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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.
@fanoush
What about battery? I was thinking one of reasons to use software bitbanging was that HW spi takes extra power on top of CPU which is already on? Also display needs DMA, would it make sense to use DMA based SPI for reading from flash too?