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How to start executing program on K64F right after power on

Question asked by Antonio Quevedo on Sep 13, 2015
Latest reply on Sep 25, 2015 by Leonardo Bueno

Hello,

 

I am using a FRDM-K64F board in a project, and I am facing a problem. I want my board to start executing the program already flashed into the Targer CPU (K64) right after I power on the board. However, the program only starts after I press the RESET button. I am powering the board through a smartphone charger with micro USB plug, and I have tried both USB connectors (SDA and MCU). When I power the board with the SDA USB connector, I need to use RESET button, and when I power it with the K64 USB connector, not even RESET works. Also, I tried both Segger OpenSDA2 and mbed apps loaded on the OpenSDA controller, and results do not change.

 

I need to use one of the 2 USB connectors to power the board; I do not want to use the 3V3 or 5-9V power input pins on J3. My question is: should I cut some jumper trace, and solder jumper pins? Maybe change some of the already installed jumper setting?

 

Thanks,

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