PDM data from central receiver over uarte to python script

RE: PDM data from central receiver over uarte to python script

dadevelopa — Fri, 02 Jul 2021 08:46:59 GMT

I got it to work now. It was printing the log info statements which was a very stupid mistake.

Thanks for the help.

RE: PDM data from central receiver over uarte to python script

dadevelopa — Thu, 01 Jul 2021 17:00:10 GMT

it just sends one buffer out now.

I just tried to run the application by itself(with hwfc disabled) and not with the segger debugger open I receive the number of bytes i want. But in every third buffer it attenuates the last 50 bytes. I know that the uarte instance attenuates these buffers since the buffers received from ble are correct. Why could that be?

As info: Instead of the pdm data i send a predefined buffer to be able to see whether the data is correct.

RE: PDM data from central receiver over uarte to python script

Sigurd — Thu, 01 Jul 2021 16:30:25 GMT

Does it make any difference if you enable flow-control?

i.e. in uarte_init() set

.hwfc = NRF_UARTE_HWFC_ENABLED,

RE: PDM data from central receiver over uarte to python script

dadevelopa — Thu, 01 Jul 2021 16:21:29 GMT

In ten seconds i receive 320000 bytes over the ble connection .But in the python script I receive a maximum 200000 bytes.

RE: PDM data from central receiver over uarte to python script

Sigurd — Thu, 01 Jul 2021 15:48:33 GMT

Hi,

[quote user=""] When i try to send the data to the serial port via uarte it always skips a buffer to send to the serial port.[/quote]

Could you explain this some more? You are sending the data over UART using nrfx_uarte_tx() in ble_nus_chars_received_uart_print(), but you are not receiving all the UART data on the computer ?