Problem Configuring P0.09 pin as SCL TWI

[Muhammad Nabeel]

Hello,

I am trying to configure Pin P0.09 as SCL pin for TWI. But I am not getting any results with this pin while I get data when any other GPIO pins are configured as SCL pin. I am using PCA10028 Evaluation board. Please help me solve this problem.

Regards

Muhammad Nabeel Tahir

[Simonr]

Hi Muhammad

This is because pin 0.09 is by default used by the UART connected to the interface MCU. Please see chapter 5.2 Virtual COM port in the nRF51DK user guide for more info. The easiest solution would be to use another pin for this functionality to keep the Virtual COM port function as well.

Best regards,

Simon

[Muhammad Nabeel]

Can I change the uart pin?