DIY: Simple PSP-GPS hookup

[Russoxley187]

Is there any way somebody can tell me what the colors are that have to be connected to a GPSlim236.
I dont want to rip the connectors apart. Just want to cut the cables and connect them.
Thanx

[deniska]

Kyakko, I used the serial port echo program in lua and i get a whole bunch of gibberish but when I load the gps viewer program i get " Connect Plug and turn on GPS".
Deniska, do you have any idea why the program is not working with the gps?

The original "green screen" program was compiled to work with 38400 baud you may need to recompile it to work with 4800 or whatever baud your device is designed for...
The program checks the checksum on all incoming NMEA sentences and would not display anything which did not pass the check...

Gibberish usually suggests incorrect baud setting (I think lua may not be fast enough to handle 4800) or low signal level - in this case you may need to lower resistance (if any) value or use some level convertor cheap in between...

[deniska]

Hi Deniska,

It's me again! I've got some changes I have been testing with my very slow GPS (1s to send a full message, 2s between message starts).

Anyway, after compiling mapthis v03 on my own toolchain, the app runs very oddly. In particular, the splash screen, and every other image, appears as a 1/4 sized, negative png. It's as though I'm missing some important PNG library or something, although I've only gotten the toolchain recently, and I just installed libpng myself.

Am I missing some library your app requires? Any ideas?

-Zero

Actually, I 've got same problem with a tool chain on one of my PCs... Not sure what the root cause of it is, but it has something to do with memory allocation, so to fix it you may need to recompile it with different optimization settings or introduce some large static array - to shift everything a bit...
You may want to try update other libraries as well (like zip, etc)

[Russoxley187]

Help Please.....

[ZeroAltitude]

I figured it out -- thank you for your help Deniska. In another thread, I mention that I have coded up a few new ways to get messages from the serial port. One of them works very well with my very slow GPS. If you'd like to see my code, I'd like to send it to you. Let me know how. I'm [email protected]

-0

[deniska]

Help Please.....

I can't help you with wire colors for two reasons:
1) I sealed my connector with crazy glue
2) I did not use the original USB cable that comes with GPSlim 236 and I do suspect that the original cable may have different colors if any...

So just ping the cables with a multitester...

[deniska]

I figured it out -- thank you for your help Deniska. In another thread, I mention that I have coded up a few new ways to get messages from the serial port. One of them works very well with my very slow GPS. If you'd like to see my code, I'd like to send it to you. Let me know how. I'm [email protected]

-0

Sure, let's see what you've got - just zip up the files that you changed and attach them to this thread (you should be able to manage attachments).

[Russoxley187]

Well,
I bought a multimeter today and some resistors...
cant wait to get home...

[Russoxley187]

ok, I'm at home now,
I can not get one cable to pinout with the ohm meter, If I connect two of the 8 cables together it checks ut, is that possible?
I'm using the White PSP remote..OEM i think.
CAn anyone help me?

[deniska]

ok, I'm at home now,
I can not get one cable to pinout with the ohm meter, If I connect two of the 8 cables together it checks ut, is that possible?
I'm using the White PSP remote..OEM i think.
CAn anyone help me?

According to http://forums.ps2dev.org/viewtopic.php?t=986
Here is the colors used in standard psp remote cable:

1 2 3
- - -
O
- - -
4 5 6

And the jack ones are 7, 8 and 9 (7 is the contact in the end, 8 the middle and 9 the bigger, usually gnd).

They correspond to wires colours;


1 - BROWN
2 - BLUE
3 - ORANGE
4 - GREEN
5 - YELLOW
6 - GREY
7 - PINK
8 - RED
9 - BLACK

As to USB cable - you obly need to find wires for 2 pins that you are going to use.. Note that some pins may not be connected in your particular usb cable...