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Error communicating to target processor TWR-K21D50M

Question asked by Viktors Snicarevs on Feb 18, 2016
Latest reply on Feb 23, 2016 by Viktors Snicarevs


I have 5 TWR-K21D50M boards, 2 of the have following problems:

1.They wont program unless I use 'Mass erase on connect' and hold them in reset before starting programming.

2. While using sdk example (as GPIO one) it will program succesfully, but disconnect debugging in about 30 seconds.

3. When I am trieng to load a bigger binary I am getting error:


Loading programming algorithm ...




Processing Object File Data ...


Error communicating to target processor - try a RESET.


Error loading CRC-16 algorithm.

Error loading CRC-16 Algorithm.

Error verifying flash of device

Error occured during Flash programming.

PE-ERROR: Error downloading to the device.


The other 3 boards work fine, all of them have the same version of firmware. I am using KDS. Debugging through onboard usb using P&E.


Any sugestion what could be wrong with them before I send them back to suplier?


Thank you!