Ok,
Here we go.
I have just received the source code to several PSP apps that use the serial port on the PSP
I do have to thank him for this code !
This port is a standard serial port 4800b N 8 1.
We will start a new post as the project starts so people can follow along.
If you want power from that connector there are several procedures that need to be done.
Yes we can get 2.5 volts from the headphone connector !
Yes there is two way standard serial communication in and out that port !!
Yes I now have the code that will allow communications to the PSP.
I can map the input from this port to an app that will remap the internal keys.
The existing hardware only supports 5 keys.
With the software I can now expand that to as many as you want.
You could for instance take a PS2 joystick and make a cable with a PIC cpu in the
middle of the cable and put the PSP connector on the other end and plug it
in.
I will take two pieces of software and try to marry the two together so
you can remap the joystick buttons to the internal buttons.
I will have a proof of concept done in a couple of weeks to show.
Yes you will be able to interface a folding keypad to the the PSP.
The big hurdle was the software, now that I have that we should be
able to make just about anything you want interface to the PSP through
the headphone port.
You can even buy premade cables that look like this:
You would just wire the cable into your joystick, wire the buttons to a PIC
and plug it in.
Configure the remapping table to map what keys on the remote map to
the internal keys.
(You could have different mappings for different games even )
So will let you know the progress.
I will do the same with this that I am doing with the USB HOST/MASS storage project.
I will post at all stages so people can build along with me.
