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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.
@jeffmer
Are you using the command function built into my version of
lcd_spi_unbufas in
var cmd = lcd_spi_unbuf.command? If you are using SPI write directly as it looks like you might be you would get this error. Another thing to try is to not set double buffering on in the board file.