TMS320F280039: How to read CPU Status Register ST1 in C code

Huihuang Chen

Part Number: TMS320F280039

Hi Champ,

Could you help to provide the C and assembly example code to read ST1 then save in global variable ?

Thanks!

0 Ashwini Athalye over 2 years ago

Hello Chen,

The ST1 can be read using PUSH and POP instruction. See this post for example on how to read it.

1.Mov the global variable address to one of the registers say - XAR4

2. Push ST1 and then Pop into say AH

3. Move AH to location pointed by XAR - example - MOV *XAR4, AH

The instructions for each of the operations cab be found here:

Thanks,

Ashwini

C2000 microcontrollers forum