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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.
@CWBudde1
I guess I should look at the documentation more properly: It's stated clear that only the Thumb-Opcodes are supported and not the Thumb-2 opcodes (except a few, which made me think that they were supported all together).
I've now downloaded the ARMv7m manual and checking the opcodes. Eventually I can improve the assembler to support more of the Thumb-2 instructions...