nRF52832 SPI & FreeRTOS problem

[Minseo]

Hi, I am developing nRF52832, ADS1291.

I got the data from ADS1291 normally through SPI communication.

And I applied RTOS by referring to the nRF5_SDK_17.0.0/examples/peripheral/blinky_freertos.

It seemed to work normally, but while receiving data from SPI, there was a problem that the data suddenly got cut off or a strange value came out.

If I remove RTOS and proceed, the data comes out normally in ADS1291.

I don't know what the problem is. Help me.

before                                                                          after

Thank you.

[Minseo]

Hi.

I just checked.

It works because I'm turning off the BLE

What does RTOS have to do with BLE?

Thank you.

[Kenneth]

It seemed to work normally, but while receiving data from SPI, there was a problem that the data suddenly got cut off or a strange value came out.

You need to try to narrow down the problem a bit, for instance try to set the spi buffer as static volatile and possible copy the buffer to a second buffer in case it might be re-used for the next transfer in some way. Maybe connect a logic analyzer trace to check how frequently you are calling spim and how the interval is affected by BLE.

Best regards,
Kenneth

[Minseo]

Hi.

Thank you. I solved it!