I can’t use a different UART, this is a direct connection between the two chips on the PCB.
Regards, Mark — Mark Stevens mark.stev...@wildernesslabs.co > On 9 May 2024, at 17:24, Tomek CEDRO <to...@cedro.info> wrote: > > On Thu, May 9, 2024 at 6:15 PM Mark Stevens > <mark.stev...@wildernesslabs.co.invalid> wrote: >> Yes, I am sure both side are configured correctly. >> If I run the kernel code only then all works as expected. >> If I run user space code alone all works as expected. >> The problems happen when I transition from kernel use of the UART to user >> space use of the UART. >> I have also connected a logic analyser to the system and all looks good. >> Also, my current problem is NuttX reading data not sending it. Sending may >> also be a problem but I have not got that far at the moment. > > Which UART do you use? What happens when you use different UART? Are > you sure it does not interfere with console? > > -- > CeDeROM, SQ7MHZ, http://www.tomek.cedro.info
