GPIO 6 will not control

RE: GPIO 6 will not control

Cy — Wed, 07 Aug 2019 19:50:31 GMT

I went back through the sdk_config.h file and did find what you were alluding to,

NRF_LOG_BACKEND_UART_TX_PIN 6 changed it to something else and that did it! Thank you!

RE: GPIO 6 will not control

Cy — Wed, 07 Aug 2019 15:08:36 GMT

Simon,

Ok, i did give that a try, but did not work! I have forgotten about the sdk_config.h file and have given that a look but nothing is jumping out at me as a cause of the problem. i do see that several UART's configurations are enabled, but disabling them has no effect.

I may port my project to a new project just to work around my misunderstandings of the nRF52832 project structure.

RE: GPIO 6 will not control

Simonr — Wed, 07 Aug 2019 11:07:39 GMT

Can you try assigning the TX_PIN_NUMBER to an unused GPIO in order to make sure that P0.06 isn't used by the UART? The only difference between P0.06 and P0.28 (in hardware terms) is that P0.28 can be used as an analog input as well as a digital I/O. P0.06 can only be used as a digital I/O.

Best regards,

Simon

RE: GPIO 6 will not control

Cy — Wed, 07 Aug 2019 00:55:51 GMT

What would the difference be between pin 6 and pin 28?

RE: GPIO 6 will not control

Cy — Mon, 05 Aug 2019 15:10:51 GMT

Simon,

Thank you for your response! The project started from an example project, spi maybe, but the make file has been edited to reflect the custom hardware and the pca10040.h file, therefore the default UART TX on pin 6 is no longer applicable.

RE: GPIO 6 will not control

Simonr — Mon, 05 Aug 2019 11:40:44 GMT

GPIO pin 6 is by default set as the TX pin for UART in the nRF52832, which is likely why you can't make it work. Please try changing TX_PIN_NUMBER in the pca10040.h header file and reflash the application.

Best regards,

Simon

RE: GPIO 6 will not control

Cy — Sun, 04 Aug 2019 16:27:42 GMT

Update, if I jumper onto the D/C pin with GPIO28 and change the board file to reflect the change the display will be controlled. Why is GPIO6 complicated, the datasheet reads that it is the only function on the pin, GPIO?