On 7/26/13, Steve Markgraf steve@steve-m.de wrote:
None, actually. I just directly soldered some pieces of enamelled wire to the pads of the footprint.
Got it. I thought initially that populating the "proper" connector on there (an FPC one, no doubt) would probably be cleaner, but then one would need a custom-made FPC cable to go with that... too expensive. :(
I used a Bus Blaster v2, but any other adapter that is supported by OpenOCD and can handle 3.3V levels should work fine. (Actually the Calypso uses 2.8V IO-levels, but 3.3V works anyway).
Thanks for the info. At my day job we have some other jtaggers (don't remember the make & model) that appear to be similar (also based on the FTDI chip) - when I'm back at work, I'll take a look and see if they support 3.3V or 2.8V.
I soldered the wires to a 0.1" pin header, and then used a few 1 pin female-female jumper wires to connect them to the Bus Blaster.
Sounds reasonable... will probably do the same or similar once I get my own BB or a similar jtagger.
Now while I have your attention... I'm trying to gain a better understanding of the display subsystem on this phone - maybe even get the camera to work (dreaming). I wonder, has anyone been able to find a datasheet or other docs for the SPCA552E chip? The code that's currently in git implements a combined driver for the S6B33B1X and this Sunplus chip; the datasheet for the S6B33B1X was readily findable via Google, but not the other chip.
If no one ever succeeded in finding any docs for the SPCA552E, I wonder where the comments on lines 110-123 of src/target/firmware/fb/fb_s6b33b1x.c came from...
Kim