RK3399 Debug Serial port

dilshan · Post time 2018-12-17 14:20:44

Hi, What is the recommended voltage for RK3399 debug serial port? Can I use 3.3V or any 5V USB to UART bridge with this port or do I need to use 1.8V UART bridge with this port?

dilshan · Post time 2018-12-20 17:56:51

By looking at the schematics and RK3399 datasheet it looks like 3.3V UART bridge is working with this board.

UPDATE: Tested CP2104 UART in 3.3V without any issues.

yaron · Post time 2019-8-1 17:07:29

dilshan replied at 2018-12-20 12:56
By looking at the schematics and RK3399 datasheet it looks like 3.3V UART bridge is working with thi ...

Can you please elaborate on how did you connect the cables?

igorpec · Post time 2019-8-1 17:13:20

Make sure you use correct baud rate 1500000