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majbthrd / pico-debug

virtual debug pod for RP2040 "Raspberry Pi Pico" with no added hardware
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Any way to use pico-debug over UART? #15

Closed MattMills closed 2 years ago

MattMills commented 2 years ago

I need to debug code that uses tinyUSB for it's core functionality (basically, re-implementing the usb mass storage flash interface in normal userspace code alongside serial interfaces), is there any way to use pico-debug without using the USB interface?

Or alternatively, using it via a second pico with an interconnect to SWD and SWCLK?

So far pico-debug is the only debugger I've gotten to work, as picoprobe doesn't seem to have any documentation.

MattMills commented 2 years ago

Actually, I thought of a way to rework the code to test it without tinyUSB and the debugger stops responding as soon I hit my area of interest (a call to flash_range_erase), so while it'd be nice of have a UART based interface it probably won't help me much.

majbthrd commented 2 years ago

I need to debug code that uses tinyUSB for it's core functionality (basically, re-implementing the usb mass storage flash interface in normal userspace code alongside serial interfaces), is there any way to use pico-debug without using the USB interface?

Or alternatively, using it via a second pico with an interconnect to SWD and SWCLK?

So far pico-debug is the only debugger I've gotten to work, as picoprobe doesn't seem to have any documentation.

No, there is no way to use pico-debug over a UART.

If you have a second pico, you might want to try Dapper Mime. It wires in exactly the same as picoprobe, but uses a standard protocol (CMSIS-DAP, the same as what pico-debug uses) instead of a proprietary one.

MattMills commented 2 years ago

Thanks, I've gotten it working in a few minutes after setting up Dapper Mime. You probably already know, but just FYI, Dapper Mime appears to pull all the TinyUSB dependencies 2 or 3 times which makes it quite slow to init.