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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
How complicated is to add support for two NRF52 I2C buses? Looks like this watch uses one for accelerometer and second one for HR sensor.It uses TWI0, TWI1 and SPI2 (for OLED). TWI0 uses scl 7 sda 8.