1 /* Copyright (C) 2011 Circuits At Home, LTD. All rights reserved.
3 This software may be distributed and modified under the terms of the GNU
4 General Public License version 2 (GPL2) as published by the Free Software
5 Foundation and appearing in the file GPL2.TXT included in the packaging of
6 this file. Please note that GPL2 Section 2[b] requires that all works based
7 on this software must also be made publicly available under the terms of
14 Web : http://www.circuitsathome.com
15 e-mail : support@circuitsathome.com
18 /* Google ADK interface support header */
25 #define ADK_VID 0x18D1
26 #define ADK_PID 0x2D00
27 #define ADB_PID 0x2D01
29 #define XOOM //enables repeating getProto() and getConf() attempts
30 //necessary for slow devices such as Motorola XOOM
31 //defined by default, can be commented out to save memory
35 #define ADK_GETPROTO 51 //check USB accessory protocol version
36 #define ADK_SENDSTR 52 //send identifying string
37 #define ADK_ACCSTART 53 //start device in accessory mode
39 #define bmREQ_ADK_GET USB_SETUP_DEVICE_TO_HOST|USB_SETUP_TYPE_VENDOR|USB_SETUP_RECIPIENT_DEVICE
40 #define bmREQ_ADK_SEND USB_SETUP_HOST_TO_DEVICE|USB_SETUP_TYPE_VENDOR|USB_SETUP_RECIPIENT_DEVICE
42 #define ACCESSORY_STRING_MANUFACTURER 0
43 #define ACCESSORY_STRING_MODEL 1
44 #define ACCESSORY_STRING_DESCRIPTION 2
45 #define ACCESSORY_STRING_VERSION 3
46 #define ACCESSORY_STRING_URI 4
47 #define ACCESSORY_STRING_SERIAL 5
49 #define ADK_MAX_ENDPOINTS 3 //endpoint 0, bulk_IN, bulk_OUT
53 class ADK : public USBDeviceConfig, public UsbConfigXtracter {
56 const char* manufacturer;
58 const char* description;
63 /* ADK proprietary requests */
64 uint8_t getProto(uint8_t* adkproto);
65 uint8_t sendStr(uint8_t index, const char* str);
66 uint8_t switchAcc(void);
69 static const uint8_t epDataInIndex; // DataIn endpoint index
70 static const uint8_t epDataOutIndex; // DataOUT endpoint index
72 /* mandatory members */
75 uint8_t bConfNum; // configuration number
77 uint8_t bNumEP; // total number of EP in the configuration
80 /* Endpoint data structure */
81 EpInfo epInfo[ADK_MAX_ENDPOINTS];
83 void PrintEndpointDescriptor(const USB_ENDPOINT_DESCRIPTOR* ep_ptr);
86 ADK(USB *pUsb, const char* manufacturer,
88 const char* description,
93 // Methods for receiving and sending data
94 uint8_t RcvData(uint16_t *nbytesptr, uint8_t *dataptr);
95 uint8_t SndData(uint16_t nbytes, uint8_t *dataptr);
98 // USBDeviceConfig implementation
99 uint8_t ConfigureDevice(uint8_t parent, uint8_t port, bool lowspeed);
100 uint8_t Init(uint8_t parent, uint8_t port, bool lowspeed);
103 virtual uint8_t Poll() {
107 virtual uint8_t GetAddress() {
111 virtual bool isReady() {
115 virtual bool VIDPIDOK(uint16_t vid, uint16_t pid) {
116 return (vid == ADK_VID && (pid == ADK_PID || pid == ADB_PID));
119 //UsbConfigXtracter implementation
120 void EndpointXtract(uint8_t conf, uint8_t iface, uint8_t alt, uint8_t proto, const USB_ENDPOINT_DESCRIPTOR *ep);
121 }; //class ADK : public USBDeviceConfig ...
123 /* get ADK protocol version */
125 /* returns 2 bytes in *adkproto */
126 inline uint8_t ADK::getProto(uint8_t* adkproto) {
127 return ( pUsb->ctrlReq(bAddress, 0, bmREQ_ADK_GET, ADK_GETPROTO, 0, 0, 0, 2, 2, adkproto, NULL));
130 /* send ADK string */
131 inline uint8_t ADK::sendStr(uint8_t index, const char* str) {
132 return ( pUsb->ctrlReq(bAddress, 0, bmREQ_ADK_SEND, ADK_SENDSTR, 0, 0, index, strlen(str) + 1, strlen(str) + 1, (uint8_t*)str, NULL));
135 /* switch to accessory mode */
136 inline uint8_t ADK::switchAcc(void) {
137 return ( pUsb->ctrlReq(bAddress, 0, bmREQ_ADK_SEND, ADK_ACCSTART, 0, 0, 0, 0, 0, NULL, NULL));