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dmolinagarcia / nova64

noVa-64 Computer. A new-retro 16-bit laptop
https://dmolinagarcia.github.io/nova64/
GNU General Public License v3.0
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BL702 UART+JTAG #2

Open dmolinagarcia opened 1 year ago

dmolinagarcia commented 1 year ago

Explore the options to use the BL702 onboard the TANG NANO 1k as a dual UART+JTAG. Compare the TANG schematich agaings the dual uart schematic on sipeed github.

Try to reflash the BL702 on board the Tang Nano. I think the boot button is not available though.

It will be on the outer board (ciama2k prototipe). Give it a try there.

dmolinagarcia commented 1 year ago

The boot button is not on the board. Also, the pull up resistor isn't there either. The pulldown is there, but not the pull up. Everything is soooo tiny....

dmolinagarcia commented 1 year ago

On the CIAMA2k project, I've managed to reflash the BL702 and have a suitable hardware for a debugger.

But... After this time, this doesn't seem like the best approach. A UART inside the northbridge is the preferred option now.