I have made a simmilar post yesterday but have noticed something bigger today. Even the normal ping pong example without making it faster gets stuck in rx mode within a minute? Just opened ping pong example changed the frequency and ran it. Both boards are in rx mode rather than one in rx mode and one in tx mode. Please help i need this example to work since i have made a more complicated program based on this and it neither works.
Board heltec esp32 lora v2. Frequency 433-510.
then they both just stopped transmitting because both boards are expecting a message? Thats just my assumption.
#include "LoRaWan_APP.h"
#include "Arduino.h"
#define RF_FREQUENCY
433000000 // Hz
#define TX_OUTPUT_POWER
5 // dBm
#define LORA_BANDWIDTH 0 // [0: 125 kHz,
// 1: 250 kHz,
// 2: 500 kHz,
// 3: Reserved]
#define LORA_SPREADING_FACTOR 7 // [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_SYMBOL_TIMEOUT 0 // Symbols
#define LORA_FIX_LENGTH_PAYLOAD_ON false
#define LORA_IQ_INVERSION_ON false
#define RX_TIMEOUT_VALUE 1000
#define BUFFER_SIZE 30 // Define the payload size here
char txpacket[BUFFER_SIZE];
char rxpacket[BUFFER_SIZE];
static RadioEvents_t RadioEvents;
void OnTxDone( void );
void OnTxTimeout( void );
void OnRxDone( uint8_t *payload, uint16_t size, int16_t rssi, int8_t snr );
typedef enum
{
LOWPOWER,
STATE_RX,
STATE_TX
}States_t;
int16_t txNumber;
States_t state;
bool sleepMode = false;
int16_t Rssi,rxSize;
void setup() {
Serial.begin(115200);
Mcu.begin();
txNumber=0;
Rssi=0;
RadioEvents.TxDone = OnTxDone;
RadioEvents.TxTimeout = OnTxTimeout;
RadioEvents.RxDone = OnRxDone;
Radio.Init( &RadioEvents );
Radio.SetChannel( RF_FREQUENCY );
Radio.SetTxConfig( MODEM_LORA, TX_OUTPUT_POWER, 0, LORA_BANDWIDTH,
LORA_SPREADING_FACTOR, LORA_CODINGRATE,
LORA_PREAMBLE_LENGTH, LORA_FIX_LENGTH_PAYLOAD_ON,
true, 0, 0, LORA_IQ_INVERSION_ON, 3000 );
Radio.SetRxConfig( MODEM_LORA, LORA_BANDWIDTH, LORA_SPREADING_FACTOR,
LORA_CODINGRATE, 0, LORA_PREAMBLE_LENGTH,
LORA_SYMBOL_TIMEOUT, LORA_FIX_LENGTH_PAYLOAD_ON,
0, true, 0, 0, LORA_IQ_INVERSION_ON, true );
state=STATE_TX;
}
void loop()
{
switch(state)
{
case STATE_TX:
delay(1000);
txNumber++;
sprintf(txpacket,"hello %d, Rssi : %d",txNumber,Rssi);
Serial.printf("\r\nsending packet \"%s\" , length %d\r\n",txpacket, strlen(txpacket));
Radio.Send( (uint8_t *)txpacket, strlen(txpacket) );
state=LOWPOWER;
break;
case STATE_RX:
Serial.println("into RX mode");
Radio.Rx( 0 );
state=LOWPOWER;
break;
case LOWPOWER:
Radio.IrqProcess( );
break;
default:
break;
}
}
void OnTxDone( void )
{
Serial.print("TX done......");
state=STATE_RX;
}
void OnTxTimeout( void )
{
Radio.Sleep( );
Serial.print("TX Timeout......");
state=STATE_TX;
}
void OnRxDone( uint8_t *payload, uint16_t size, int16_t rssi, int8_t snr )
{
Rssi=rssi;
rxSize=size;
memcpy(rxpacket, payload, size );
rxpacket[size]='\0';
Radio.Sleep( );
Serial.printf("\r\nreceived packet \"%s\" with Rssi %d , length %d\r\n",rxpacket,Rssi,rxSize);
Serial.println("wait to send next packet");
state=STATE_TX;
}