The board was working fine but all of the sudden I can't download any code on it from Keil. Whenever I try to download code on the board, I get
"Could not find Cortex-M device in the JTAG chain! Please check the JTAG cable and connection devices"
I tried a couple of different cables but didn't work. What can be causing the problem?
Did you get anu documentation with your board?
Have you read the documentation for the processor, and then verified how the processor behaves at boot and cross-correlated this with straps or pin assignments on your board?
Suddenly I got the same problem with Tiva-C LaunchPad. Is there any answer?