REXYGEN Community Forum

bodie

Member

Registered: 2016-12-19

Posts: 10

UART max baudrate RPi3

Hi,

I am working with Atmega MCU connected to the Raspberry Pi3 UART on GPIOs, changed from mini UART to full UART (instead of Arduino/REXDuino for reduce the service time). When I want to open the port in Rexlang with baudrate 57600, it is ok, but with 250000 baudrate there is error in System Log -507, argument underflow/overflow. So I want to ask, what is maximum baudrate? I was able to use 500000 baudrate with Rpi3 itself and program in C or Python.

Thanks for answer.

stetina

REX developer

From: Pilsen, Czech Republic

Registered: 2015-10-29

Posts: 9

Re: UART max baudrate RPi3

The REXLANG block supports standard baudrates only, i.e. baudrates defined by POSIX: 300, 600, 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200, 230400, 460800, 500000, 576000, 921600, 1000000, 1152000, 1500000, 2000000, 2500000, 3000000, 3500000, 4000000.
Other baudrates do not work on all platforms so we have decided not to support it.