Why does the message "BaudRate Synchronization Timeout" appear?
Possible Cause:
1.The host software's programming mode does not match the hardware configuration.
2.The device has not entered programming mode.
Solution:
1.Check if the DIP switch settings are correct.
DIP switch | Select the communication channel between the sensor and the host (UART or I²C): • For I²C (Default) : Set pins 1 & 2 to OFF, and pins 3 & 4 to ON. |

2.Try re-entering programming mode.
Procedure: Power off the development board, press and hold the UPD button, power the board back on, and then release the UPD button.
Technical Documentation
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