How to change TX_PIN_NUMBER to P1.00 on the nRF52840?

[David Fogelsong]

This is really a two part question.

1.  How do I even refer to pin P1.00?  It's clear that pin P0.06 is referred to simply as pin 6, but what is the naming convention for the P1.xx pins?

2.  Do I just hack the pca10056.h file directly to change the TX_PIN_NUMBER  definition?  If not, that, what do you recommend?

Please advise.

[Peter Kenyon]

try adding 32 to the pin number for port 1 it worked for me, ie pin 32 in your case

[David Fogelsong]

Looks like you're exactly right.  I found this, but it's equivalent to what you said:

//@brief Macro for mapping port and pin numbers to values understandable for nrf_gpio functions.
 
#define NRF_GPIO_PIN_MAP(port, pin) (((port) << 5) | ((pin) & 0x1F))

[David Fogelsong]

Yipee!  I made the change by hacking pca10056.h to use this line instead, and it worked! 

#define TX_PIN_NUMBER  NRF_GPIO_PIN_MAP(1,0)   

So, that part is good.  However, hacking SDK header files is problematic, because then different projects start to interfere with one another because they rely on different hacked SDK's.  Is there a more elegant solution than hacking the SDK directly?  

i.e. question #1 is answered.  But, what is the answer to question #2 in the OP?

[Jørgen Holmefjord]

If you are using the examples with custom boards, you can follow the documentation to add support for custom boards to the SDK: Using the SDK with other boards

You are not required to use the defines from BSP for pins in your application. You can add a new define in your main.c and pass this to the UART init:

#define UART_TX_PIN NRF_GPIO_PIN_MAP(1,0);