I am using a SM320F28335GJZMEP, when i connect it to the JTAG Port using code composer studio 6.0.0.
I get a message stating the following:
Error
Error -1156@0x0
'DEVICE MAY BE IN LOW POWER MODE'
Do you want to bring it out of the mode?(emulation package 5.1.636.0)
When I select yes the error just reappears, I have to use task manager to close out of CC .
Tried resetting the DSP with recycling power and with a hardware logic reset, no change.
How do I get it out of this low power mode if I cannot access the DSP.
Monitored the 3.3 and 1.9v with a scope no dropout, clock look ok.
Some background
This happened on a customer board, while bring it up for the first time.
Verified power, connected jtag with power turned off then on), downloaded the program. it gave us a dsp ram failure, but then downloaded the code.
Verified program was running(external LEDS)
Connected external RS422 (again removing and turning power back on)
Worked properly.
Tried to download a new program and I get multiple errors.
The one listed above is the most frequent, but I have seen it state the device is not a TMS320F28335.
Do I need to differentiate the difference between a TMS320F28335 and the EP version of the part SM320F28335GJZMEP.
three other points,
1) We have an eval board and it downloads the same code using the same JTAD connector properly.
2) This is the second customer board we are bringing up, the first worked fine, but unfortunately I no longer have access to the board.
3) Reviewing the schematic found one emulator line was not pulled up(and the clock was pulled up), removed pullup from clock added pullup to second emulator pin , as per recommended in the data sheet.
code composer appears to lock up less, but still getting device in low power mode,
Any suggestions would be appreciated.
