Super fast SPI speedup for RP2040 displays

What this episode covers

We re-spun our STEMMA Friend design from a SAMD21 to an RP2040 to take advantage of the more-powerful chip, to make it CircuitPython-friendlier and faster at doing stuff like I2C sniffing. While porting over the Arduino code (which pretty much works just fine) we noticed the display is a little sluggish due to SPI data being sent over one byte at a time with a delay. So we're adding a bulk-transfer SPI function to the Philhower RP2040 core to take advantage of the pico-sdk's buffered writes - its now 10x faster! #adafruit #rp2040 #pico Visit the Adafruit shop online - http://www.adafruit.com ----------------------------------------- LIVE CHAT IS HERE! http://adafru.it/discord Adafruit on Instagram: https://www.instagram.com/adafruit Subscribe to Adafruit on YouTube: http://adafru.it/subscribe New tutorials on the Adafruit Learning System: http://learn.adafruit.com/ -----------------------------------------

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This episode was published on May 22, 2021.

What is this episode about?

We re-spun our STEMMA Friend design from a SAMD21 to an RP2040 to take advantage of the more-powerful chip, to make it CircuitPython-friendlier and faster at doing stuff like I2C sniffing. While porting over the Arduino code (which pretty much works...

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