1. Baud rate setting is incorrect: serial debugging assistant and receiving device need to set the same baud rate. If the baud rate is set incorrectly, the data sent and received will be inconsistent. Please make sure to use the correct baud rate setting to send and receive data.
2. Incorrect data format: If the data formats of the sending and receiving devices are inconsistent, the sent data may be misinterpreted at the receiving end. Please ensure that the data formats of the sending and receiving devices are consistent, including data bits, stop bits, parity, data flow control, etc.
3. Software Settings: Some serial debugging assistant software will add line breaks or carriage returns to the data sent. If the receiving device can't handle these control characters correctly, the data sent and received will be inconsistent.
4. Signal interference: Because serial communication is transmitted through digital signal lines, interference signals may lead to the loss of serial data, thus affecting the consistency of sending and receiving data. Please check whether the equipment is in a noisy environment. If there is a noisy environment, measures such as shielding, isolation and filtering should be taken to reduce interference.
If the above problems can't solve the problem, you can consider replacing the serial port or other port equipment, reconnecting to the computer port, and troubleshooting the hardware.