I've seen this problem before which revolved around flow control;
essentially soft versus hard flow control (xmit off/ xmit on)
Are you using a null modem cable? If not that may give you the accuracy
you're looking for, else hardware flow control is the only other
possibility if it is flow control.
Bill
On 5/9/2024 9:24 AM, Tomek CEDRO 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
