RTEMS | arm/stm32h7: Fix UART CREAD flag logic (!1195)

[Mohamed Ayman (@mohamedayman23)]

Mohamed Ayman created a merge request: https://gitlab.rtems.org/rtems/rtos/rtems/-/merge_requests/1195

Project:Branches: mohamedayman23/rtems:fix-CREAD-enable-recevier to rtems/rtos/rtems:main
Author:   Mohamed Ayman



arm/stm32h7: Fix UART CREAD flag logic

The stm32h7_uart_set_attributes function incorrectly set the UART mode to UART_MODE_RX when the POSIX CREAD (Enable Receiver) flag was cleared in the termios control flags.

This inadvertently disabled the transmitter (breaking console output) and left the receiver enabled, which is the exact opposite of the intended behavior.

This commit fixes the fallback logic to set the mode to UART_MODE_TX when CREAD is not set, ensuring that the console can still transmit data while reception is properly disabled.

![Screenshot from 2026-04-10 09-24-11.png](/uploads/ab5bbf7d95adf1ea417e40bd0b28c21f/Screenshot_from_2026-04-10_09-24-11.png){width=900 height=426}

![Screenshot from 2026-04-10 09-25-20.png](/uploads/65c16161fda0830b3e55de0292a0b325/Screenshot_from_2026-04-10_09-25-20.png){width=900 height=275}

![Screenshot from 2026-04-10 09-25-52.png](/uploads/d2bbde63a246176ec1d9b32693e12afb/Screenshot_from_2026-04-10_09-25-52.png){width=835 height=148}

AI Usage: None

AI Prompt: None

AI Model: None

How AI used: None

-- 
View it on GitLab: https://gitlab.rtems.org/rtems/rtos/rtems/-/merge_requests/1195
You're receiving this email because of your account on gitlab.rtems.org.


-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.rtems.org/pipermail/bugs/attachments/20260410/09b79404/attachment.htm>