Hello,
I've recently been evaluating the Tiva Cortex M4 parts. I've downloaded the following during my installation (Windows 7 64 bit): CCS5.5.0.00077_win32.zip, SW-DK-TM4C123G-1.1.exe, TM4C123GLaunchPadWorkshopSetup.exe.
I had been going through the workshop on my home machine and ran into only a few minor issues (qs-rgb example doesn't exist, tm4c123gh6pm.h doesn't exist, USB dev bulk example fails to enumerate). Overall the workshop was very helpful.
I had one final lab (15 PWM) to go through and tried to perform it on my work machine. I noticed the following error messages kept on popping up while downloading/debugging (which was slow and barely functional):
CORTEX_M4_0: Trouble Reading Register PC: Timed out while waiting for target powerup/polling a hardware resource.
CORTEX_M4_0: Trouble Writing Memory Block at 0x400fd0fc on Page 0 of Length 0x4: Timed out while waiting for target powerup/polling a hardware resource.
CORTEX_M4_0: Trouble Reading Register SP: Timed out while waiting for target powerup/polling a hardware resource.
CORTEX_M4_0: Error: Timed out while waiting for target powerup/polling a hardware resource.
CORTEX_M4_0: Can't Single Step Target Program: Timed out while waiting for target powerup/polling a hardware resource.
I did a full reinstall of the 3 programs listed above (CCS, TivaWare and the workshop) on my work machine with no success.
On a whim, I tried switching the launchpad from the USB 3.0 port to the USB 2.0 port. It worked! As an aside, I'd only been using the USB cable supplied with the launchpad, so it shouldn't be an issue with USB extension cables.
This is interesting as the launchpad worked just fine from my home machine through a USB 3.0 port.
Anyways I thought I would make a note so that the dev team can hopefully take a look to see if they have any USB 3.0 compatibility issues with the Stellaris ICDI Drivers.
On my work machine, in USB View, the USB 3.0 is listed as "ASMedia XHCI Controller" with no other devices attached. The USB 2.0 is listed as Intel(R) C600/X79 series chipset USB2 Enhanced Host Controller" with many other devices attached. Both are root hubs on the motherboard.
Thanks
jgros