I have a custom board which converts the UART signal to RS-232, RS-422 or RS-485. With RS-232 it is possible to use hardware flow control to prevent data loss. But there is no such mechanism for RS-422 and RS-485. How to ensure data integrity when communicating using RS-422 or RS-485?
The transceiver on this board is SP338. UART1_TX, UART1_RX, UART1_RTS and UART1_CTS are connected respectively to L3, L2, L7 and L8 of the transceiver. Can you please explain how to connect RTS to DE and RE?