12.10.2020 11:39, Matwey V. Kornilov пишет: > Hello, > > I am trying to provide u-boot via uart to am335x bootrom (I use > BeagleBone Black board). Has anyone succeeded on it? > > The CPU technical reference says that I have to use X-Modem 1K to load > the firmware. I am trying to reach this with screen and sx command. > > In the serial console I see transmission invitation from the hardware > side: 'C'. > When I use sx --1k -X to transmit the binary there are no data accepted. > When I use sx -X (with 128 byte frame) the transmission is running until > hardware sends "Cancel" command in the middle. > > I've also tried minicom terminal. It behaves like X-Modem 128 byte > transmission with no success. > >
Now I believe this was due to transmission errors. I've taken another RS232 converter and now everything boots both with sx -X and sx --1k -X
