Enthernet Code
DIIDevHeads IoT Integration Server
•Created by Sterling on 8/6/2024 in #firmware-and-baremetal
How to Receive Variable-Length Data Over RS485 Using HAL_UART_Receive_IT on STM32F4?
Hello @Sterling to handle variable-length data sequences, you can use a state machine approach within your
HAL_UART_RxCpltCallback function. The idea is to first receive the header of the frame which includes the Start byte, Slave Addr, and Byte count. Once you have the Byte count, you can set up the UART to receive the remaining bytes, let me know if u need code examples to understand it better6 replies