TI E2E Community
Hercules™ Safety Microcontrollers
Hercules™ Safety Microcontrollers Forum
Test of CPU compare module
Hello, I'm trying to test the CPU compare module.
I want to run its self-test and propagate a error from it to the ESM.
I'm stucked in getting in privileged mode to write in the CCMKEYR register.
I've tried to write it inside a Interruption to test if it is the privileged mode, but keeps reading zero.
I'm missing something ? There is a way to get in supervisor mode ?
You can use the SuperVisor Call (SVC) instruction (formerly SWI) to enter Supervisor mode,
Please be aware that the use of SWI is deprecated on the v7R architecture (Cortex-R4(f)). It should be replaced by the SVC instruction in any code.
To be able to cover both cases, following code snippet can be used:
Can you verify the answer so that i can close the post
All content and materials on this site are provided "as is". TI and its respective suppliers and providers of content make no representations about the suitability of these materials for any purpose and disclaim all warranties and conditions with regard to these materials, including but not limited to all implied warranties and conditions of merchantability, fitness for a particular purpose, title and non-infringement of any third party intellectual property right. TI and its respective suppliers and providers of content make no representations about the suitability of these materials for any purpose and disclaim all warranties and conditions with respect to these materials. No license, either express or implied, by estoppel or otherwise, is granted by TI. Use of the information on this site may require a license from a third party, or a license from TI.
TI is a global semiconductor design and manufacturing company. Innovate with 100,000+ analog ICs andembedded processors, along with software, tools and the industry’s largest sales/support staff.