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My PSPi project!Updating  

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skin008
(@skin008)
New Member
Joined:7 months  ago
Posts: 4
July 10, 2017 12:39 pm  

hi,this is my pspi project,I finished audio part and display part

 DSC2264 副本
 DSC2264 副本

 DSC2271 副本
 DSC2271 副本
 DSC2271 副本
 DSC2271 副本


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skin008
(@skin008)
New Member
Joined:7 months  ago
Posts: 4
July 10, 2017 12:44 pm  

Display board is a demo board just for debug. LCD driven using GPIO.

 


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othermod
(@othermod)
Reputable Member Admin
Joined:1 year  ago
Posts: 273
July 10, 2017 2:58 pm  

Beautiful work. I'll be making a daughter board similar to that for the all-in-one. What all is that smaller board able to do? I see two ICs.

Also, I'm curious what microSD port you went with.

Edited: 6 months  ago

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skin008
(@skin008)
New Member
Joined:7 months  ago
Posts: 4
July 10, 2017 3:21 pm  

This small board is a usb soundcard,I used CM108AH and soud amplifier PAM8403.

My main board will use a usb hub chip .

As I work in a IC design company,and our company has some game joystick related chips,I have tryed to use it,and it works now.And it has analog joystick input.

The lcd Boost IC is also our company‘s product,it works well and very small.

I used a TF card slot.


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skin008
(@skin008)
New Member
Joined:7 months  ago
Posts: 4
July 10, 2017 3:35 pm  

This board is my test board.

Although it works properly,there's an audio automatic switch problem that hasn't been solved yet.

Sony's audio socket is different from the PC audio socket, and I don't have a good way to detect headphone insertion at the moment.

I want to when  plug in the headphone ,it will shut down the speakers.

Edited: 6 months  ago

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othermod
(@othermod)
Reputable Member Admin
Joined:1 year  ago
Posts: 273
July 10, 2017 3:51 pm  
Posted by: skin008

This board is my test board.

Although it works properly,there's an audio automatic switch problem that hasn't been solved yet.

Sony's audio socket is different from the PC audio socket, and I don't have a good way to detect headphone insertion at the moment.

I want to when  plug in the headphone ,it will shut down the speakers.

The audio jack does work differently. Usually they connect to GND but this one connects to either L or R (I think L but can't remember for sure). You'll basically need to invert it so that when it's not connected (the headphone pin will be floating or pulled to GND) the amplifier EN pin gets VCC, and when the headphone is pushed in (the pin will get around 2.5v, but might need to be smoothed with an RC filter) the EN pin on the amp goes to GND. 


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