Received Error From Uart

Dear Team
when I upload RAK811_v3.0.0.14.H_20200810.hex File using STM32cube Programmer it uploads successfully.
but when I show in terminal and restart RAK811 i received <0><0><0><0><0><0><0>… continue. which shows the below image.
my Module Which mode Working Now?
how to remove this mode?
i also send “+++” using Terminal.
please help

You should be able to return to normal mode by the same command “+++” if you think that is the issue.

Is your RAK811 working before you tried to update? Are there any unusually error/warning during your update with STM32CubeProgrammer?

Might be the tool, does the same happen using the RAK Serial Tool?

1 Like

Dear Team,
I successfully update 3.0.0.14.hex file using STM32cubeProgrammer no get any Error
which screenshot.

But I send +++ command Using Terminal still I did not work in Configuration Mode
I Still Face <0><0><0><0>… continue…

which screenshot below

Last Time I Upload Below Code than I face <0><0><0><0>… Problem.
My code is below.
i set flag Uart_rec function. rui_uart_rec function does not receive in interrupt while sending data terminal.

in while Loop, I Code Below

please help me.

Might be the tool, does the same happen using the RAK Serial Tool ?

yes