![](/media/cache/img/default_profile.jpg.50x50_q85.jpg)
Student project by David Berlin and Boris Dogadov made for the Embedded Systems Workshop course given in Tel-Aviv University on 2010 by Sivan Toledo. Visit the project website for more details: http://davidberlin.co.il/sadna/ .
Dependencies: EthernetNetIf NTPClient_NetServices mbed HTTPServer HTTPClient CyaSSL
Diff: USBHost/AutoEvents.cpp
- Revision:
- 0:3e7d6f496a67
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/USBHost/AutoEvents.cpp Sun Apr 17 21:30:10 2011 +0000 @@ -0,0 +1,154 @@ + +/* +Copyright (c) 2010 Peter Barrett + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in +all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN +THE SOFTWARE. +*/ + +#include "mbed.h" +#include "USBHost.h" +#include "Utils.h" + +#define AUTOEVT(_class,_subclass,_protocol) (((_class) << 16) | ((_subclass) << 8) | _protocol) +#define AUTO_KEYBOARD AUTOEVT(CLASS_HID,1,1) +#define AUTO_MOUSE AUTOEVT(CLASS_HID,1,2) + +u8 auto_mouse[4]; // buttons,dx,dy,scroll +u8 auto_keyboard[8]; // modifiers,reserved,keycode1..keycode6 +u8 auto_joystick[4]; // x,y,buttons,throttle + +void AutoEventCallback(int device, int endpoint, int status, u8* data, int len, void* userData) +{ + int evt = (int)userData; + switch (evt) + { + case AUTO_KEYBOARD: + printf("AUTO_KEYBOARD "); + break; + case AUTO_MOUSE: + printf("AUTO_MOUSE "); + break; + default: + printf("HUH "); + } + printfBytes("data",data,len); + USBInterruptTransfer(device,endpoint,data,len,AutoEventCallback,userData); +} + +// Establish transfers for interrupt events +void AddAutoEvent(int device, InterfaceDescriptor* id, EndpointDescriptor* ed) +{ + if ((ed->bmAttributes & 3) != ENDPOINT_INTERRUPT || !(ed->bEndpointAddress & 0x80)) + return; + + // Make automatic interrupt enpoints for known devices + u32 evt = AUTOEVT(id->bInterfaceClass,id->bInterfaceSubClass,id->bInterfaceProtocol); + u8* dst = 0; + int len; + switch (evt) + { + case AUTO_MOUSE: + dst = auto_mouse; + len = sizeof(auto_mouse); + break; + case AUTO_KEYBOARD: + dst = auto_keyboard; + len = sizeof(auto_keyboard); + break; + default: + printf("Interrupt endpoint %02X %08X\n",ed->bEndpointAddress,evt); + break; + } + if (dst) + { + printf("Auto Event for %02X %08X\n",ed->bEndpointAddress,evt); + USBInterruptTransfer(device,ed->bEndpointAddress,dst,len,AutoEventCallback,(void*)evt); + } +} + +void PrintString(int device, int i) +{ + u8 buffer[256]; + int le = GetDescriptor(device,DESCRIPTOR_TYPE_STRING,i,buffer,255); + if (le < 0) + return; + char* dst = (char*)buffer; + for (int j = 2; j < le; j += 2) + *dst++ = buffer[j]; + *dst = 0; + printf("%d:%s\n",i,(const char*)buffer); + } + +// Walk descriptors and create endpoints for a given device +int StartAutoEvent(int device, int configuration, int interfaceNumber) +{ + u8 buffer[255]; + int err = GetDescriptor(device,DESCRIPTOR_TYPE_CONFIGURATION,0,buffer,255); + if (err < 0) + return err; + + int len = buffer[2] | (buffer[3] << 8); + u8* d = buffer; + u8* end = d + len; + while (d < end) + { + if (d[1] == DESCRIPTOR_TYPE_INTERFACE) + { + InterfaceDescriptor* id = (InterfaceDescriptor*)d; + if (id->bInterfaceNumber == interfaceNumber) + { + d += d[0]; + while (d < end && d[1] != DESCRIPTOR_TYPE_INTERFACE) + { + if (d[1] == DESCRIPTOR_TYPE_ENDPOINT) + AddAutoEvent(device,id,(EndpointDescriptor*)d); + d += d[0]; + } + } + } + d += d[0]; + } + return 0; +} + +// Implemented in main.cpp +int OnDiskInsert(int device); + +void OnLoadDevice(int device, DeviceDescriptor* deviceDesc, InterfaceDescriptor* interfaceDesc) +{ + printf("LoadDevice %d %02X:%02X:%02X\n",device,interfaceDesc->bInterfaceClass,interfaceDesc->bInterfaceSubClass,interfaceDesc->bInterfaceProtocol); + char s[128]; + for (int i = 1; i < 3; i++) + { + if (GetString(device,i,s,sizeof(s)) < 0) + break; + printf("%d: %s\n",i,s); + } + + switch (interfaceDesc->bInterfaceClass) + { + case CLASS_MASS_STORAGE: + if (interfaceDesc->bInterfaceSubClass == 0x06 && interfaceDesc->bInterfaceProtocol == 0x50) + OnDiskInsert(device); // it's SCSI! + break; + default: + StartAutoEvent(device,1,0); + break; + } +} \ No newline at end of file