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About USB Connecting on ePSP

Open discussions on programming specifically for the PS Vita.
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173210
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About USB Connecting on ePSP

Post by 173210 » Sun Feb 10, 2013 9:31 am

I can connect ePSP-PC on USB.
I used a game sold in Japan.
Its name is "Jikkyo Pawafuru Puro Yakyuu" (実況パワフルプロ野球)
I tested on normal-boot and eCFW.
But I CANNOT use to do anything without transfer its savedata to PS3.
I used PRXTool to know how to use USB.

Code: Select all

Import 33, Name sceUsb, Functions 4, Variables 0, flags 40090011
Functions:
0x586DB82C [0x08B12584] - sceUsbActivate
0xAE5DE6AF [0x08B1258C] - sceUsbStart
0xC2464FA0 [0x08B12594] - sceUsbStop
0xC572A9C8 [0x08B1259C] - sceUsbDeactivate
I thought that I must use only them when I connect USB on ePSP.
But I could NOT connect USB.

EDIT:When I connected PSP(NOT ePSP)-PC on the game, displayed "PSP" Type D.
Its hardware ID was USB\VID_054C&PID_01CB&REV_0100 (On PSP)
I uploaded disassembled EBOOT.BIN
Look it.

Sorry for my bad English.
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Last edited by 173210 on Mon Feb 11, 2013 12:07 pm, edited 4 times in total.
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Acid_Snake
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Re: About USB Connecting on ePSP

Post by Acid_Snake » Sun Feb 10, 2013 10:19 am

ePSP doesn't have usb.prx and even if it did, the vita doesn't emulate the usb port
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tomtomdu80
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Re: About USB Connecting on ePSP

Post by tomtomdu80 » Sun Feb 10, 2013 10:24 am

What you got with PRXTool is just normal PSP USB functions, these functions are included in PSPSDK, but the vita cannot use them (As Acid_Snake said^^)

173210
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Re: About USB Connecting on ePSP

Post by 173210 » Sun Feb 10, 2013 10:37 am

tomtomdu80 wrote:What you got with PRXTool is just normal PSP USB functions, these functions are included in PSPSDK, but the vita cannot use them (As Acid_Snake said^^)
Acid_Snake wrote:ePSP doesn't have usb.prx and even if it did, the vita doesn't emulate the usb port
That's right.
But the game can use them.
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Acid_Snake
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Re: About USB Connecting on ePSP

Post by Acid_Snake » Sun Feb 10, 2013 10:46 am

yup, but you won't get an actual usb connection for data transfer, unless there's something hidden in kermit that we don't know about

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