Sensor is not communicating with nrf52840 via SCL p0.6 and SDA p0.08 lines.

[Gouse Basha]

Hi all,

Greeting of the day....

Here I am getting an issue with TWI interface. That I am using to communicate with sensor module with NRF52840.

The SCL------> p0.6

       SDA -----> p0.8

In the firmware part it is struck at the  nrf_drv_tx() call and return with time out error.

Please suggest me.

Regards,

Basha

[Nguyen Hoan Hoang]

Which board are you using ? On the DK, it might be used for UART.  Make sure that those pins are not connected to something else.

[Jørgen Holmefjord]

If you are using a custom board, make sure you do not have NRF_LOG module enabled with UART backend, or that you do not enable any UART modules in your application.

// <e> NRF_LOG_BACKEND_UART_ENABLED - nrf_log_backend_uart - Log UART backend
//==========================================================
#ifndef NRF_LOG_BACKEND_UART_ENABLED
#define NRF_LOG_BACKEND_UART_ENABLED 0 // Disable UART backend for logging
#endif

// <o> NRF_LOG_BACKEND_UART_TX_PIN - UART TX pin 
#ifndef NRF_LOG_BACKEND_UART_TX_PIN
#define NRF_LOG_BACKEND_UART_TX_PIN 3 // Or change this pin to something else than the pin you want to use for TWI (P0.06 is default)
#endif