Part Number: CCSTUDIO
Tool/software: Code Composer Studio
My target is a Beaglebone Green. I can connect successfully to the Cortex A8, so I know the basics of my hardware and configuration are correct - but I cannot connect to the PRU modules, it gets stuck at 'Connecting : Running'. CCS does not crash.
Enabling DebugServer logging I get the attached output from just opening CCS, attempting to connect, waiting ~3 seconds, then disconnecting and exiting the application.
https://e2e.ti.com/cfs-file/__key/communityserver-discussions-components-files/81/output.7z
If I search for connection changes:
grep -n 'Connection state changed' ./output.txt 12974:0x7F804F61A700 37983 3 IcePick_D_0 STATE I: Connection state changed to 4 12979:0x7F804F61A700 38009 3 IcePick_D_0 STATE I: Connection state changed to 0 13271:0x7F804F61A700 38116 3 CS_DAP_M3 STATE I: Connection state changed to 4 13279:0x7F804F61A700 38118 3 CS_DAP_M3 STATE I: Connection state changed to 0 16390:0x7F804F61A700 38451 3 CS_DAP_DebugSS STATE I: Connection state changed to 4 16406:0x7F804F61A700 38453 3 CS_DAP_DebugSS STATE I: Connection state changed to 0 16810:0x7F804F61A700 38473 3 PRU_0 STATE I: Connection state changed to 4
// The disconnection occurred between these two lines 60392:0x7F80C4B52700 47707 3 PRU_0 STATE I: Connection state changed to 3 60494:0x7F804F61A700 47724 3 PRU_0 STATE I: Connection state changed to 2 60498:0x7F804F61A700 47724 3 CS_DAP_DebugSS STATE I: Connection state changed to 3 60638:0x7F804F61A700 48032 3 CS_DAP_DebugSS STATE I: Connection state changed to 2
As you can see PRU0's connection state never transitions to '0' unlike the other devices in the chain. The debug around 'IcePick_D' is:
0x7F804F61A700 37983 3 IcePick_D_0 STATE I: Connection state changed to 4 0x7F804F61A700 37983 3 IcePick_D_0 GTI C: GTI_STAT( 0x00007F80482635C0 ) 0x7F804F61A700 38009 3 IcePick_D_0 GTI R: GTI_STAT( 0x00007F80482635C0 ) = 0x0000000E 0x7F804F61A700 38009 3 IcePick_D_0 STATE I: Target execution state changed to STATUS_NON_DEBUG_CHANGE 0x7F804F61A700 38009 3 IcePick_D_0 STATE I: Debugger execution state changed to EVENT_DSP_HALT 0x7F804F61A700 38009 3 IcePick_D_0 STATE I: Connection state changed to 0
Notice the 'GTI_STAT' return value is non-zero, that is the case for all the devices, except PRU0:
0x7F804F61A700 38473 3 PRU_0 STATE I: Connection state changed to 4 0x7F804F61A700 38473 3 PRU_0 GTI C: GTI_STAT( 0x00007F8048FAA6B0 ) 0x7F804F61A700 38476 3 PRU_0 GTI R: GTI_STAT( 0x00007F8048FAA6B0 ) = 0x00000000 0x7F804F61A700 38476 3 PRU_0 STATE I: Target execution state changed to STATUS_RUNNING 0x7F804F61A700 38476 3 PRU_0 STATE I: Debugger execution state changed to EVENT_DSP_RUN 0x7F804F61A700 38476 3 CS_DAP_DebugSS GEL I: Evaluating "OnChildRunning()" 0x7F804F61A700 38476 3 CS_DAP_DebugSS POLL D: New request of type DSP_RQ_NONE added to polling loop by N12_GLOBAL__N_123NullRequestNotificationE 0x7F804F61A700 38476 3 PRU_0 POLL C: Firing DSP_ALREADY_RUNNING to all DSP_USER's 0x7F804F61A700 38476 3 COM_DBG_IF C: 11DSP_CO_USER::OnAlreadyRunning() 0x7F804F61A700 38476 3 COM_DBG_IF R: 11DSP_CO_USER::OnAlreadyRunning() 0x7F804F61A700 38476 3 COM_DBG_IF C: 11DSP_CO_USER::OnAllowedUserAccessesChanged() 0x7F804F61A700 38476 3 XPCOM C: ( (dsISimpleEventCallback*)0x7f809808c1f0 )->onEvent() 0x7F804F61A700 38476 3 XPCOM R: ( (dsISimpleEventCallback*)0x7f809808c1f0 )->onEvent() = 0x00000000 0x7F804F61A700 38476 3 COM_DBG_IF R: 11DSP_CO_USER::OnAllowedUserAccessesChanged() 0x7F804F61A700 38476 3 COM_DBG_IF C: 11DSP_CO_USER::OnExecutionStatusChanged() 0x7F804F61A700 38476 3 XPCOM C: ( (dsISimpleEventCallback*)0x7f809808b890 )->onEvent() 0x7F804F61A700 38476 3 XPCOM C: ( (dsIRunControl*)0x7f8098088a80 )->getExecutionState( 0x7f804f6176b0, 0x7f804f6176c8, 0x7f804f6176e0, 0x7f804f6176f8 ) 0x7F804F61A700 38476 3 XPCOM R: ( (dsIRunControl*)0x7f8098088a80 )->getExecutionState( *0x7f804f6176b0 = true, *0x7f804f6176c8 = false, *0x7f804f6176e0 = 0x00000005, *0x7f804f6176f8 = 0x00000001 ) = 0x00000000 0x7F804F61A700 38476 3 XPCOM R: ( (dsISimpleEventCallback*)0x7f809808b890 )->onEvent() = 0x00000000 0x7F804F61A700 38476 3 COM_DBG_IF R: 11DSP_CO_USER::OnExecutionStatusChanged() 0x7F804F61A700 38476 3 PRU_0 POLL C: Firing of DSP_ALREADY_RUNNING complete
It looks like the error is occurring because the PRU is already running, which it is as I have code loaded into them by Linux on boot - this is the code I wish to debug. Has anyone else experienced this? What I am doing wrong?
