Testmode Pin on P1

Hello, how do I access the Testmode pin (P1 Pin 33, STM32F205.Port PA8) in firmware for GPIO?

That pin isn’t mapped via our firmware, so you’ll have to access it directly using the STM32 GPIO commands.

Thank you, @mdma. So if I want to use the Testmode pin for SD card slave select (SS) along with the SD library for the photon, I will need to dive into the library and customize each line that calls digitalWrite(SS)?

Do you have any plans to map the Testmode pin in your firmware in the future?