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
