USB-TAP connection problem

[flik]

Hi all,

    When I use usb-tap to erase the flash device by CodeWarrior IDE, there is a problem:'CCSProtocolPlugin : Failed to correctly configure the JTAG chain [Cable disconnected].'

And I've checked the ccs running log, the error occured in the 'ccs_config_chain' stage. The error info is:

'

...

CCS: 03A0 : ccs_get_config_chain
CCS:  :  serverh = 0
CCS:  :  device_list: (size = 0)
CCS:  : ccs_get_config_chain; ccs_error = 0

CCS: 03A0 : ccs_config_chain
CCS:  :  serverh = 0
CCS:  :  cc = 0
CCS:  :  device_list: (size = 1)
CCS:  :   device[0]:: core_type=53; device_descr=[ir_length:0;dr_bypass_length:0;bypass_instruction:0]
CCS:  : ccs_config_chain; ccs_error = 4

'

  Any helps? Thank you!

[Black]

The "Cable disconnected" message indicates that the USB TAP is not successfully talking to the target.

Possible causes:

-Probetip cable plugged in backwards?

-Is the target power off?

-Is the chain (JTAG Config file) misconfigured?

-USB TAP or Ethernet TAP (or JTAG Extender cable) hardware failure?

- you might try updating the USB TAP firmware from the current CodeWarrior PA 8.7 as described in the USB TAP user manual.

I hope this helps.

[Voxan]

Hi there,

in general, when opening the flash programmer, the first step should be to load the right configuration file as described in the reference manual.
Make sure the configuration file matches your target (connection protocole, flash device...)

If this does not help then  I would suggest that you open a Servicve Request at

 http://www.freescale.com/webapp/sps/site/homepage.jsp?nodeId=054670&tid=FSH

please do not forget to provide as much information on your environment as possible, host OS, CW version, target, board reference...

Hope this helps...

Regards