UART communication between stn32h7s78 and Wi-Fi module EMA3080

harshpanchal_6 · ‎2024-11-25

Hello Folks,

I am trying to establish the UART communication between STM32H7S78 and WIFI module EMA3080.

I am facing issue while transmitting, receiving and response of AT-commands from UART-7 to UART-4.

Please find the attached main.txt file and please share your suggestions.

Thank you,

Harsh

Karl Yamashita · ‎2025-01-21

I can't seem to find the original post. I was searching for a subject that was related, but didn't find one. Way too many posts/replies to open and read all of them.

I started a new project for the Nucleo-H723 and have the code ready to test UART7, along with UART5 and VCP. However, I didn't get a chance to test it during the holiday. I will try to remember to test it tonight.

Don't worry, I won't byte.
TimerCallback tutorial! | UART and DMA Idle tutorial!

If you find my solution useful, please click the Accept as Solution so others see the solution.

harshpanchal_6 · ‎2025-01-22

Duplicate - merged

Hello Community,

I am using receive interrupts for UART4 and UART7 on stm32h7s78 board. So, in this UART7 interrupt is not working. So, anyone have the solution for this.

Is UART7 is capable for rx interrupt?

Please share your inputs on this. It will be appreciated.

Thank you,

Harsh

Andrew Neil · ‎2025-01-22

Do your UART7 interrupts work alone? ie, without UART4 ?

This seems very similar:

https://community.st.com/t5/stm32-mcus-boards-and-hardware/not-able-to-receive-data-on-uart7-in-stm32h7s78-dk/m-p/764031

And this seems to be the same question:

https://community.st.com/t5/stm32-mcus-embedded-software/uart-communication-between-stn32h7s78-and-wi-fi-module-ema3080/td-p/746540

harshpanchal_6 · ‎2025-01-22

Yess it is the same issue we are facing

Andrew Neil · ‎2025-01-22

You haven't said what hardware you're using - ST board(s)? 3rd-party board(s)? custom board(s) - nor how you have this all connected up.

Please see: How to write your question to maximize your chances to find a solution.

@harshpanchal_6 wrote:
WIFI/BLE module will send the response to UART-7 but I am not getting the UART-7 callback.

How have you verified that the WIFI/BLE module does actually send the response?

And that the response actually arrives at the UART7 RX pin?

@harshpanchal_6 wrote:
But if I do the debugging with USB-to-TTL and EMC3080-P module I am receiving the expected response from the module.

What do you mean by "do the debugging" here ?

Show full details of the two setups - with diagrams.

Is it the same setup as this ?