I (737) RA01S: ReadCommand: CMD=0x12 I (737) RA01S: DataIn:d2 I (747) RA01S: DataIn:00 I (747) RA01S: DataIn:00

[niubbbbbbbb]

I'm sorry to bother you again, but I have a question. Why can't I receive messages after setting successfully? My other Lora is sending messages normally. ![Uploading IMG_20221023_140842(1).jpg…]()

[niubbbbbbbb]

[nopnop2002]

RA01S use 410-525Mhz. It can't comunicate with 915MHz LoRa.

[niubbbbbbbb]

I found the reason. It may be that the initialization of iqConfigCurrent needs to be modified due to the manufacturer's secondary modification. Now I can send and receive. Thank you for sharing the code and answering

[nopnop2002]

Are you using AI-Thinker RA-01S?

It may be that the initialization of iqConfigCurrent needs to be modified due to the manufacturer's secondary modification.

i want to know your modify.

[niubbbbbbbb]

void FixInvertedIQ(uint8_t iqConfig) { // fixes IQ configuration for inverted IQ // see SX1262/SX1268 datasheet, chapter 15 Known Limitations, section 15.4 for details // When exchanging LoRa packets with inverted IQ polarity, some packet losses may be observed for longer packets. // Workaround: Bit 2 at address 0x0736 must be set to: // “0” when using inverted IQ polarity (see the SetPacketParam(...) command) // “1” when using standard IQ polarity

// read current IQ configuration
uint8_t iqConfigCurrent = 0;
ReadRegister(SX126X_REG_IQ_POLARITY_SETUP, &iqConfigCurrent, 1); // 0x0736

set correct IQ configuration
// if(iqConfig == SX126X_LORA_IQ_STANDARD) {   ///< last
//  iqConfigCurrent &= 0xFB;
// } else {
//  iqConfigCurrent |= 0x04;
// }

if(iqConfig == SX126X_LORA_IQ_STANDARD) {   ///< now
    iqConfigCurrent &= 0xFB;
} else {
    iqConfigCurrent |= 0x04;
}

// iqConfigCurrent = iqConfigCurrent | ( 1 << 2 );

// update with the new value
WriteRegister(SX126X_REG_IQ_POLARITY_SETUP, &iqConfigCurrent, 1); // 0x0736

}

[niubbbbbbbb]

I use RA-01SH, that is, SX1262

[nopnop2002]

This is original code.

I think Nothing changed.

void FixInvertedIQ(uint8_t iqConfig)
{
    // fixes IQ configuration for inverted IQ
    // see SX1262/SX1268 datasheet, chapter 15 Known Limitations, section 15.4 for details
    // When exchanging LoRa packets with inverted IQ polarity, some packet losses may be observed for longer packets.
    // Workaround: Bit 2 at address 0x0736 must be set to:
    //  0”when using inverted IQ polarity (see the SetPacketParam(...) command)
    //  1”when using standard IQ polarity

    // read current IQ configuration
    uint8_t iqConfigCurrent = 0;
    ReadRegister(SX126X_REG_IQ_POLARITY_SETUP, &iqConfigCurrent, 1); // 0x0736

    // set correct IQ configuration
    if(iqConfig == SX126X_LORA_IQ_STANDARD) {
        iqConfigCurrent &= 0xFB;
    } else {
        iqConfigCurrent |= 0x04;
    }

    // update with the new value
    WriteRegister(SX126X_REG_IQ_POLARITY_SETUP, &iqConfigCurrent, 1); // 0x0736
}

[niubbbbbbbb]

Sorry,I write it wrongly.If (iqConfig==SX126X_LORA_IQ_STANDARD) is replaced by if (iqConfig==SX126X_LORA_IQ_INVERTED)

[nopnop2002]

If (iqConfig==SX126X_LORA_IQ_STANDARD) is replaced by if (iqConfig==SX126X_LORA_IQ_INVERTED)

It seems to be a bug in the original code.

I'll fix it.

Thank you for reporting.