Unable to locate UART TX (51) and RX (50) pin definitions in DW3_QM33_SDK_1.1.0 FreeRTOS CLI project

Wireless Connectivity Ultra-Wideband
1

Hello,

I am working with the DW3_QM33_SDK_1.1.0 in the following project path:
Projects/FreeRTOS/CLI/Type2AB

According to the documentation, the default UART pins are:

  • TX = 51 (P0.07)
  • RX = 50 (P0.08)

I would like to change these UART pins to use:

  • TX = 34
  • RX = 32

However, I am unable to find where the existing UART TX (51) and RX (50) pin definitions are located in the project files.

Could you please guide me on:

  1. Where the UART TX (51) and RX (50) pins are actually defined in the SDK/project?
  2. How I can modify them to use TX = 34 and RX = 32 instead for my experiments?

Any help or pointers to the correct file/definition would be greatly appreciated.

Thank you!

3

Hi Vasudev,

Upon reviewing the source code, the UART pin configuration is defined in the header file type2ab_evb.h

DW3_QM33_SDK_1.1.0\Src\Boards\Src\Type2AB_EVB\Common\type2ab_evb.h
#define UART_0_TX_PIN  NRF_GPIO_PIN_MAP(0, 7)
#define UART_0_RX_PIN  NRF_GPIO_PIN_MAP(0, 8)

Regarding the new pin configuration your stated pins are

Tx pin 34, which is P0.21
Rx pin 32, which is routed to DW_GPIO7

For the Rx, find a pin routed to one of the nRF gpios and modify the above pin map configuration.

4

Thank you for taking the time to reply. We really appreciate your input and will look into it. Thanks again!

1 Like