JTAG communication failure, check connection, JTAG interface, target power etc.
andy at openmoko.com
Wed Jan 7 15:30:37 CET 2009
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Somebody in the thread at some point said:
| --- On Wed, Jan 7, 2009 at 7:06 PM, Andy Green <andy at openmoko.com> wrote:
| | jtag_speed 0
| | Try increasing this, despite "speed" it actually means "delay".
| | Also, only certain magic libftdi versions work, IIRC 0.8 is good.
| I tried 4, 8, 20 for jtag_speed, but, I still get the JTAG
| communication failure error messages. The same desktop setup worked
| earlier, so, I am wondering if it could be due to low battery power on
| the FR?
| The battery status says 57% when directly connected to the PC and doing:
| cat /sys/devices/platform/bq27000-battery.0/power_supply/bat/status
| says "Not Charging" on (ASU-200811142247). Is there a minimal X %
| battery status required when connected to the debug board for JTAG to
Nope, if the processor is running the JTAG should be able to work.
About the charging problem, you might want to try andy-tracking based
kernel, the charging should work reliably there.
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