RE: Problem sending more than 1 data packet to nrf52840 via the virtual serial port using USB.

Brunelli — Wed, 01 Sep 2021 18:41:05 GMT

Thanks for the help, I managed to solve the problem now.
I was using the read function this way without setting the size i was getting the message:

 ret_code_t ret = app_usbd_cdc_acm_read(&m_app_cdc_acm,
                                        &m_rx_buffer[1],
                                        sizeof(m_rx_buffer));

When i changed for a fixed size solved my problem:

ret_code_t ret = app_usbd_cdc_acm_read(&m_app_cdc_acm,
                                       &m_rx_buffer[1],
                                       8);

RE: Problem sending more than 1 data packet to nrf52840 via the virtual serial port using USB.

Marjeris Romero — Tue, 31 Aug 2021 12:34:49 GMT

Hi Rodrigo,

I am sorry for the late reply. For your use case I think you should try running this project one colleague of mine have made: https://devzone.nordicsemi.com/f/nordic-q-a/53649/need-a-simple-terminal-program-to-communicate-with-ble-uart-service/217898#217898

Since I suppose you would want to use the nRF52840 dongle as a central device while the sensor will be your BLE peripheral.

See how incoming data from the CDC port is processed in the cdc_acm_user_ev_handler().

Best regards,

Marjeris