SPI, debugging, errors, need help!

Posted on March 29, 2012 at 10:16

The original post was too long to process during our migration. Please click on the attachment to read the original post.

This topic has been closed for replies.

Associate

Posted on March 30, 2012 at 04:00

Just make sure that the circuit is not drawing too much current.. for example LCD backlight ..

or SPI pins accidently/momentatrily shorted to VDD/Gnd. causing the 3.3V to drop...Ths may cause the Debugger to fail.

I guess you may have verified that the board is fine by running another firmware

Associate II

Posted on March 30, 2012 at 05:23

Failed to read CPUID for Cortex device

> It seems like JTAG works fail. I suggest check the setting of your J-Link.

Can you post more fail information?

Simon

Sign up