E220-900T22D: Can’t set higher UART baud rate

[aleemont]

ResponseStatusContainer E220LoRaTransmitter::init()
{
    transmitter.begin();
    auto configurationStatus = this->getConfiguration();
    auto configuration = *(Configuration*)configurationStatus.data;
    configuration.ADDL = 0x03;
    configuration.ADDH = 0x00;
    configuration.CHAN = 23;
    configuration.SPED.uartBaudRate = UART_BPS_9600;
    configuration.SPED.airDataRate = AIR_DATA_RATE_111_625;
    configuration.SPED.uartParity = MODE_00_8N1;
    configuration.OPTION.subPacketSetting = SPS_200_00;
    configuration.OPTION.RSSIAmbientNoise = RSSI_AMBIENT_NOISE_DISABLED;
    configuration.OPTION.transmissionPower = POWER_22;
    configuration.TRANSMISSION_MODE.enableRSSI = RSSI_ENABLED;
    configuration.TRANSMISSION_MODE.fixedTransmission = FT_FIXED_TRANSMISSION;
    configuration.TRANSMISSION_MODE.enableLBT = LBT_DISABLED;
    configuration.TRANSMISSION_MODE.WORPeriod = WOR_2000_011;
    configurationStatus.close();
    return this->configure(configuration);
}

ResponseStatusContainer E220LoRaTransmitter::configure(Configuration configuration)
{
    this->transmitter.setMode(MODE_3_CONFIGURATION);
    auto response = transmitter.setConfiguration(configuration, WRITE_CFG_PWR_DWN_SAVE);
    this->transmitter.setMode(MODE_0_NORMAL);
    return ResponseStatusContainer(response.code, response.getResponseDescription());
}

—
This is how I configure my LoRa module. However, whenever I try to set:
configuration.SPED.uartBaudRate = UART_BPS_XXXXXXX;
my microcontroller (Arduino Nano ESP32) goes into kernel panic at the moment of setting the configuration. I don’t know if I’m doing something wrong—I am using HardwareSerial on digital pins 2 and 3, with the module connected in Normal Mode (M0 and M1 on D5 and D6). I use the following constructor:
E220LoRaTransmitter(HardwareSerial &serial, byte auxPin, byte m0Pin, byte m1Pin) : transmitter(&serial, auxPin, m0Pin, m1Pin, UART_BPS_RATE_XXXXXX) {};
(When XXXXXX is set to 9600 the module is correctly configured and works properly; with any other value I get the behavior described above).

The only “weird” thing I noticed is this method in your library:

RESPONSE_STATUS LoRa_E220::checkUARTConfiguration(MODE_TYPE mode)
{
    if (mode == MODE_3_PROGRAM && this->bpsRate != UART_BPS_RATE_9600) {
        return ERR_E220_WRONG_UART_CONFIG;
    }
    return E220_SUCCESS;
}

I don’t understand why the check on the baud rate should fail with any value other than 9600, but changing that 9600 to any other value causes the module to refuse configuration:

ResponseStatus LoRa_E220::setConfiguration(Configuration configuration, PROGRAM_COMMAND saveType)
{
    ResponseStatus rc;
    rc.code = checkUARTConfiguration(MODE_3_PROGRAM);
    if (rc.code != E220_SUCCESS)
        return rc;
    MODE_TYPE prevMode = this->mode;
    rc.code = this->setMode(MODE_3_PROGRAM);
    if (rc.code != E220_SUCCESS)
        return rc;
    // this->writeProgramCommand(saveType, REG_ADDRESS_CFG);
    // configuration.HEAD = saveType;
    configuration.COMMAND = saveType;
    configuration.STARTING_ADDRESS = REG_ADDRESS_CFG;
    configuration.LENGHT = PL_CONFIGURATION;
    rc.code = this->sendStruct((uint8_t*)&configuration, sizeof(Configuration));
    if (rc.code != E220_SUCCESS) {
        this->setMode(prevMode);
        return rc;
    }
    rc.code = this->receiveStruct((uint8_t*)&configuration, sizeof(Configuration));
#ifdef LoRa_E220_DEBUG
    this->printParameters((Configuration *)&configuration);
#endif
    rc.code = this->setMode(prevMode);
    if (rc.code != E220_SUCCESS)
        return rc;
    if (WRONG_FORMAT == ((Configuration*)&configuration)->COMMAND) {
        rc.code = ERR_E220_WRONG_FORMAT;
    }
    if (RETURNED_COMMAND != ((Configuration*)&configuration)->COMMAND ||
        REG_ADDRESS_CFG != ((Configuration*)&configuration)->STARTING_ADDRESS ||
        PL_CONFIGURATION != ((Configuration*)&configuration)->LENGHT) {
        rc.code = ERR_E220_HEAD_NOT_RECOGNIZED;
    }
    return rc;
}

• This topic was modified 7 months, 3 weeks ago by aleemont.
• This topic was modified 7 months, 3 weeks ago by aleemont.
• This topic was modified 7 months, 3 weeks ago by aleemont.
• This topic was modified 7 months, 3 weeks ago by aleemont.
• This topic was modified 7 months, 3 weeks ago by aleemont.
• This topic was modified 7 months, 3 weeks ago by aleemont.
• This topic was modified 7 months, 3 weeks ago by aleemont.
• This topic was modified 7 months, 1 week ago by Renzo Mischianti. Reason: Reformat

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