/*
* PSP Software Development Kit - http://www.pspdev.org
* -----------------------------------------------------------------------
* Licensed under the BSD license, see LICENSE in PSPSDK root for details.
*
* main.c - Sample to demonstrate USB Mass Storage functionality
*
* Copyright (c) 2005 John Kelley <ps2dev@kelley.ca>
*
* Derived from code written by PspPet
* Code flow and API usage from VSH module "sysconf_plugin.prx"
*
* $Id: main.c 1882 2006-04-24 00:25:11Z jim $
*/
#include <pspkernel.h>
#include <pspiofilemgr.h>
#include <pspmodulemgr.h>
#include <pspdisplay.h>
#include <pspdebug.h>
#include <pspusb.h>
#include <pspusbstor.h>
#include <pspthreadman.h>
#include <pspctrl.h>
#include <pspsdk.h>
/**
* Define the module info section
*
* 2nd arg must 0x1000 so __init is executed in
* kernelmode for our loaderInit function
*/
PSP_MODULE_INFO("USBSample", 0x1000, 1, 0);
/**
* THREAD_ATTR_USER causes the thread that the startup
* code (ctr0.c) starts this program in to be in usermode
* even though the module was started in kernelmode
*/
PSP_MAIN_THREAD_ATTR(THREAD_ATTR_USER);
/* Define printf, just to make typing easier */
#define printf pspDebugScreenPrintf
//make this global so we can check it in the exit_callback
u32 state;
/**
* Function that is called from _init in kernelmode before the
* main thread is started in usermode.
*/
__attribute__ ((constructor))
void loaderInit()
{
pspKernelSetKernelPC();
pspSdkInstallNoDeviceCheckPatch();
pspDebugInstallKprintfHandler(NULL);
}
/* Exit callback */
int exit_callback(int arg1, int arg2, void *common)
{
int retVal;
//cleanup drivers
if (state & PSP_USB_ACTIVATED) {
retVal = sceUsbDeactivate(0);
if (retVal != 0)
printf("Error calling sceUsbDeactivate (0x%08X)\n", retVal);
}
retVal = sceUsbStop(PSP_USBSTOR_DRIVERNAME, 0, 0);
if (retVal != 0)
printf("Error stopping USB Mass Storage driver (0x%08X)\n",
retVal);
retVal = sceUsbStop(PSP_USBBUS_DRIVERNAME, 0, 0);
if (retVal != 0)
printf("Error stopping USB BUS driver (0x%08X)\n", retVal);
sceKernelExitGame();
return 0;
}
/* Callback thread */
int CallbackThread(SceSize args, void *argp)
{
int cbid;
cbid = sceKernelCreateCallback("Exit Callback", exit_callback, NULL);
sceKernelRegisterExitCallback(cbid);
sceKernelSleepThreadCB();
return 0;
}
/* Sets up the callback thread and returns its thread id */
int SetupCallbacks(void)
{
int thid = 0;
thid = sceKernelCreateThread("update_thread", CallbackThread,
0x11, 0xFA0, 0, 0);
if (thid >= 0) {
sceKernelStartThread(thid, 0, 0);
}
return thid;
}
//helper function to make things easier
int LoadStartModule(char *path)
{
u32 loadResult;
u32 startResult;
int status;
loadResult = sceKernelLoadModule(path, 0, NULL);
if (loadResult & 0x80000000)
return -1;
else
startResult =
sceKernelStartModule(loadResult, 0, NULL, &status, NULL);
if (loadResult != startResult)
return -2;
return 0;
}
int main(void)
{
SceCtrlData pad;
u32 oldButtons = 0;
u32 retVal;
state = 0;
pspDebugScreenInit();
pspDebugScreenClear();
SetupCallbacks();
//setup Pad
sceCtrlSetSamplingCycle(0);
sceCtrlSetSamplingMode(0);
//print header now in case we have any errors
printf("USB Sample v1.0 by John_K - Based off work by PSPPet\n");
//start necessary drivers
LoadStartModule("flash0:/kd/semawm.prx");
LoadStartModule("flash0:/kd/usbstor.prx");
LoadStartModule("flash0:/kd/usbstormgr.prx");
LoadStartModule("flash0:/kd/usbstorms.prx");
LoadStartModule("flash0:/kd/usbstorboot.prx");
//setup USB drivers
retVal = sceUsbStart(PSP_USBBUS_DRIVERNAME, 0, 0);
if (retVal != 0) {
printf("Error starting USB Bus driver (0x%08X)\n", retVal);
sceKernelSleepThread();
}
retVal = sceUsbStart(PSP_USBSTOR_DRIVERNAME, 0, 0);
if (retVal != 0) {
printf("Error starting USB Mass Storage driver (0x%08X)\n",
retVal);
sceKernelSleepThread();
}
retVal = sceUsbstorBootSetCapacity(0x800000);
if (retVal != 0) {
printf
("Error setting capacity with USB Mass Storage driver (0x%08X)\n",
retVal);
sceKernelSleepThread();
}
retVal = 0;
//if everything worked we now enter our main loop
for (;;) {
sceCtrlReadBufferPositive(&pad, 1);
state = sceUsbGetState();
pspDebugScreenSetXY(0, 0);
printf("USB Sample v1.0 by John_K - Based off work by PSPPet\n\n");
printf("%-14s: %s\n", "USB Driver",
state & PSP_USB_ACTIVATED ? "activated " :
"deactivated");
printf("%-14s: %s\n", "USB Cable",
state & PSP_USB_CABLE_CONNECTED ? "connected " :
"disconnected");
printf("%-14s: %s\n", "USB Connection",
state & PSP_USB_CONNECTION_ESTABLISHED ? "established" :
"not present");
printf("\nPress X to establish or destroy the USB connection\n");
if (oldButtons != pad.Buttons) {
if (pad.Buttons & PSP_CTRL_CROSS) {
if (state & PSP_USB_ACTIVATED)
retVal = sceUsbDeactivate(0x1c8);
else
retVal = sceUsbActivate(0x1c8);
}
}
oldButtons = pad.Buttons;
sceDisplayWaitVblankStart();
}
//Exit program
sceKernelExitGame();
return 0;
}
Subject: USB Example 
Thu Sep 30, 2010 8:01 pm
