Author Topic: USB/serial cable for debugging?  (Read 2759 times)

Varti

  • Administrator
  • Hero Member
  • *****
  • Posts: 1085
    • View Profile
USB/serial cable for debugging?
« on: June 12, 2017, 09:41:01 am »
Hi,

I'd like to find a cable for serial debugging for my Akita, to be connected on the user port on the rear. There are some different user port cables around, most of them are USB ones, but I don't know which ones can be used for serial debugging (I'm thinking especially for kexecboot debugging). The only one that I have been told to work is the CE-170TS, which is very difficult to find:

http://www.penguin.cz/~utx/hardware/Sharp_CE-170TS/

I have never been able to find one on the japanese Auction site, while many other cables are usually sold there:

CE-175TU: https://buyee.jp/item/yahoo/auction/j403797862
CE-UC1: https://buyee.jp/item/yahoo/auction/f214752315

Does anybody know if those can be used as well, or if they are only used for syncing, and if they are compatible with an Akita?

Varti
« Last Edit: June 15, 2017, 01:48:27 pm by Varti »
Planet Gemini PDA WiFi/LTE with Mediatek x27
SL-C1000 running Arch Linux ARM May2017, K30225 Wi-Fi CF Card, 64GB SDXC card
and many other Zauruses!

HoloVector

  • Hero Member
  • *****
  • Posts: 533
    • View Profile
    • http://
USB/serial cable for debugging?
« Reply #1 on: June 15, 2017, 12:10:22 pm »
Quote from: Varti
Hi,

I'd like to find a cable for serial debugging for my Akita, to be connected on the user port on the rear. They are some different user port cables around, most of them are USB ones, but I don't know which ones can be used for serial debugging (I'm thinking especially for kexecboot debugging). The only one that I have been told to work is the CE-170TS, which is very difficult to find:

http://www.penguin.cz/~utx/hardware/Sharp_CE-170TS/

I have never been able to find one on the japanese Auction site, while many other cables are usually sold there:

CE-175TU: https://buyee.jp/item/yahoo/auction/j403797862
CE-UC1: https://buyee.jp/item/yahoo/auction/f214752315

Does anybody know if those can be used as well, or if they are only used for syncing, and if they are compatible with an Akita?

Varti
The Akita's serial port doesn't provide enough power to run those USB cables. Trisoft confirmed that as well. Only the CE-170TS can work with the 3.3v that it puts out.  There is one on eBay at the moment.  It has a make offer so you be able to get it for cheaper than that.
I think I'm coming down with what kahm's got!  I now have 3 Zaurii in house!  ;)
Current: Zaurus SL-C3200 -  Bobby (Configuring pdaXii13 Akita with Full 5.4.9 upgrade running IceWM)
Zaurus SL-C1000 - Hachiko (Configuring Cacko 1.23 with evilJazz's new kernel)
Zaurus SL-C860 - Fett (Customized Cacko 1.23 with handmade Boba Fett Theme)
Symbol WiFi CF card|Buffalo WiFi CF Card|Buffalo Ethernet CF Card|Red Piel Frama Case|PDAir Case|Black Pelican 1020 Case|Pentopia Stylii|SaruTek Protectors|Transcend SDs (4GB 150X, 1GB 80X, 256MB 45X, 128MB 45X)|2GB PNY SD|2GB SanDisk SD|Transcend CFs (1GB 80X, 512MB 80X)|Sandisk CFs (4GB, 512MB, 256MB)|256MB Netac USB-CF|RH-1 Remote
Check out the ScummVM@tyrannozaurus page if you are an "adventurer" type of person.

Varti

  • Administrator
  • Hero Member
  • *****
  • Posts: 1085
    • View Profile
USB/serial cable for debugging?
« Reply #2 on: June 16, 2017, 02:41:06 pm »
Thanks for the info. Does this limited support of cables apply to Akitas only, or to the SL-C3xxx as well? Thanks also for the Ebay link, 99 pounds (=113 euros!) is way too much for such a cable, that's the price of a full Zaurus... I have made him an offer of 15 euros, I don't think he'll accept it though...

Varti
Planet Gemini PDA WiFi/LTE with Mediatek x27
SL-C1000 running Arch Linux ARM May2017, K30225 Wi-Fi CF Card, 64GB SDXC card
and many other Zauruses!

HoloVector

  • Hero Member
  • *****
  • Posts: 533
    • View Profile
    • http://
USB/serial cable for debugging?
« Reply #3 on: June 16, 2017, 03:45:13 pm »
Yes, this applies to the entire Cxxxx series.  During the system board redesign, the 5V lines used for the serial port on the Cxxx were redirected to the USB host port instead thus leaving the Cxxxx series serial port with only 3.3V lines and it being downgraded to a diagnostic port only.  

I seem to remember that the fellow who added internal wifi and Bluetooth to his Akita used the second cf port 5V power traces to run these added devices and he theorized that they could be used to up the power to the diagnostic port.
« Last Edit: June 16, 2017, 03:46:38 pm by HoloVector »
I think I'm coming down with what kahm's got!  I now have 3 Zaurii in house!  ;)
Current: Zaurus SL-C3200 -  Bobby (Configuring pdaXii13 Akita with Full 5.4.9 upgrade running IceWM)
Zaurus SL-C1000 - Hachiko (Configuring Cacko 1.23 with evilJazz's new kernel)
Zaurus SL-C860 - Fett (Customized Cacko 1.23 with handmade Boba Fett Theme)
Symbol WiFi CF card|Buffalo WiFi CF Card|Buffalo Ethernet CF Card|Red Piel Frama Case|PDAir Case|Black Pelican 1020 Case|Pentopia Stylii|SaruTek Protectors|Transcend SDs (4GB 150X, 1GB 80X, 256MB 45X, 128MB 45X)|2GB PNY SD|2GB SanDisk SD|Transcend CFs (1GB 80X, 512MB 80X)|Sandisk CFs (4GB, 512MB, 256MB)|256MB Netac USB-CF|RH-1 Remote
Check out the ScummVM@tyrannozaurus page if you are an "adventurer" type of person.

Dromede

  • Full Member
  • ***
  • Posts: 155
    • View Profile
    • http://
USB/serial cable for debugging?
« Reply #4 on: October 17, 2017, 03:57:43 pm »
I most probably have one lying in a drawer somewhere, PM or email me.

Varti

  • Administrator
  • Hero Member
  • *****
  • Posts: 1085
    • View Profile
USB/serial cable for debugging?
« Reply #5 on: October 18, 2017, 04:58:42 am »
Quote from: Dromede
I most probably have one lying in a drawer somewhere, PM or email me.
Thanks Dromede, PM sent. And welcome back

Varti
Planet Gemini PDA WiFi/LTE with Mediatek x27
SL-C1000 running Arch Linux ARM May2017, K30225 Wi-Fi CF Card, 64GB SDXC card
and many other Zauruses!