This is merely a historical archive of years 2008-2021, before the migration to mailman3.
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Kevin Redon kevredon at mail.tsaitgaist.infocorrections added : https://gsm.tsaitgaist.info/SIMtrace/v0.7+/ >> - bootloader switch added > > see my comment from the last mail pull-down added >> - jack connector added (for the debug) >> - WP from flash connected > > great. Does the SAM7 have an internal pull-down on nWP? If not, we > should add one, just to be sure the power-up default state is LOW. pull-down added > > I am not familiar with USB buffers? How do they work? It's not a buffer (just me not knowing what I do). It's just and emi filter, replacing the R and C for the USB. > > So I don't really see a choice but to have a software-controlled USB > reset option. Once again, we know that this part is working in OpenPCD > 0.4 (we had a couple of earlier versions, and they all had some > shortcomings). It's really useful to have both the nRESET as well as > the GPIO controlled usb-pullup (called UDP_PUP) in OpenPCD. That is the part I never understood in openPCD. What was the purpose of USB_PUP ? Now I understand (finally). Thus I did the same as openPCD now. Waiting for next corrections, Kevin