Sergio Collado / Mbed 2 deprecated USBHostShell_HID_talkactive_alpha

this is the Peter Barrett USBHostShell program, a bit modified for being a bit more talkactive, just to let u know how the USB protocol layer is going on, and all the data trasnfers. Also there is a small implementation of HID descriptors, but not functional... yet :S the aim is to at least implement the gamepad HID, and make an array of function pointer to each HID function

Dependencies:   mbed

AutoEvents.cpp@0:e1e03118b8fe, 2010-09-13 (annotated)

Committer:
Sergio
Date:
Mon Sep 13 12:40:05 2010 +0000
Revision:
0:e1e03118b8fe

        

        
Who changed what in which revision?

        

            
                
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/*





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Copyright (c) 2010 Peter Barrett





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Permission is hereby granted, free of charge, to any person obtaining a copy





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of this software and associated documentation files (the "Software"), to deal





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in the Software without restriction, including without limitation the rights





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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell





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copies of the Software, and to permit persons to whom the Software is





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furnished to do so, subject to the following conditions:





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The above copyright notice and this permission notice shall be included in





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all copies or substantial portions of the Software.





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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR





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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,





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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE





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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER





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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,





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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN





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THE SOFTWARE.





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*/





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#include "mbed.h"





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#include "USBHost.h"





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#include "Utils.h"





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#define AUTOEVT(_class,_subclass,_protocol) (((_class) << 16) | ((_subclass) << 8) | _protocol)





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#define AUTO_KEYBOARD AUTOEVT(CLASS_HID,1,1)





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#define AUTO_MOUSE AUTOEVT(CLASS_HID,1,2)





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u8 auto_mouse[4];       // buttons,dx,dy,scroll





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u8 auto_keyboard[8];    // modifiers,reserved,keycode1..keycode6





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u8 auto_joystick[4];    // x,y,buttons,throttle





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void AutoEventCallback(int device, int endpoint, int status, u8* data, int len, void* userData)





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{





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    int evt = (int)userData;





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    switch (evt)





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    {





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        case AUTO_KEYBOARD:





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            printf("AUTO_KEYBOARD ");





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            break;





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        case AUTO_MOUSE:





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            printf("AUTO_MOUSE ");





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            break;





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        default:





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            printf("HUH ");





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    }





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    printfBytes("data",data,len);





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    USBInterruptTransfer(device,endpoint,data,len,AutoEventCallback,userData);





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}





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//  Establish transfers for interrupt events





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void AddAutoEvent(int device, InterfaceDescriptor* id, EndpointDescriptor* ed)





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{





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    if ((ed->bmAttributes & 3) != ENDPOINT_INTERRUPT || !(ed->bEndpointAddress & 0x80))





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        return;





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    // Make automatic interrupt enpoints for known devices





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    u32 evt = AUTOEVT(id->bInterfaceClass,id->bInterfaceSubClass,id->bInterfaceProtocol);





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    u8* dst = 0;





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    int len;





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    switch (evt)





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    {





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        case AUTO_MOUSE:





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            dst = auto_mouse;





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            len = sizeof(auto_mouse);





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            break;





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        case AUTO_KEYBOARD:





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            dst = auto_keyboard;





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            len = sizeof(auto_keyboard);





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            break;





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        default:





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            printf("Interrupt endpoint %02X %08X\n",ed->bEndpointAddress,evt);





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            break;





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    }





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    if (dst)





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    {





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        printf("Auto Event for %02X %08X\n",ed->bEndpointAddress,evt);





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        USBInterruptTransfer(device,ed->bEndpointAddress,dst,len,AutoEventCallback,(void*)evt);





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    }





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}





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void PrintString(int device, int i)





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{





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    u8 buffer[256];





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    int le = GetDescriptor(device,DESCRIPTOR_TYPE_STRING,i,buffer,255);





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    if (le < 0)





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         return;





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    char* dst = (char*)buffer;





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    for (int j = 2; j < le; j += 2)





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        *dst++ = buffer[j];





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    *dst = 0;





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    printf("%d:%s\n",i,(const char*)buffer);





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 }





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//  Walk descriptors and create endpoints for a given device





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int StartAutoEvent(int device, int configuration, int interfaceNumber)





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{





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    u8 buffer[255];





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    int err = GetDescriptor(device,DESCRIPTOR_TYPE_CONFIGURATION,0,buffer,255);





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    if (err < 0)





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        return err;





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    int len = buffer[2] | (buffer[3] << 8);





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    u8* d = buffer;





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    u8* end = d + len;





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    while (d < end)





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    {





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        if (d[1] == DESCRIPTOR_TYPE_INTERFACE)





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        {





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            InterfaceDescriptor* id = (InterfaceDescriptor*)d;





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            if (id->bInterfaceNumber == interfaceNumber)





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            {





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                 d += d[0];





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                while (d < end && d[1] != DESCRIPTOR_TYPE_INTERFACE)





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                {





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                    if (d[1] == DESCRIPTOR_TYPE_ENDPOINT)





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                        AddAutoEvent(device,id,(EndpointDescriptor*)d);





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                    d += d[0];





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                }





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            }





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        }





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        d += d[0];





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    }





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    return 0;





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}





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//  Implemented in main.cpp





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int OnDiskInsert(int device);





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void OnLoadDevice(int device, DeviceDescriptor* deviceDesc, InterfaceDescriptor* interfaceDesc)





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{





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    printf("LoadDevice %d %02X:%02X:%02X\n",device,interfaceDesc->bInterfaceClass,interfaceDesc->bInterfaceSubClass,interfaceDesc->bInterfaceProtocol);





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    char s[128];





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    for (int i = 1; i < 3; i++)





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    {





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        if (GetString(device,i,s,sizeof(s)) < 0)





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            break;





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        printf("%d: %s\n",i,s);





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    }





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    switch (interfaceDesc->bInterfaceClass)





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    {





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        case CLASS_MASS_STORAGE:





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            if (interfaceDesc->bInterfaceSubClass == 0x06 && interfaceDesc->bInterfaceProtocol == 0x50)





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                OnDiskInsert(device);    // it's SCSI!





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            break;





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        default:





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            StartAutoEvent(device,1,0);





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            break;





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    }





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}