amintlk
Member level 1
hi all
i use max485 for rs485 communication ... it works correctly but i have little problem ... i tied RE and DE to one of microcontroller pin to control transmitt and receive mode .. and pin 1 called "RO" is for receive data over the rs485 and it's idle high and it connect to RX pin of microcontroller .. but when i switch to transmitt mode for send data "RO" pin is going to idle low until max485 switch to Receive mode again .. what can i do for hold "RO" in idle high always ???
thanks
i use max485 for rs485 communication ... it works correctly but i have little problem ... i tied RE and DE to one of microcontroller pin to control transmitt and receive mode .. and pin 1 called "RO" is for receive data over the rs485 and it's idle high and it connect to RX pin of microcontroller .. but when i switch to transmitt mode for send data "RO" pin is going to idle low until max485 switch to Receive mode again .. what can i do for hold "RO" in idle high always ???
thanks