We have a problem with the AM335x:
We use a Linux OS (debian 3.14), which also runs on the Beagle Bone.
In the previous version of debian (3.2), we were able to connect to the PRUS during operation via JTAG and debug this when running the A8 host. Since the OS changes, this is no longer possible.
The effect occurs after passing the uboot. When we stop i uboot, the connection can be made before the kernel starts. Thereafter, the JTAG connection is aborted. CCS5 prints out the following message:
CortxA8: Error: (Error -1204 @ 0x3D5B) Unable to access the DAP. Reset the device, and retry the operation. If error persists, confirm configuration, power-cycle the board, and/or try more reliable JTAG settings (e.g. lower TCLK). (Emulation package 5.1.114.0)
My Target configuration is absolutely the same...
In CCS6 I have the same problem.
Is there a solution for this problem?