Tuesday, September 8, 2009

Good news on Gemei x760+


Today I installed the serial console connector on the Gemei x760+ and had a chance to examine the hardware a bit better. I would say that except for the buttons and the LCD the hardware is exactly equal. Same CPU, same SDRAM, same FM chip, same TV-out chip, etc.

I tried to boot dingux straight to SDRAM vía USB boot mode and everything worked, except that the kernel paniced because I had no SD/MMC card inserted and thus no rootfs in place. I could see the LCD backlight blinking, so the same GPIO pin is used to control it.

As I mentioned in the previous post test point 1 (TP1) is the console TX signal, and I confirmed that test point 2 (TP2) is the RX signal.

So, we should have dingux runing on the x760+ in a few weeks. All that's needed is map the GPIO pins (if different from A320) and disassemble the hardware initialization code in the unbricker tool to get the LCD initialization code.

I would say the donated money has been put to good use :-). Thank you all again.

Offtopic UPDATE 1: I see a problem coming: the lack of start and select keys. On one side, you know that the dingus kernel uses power+start+whatever for special functions (volume, brightness, reboot, etc). On the other side, developers have been porting applications and using the very convenient start and select keys. I would like to hear suggestions on how do deal with that. Besides up/down/left/right and the four "action" buttons, the x760+ has only power and reset buttons.

Offtopic UPDATE 2: I was wrong in the previous post: the x760+ indeed has a power button (not slider), and does charge through USB.

10 comments:

  1. Good for you! Please also, dont' forget visit my Dingoo blog site!

    ReplyDelete
  2. Hi BooBoo, the gemei uses a system of combo of buttons to compensate the lack of buttons. What about using combinations like power + up and power + down for brightness, power + left and power + right for volume? You could use a combination of buttons in order to boot the dingux.

    ReplyDelete
  3. I had the same problem as you. Whenever I tried to run Dingux since the early versions, I had Kernel Panic (LCD blinking). About the keys, I igree with Tiago. The best solution is the use keys combinations for these functions and for boot selection: Power + X.

    ReplyDelete
  4. How many buttons does the Gemei x760+ have?

    ReplyDelete
  5. When using emulation the x760+ has keys binded like power+triangle for start and power+square for select things like that perhaps you could bind buttons in a similer way to make up for the fewer buttons.

    ReplyDelete
  6. Well, because of the lack ofo options, maybe "combo buttons" should be the answer, just like eraldo said!

    ReplyDelete
  7. So nothing became true of this promise :P

    ReplyDelete
  8. If you've read the latest posts, I should have by now everything needed to get dingux working on the x760+ (courtesy of ChinaChip), and I'm working on it. Just can't afford to throw as many hours at it as I'd like.

    ReplyDelete