; /* * Global variables declarations */ SX1276Generic *Radio; //const uint8_t PingMsg[] = { 0xff, 0xff, 0x00, 0x00, 'P', 'I', 'N', 'G'};// "PING"; const uint8_t PingMsg[] = { 'P', 'I', 'N', 'G'};// "PING"; //const uint8_t PongMsg[] = { 0xff, 0xff, 0x00, 0x00, 'P', 'O', 'N', 'G'};// "PONG"; const uint8_t PongMsg[] = { 'P', 'O', 'N', 'G'};// "PONG"; uint16_t BufferSize = BUFFER_SIZE; uint8_t *Buffer; DigitalOut *led3; DigitalOut *led = new DigitalOut(LED1); uint8_t i; bool isMaster = false; uint8_t SX1276DataTx[4]; uint8_t SX1276DataRx[4]; bool mode = false; // false is slave, true is master uint8_t serialRxBuffer[4]; int main() { SystemClock_Config(); ser = new BufferedSerial(USBTX, USBRX); ser->baud(115200); ser->format(8); ser->printf("Hello World\n\r"); myled = 1; #if( defined ( TARGET_KL25Z ) || defined ( TARGET_LPC11U6X ) ) DigitalOut *led = new DigitalOut(LED2); #elif defined(TARGET_NUCLEO_L073RZ) DigitalOut *led = new DigitalOut(LED4); // RX red led3 = new DigitalOut(LED3); // TX blue #else DigitalOut *led = new DigitalOut(LED1); led3 = led; #endif Buffer = new uint8_t[BUFFER_SIZE]; *led3 = 1; #ifdef B_L072Z_LRWAN1_LORA Radio = new SX1276Generic(NULL, MURATA_SX1276, LORA_SPI_MOSI, LORA_SPI_MISO, LORA_SPI_SCLK, LORA_CS, LORA_RESET, LORA_DIO0, LORA_DIO1, LORA_DIO2, LORA_DIO3, LORA_DIO4, LORA_DIO5, LORA_ANT_RX, LORA_ANT_TX, LORA_ANT_BOOST, LORA_TCXO); #else // RFM95 Radio = new SX1276Generic(NULL, RFM95_SX1276, LORA_SPI_MOSI, LORA_SPI_MISO, LORA_SPI_SCLK, LORA_CS, LORA_RESET, LORA_DIO0, LORA_DIO1, LORA_DIO2, LORA_DIO3, LORA_DIO4, LORA_DIO5); #endif isMaster = true; dprintf("SX1276 Ping Pong Demo Application" ); dprintf("Freqency: %.1f", (double)RF_FREQUENCY/1000000.0); dprintf("TXPower: %d dBm", TX_OUTPUT_POWER); #if USE_MODEM_LORA == 1 dprintf("Bandwidth: %d Hz", LORA_BANDWIDTH); dprintf("Spreading factor: SF%d", LORA_SPREADING_FACTOR); #elif USE_MODEM_FSK == 1 dprintf("Bandwidth: %d kHz", FSK_BANDWIDTH); dprintf("Baudrate: %d", FSK_DATARATE); #endif // Initialize Radio driver RadioEvents.TxDone = OnTxDone; RadioEvents.RxDone = OnRxDone; RadioEvents.RxError = OnRxError; RadioEvents.TxTimeout = OnTxTimeout; RadioEvents.RxTimeout = OnRxTimeout; if (Radio->Init( &RadioEvents ) == false) { while(1) { dprintf("Radio could not be detected!"); wait( 1 ); } } switch(Radio->DetectBoardType()) { case SX1276MB1LAS: if (DEBUG_MESSAGE) dprintf(" > Board Type: SX1276MB1LAS <"); break; case SX1276MB1MAS: if (DEBUG_MESSAGE) dprintf(" > Board Type: SX1276MB1LAS <"); case MURATA_SX1276: if (DEBUG_MESSAGE) dprintf(" > Board Type: MURATA_SX1276_STM32L0 <"); break; case RFM95_SX1276: if (DEBUG_MESSAGE) dprintf(" > HopeRF RFM95xx <"); break; default: dprintf(" > Board Type: unknown <"); } Radio->SetChannel(RF_FREQUENCY ); #if USE_MODEM_LORA == 1 if (LORA_FHSS_ENABLED) dprintf(" > LORA FHSS Mode <"); if (!LORA_FHSS_ENABLED) dprintf(" > LORA Mode <"); Radio->SetTxConfig( MODEM_LORA, TX_OUTPUT_POWER, 0, LORA_BANDWIDTH, LORA_SPREADING_FACTOR, LORA_CODINGRATE, LORA_PREAMBLE_LENGTH, LORA_FIX_LENGTH_PAYLOAD_ON, LORA_CRC_ENABLED, LORA_FHSS_ENABLED, LORA_NB_SYMB_HOP, LORA_IQ_INVERSION_ON, 2000 ); Radio->SetRxConfig( MODEM_LORA, LORA_BANDWIDTH, LORA_SPREADING_FACTOR, LORA_CODINGRATE, 0, LORA_PREAMBLE_LENGTH, LORA_SYMBOL_TIMEOUT, LORA_FIX_LENGTH_PAYLOAD_ON, 0, LORA_CRC_ENABLED, LORA_FHSS_ENABLED, LORA_NB_SYMB_HOP, LORA_IQ_INVERSION_ON, true ); #elif USE_MODEM_FSK == 1 dprintf(" > FSK Mode <"); Radio->SetTxConfig( MODEM_FSK, TX_OUTPUT_POWER, FSK_FDEV, 0, FSK_DATARATE, 0, FSK_PREAMBLE_LENGTH, FSK_FIX_LENGTH_PAYLOAD_ON, FSK_CRC_ENABLED, 0, 0, 0, 2000 ); Radio->SetRxConfig( MODEM_FSK, FSK_BANDWIDTH, FSK_DATARATE, 0, FSK_AFC_BANDWIDTH, FSK_PREAMBLE_LENGTH, 0, FSK_FIX_LENGTH_PAYLOAD_ON, 0, FSK_CRC_ENABLED, 0, 0, false, true ); #else #error "Please define a modem in the compiler options." #endif if (DEBUG_MESSAGE) dprintf("Starting Tx loop"); Radio->Rx( RX_TIMEOUT_VALUE ); SX1276DataTx[0] = 0x0A; SX1276DataTx[1] = 0x0B; SX1276DataTx[2] = 0x0C; SX1276DataTx[3] = 0x0D; while(1) //SX1276PingPong(); if(ser->readable() >= 1) { //if(0) { if(ser->getc() == '~') { for(int r=0; r<=3; r++){ while(ser->readable() == 0); serialRxBuffer[r] = ser->getc(); } //memcpy(serialRxBuffer, SX1276DataTx, 4); ser->printf("Transmitting data: %x%x%x%x\n",serialRxBuffer[0], serialRxBuffer[1], serialRxBuffer[2], serialRxBuffer[3]); //ser->printf("Transmitting data: %x%x%x%x\n\r",SX1276DataTx[0], SX1276DataTx[1], SX1276DataTx[2], SX1276DataTx[3]); SX1276Comm(serialRxBuffer, 1, 1); } else { //mode = 1; //SX1276Comm(SX1276DataTx, 1, 1); } } } void SystemClock_Config(void) { #ifdef B_L072Z_LRWAN1_LORA /* * The L072Z_LRWAN1_LORA clock setup is somewhat differnt from the Nucleo board. * It has no LSE. */ RCC_ClkInitTypeDef RCC_ClkInitStruct = {0}; RCC_OscInitTypeDef RCC_OscInitStruct = {0}; /* Enable HSE Oscillator and Activate PLL with HSE as source */ RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI; RCC_OscInitStruct.HSEState = RCC_HSE_OFF; RCC_OscInitStruct.HSIState = RCC_HSI_ON; RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT; RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON; RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSI; RCC_OscInitStruct.PLL.PLLMUL = RCC_PLLMUL_6; RCC_OscInitStruct.PLL.PLLDIV = RCC_PLLDIV_3; if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK) { // Error_Handler(); } /* Set Voltage scale1 as MCU will run at 32MHz */ __HAL_RCC_PWR_CLK_ENABLE(); __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1); /* Poll VOSF bit of in PWR_CSR. Wait until it is reset to 0 */ while (__HAL_PWR_GET_FLAG(PWR_FLAG_VOS) != RESET) {}; /* Select PLL as system clock source and configure the HCLK, PCLK1 and PCLK2 clocks dividers */ RCC_ClkInitStruct.ClockType = (RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2); RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK; RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1; RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1; RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1; if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_1) != HAL_OK) { // Error_Handler(); } #endif } void dump(const char *title, const void *data, int len, bool dwords) { dprintf("dump(\"%s\", 0x%x, %d bytes)", title, data, len); int i, j, cnt; unsigned char *u; const int width = 16; const int seppos = 7; cnt = 0; u = (unsigned char *)data; while (len > 0) { ser->printf("%08x: ", (unsigned int)data + cnt); if (dwords) { unsigned int *ip = ( unsigned int *)u; ser->printf(" 0x%08x\r\n", *ip); u+= 4; len -= 4; cnt += 4; continue; } cnt += width; j = len < width ? len : width; for (i = 0; i < j; i++) { ser->printf("%2.2x ", *(u + i)); if (i == seppos) ser->putc(' '); } ser->putc(' '); if (j < width) { i = width - j; if (i > seppos + 1) ser->putc(' '); while (i--) { printf("%s", " "); } } for (i = 0; i < j; i++) { int c = *(u + i); if (c >= ' ' && c <= '~') ser->putc(c); else ser->putc('.'); if (i == seppos) ser->putc(' '); } len -= width; u += width; ser->printf("\r\n"); } ser->printf("--\r\n"); } int SX1276PingPong() { while( 1 ) { #ifdef TARGET_STM32L4 WatchDogUpdate(); #endif switch( State ) { case RX: *led3 = 0; if( isMaster == true ) { if( BufferSize > 0 ) { if( memcmp(Buffer, PongMsg, sizeof(PongMsg)) == 0 ) { *led = !*led; dprintf( "...Pong" ); // Send the next PING frame memcpy(Buffer, PingMsg, sizeof(PingMsg)); // We fill the buffer with numbers for the payload for( i = sizeof(PingMsg); i < BufferSize; i++ ) { Buffer[i] = i - sizeof(PingMsg); } //wait_ms( 10 ); Radio->Send( Buffer, BufferSize ); } else if( memcmp(Buffer, PingMsg, sizeof(PingMsg)) == 0 ) { // A master already exists then become a slave dprintf( "...Ping" ); *led = !*led; isMaster = false; // Send the next PONG frame memcpy(Buffer, PongMsg, sizeof(PongMsg)); // We fill the buffer with numbers for the payload for( i = sizeof(PongMsg); i < BufferSize; i++ ) { Buffer[i] = i - sizeof(PongMsg); } //wait_ms( 10 ); Radio->Send( Buffer, BufferSize ); } else // valid reception but neither a PING or a PONG message { // Set device as master ans start again isMaster = true; Radio->Rx( RX_TIMEOUT_VALUE ); } } } else { if( BufferSize > 0 ) { if( memcmp(Buffer, PingMsg, sizeof(PingMsg)) == 0 ) { *led = !*led; dprintf( "...Ping" ); // Send the reply to the PING string memcpy(Buffer, PongMsg, sizeof(PongMsg)); // We fill the buffer with numbers for the payload for( i = sizeof(PongMsg); i < BufferSize; i++ ) { Buffer[i] = i - sizeof(PongMsg); } //wait_ms( 10 ); Radio->Send( Buffer, BufferSize ); } else // valid reception but not a PING as expected { // Set device as master and start again isMaster = true; Radio->Rx( RX_TIMEOUT_VALUE ); } } } State = LOWPOWER; break; case TX: *led3 = 1; if( isMaster == true ) { dprintf("Ping..." ); } else { dprintf("Pong..." ); } Radio->Rx( RX_TIMEOUT_VALUE ); State = LOWPOWER; break; case RX_TIMEOUT: if( isMaster == true ) { // Send the next PING frame memcpy(Buffer, PingMsg, sizeof(PingMsg)); for( i = sizeof(PingMsg); i < BufferSize; i++ ) { Buffer[i] = i - sizeof(PingMsg); } //wait_ms( 10 ); Radio->Send( Buffer, BufferSize ); } else { Radio->Rx( RX_TIMEOUT_VALUE ); } State = LOWPOWER; break; case RX_ERROR: // We have received a Packet with a CRC error, send reply as if packet was correct if( isMaster == true ) { // Send the next PING frame memcpy(Buffer, PingMsg, sizeof(PingMsg)); for( i = 4; i < BufferSize; i++ ) { Buffer[i] = i - 4; } //wait_ms( 10 ); Radio->Send( Buffer, BufferSize ); } else { // Send the next PONG frame memcpy(Buffer, PongMsg, sizeof(PongMsg)); for( i = sizeof(PongMsg); i < BufferSize; i++ ) { Buffer[i] = i - sizeof(PongMsg); } //wait_ms( 10 ); Radio->Send( Buffer, BufferSize ); } State = LOWPOWER; break; case TX_TIMEOUT: Radio->Rx( RX_TIMEOUT_VALUE ); State = LOWPOWER; break; case LOWPOWER: sleep(); break; default: State = LOWPOWER; break; } } } void OnTxDone(void *radio) { Radio->Sleep( ); State = TX; if (DEBUG_MESSAGE) dprintf("> OnTxDone"); } void OnRxDone(void *radio, uint8_t *payload, uint16_t size, int16_t rssi, int8_t snr) { Radio->Sleep( ); BufferSize = size; memcpy( Buffer, payload, BufferSize ); State = RX; if (DEBUG_MESSAGE) dprintf("> OnRxDone: RssiValue=%d dBm, SnrValue=%d", rssi, snr); dump("Data:", payload, size); } void OnTxTimeout(void *radio) { *led3 = 0; Radio->Sleep( ); State = TX_TIMEOUT; if(DEBUG_MESSAGE) dprintf("> OnTxTimeout"); } void OnRxTimeout(void *radio) { *led3 = 0; Radio->Sleep( ); Buffer[BufferSize-1] = 0; State = RX_TIMEOUT; if (DEBUG_MESSAGE) dprintf("> OnRxTimeout"); } void OnRxError(void *radio) { Radio->Sleep( ); State = RX_ERROR; if (DEBUG_MESSAGE) dprintf("> OnRxError"); } #endif int SX1276Comm(uint8_t *commData, bool mode, bool ack) { memcpy(Buffer, commData, sizeof(commData)); Radio->Send( Buffer, BufferSize ); wait_ms(500); /* switch( State ) { case RX: Radio->Rx( RX_TIMEOUT_VALUE ); //memcpy(Buffer, commData, sizeof(Buffer)); //ser->printf("Rx Data\n\r", Buffer[0], Buffer[1], Buffer[2], Buffer[3]); memcpy(Buffer, commData, sizeof(commData)); Radio->Send( Buffer, BufferSize ); //State = LOWPOWER; break; case TX: memcpy(Buffer, commData, sizeof(commData)); Radio->Send( Buffer, BufferSize ); //State = LOWPOWER; break; case RX_TIMEOUT: memcpy(Buffer, commData, sizeof(commData)); Radio->Send( Buffer, BufferSize ); Radio->Rx( RX_TIMEOUT_VALUE ); //State = LOWPOWER; break; case RX_ERROR: memcpy(Buffer, commData, sizeof(commData)); Radio->Send( Buffer, BufferSize ); wait_ms(10); Radio->Rx( RX_TIMEOUT_VALUE ); //State = LOWPOWER; break; case TX_TIMEOUT: memcpy(Buffer, commData, sizeof(commData)); Radio->Send( Buffer, BufferSize ); //State = LOWPOWER; break; case LOWPOWER: sleep(); break; default: //State = LOWPOWER; break; } */ }