Doug Clarke asked 3 years ago
So,
I’m trying to do debugging of my code that uses light sleep.
When I use the built-in USB/JTAG interface, opened disconnects and dies when the DEV board goes into light sleep.
It seems that the USB port goes away because it is powered down.
Questions.
1) Is there a what to force the chip to keep the UAB/JTAG powered up during debug?
2) If I have an external USB to JTAG pod and connect to the four JTAG pins of the dev board, will that work through light-sleep, or will it fail as well when the JTAG is powered down?
Thanks.
Doug Clarke answered 3 years ago
I got an answer from Expressive.
The answer to both questions is no.
- The USB goes away when it goes to sleep and so drops the connection to openocd.
- The JTAG goes away when it goes to sleep and openocd doesn’t;t know how to reconnect when using an external USB/JTAG pod.
So when working with light sleep, its printf and DIOs/LEDs for debugging.
Sara Santos Staff answered 3 years ago
Hi.
I also thought so, but I wasn’t sure.
Thanks for sharing the answer.
I’ll close this issue.
Regards,
Sara