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/* Copyright (C) 2011 Circuits At Home, LTD. All rights reserved.
This software may be distributed and modified under the terms of the GNU
General Public License version 2 (GPL2) as published by the Free Software
Foundation and appearing in the file GPL2.TXT included in the packaging of
this file. Please note that GPL2 Section 2[b] requires that all works based
on this software must also be made publicly available under the terms of
the GPL2 ("Copyleft").
Contact information
-------------------
Circuits At Home, LTD
Web : http://www.circuitsathome.com
e-mail : support@circuitsathome.com
*/
/* Google ADK interface support header */
#if !defined(_ADK_H_)
#define _ADK_H_
#include "Usb.h"
#define ADK_VID 0x18D1
#define ADK_PID 0x2D00
#define ADB_PID 0x2D01
#define XOOM //enables repeating getProto() and getConf() attempts
//necessary for slow devices such as Motorola XOOM
//defined by default, can be commented out to save memory
/* requests */
#define ADK_GETPROTO 51 //check USB accessory protocol version
#define ADK_SENDSTR 52 //send identifying string
#define ADK_ACCSTART 53 //start device in accessory mode
#define bmREQ_ADK_GET USB_SETUP_DEVICE_TO_HOST|USB_SETUP_TYPE_VENDOR|USB_SETUP_RECIPIENT_DEVICE
#define bmREQ_ADK_SEND USB_SETUP_HOST_TO_DEVICE|USB_SETUP_TYPE_VENDOR|USB_SETUP_RECIPIENT_DEVICE
#define ACCESSORY_STRING_MANUFACTURER 0
#define ACCESSORY_STRING_MODEL 1
#define ACCESSORY_STRING_DESCRIPTION 2
#define ACCESSORY_STRING_VERSION 3
#define ACCESSORY_STRING_URI 4
#define ACCESSORY_STRING_SERIAL 5
#define ADK_MAX_ENDPOINTS 3 //endpoint 0, bulk_IN, bulk_OUT
class ADK;
class ADK : public USBDeviceConfig, public UsbConfigXtracter {
private:
/* ID strings */
const char* manufacturer;
const char* model;
const char* description;
const char* version;
const char* uri;
const char* serial;
/* ADK proprietary requests */
uint8_t getProto(uint8_t* adkproto);
uint8_t sendStr(uint8_t index, const char* str);
uint8_t switchAcc(void);
protected:
static const uint8_t epDataInIndex; // DataIn endpoint index
static const uint8_t epDataOutIndex; // DataOUT endpoint index
/* mandatory members */
USB *pUsb;
uint8_t bAddress;
uint8_t bConfNum; // configuration number
uint8_t bNumEP; // total number of EP in the configuration
bool ready;
/* Endpoint data structure */
EpInfo epInfo[ADK_MAX_ENDPOINTS];
void PrintEndpointDescriptor(const USB_ENDPOINT_DESCRIPTOR* ep_ptr);
public:
ADK(USB *pUsb, const char* manufacturer,
const char* model,
const char* description,
const char* version,
const char* uri,
const char* serial);
// Methods for receiving and sending data
uint8_t RcvData(uint16_t *nbytesptr, uint8_t *dataptr);
uint8_t SndData(uint16_t nbytes, uint8_t *dataptr);
// USBDeviceConfig implementation
uint8_t ConfigureDevice(uint8_t parent, uint8_t port, bool lowspeed);
uint8_t Init(uint8_t parent, uint8_t port, bool lowspeed);
uint8_t Release();
virtual uint8_t Poll() {
return 0;
};
virtual uint8_t GetAddress() {
return bAddress;
};
virtual bool isReady() {
return ready;
};
virtual bool VIDPIDOK(uint16_t vid, uint16_t pid) {
return (vid == ADK_VID && (pid == ADK_PID || pid == ADB_PID));
};
//UsbConfigXtracter implementation
void EndpointXtract(uint8_t conf, uint8_t iface, uint8_t alt, uint8_t proto, const USB_ENDPOINT_DESCRIPTOR *ep);
}; //class ADK : public USBDeviceConfig ...
/* get ADK protocol version */
/* returns 2 bytes in *adkproto */
inline uint8_t ADK::getProto(uint8_t* adkproto) {
return ( pUsb->ctrlReq(bAddress, 0, bmREQ_ADK_GET, ADK_GETPROTO, 0, 0, 0, 2, 2, adkproto, NULL));
}
/* send ADK string */
inline uint8_t ADK::sendStr(uint8_t index, const char* str) {
return ( pUsb->ctrlReq(bAddress, 0, bmREQ_ADK_SEND, ADK_SENDSTR, 0, 0, index, strlen(str) + 1, strlen(str) + 1, (uint8_t*)str, NULL));
}
/* switch to accessory mode */
inline uint8_t ADK::switchAcc(void) {
return ( pUsb->ctrlReq(bAddress, 0, bmREQ_ADK_SEND, ADK_ACCSTART, 0, 0, 0, 0, 0, NULL, NULL));
}
#endif // _ADK_H_
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