Error: Cannot stop the CPU

Some possible reasons for this error to occur:

• Watchdog issues
• Clock source for CPU is set with higher frequency than allowed or predictable
• CPU suspended / in reset / running in sleep mode
• No debug line symbol available to put the breakpoint to stop the CPU
• winIDEA cannot attach to the core
• Wrong PLL configuration

Possible solutions

• Download the latest verified winIDEA build from the Download page
• Set execution breakpoints to stop execution
• Refer to Knowledge Base category Watchdog issues

More resources in winIDEA Help

• Breakpoints
• Directories