Ward Mattar
This is code is part of a Technion course project in advanced IoT, implementing a device to receive and present sensors data from a Formula racing car built by students at Technion - Israel Institute of Technology.
Fork of
DISCO-L072CZ-LRWAN1_LoRa_PingPong
by 
ST
This is code is part of a Technion course project in advanced IoT, implementing a device to receive sensors data from another L072CZ-LRWAN1 installed on a Formula racing car (built by students at Technion - Israel Institute of Technology), and sends it to a GUI presenting the data (GUI project: github.com/ward-mattar/TechnionFormulaGUI).
How to install
- Create an account on Mbed: https://os.mbed.com/account/signup/
- Import project into Compiler
- In the Program Workspace select "Formula_Nucleo_Receiver"
- Select a Platform like so:
- Click button at top-left
- Add Board
- Search "NUCLEO F103RB" and then "Add to your Mbed Compiler"
- Finally click "Compile", if the build was successful, the binary would download automatically
- To install it on device simply plug it in to a PC, open device drive and drag then drop binary file in it
Diff: SX1276GenericPingPong/GenericPingPong.cpp
- Revision:
- 12:046346a16ff4
- Parent:
- 11:9d7409ebfa57
--- a/SX1276GenericPingPong/GenericPingPong.cpp Fri Aug 18 07:45:44 2017 +0000
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,414 +0,0 @@
-/*
- * This file contains a copy of the master content sx1276PingPong
- * with adaption for the SX1276Generic environment
- * (c) 2017 Helmut Tschemernjak
- * 30826 Garbsen (Hannover) Germany
- */
-
-#include "mbed.h"
-#include "PinMap.h"
-#include "GenericPingPong.h"
-#include "sx1276-mbed-hal.h"
-#include "main.h"
-
-#ifdef FEATURE_LORA
-
-/* Set this flag to '1' to display debug messages on the console */
-#define DEBUG_MESSAGE 1
-
-/* 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 RF_FREQUENCY_868_1 // Hz
-#define TX_OUTPUT_POWER 14 // 14 dBm
-
-#if USE_MODEM_LORA == 1
-
-#define LORA_BANDWIDTH 125000 // LoRa default, details in SX1276::BandwidthMap
-#define LORA_SPREADING_FACTOR LORA_SF7
-#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 3500 // in ms
-
-//#define BUFFER_SIZE 32 // Define the payload size here
-#define BUFFER_SIZE 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 PongMsg[] = { 0xff, 0xff, 0x00, 0x00, 'P', 'O', 'N', 'G'};// "PONG";
-
-uint16_t BufferSize = BUFFER_SIZE;
-uint8_t *Buffer;
-
-DigitalOut *led3;
-
-
-int SX1276PingPong()
-{
-#if( defined ( TARGET_KL25Z ) || defined ( TARGET_LPC11U6X ) )
- DigitalOut *led = new DigitalOut(LED2);
-#elif defined(TARGET_NUCLEO_L073RZ) || defined(TARGET_DISCO_L072CZ_LRWAN1)
- 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
-
- uint8_t i;
- bool 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 Ping-Pong loop");
-
-
- Radio->Rx( RX_TIMEOUT_VALUE );
-
- 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, void *userThisPtr, void *userData)
-{
- Radio->Sleep( );
- State = TX;
- if (DEBUG_MESSAGE)
- dprintf("> OnTxDone");
-}
-
-void OnRxDone(void *radio, void *userThisPtr, void *userData, 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, void *userThisPtr, void *userData)
-{
- *led3 = 0;
- Radio->Sleep( );
- State = TX_TIMEOUT;
- if(DEBUG_MESSAGE)
- dprintf("> OnTxTimeout");
-}
-
-void OnRxTimeout(void *radio, void *userThisPtr, void *userData)
-{
- *led3 = 0;
- Radio->Sleep( );
- Buffer[BufferSize-1] = 0;
- State = RX_TIMEOUT;
- if (DEBUG_MESSAGE)
- dprintf("> OnRxTimeout");
-}
-
-void OnRxError(void *radio, void *userThisPtr, void *userData)
-{
- Radio->Sleep( );
- State = RX_ERROR;
- if (DEBUG_MESSAGE)
- dprintf("> OnRxError");
-}
-
-#endif