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CCS/F28M35M52C: CCS ERROT -1155 ERROT-1135

Part Number: F28M35M52C

Tool/software: Code Composer Studio

I found a problem while debugging the circuit with ccs. The emulator can be connected to the M3 core and the downloader is debugged, but the emulator cannot be connected to the C28 core. Show the error shown below。

C28xx_0: Error connecting to the target: (Error -1155 @ 0x0) Device may be operating in low-power mode. The debugger has forced the device to wake up. Choose 'OK' to attempt to complete the debug connection. (Emulation package 6.0.407.3)

when I click "ok" , the following problem shows

C28xx_0: Error connecting to the target: (Error -1135 @ 0x0) The debug probe reported an error. Confirm debug probe configuration and connections, reset the debug probe, and retry the operation. (Emulation package 6.0.407.3)