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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.
@TomWS
@fanoush, I have a test case running where I use I2C and either SPI1 or SPI3. I did not try a test case where I try to use I2C and SPI2, although, if they weren't used concurrently, it might work, but, as you say, since they share HW resources, it's not a good idea. I don't think that there is any checking at the jswrapper level so it wouldn't be prohibited.
The jswrapper only enables TWI1, not TWI0.