Peter Barrett
A more capable USB Host. The API supports synchronous and Asynchronous control, interrupt and bulk transfers. It has built in support for hubs and hot plugging. It can support any number of devices and endpoints limited only by sram. The test shell supports mouse, keyboard and mass storage/fat.
AutoEvents.cpp@0:5ad808014a49, 2010-04-02 (annotated)
- Committer:
- peterbarrett1967
- Date:
- Fri Apr 02 22:28:01 2010 +0000
- Revision:
- 0:5ad808014a49
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| peterbarrett1967 | 0:5ad808014a49 | 1 | |
| peterbarrett1967 | 0:5ad808014a49 | 2 | /* |
| peterbarrett1967 | 0:5ad808014a49 | 3 | Copyright (c) 2010 Peter Barrett |
| peterbarrett1967 | 0:5ad808014a49 | 4 | |
| peterbarrett1967 | 0:5ad808014a49 | 5 | Permission is hereby granted, free of charge, to any person obtaining a copy |
| peterbarrett1967 | 0:5ad808014a49 | 6 | of this software and associated documentation files (the "Software"), to deal |
| peterbarrett1967 | 0:5ad808014a49 | 7 | in the Software without restriction, including without limitation the rights |
| peterbarrett1967 | 0:5ad808014a49 | 8 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| peterbarrett1967 | 0:5ad808014a49 | 9 | copies of the Software, and to permit persons to whom the Software is |
| peterbarrett1967 | 0:5ad808014a49 | 10 | furnished to do so, subject to the following conditions: |
| peterbarrett1967 | 0:5ad808014a49 | 11 | |
| peterbarrett1967 | 0:5ad808014a49 | 12 | The above copyright notice and this permission notice shall be included in |
| peterbarrett1967 | 0:5ad808014a49 | 13 | all copies or substantial portions of the Software. |
| peterbarrett1967 | 0:5ad808014a49 | 14 | |
| peterbarrett1967 | 0:5ad808014a49 | 15 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| peterbarrett1967 | 0:5ad808014a49 | 16 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| peterbarrett1967 | 0:5ad808014a49 | 17 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| peterbarrett1967 | 0:5ad808014a49 | 18 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| peterbarrett1967 | 0:5ad808014a49 | 19 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| peterbarrett1967 | 0:5ad808014a49 | 20 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| peterbarrett1967 | 0:5ad808014a49 | 21 | THE SOFTWARE. |
| peterbarrett1967 | 0:5ad808014a49 | 22 | */ |
| peterbarrett1967 | 0:5ad808014a49 | 23 | |
| peterbarrett1967 | 0:5ad808014a49 | 24 | #include "mbed.h" |
| peterbarrett1967 | 0:5ad808014a49 | 25 | #include "USBHost.h" |
| peterbarrett1967 | 0:5ad808014a49 | 26 | #include "Utils.h" |
| peterbarrett1967 | 0:5ad808014a49 | 27 | |
| peterbarrett1967 | 0:5ad808014a49 | 28 | #define AUTOEVT(_class,_subclass,_protocol) (((_class) << 16) | ((_subclass) << 8) | _protocol) |
| peterbarrett1967 | 0:5ad808014a49 | 29 | #define AUTO_KEYBOARD AUTOEVT(CLASS_HID,1,1) |
| peterbarrett1967 | 0:5ad808014a49 | 30 | #define AUTO_MOUSE AUTOEVT(CLASS_HID,1,2) |
| peterbarrett1967 | 0:5ad808014a49 | 31 | |
| peterbarrett1967 | 0:5ad808014a49 | 32 | u8 auto_mouse[4]; // buttons,dx,dy,scroll |
| peterbarrett1967 | 0:5ad808014a49 | 33 | u8 auto_keyboard[8]; // modifiers,reserved,keycode1..keycode6 |
| peterbarrett1967 | 0:5ad808014a49 | 34 | u8 auto_joystick[4]; // x,y,buttons,throttle |
| peterbarrett1967 | 0:5ad808014a49 | 35 | |
| peterbarrett1967 | 0:5ad808014a49 | 36 | void AutoEventCallback(int device, int endpoint, int status, u8* data, int len, void* userData) |
| peterbarrett1967 | 0:5ad808014a49 | 37 | { |
| peterbarrett1967 | 0:5ad808014a49 | 38 | int evt = (int)userData; |
| peterbarrett1967 | 0:5ad808014a49 | 39 | switch (evt) |
| peterbarrett1967 | 0:5ad808014a49 | 40 | { |
| peterbarrett1967 | 0:5ad808014a49 | 41 | case AUTO_KEYBOARD: |
| peterbarrett1967 | 0:5ad808014a49 | 42 | printf("AUTO_KEYBOARD "); |
| peterbarrett1967 | 0:5ad808014a49 | 43 | break; |
| peterbarrett1967 | 0:5ad808014a49 | 44 | case AUTO_MOUSE: |
| peterbarrett1967 | 0:5ad808014a49 | 45 | printf("AUTO_MOUSE "); |
| peterbarrett1967 | 0:5ad808014a49 | 46 | break; |
| peterbarrett1967 | 0:5ad808014a49 | 47 | default: |
| peterbarrett1967 | 0:5ad808014a49 | 48 | printf("HUH "); |
| peterbarrett1967 | 0:5ad808014a49 | 49 | } |
| peterbarrett1967 | 0:5ad808014a49 | 50 | printfBytes("data",data,len); |
| peterbarrett1967 | 0:5ad808014a49 | 51 | USBInterruptTransfer(device,endpoint,data,len,AutoEventCallback,userData); |
| peterbarrett1967 | 0:5ad808014a49 | 52 | } |
| peterbarrett1967 | 0:5ad808014a49 | 53 | |
| peterbarrett1967 | 0:5ad808014a49 | 54 | // Establish transfers for interrupt events |
| peterbarrett1967 | 0:5ad808014a49 | 55 | void AddAutoEvent(int device, InterfaceDescriptor* id, EndpointDescriptor* ed) |
| peterbarrett1967 | 0:5ad808014a49 | 56 | { |
| peterbarrett1967 | 0:5ad808014a49 | 57 | if ((ed->bmAttributes & 3) != ENDPOINT_INTERRUPT || !(ed->bEndpointAddress & 0x80)) |
| peterbarrett1967 | 0:5ad808014a49 | 58 | return; |
| peterbarrett1967 | 0:5ad808014a49 | 59 | |
| peterbarrett1967 | 0:5ad808014a49 | 60 | // Make automatic interrupt enpoints for known devices |
| peterbarrett1967 | 0:5ad808014a49 | 61 | u32 evt = AUTOEVT(id->bInterfaceClass,id->bInterfaceSubClass,id->bInterfaceProtocol); |
| peterbarrett1967 | 0:5ad808014a49 | 62 | u8* dst = 0; |
| peterbarrett1967 | 0:5ad808014a49 | 63 | int len; |
| peterbarrett1967 | 0:5ad808014a49 | 64 | switch (evt) |
| peterbarrett1967 | 0:5ad808014a49 | 65 | { |
| peterbarrett1967 | 0:5ad808014a49 | 66 | case AUTO_MOUSE: |
| peterbarrett1967 | 0:5ad808014a49 | 67 | dst = auto_mouse; |
| peterbarrett1967 | 0:5ad808014a49 | 68 | len = sizeof(auto_mouse); |
| peterbarrett1967 | 0:5ad808014a49 | 69 | break; |
| peterbarrett1967 | 0:5ad808014a49 | 70 | case AUTO_KEYBOARD: |
| peterbarrett1967 | 0:5ad808014a49 | 71 | dst = auto_keyboard; |
| peterbarrett1967 | 0:5ad808014a49 | 72 | len = sizeof(auto_keyboard); |
| peterbarrett1967 | 0:5ad808014a49 | 73 | break; |
| peterbarrett1967 | 0:5ad808014a49 | 74 | default: |
| peterbarrett1967 | 0:5ad808014a49 | 75 | printf("Interrupt endpoint %02X %08X\n",ed->bEndpointAddress,evt); |
| peterbarrett1967 | 0:5ad808014a49 | 76 | break; |
| peterbarrett1967 | 0:5ad808014a49 | 77 | } |
| peterbarrett1967 | 0:5ad808014a49 | 78 | if (dst) |
| peterbarrett1967 | 0:5ad808014a49 | 79 | { |
| peterbarrett1967 | 0:5ad808014a49 | 80 | printf("Auto Event for %02X %08X\n",ed->bEndpointAddress,evt); |
| peterbarrett1967 | 0:5ad808014a49 | 81 | USBInterruptTransfer(device,ed->bEndpointAddress,dst,len,AutoEventCallback,(void*)evt); |
| peterbarrett1967 | 0:5ad808014a49 | 82 | } |
| peterbarrett1967 | 0:5ad808014a49 | 83 | } |
| peterbarrett1967 | 0:5ad808014a49 | 84 | |
| peterbarrett1967 | 0:5ad808014a49 | 85 | void PrintString(int device, int i) |
| peterbarrett1967 | 0:5ad808014a49 | 86 | { |
| peterbarrett1967 | 0:5ad808014a49 | 87 | u8 buffer[256]; |
| peterbarrett1967 | 0:5ad808014a49 | 88 | int le = GetDescriptor(device,DESCRIPTOR_TYPE_STRING,i,buffer,255); |
| peterbarrett1967 | 0:5ad808014a49 | 89 | if (le < 0) |
| peterbarrett1967 | 0:5ad808014a49 | 90 | return; |
| peterbarrett1967 | 0:5ad808014a49 | 91 | char* dst = (char*)buffer; |
| peterbarrett1967 | 0:5ad808014a49 | 92 | for (int j = 2; j < le; j += 2) |
| peterbarrett1967 | 0:5ad808014a49 | 93 | *dst++ = buffer[j]; |
| peterbarrett1967 | 0:5ad808014a49 | 94 | *dst = 0; |
| peterbarrett1967 | 0:5ad808014a49 | 95 | printf("%d:%s\n",i,(const char*)buffer); |
| peterbarrett1967 | 0:5ad808014a49 | 96 | } |
| peterbarrett1967 | 0:5ad808014a49 | 97 | |
| peterbarrett1967 | 0:5ad808014a49 | 98 | // Walk descriptors and create endpoints for a given device |
| peterbarrett1967 | 0:5ad808014a49 | 99 | int StartAutoEvent(int device, int configuration, int interfaceNumber) |
| peterbarrett1967 | 0:5ad808014a49 | 100 | { |
| peterbarrett1967 | 0:5ad808014a49 | 101 | u8 buffer[255]; |
| peterbarrett1967 | 0:5ad808014a49 | 102 | int err = GetDescriptor(device,DESCRIPTOR_TYPE_CONFIGURATION,0,buffer,255); |
| peterbarrett1967 | 0:5ad808014a49 | 103 | if (err < 0) |
| peterbarrett1967 | 0:5ad808014a49 | 104 | return err; |
| peterbarrett1967 | 0:5ad808014a49 | 105 | |
| peterbarrett1967 | 0:5ad808014a49 | 106 | int len = buffer[2] | (buffer[3] << 8); |
| peterbarrett1967 | 0:5ad808014a49 | 107 | u8* d = buffer; |
| peterbarrett1967 | 0:5ad808014a49 | 108 | u8* end = d + len; |
| peterbarrett1967 | 0:5ad808014a49 | 109 | while (d < end) |
| peterbarrett1967 | 0:5ad808014a49 | 110 | { |
| peterbarrett1967 | 0:5ad808014a49 | 111 | if (d[1] == DESCRIPTOR_TYPE_INTERFACE) |
| peterbarrett1967 | 0:5ad808014a49 | 112 | { |
| peterbarrett1967 | 0:5ad808014a49 | 113 | InterfaceDescriptor* id = (InterfaceDescriptor*)d; |
| peterbarrett1967 | 0:5ad808014a49 | 114 | if (id->bInterfaceNumber == interfaceNumber) |
| peterbarrett1967 | 0:5ad808014a49 | 115 | { |
| peterbarrett1967 | 0:5ad808014a49 | 116 | d += d[0]; |
| peterbarrett1967 | 0:5ad808014a49 | 117 | while (d < end && d[1] != DESCRIPTOR_TYPE_INTERFACE) |
| peterbarrett1967 | 0:5ad808014a49 | 118 | { |
| peterbarrett1967 | 0:5ad808014a49 | 119 | if (d[1] == DESCRIPTOR_TYPE_ENDPOINT) |
| peterbarrett1967 | 0:5ad808014a49 | 120 | AddAutoEvent(device,id,(EndpointDescriptor*)d); |
| peterbarrett1967 | 0:5ad808014a49 | 121 | d += d[0]; |
| peterbarrett1967 | 0:5ad808014a49 | 122 | } |
| peterbarrett1967 | 0:5ad808014a49 | 123 | } |
| peterbarrett1967 | 0:5ad808014a49 | 124 | } |
| peterbarrett1967 | 0:5ad808014a49 | 125 | d += d[0]; |
| peterbarrett1967 | 0:5ad808014a49 | 126 | } |
| peterbarrett1967 | 0:5ad808014a49 | 127 | return 0; |
| peterbarrett1967 | 0:5ad808014a49 | 128 | } |
| peterbarrett1967 | 0:5ad808014a49 | 129 | |
| peterbarrett1967 | 0:5ad808014a49 | 130 | // Implemented in main.cpp |
| peterbarrett1967 | 0:5ad808014a49 | 131 | int OnDiskInsert(int device); |
| peterbarrett1967 | 0:5ad808014a49 | 132 | |
| peterbarrett1967 | 0:5ad808014a49 | 133 | void OnLoadDevice(int device, DeviceDescriptor* deviceDesc, InterfaceDescriptor* interfaceDesc) |
| peterbarrett1967 | 0:5ad808014a49 | 134 | { |
| peterbarrett1967 | 0:5ad808014a49 | 135 | printf("LoadDevice %d %02X:%02X:%02X\n",device,interfaceDesc->bInterfaceClass,interfaceDesc->bInterfaceSubClass,interfaceDesc->bInterfaceProtocol); |
| peterbarrett1967 | 0:5ad808014a49 | 136 | char s[128]; |
| peterbarrett1967 | 0:5ad808014a49 | 137 | for (int i = 1; i < 3; i++) |
| peterbarrett1967 | 0:5ad808014a49 | 138 | { |
| peterbarrett1967 | 0:5ad808014a49 | 139 | if (GetString(device,i,s,sizeof(s)) < 0) |
| peterbarrett1967 | 0:5ad808014a49 | 140 | break; |
| peterbarrett1967 | 0:5ad808014a49 | 141 | printf("%d: %s\n",i,s); |
| peterbarrett1967 | 0:5ad808014a49 | 142 | } |
| peterbarrett1967 | 0:5ad808014a49 | 143 | |
| peterbarrett1967 | 0:5ad808014a49 | 144 | switch (interfaceDesc->bInterfaceClass) |
| peterbarrett1967 | 0:5ad808014a49 | 145 | { |
| peterbarrett1967 | 0:5ad808014a49 | 146 | case CLASS_MASS_STORAGE: |
| peterbarrett1967 | 0:5ad808014a49 | 147 | if (interfaceDesc->bInterfaceSubClass == 0x06 && interfaceDesc->bInterfaceProtocol == 0x50) |
| peterbarrett1967 | 0:5ad808014a49 | 148 | OnDiskInsert(device); // it's SCSI! |
| peterbarrett1967 | 0:5ad808014a49 | 149 | break; |
| peterbarrett1967 | 0:5ad808014a49 | 150 | default: |
| peterbarrett1967 | 0:5ad808014a49 | 151 | StartAutoEvent(device,1,0); |
| peterbarrett1967 | 0:5ad808014a49 | 152 | break; |
| peterbarrett1967 | 0:5ad808014a49 | 153 | } |
| peterbarrett1967 | 0:5ad808014a49 | 154 | } |