UART communication with NORDIC BLE chip

[RShiv.1]

Hi,

I am trying to interface STM32L476RG with NORDIC BLE chip..

My UART 4 and UART 5 individually working fine..

My code inside the while loop is as follows

      HAL_UART_Receive(&huart4,(uint8_t*)MSG4,sizeof(MSG4),1000);

      HAL_Delay(1000);

      HAL_UART_Transmit(&huart5,(uint8_t*)MSG4,sizeof(MSG4),1000);

      HAL_Delay(1000);

I want whatever received through BLE ->UART ->STM to come out as is

but I am not getting anything..UART 4 is receiving fine as we were able to check the output

but I am not able to receive and print the same in UART 5..can I know why this is happening??

Thanks and regards

Ravi

[RShiv.1]

HI all,

Kindly give me some direction on how to proceed from here...we are stuck..Thanks

Ravi

[Piranha]

https://github.com/MaJerle/stm32-usart-uart-dma-rx-tx

[RShiv.1]

Hi piranha,

we are currently not using any DMA in our UART transmission..just a simple messages sequence which we can send from STM to Nordic BLE .

attached is the C code which I am trying..let me know if we need any changes here..if we need to add any driver file.

when I test as individual STM board this works fine..only when integrated to Nordic I find this issue...

when Tx is done(HAL_TRANSMIT) I get ifconfig___end at the other end instead of intended characters..do not know the reason

same when Rx is done(HAL_RECEIVE ) I cannot see any characters received...but till the pins when connected to USB-> UART terminal we are seeing from Nordic..but not inside STM...can we know why this is happening.

Thanks and regards

Ravi

[RShiv.1]

Hi piranha,

Any update on my previous query on UART RX and Tx which we are trying to do with NORDIC and STM32..kindly let me know.

Thanks

Ravi

[RShiv.1]

Hi,

I am not able to receive HAL_UART_RECEIVE()..I have shared the main.c file...let me know any changes need to be done.

Thanks

Ravi

[RShiv.1]

Hi,

Any update let me know ..we are stuck at this point kindly help us to understand how to procced from here

regards

Ravi

[RShiv.1]

Hi,

should I use HAL_UART_RECEIVE_IT for this??..there are no INTERRUPT pin as such ..but still do we need to use this..let me know.

thanks

Ravi

[RShiv.1]

HI,

Any update on how HAL_UART_RECEIVE need to be addressed ..Kindly help us through this.

regards

Ravi