No DAP Device found on JTAG Chain !!! Error

[sreeragag]

Hi,

We are trying to establish JTAG connectivity in the on LS1046A based custom design board. When we try to access CPU-JTAG, in Connection Diagnostics we get error message in Scan IDCODE

   "No DAP Device found on JTAG chain" .

In the custom design DAP is not used.

So can we make the JTAG connecivity to use Codewarrior for custom board?

Thanks in advance .

[yipingwang]

Hello Sreerag A G,

Please check whether the signal TBSCAN_EN_B is configured as 0.

In CodeWarrior IDE, please open Target Connection Configuration panel from Run->Debug Configurations->GDB Hardware Debugging->Debugger->Configure target connection->LS1046A_RDB(1).

Please check whether the Probe type is configured as CodeWarrior TAP rather than CMSIS DAP in Target Configuration panel.

Please modify USE_SAFE_RCW as True in Target Init File panel, because there is no valid RCW on your new custom target board, it's needed to configure the target board to use hard-coded RCW.

You could refer to the first section in the document https://community.nxp.com/docs/DOC-331981 for details.

If your problem remains, would you please capture CCS Protocol Console logging and send it to me to do more investigation?

You can do this by going to Window > Preferences > Target Connection Configuration > Logging Configuration > Logging level : Debug, Enable logging to Eclipse console.

For any problem, please feel free let me know.

Thanks,

Yiping

[addiyi]

You can skip Connection Diagnostic and directly use Connect or Inspect.

Adrian