[CLOSED] uart write garbled character

[ajie_dirgantara]

I've got problem with simple UART write,

when I try

ser = pyb.UART(2, 9600)
ser.write("test")

on my pyboard, and then connect tx and rx to the PC and open it using hyperteminal,

I've got garbled message :

(hex) 51 53 74 04 (str) QSt.


I am sure using correct uart settings (9600, 8-n-1).

any ideas?

[deshipu]

Did you forget to also connect gnd?

[pythoncoder]

How are you connecting the UART to the PC? What sort of adaptor are you using (e.g. FTDI USB adaptor)? I do hope you're not connecting to a PC serial port with a 9 or 25 way D-type connector. If you are, stop, hope no damage is done, and get an FTDI adaptor.

[ajie_dirgantara]

Did you forget to also connect gnd?

it is connected because REPL is running OK on another UART

[ajie_dirgantara]

How are you connecting the UART to the PC? What sort of adaptor are you using (e.g. FTDI USB adaptor)? I do hope you're not connecting to a PC serial port with a 9 or 25 way D-type connector. If you are, stop, hope no damage is done, and get an FTDI adaptor.

yes I am using FTDI.. and also I think it is OK because REPL is working on another UART. I am not using USB.

[ajie_dirgantara]

Ok, If I am writing to UART3 (currently used by REPL) it shown OK on hyperterminal. but if I am using UART2, it shows garbled message. weird.

and, did I said I am using pyboard before?-- sorry, I mean I am using nucleo L476RG.

[ajie_dirgantara]

UPDATED :

The mistake are on me. I am NOT using correct FTDI usb to serial adapter. CASE CLOSED.