2024-07-31 07:56 AM
stm32mp157f, I need to use uart5 to drive an rs485 but the hardware supplied DE pin is already in use. So I need to configure a different GPIO to use. If the device tree binding rts-gpios is supported, then the task is simplified. We can modify the board to use the gpio. Follow up to that, if it is supported do I still add "linux,rs485-enabled-at-boot-time;"
2024-07-31 12:00 PM
Hello @SLetter ,
Please double check your device tree and pinctrl configuration. You can get inspired by such community post that already deals with you topic : https://community.st.com/t5/stm32-mpus-products/how-to-enable-hardware-flow-control-rs485/td-p/277263
Kind regards,
Erwan.