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

[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.