How to set up the ARM instruction set by default?

[lhf]

Hi： Now keil4 default is to use the 16_bit THUMB instruction set, if I want to set it to start the program using the 32_bit ARM instruction set, how should we do? thanks

[RK]

The Cortex-M cores on the nRF series don't support the ARM instruction set, just the THUMB one, so you can't set it to ARM

[endnode]

Well according to this ARM Cortex-M4 support 32-bit THUMB-2 instruction set as well as others... but I assume Keil compiler knows this.

[RK]

even THUMB had some 32 bit instructions, THUMB-2 (which in most assemblers is still enabled by setting mode to 'thumb') has more. I took the question to mean 'how can I turn on the entirely 32 bit old ARM mode' which the cortex don't support.

[lhf]

I have a lot of labels in the process of labeling, but now can not jump, it seems beyond the scope of the jump, and how should this problem be solved ah?

[RK]

you are fairly incomprehensible but looking at the image you posted you're trying to link THUMB code with something, library or otherwise, compiled for ARM. That won't work.