Yifei Liu
pING
Fork of
SX1276PingPong
by 
Semtech
Diff: main.cpp
- Revision:
- 16:c790e9194eba
- Parent:
- 15:8b35dd7c1436
--- a/main.cpp Mon Apr 24 09:29:45 2017 +0000
+++ b/main.cpp Tue Jul 18 14:49:00 2017 +0000
@@ -10,28 +10,28 @@
#define USE_MODEM_LORA 1
#define USE_MODEM_FSK !USE_MODEM_LORA
-#define RF_FREQUENCY 868000000 // Hz
-#define TX_OUTPUT_POWER 14 // 14 dBm
+#define RF_FREQUENCY 904500000 // Hz
+#define TX_OUTPUT_POWER 10 // units: dBm
#if USE_MODEM_LORA == 1
- #define LORA_BANDWIDTH 2 // [0: 125 kHz,
+ #define LORA_BANDWIDTH 0 // [0: 125 kHz,
// 1: 250 kHz,
// 2: 500 kHz,
// 3: Reserved]
- #define LORA_SPREADING_FACTOR 7 // [SF7..SF12]
+ #define LORA_SPREADING_FACTOR 10 // [SF7..SF12]
#define LORA_CODINGRATE 1 // [1: 4/5,
// 2: 4/6,
// 3: 4/7,
// 4: 4/8]
- #define LORA_PREAMBLE_LENGTH 8 // Same for Tx and Rx
+ #define LORA_PREAMBLE_LENGTH 16 // 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
-
+ #define LORA_CRC_ENABLED false
+
#elif USE_MODEM_FSK == 1
#define FSK_FDEV 25000 // Hz
@@ -40,19 +40,19 @@
#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
-
+ #define FSK_CRC_ENABLED false
+
#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 RX_TIMEOUT_VALUE 500000 // in us
+#define BUFFER_SIZE 8 // 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;
@@ -86,8 +86,8 @@
*/
SX1276MB1xAS Radio( NULL );
-const uint8_t PingMsg[] = "PING";
-const uint8_t PongMsg[] = "PONG";
+const uint8_t PingMsg[] = "BBBBBBBB";
+const uint8_t PongMsg[] = "AAAAAAAA";
uint16_t BufferSize = BUFFER_SIZE;
uint8_t Buffer[BUFFER_SIZE];
@@ -95,11 +95,11 @@
int16_t RssiValue = 0.0;
int8_t SnrValue = 0.0;
-int main( void )
+int main()
{
uint8_t i;
bool isMaster = true;
-
+
debug( "\n\n\r SX1276 Ping Pong Demo Application \n\n\r" );
// Initialize Radio driver
@@ -109,200 +109,65 @@
RadioEvents.TxTimeout = OnTxTimeout;
RadioEvents.RxTimeout = OnRxTimeout;
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( RF_FREQUENCY );
#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, 2000 );
-
+ LORA_CRC_ENABLED, LORA_FHSS_ENABLED, LORA_NB_SYMB_HOP,
+ LORA_IQ_INVERSION_ON, 2000000 );
+
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, 2000 );
-
+ FSK_CRC_ENABLED, 0, 0, 0, 2000000 );
+
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 )
- {
- case RX:
- if( isMaster == true )
- {
- if( BufferSize > 0 )
- {
- if( strncmp( ( const char* )Buffer, ( const char* )PongMsg, 4 ) == 0 )
- {
- led = !led;
- debug( "...Pong\r\n" );
- // Send the next PING frame
- strcpy( ( char* )Buffer, ( char* )PingMsg );
- // We fill the buffer with numbers for the payload
- for( i = 4; i < BufferSize; i++ )
- {
- Buffer[i] = i - 4;
- }
- wait_ms( 10 );
- Radio.Send( Buffer, BufferSize );
- }
- else if( strncmp( ( const char* )Buffer, ( const char* )PingMsg, 4 ) == 0 )
- { // A master already exists then become a slave
- debug( "...Ping\r\n" );
- led = !led;
- isMaster = false;
- // Send the next PONG frame
- strcpy( ( char* )Buffer, ( char* )PongMsg );
- // We fill the buffer with numbers for the payload
- for( i = 4; i < BufferSize; i++ )
- {
- Buffer[i] = i - 4;
- }
- 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( strncmp( ( const char* )Buffer, ( const char* )PingMsg, 4 ) == 0 )
- {
- led = !led;
- 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
- for( i = 4; i < BufferSize; i++ )
- {
- Buffer[i] = i - 4;
- }
- 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;
- if( isMaster == true )
- {
- debug( "Ping...\r\n" );
- }
- else
- {
- debug( "Pong...\r\n" );
- }
- Radio.Rx( RX_TIMEOUT_VALUE );
- State = LOWPOWER;
- break;
- case RX_TIMEOUT:
- if( isMaster == true )
- {
- // Send the next PING frame
- strcpy( ( char* )Buffer, ( char* )PingMsg );
- for( i = 4; i < BufferSize; i++ )
- {
- Buffer[i] = i - 4;
- }
- 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
- strcpy( ( char* )Buffer, ( char* )PingMsg );
- for( i = 4; i < BufferSize; i++ )
- {
- Buffer[i] = i - 4;
- }
- wait_ms( 10 );
- Radio.Send( Buffer, BufferSize );
- }
- else
- {
- // Send the next PONG frame
- strcpy( ( char* )Buffer, ( char* )PongMsg );
- for( i = 4; i < BufferSize; i++ )
- {
- Buffer[i] = i - 4;
- }
- 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;
- }
+ strcpy( ( char* )Buffer, ( char* )PingMsg );
+ Radio.Send( Buffer, BufferSize );
}
}
@@ -313,15 +178,20 @@
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.Sleep( );
BufferSize = size;
- memcpy( Buffer, payload, BufferSize );
+ memcpy(Buffer, payload, BufferSize);
+ //printf("Payload length = %d \n\r",BufferSize);
+ //printf("First 8 bytes -- %d %d %d %d %d %d %d %d\n\r", payload[0], payload[1], payload[2], payload[3], payload[4], payload[5], payload[6], payload[7]);
RssiValue = rssi;
SnrValue = snr;
State = RX;
debug_if( DEBUG_MESSAGE, "> OnRxDone\n\r" );
+ printf("SINR Value = %d \n\r",SnrValue);
+ printf("RSSI Value = %d \n\r",RssiValue);
+
}
void OnTxTimeout( void )
@@ -334,9 +204,10 @@
void OnRxTimeout( void )
{
Radio.Sleep( );
- Buffer[BufferSize] = 0;
+ Buffer[ BufferSize ] = 0;
State = RX_TIMEOUT;
debug_if( DEBUG_MESSAGE, "> OnRxTimeout\n\r" );
+
}
void OnRxError( void )
@@ -344,4 +215,4 @@
Radio.Sleep( );
State = RX_ERROR;
debug_if( DEBUG_MESSAGE, "> OnRxError\n\r" );
-}
+}
\ No newline at end of file
