Laukik Hase

Hello, folks! I am facing the same issue, any updates on how to resolve it?

Hello, @muhambykar Can you check the GPIOs that you are using as Rx and Tx?

Hello, @muhambykar Sorry for the late reply. 1) Test this example for UART - [UART Async Tasks](https://github.com/espressif/esp-idf/tree/release/v4.1/examples/peripherals/uart/uart_async_rxtxtasks) 2) Verify whether your STM32 is in BOOT mode before flashing. 3) Try...

> Hello there, I found the solution. on ESP-IDF v4.0.x , > uart_set_rts(UART_CONTROLLER, 1); > this function changes the uart configs, and got trouble about it. After make comment it,...

@muhambykar I am closing the issue for now. Reopen it if you have any updates regarding the problem.

Hello, Sorry for the late response. I will try reproducing this on my side and revert back to you. @akym and @madhavee77 Could you guys specify the following: 1. ESP-IDF...

> Hello there, I found the solution. on ESP-IDF v4.0.x , uart_set_rts(UART_CONTROLLER, 1); this function changes the uart configs, and got trouble about it. After make comment it, problem is...

Hello, @akym I tried the example again on an [`STM32F103C8`](https://stm32-base.org/boards/STM32F103C8T6-Blue-Pill) with `uart_set_rts(...)` disabled and the connections mentioned in the README, but it executed successfully. I also had an [`STM32F401xC`](https://stm32-base.org/boards/STM32F401CCU6-WeAct-Black-Pill-V1.2.html) lying...

Hello, @hzhh110! Thank you for the issue report! But. I did not get your question. Do you want to change the UART Controller and pins? You can change them [here](https://github.com/ESP32-Musings/OTA_update_STM32_using_ESP32/blob/45463cbdfb5abcf00768b48d6744750008666a4f/components/stm_pro_mode/include/stm_pro_mode.h#L37)....

Hello, @CodeOn-ArK! As per the link you have provided, the [B-L475E-IOT01A](https://www.st.com/en/evaluation-tools/b-l475e-00iot01a.html) board uses the STM32L4 series MCU which follows the USART protocol and Boot Mode procedure we have used in...