How to Set Up Point-to-Point Communication Between Two LoRa-E5 Mini Modules?

Products & Technology LoRa
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67

It never returns, it’s defined inside the same class (SX126x.cpp)

int16_t SX126x::reset(bool verify)
{
  // run the reset sequence
  RADIOLIB_DEBUG_BASIC_PRINTLN("RESET call");
  this->mod->hal->pinMode(this->mod->getRst(), this->mod->hal->GpioModeOutput);
  this->mod->hal->digitalWrite(this->mod->getRst(), this->mod->hal->GpioLevelLow);
  this->mod->hal->delay(1);
  this->mod->hal->digitalWrite(this->mod->getRst(), this->mod->hal->GpioLevelHigh);
  RADIOLIB_DEBUG_BASIC_PRINTLN("RESET pins");

  // return immediately when verification is disabled
  if (!verify)
  {
    return (RADIOLIB_ERR_NONE);
  }

  RADIOLIB_DEBUG_BASIC_PRINTLN("RESET verify true");

  // set mode to standby - SX126x often refuses first few commands after reset
  RadioLibTime_t start = this->mod->hal->millis();
  while (true)
  {
    RADIOLIB_DEBUG_BASIC_PRINTLN("RESET loop");
    // try to set mode to standby
    int16_t state = standby();
    if (state == RADIOLIB_ERR_NONE)
    {
      // standby command successful
      return (RADIOLIB_ERR_NONE);
    }

    RADIOLIB_DEBUG_BASIC_PRINTLN("RESET standby failed");

    // standby command failed, check timeout and try again
    if (this->mod->hal->millis() - start >= 1000)
    {
      RADIOLIB_DEBUG_BASIC_PRINTLN("RESET timeout");
      // timed out, possibly incorrect wiring
      return (state);
    }

    // wait a bit to not spam the module
    this->mod->hal->delay(10);
    RADIOLIB_DEBUG_BASIC_PRINTLN("RESET delay");
  }
  RADIOLIB_DEBUG_BASIC_PRINTLN("RESET end");
}