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Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
@Prommy
I want to try to shove a new device into my Bangle.js, but unfortunately they only come in SPI flavors. Since the GPIOs on the nRF52 appear to be completely occupied (https://www.espruino.com/Bangle.js+Technical), I doubt I could use the internal SPI interface nor do I really want to muck around what appears to be interfacing with the flash memory.
Someone turned my on to the idea of bit banging an SPI interface, and I just may be able to do that his for seemingly unused GPIO pins on the io expander. Before proceeding, I wanted to ask the community if they'd toyed with these pins.