How to redefine pins in "Adafruit_tag_reader" example?

[MikeLemon]

Hello everyone,

So I'm trying to maybe start get going with the NRF52832 platform but every time I try I get stuck with it.

In this example I'd like to use different pins to test my PN532 NFC reader for the IRQ and RST on the DK hardware and I can't find the line that may be defining it searching the keywords "IRQ" "RST" in both the main file and the "adafruit_pn532" third party library.

Currently following this tutorial: https://devzone.nordicsemi.com/b/blog/posts/how-to-test-nrf52-nfc-tag-with-reader-adafruit-tag

Also I'd be useful to have a link to some tutorial series for the NRF52832 using the official SES IDE something like "blank to blink: style tutorial that also shows how to utilize different serial communications like the TWI, SPI and the UART.

Thanks for helping.

[MartinBL]

Hi,

You need to look for the PN532_IRQ and PN532_RESET defines. In the example code used in your link, they are located in "\SDK_11.0.0\external\nfc_adafruit_library\adafruit_pn532_config.h".

Unfortunately we don't have any blank-to-blink tutorials (all we have are these). To get up and running with TWI and/or SPI I suggest that you look at the most basic TWI and SPI example you can find here. 

[MikeLemon]

Hello, 

Sorry for the long delay But I can't find this files in that folder these is only what I see:

and Can't find that reference in any of those files.

[MartinBL]

No worries.

What SDK are you using? I assumed that you used SDK 11 since that is what is used in the blog post. 

Here is the file from SDK 11:

adafruit_pn532_config.h

[MikeLemon]

No I'm using the most recent SDK now

[MartinBL]

In SDK 15 the IRQ and RST pin numbers are defined in sdk_config.h. They are called PN532_IRQ and PN532_RESET respectively. 

One way to figure this out is to work your way back from adafruit_pn532_init() that is called from main():

1. main()
2. adafruit_pn532_init()
3. adafruit_pn532_pin_setup():
4. Then figure out what values are used for m_pn532_object.irq and m_pn532_object.reset by inspecting m_pn532_object.

You might be interested in this tutorial series btw: SEGGER Embedded studio – Getting started.