AnsweredAssumed Answered

k70FN1M0 can't flash, MCU locked

Question asked by Brett Nicholas on Aug 13, 2015
Latest reply on Aug 20, 2015 by ZhangJennie

Hi Freescale,


I am developing a large firmware project, using a K70FN1M0 running MQX 4.0 and developing with CW 10.5.


I have always been able to build, flash, and debug successfully. However, today I tried to flash the MCU via PE-micro USB-multi-link connection (as I always have), and got the notification "Warning device is secure. Erase to unsecure? ". I clicked Yes to continue with the process, and immediately lost connection with the processor, as if I had unplugged it. The processor is getting power, and the USB-multi-link connector recognizes the hardware connection (yellow LED on), however CW can't seem to connect to the device (see image).


Please help! Has anyone ran across this issue before?