Semtech
SX1276 Ping Pong FHSS Demo Application
Ping-Pong demo application using FHSS (Frequency Hoping Spread Spectrum) between two SX1276MB1xAs demo board.
Application demonstrating simple Tx/Rx between two boards. By default, each board starts as a "master" and will transmit a "Ping" message, and then wait for an answer. The first board receiving a "Ping" message will become a slave and answer the "master" with a "Pong". The Ping-Pong is then started...
Diff: main.cpp
- Revision:
- 6:235854d4b0c4
- Parent:
- 4:cd44376a1408
diff -r b07ae0f2ae05 -r 235854d4b0c4 main.cpp
--- a/main.cpp Thu Nov 26 17:01:16 2015 +0000
+++ b/main.cpp Mon Apr 24 13:23:42 2017 +0000
@@ -31,7 +31,7 @@
#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
@@ -41,18 +41,18 @@
#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 3500000 // in us
-#define BUFFER_SIZE 32 // Define the payload size here [min:1 max:255]
+#define RX_TIMEOUT_VALUE 3500 // in ms
+#define BUFFER_SIZE 32 // Define the payload size here
#if( defined ( TARGET_KL25Z ) || defined ( TARGET_LPC11U6X ) )
-DigitalOut led(LED2);
+DigitalOut led( LED2 );
#else
-DigitalOut led(LED1);
+DigitalOut led( LED1 );
#endif
/*
@@ -62,14 +62,14 @@
{
LOWPOWER = 0,
IDLE,
-
+
RX,
RX_TIMEOUT,
RX_ERROR,
-
+
TX,
TX_TIMEOUT,
-
+
CAD,
CAD_DONE
}AppStates_t;
@@ -95,11 +95,11 @@
int16_t RssiValue = 0.0;
int8_t SnrValue = 0.0;
-int main()
+int main( void )
{
uint8_t i;
bool isMaster = true;
-
+
debug( "\n\n\r SX1276 Ping Pong Demo Application \n\n\r" );
// Initialize Radio driver
@@ -110,61 +110,61 @@
RadioEvents.RxTimeout = OnRxTimeout;
RadioEvents.FhssChangeChannel = OnFhssChangeChannel;
Radio.Init( &RadioEvents );
-
+
// verify the connection with the board
while( Radio.Read( REG_VERSION ) == 0x00 )
{
debug( "Radio could not be detected!\n\r", NULL );
wait( 1 );
}
-
- debug_if( ( DEBUG_MESSAGE & ( Radio.DetectBoardType( ) == SX1276MB1LAS ) ) , "\n\r > Board Type: SX1276MB1LAS < \n\r" );
- debug_if( ( DEBUG_MESSAGE & ( Radio.DetectBoardType( ) == SX1276MB1MAS ) ) , "\n\r > Board Type: SX1276MB1MAS < \n\r" );
-
+
+ debug_if( ( DEBUG_MESSAGE & ( Radio.DetectBoardType( ) == SX1276MB1LAS ) ), "\n\r > Board Type: SX1276MB1LAS < \n\r" );
+ debug_if( ( DEBUG_MESSAGE & ( Radio.DetectBoardType( ) == SX1276MB1MAS ) ), "\n\r > Board Type: SX1276MB1MAS < \n\r" );
+
Radio.SetChannel( HoppingFrequencies[0] );
#if USE_MODEM_LORA == 1
-
- debug_if( LORA_FHSS_ENABLED, "\n\n\r > LORA FHSS Mode < \n\n\r");
- debug_if( !LORA_FHSS_ENABLED, "\n\n\r > LORA Mode < \n\n\r");
+
+ debug_if( LORA_FHSS_ENABLED, "\n\n\r > LORA FHSS Mode < \n\n\r" );
+ debug_if( !LORA_FHSS_ENABLED, "\n\n\r > LORA Mode < \n\n\r" );
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, 4000000 );
-
+ LORA_CRC_ENABLED, LORA_FHSS_ENABLED, LORA_NB_SYMB_HOP,
+ LORA_IQ_INVERSION_ON, 4000 );
+
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_CRC_ENABLED, LORA_FHSS_ENABLED, LORA_NB_SYMB_HOP,
LORA_IQ_INVERSION_ON, true );
-
+
#elif USE_MODEM_FSK == 1
- debug("\n\n\r > FSK Mode < \n\n\r");
+ debug("\n\n\r > FSK Mode < \n\n\r" );
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, 3000000 );
-
+ FSK_CRC_ENABLED, 0, 0, 0, 3000 );
+
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
-
- debug_if( DEBUG_MESSAGE, "Starting Ping-Pong loop\r\n" );
-
+
+ debug_if( DEBUG_MESSAGE, "Starting Ping-Pong loop\r\n" );
+
led = 0;
-
+
Radio.Rx( RX_TIMEOUT_VALUE );
-
+
while( 1 )
{
switch( State )
@@ -178,14 +178,14 @@
{
led = !led;
debug( "...Pong\r\n" );
- // Send the next PING frame
+ // Send the next PING frame
strcpy( ( char* )Buffer, ( char* )PingMsg );
- // We fill the buffer with numbers for the payload
+ // We fill the buffer with numbers for the payload
for( i = 4; i < BufferSize; i++ )
{
Buffer[i] = i - 4;
}
- wait_ms( 10 );
+ wait_ms( 10 );
Radio.Send( Buffer, BufferSize );
}
else if( strncmp( ( const char* )Buffer, ( const char* )PingMsg, 4 ) == 0 )
@@ -193,21 +193,21 @@
debug( "...Ping\r\n" );
led = !led;
isMaster = false;
- // Send the next PONG frame
+ // Send the next PONG frame
strcpy( ( char* )Buffer, ( char* )PongMsg );
- // We fill the buffer with numbers for the payload
+ // We fill the buffer with numbers for the payload
for( i = 4; i < BufferSize; i++ )
{
Buffer[i] = i - 4;
}
- wait_ms( 10 );
+ 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
@@ -220,25 +220,25 @@
debug( "...Ping\r\n" );
// Send the reply to the PING string
strcpy( ( char* )Buffer, ( char* )PongMsg );
- // We fill the buffer with numbers for the payload
+ // We fill the buffer with numbers for the payload
for( i = 4; i < BufferSize; i++ )
{
Buffer[i] = i - 4;
}
- wait_ms( 10 );
+ 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:
- led = !led;
+ case TX:
+ led = !led;
if( isMaster == true )
{
debug( "Ping...\r\n" );
@@ -259,13 +259,13 @@
{
Buffer[i] = i - 4;
}
- wait_ms( 10 );
+ wait_ms( 10 );
Radio.Send( Buffer, BufferSize );
}
else
{
- Radio.Rx( RX_TIMEOUT_VALUE );
- }
+ Radio.Rx( RX_TIMEOUT_VALUE );
+ }
State = LOWPOWER;
break;
case RX_ERROR:
@@ -278,7 +278,7 @@
{
Buffer[i] = i - 4;
}
- wait_ms( 10 );
+ wait_ms( 10 );
Radio.Send( Buffer, BufferSize );
}
else
@@ -289,7 +289,7 @@
{
Buffer[i] = i - 4;
}
- wait_ms( 10 );
+ wait_ms( 10 );
Radio.Send( Buffer, BufferSize );
}
State = LOWPOWER;
@@ -303,7 +303,7 @@
default:
State = LOWPOWER;
break;
- }
+ }
}
}
@@ -315,7 +315,7 @@
debug_if( DEBUG_MESSAGE, "> OnTxDone\n\r" );
}
-void OnRxDone( uint8_t *payload, uint16_t size, int16_t rssi, int8_t snr)
+void OnRxDone( uint8_t *payload, uint16_t size, int16_t rssi, int8_t snr )
{
Radio.SetChannel( HoppingFrequencies[0] );
Radio.Sleep( );
@@ -339,7 +339,7 @@
{
Radio.SetChannel( HoppingFrequencies[0] );
Radio.Sleep( );
- Buffer[ BufferSize ] = 0;
+ Buffer[BufferSize] = 0;
State = RX_TIMEOUT;
debug_if( DEBUG_MESSAGE, "> OnRxTimeout\n\r" );
}
@@ -355,5 +355,5 @@
void OnFhssChangeChannel( uint8_t channelIndex )
{
Radio.SetChannel( HoppingFrequencies[channelIndex] );
- debug_if( DEBUG_MESSAGE, "F%d-", channelIndex);
+ debug_if( DEBUG_MESSAGE, "F%d-", channelIndex );
}