Diff: SX1276GenericPingPong/GenericPingPong.cpp

Revision:

0:c43b6919ae15

Child:

1:65d602e2d746

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/SX1276GenericPingPong/GenericPingPong.cpp	Wed May 10 08:48:46 2017 +0000
@@ -0,0 +1,422 @@
+/*
+ * 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          LORA_BANKWIDTH_125kHz
+#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)
+    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
+    if (LORA_BANDWIDTH == LORA_BANKWIDTH_125kHz) {
+        dprintf("Bandwidth: %d kHz", 125);
+    } else if (LORA_BANDWIDTH == LORA_BANKWIDTH_250kHz) {
+        dprintf("Bandwidth: %d kHz",  250);
+    } else if (LORA_BANDWIDTH == LORA_BANKWIDTH_500kHz) {
+        dprintf("Bandwidth: %d kHz",  500);
+    } else {
+        dprintf("Unkown Bandwidth: %d kHz",  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;
+    Radio->Init( &RadioEvents );
+    
+    // verify the connection with the board
+    while( Radio->Read( REG_VERSION ) == 0x00  )
+    {
+        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:
+            break;
+        default:
+            State = LOWPOWER;
+            break;
+        }    
+    }
+}
+
+void OnTxDone( void )
+{
+    Radio->Sleep( );
+    State = TX;
+    if (DEBUG_MESSAGE)
+        dprintf("> OnTxDone");
+}
+
+void OnRxDone( 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 )
+{
+    *led3 = 0;
+    Radio->Sleep( );
+    State = TX_TIMEOUT;
+    if(DEBUG_MESSAGE)
+        dprintf("> OnTxTimeout");
+}
+
+void OnRxTimeout( void )
+{
+    *led3 = 0;
+    Radio->Sleep( );
+    Buffer[BufferSize-1] = 0;
+    State = RX_TIMEOUT;
+    if (DEBUG_MESSAGE)
+        dprintf("> OnRxTimeout");
+}
+
+void OnRxError( void )
+{
+    Radio->Sleep( );
+    State = RX_ERROR;
+    if (DEBUG_MESSAGE)
+        dprintf("> OnRxError");
+}
+
+#endif