can not insert breakpoint in .c except main.c when debugging

I have a strange problem:all the .c can compile、build、run、download correctly, and there is no error, but when debugging, I can insert breakpoint only in main.c, cannot insert breakpoint in any other ...
can not insert breakpoint in .c except main.c when debugging

I have a strange problem:all the .c can compile、build、run、download correctly, and there is no error, but when debugging, I can insert breakpoint only in main.c, cannot insert breakpoint in any other ...
asm inserts

Hello! How can i insert necessary for me asm comands like push/pop? for example i got example from here www.keil.com/.../armclang_ref_chr1383658400125.htm int add(int i, int j) { int res = 0;...
asm inserts

Hello! How can i insert necessary for me asm comands like push/pop? for example i got example from here www.keil.com/.../armclang_ref_chr1383658400125.htm int add(int i, int j) { int res = 0;...
Embedded code insertion

I'm writing an embedded controller that has slave devices. Is it possible with the Keil compiler (or other method) to embed the slave code into the main device for automatic uploading when the firmware...