(02-17-2021, 03:38 PM)LazLong Wrote:(02-17-2021, 01:54 PM)z3dd1cu55 Wrote: sorry for the maybe dumb question. But what's a "serial debug cable"No dumb questions.
It is a 'usb to serial' adapter/cable device used to commmunicate and monitor/debug the boot up and system processes in single board computers and other devices.
Check out the wiki: https://wiki.pine64.org/wiki/PinePhone#Serial_console
Note that a search in the forum with keywords such as 'Serial Console", "Serial Debug" "Serial Cable" will retrieve multiple discussions including a 3.3V/5V controversy regarding the PINEBOOK(Pro)/PINEPHONE/PINETAB SERIAL CONSOLE offered for $6.99 in the Pine Store
Various serial console debug devices are available from other retailers. They may be either based on the CH340 or the FTDI TTL-232R chipset. I have a FTDI.
Others may have words of wisdom. Welcome and good luck.
Thanks for the answere.
So if I already have USB <-> D-Sub 9 adapter. Would it work to make a D-Sub 9 to headphone adapter by using one of each splicing the cables and connect the cables with the right pin order?
And if I had a working serial debug cable, when would I log in to set the bit for eeprom flash? Anytime after the normal boot? Or do I need to stop the bootloader from booting the kernel?
Do I need this serial debug cable or can I set the bit from userland?
Any feedback is appreciated
