mirror of
https://github.com/felis/USB_Host_Shield_2.0.git
synced 2024-03-22 11:31:26 +01:00
140 lines
4.4 KiB
C++
140 lines
4.4 KiB
C++
/* Copyright (C) 2011 Circuits At Home, LTD. All rights reserved.
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This software may be distributed and modified under the terms of the GNU
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General Public License version 2 (GPL2) as published by the Free Software
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Foundation and appearing in the file GPL2.TXT included in the packaging of
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this file. Please note that GPL2 Section 2[b] requires that all works based
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on this software must also be made publicly available under the terms of
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the GPL2 ("Copyleft").
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Contact information
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-------------------
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Circuits At Home, LTD
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Web : http://www.circuitsathome.com
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e-mail : support@circuitsathome.com
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*/
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/* Google ADK interface support header */
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#if !defined(_ADK_H_)
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#define _ADK_H_
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#include "Usb.h"
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#define ADK_VID 0x18D1
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#define ADK_PID 0x2D00
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#define ADB_PID 0x2D01
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#define XOOM //enables repeating getProto() and getConf() attempts
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//necessary for slow devices such as Motorola XOOM
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//defined by default, can be commented out to save memory
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/* requests */
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#define ADK_GETPROTO 51 //check USB accessory protocol version
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#define ADK_SENDSTR 52 //send identifying string
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#define ADK_ACCSTART 53 //start device in accessory mode
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#define bmREQ_ADK_GET USB_SETUP_DEVICE_TO_HOST|USB_SETUP_TYPE_VENDOR|USB_SETUP_RECIPIENT_DEVICE
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#define bmREQ_ADK_SEND USB_SETUP_HOST_TO_DEVICE|USB_SETUP_TYPE_VENDOR|USB_SETUP_RECIPIENT_DEVICE
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#define ACCESSORY_STRING_MANUFACTURER 0
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#define ACCESSORY_STRING_MODEL 1
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#define ACCESSORY_STRING_DESCRIPTION 2
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#define ACCESSORY_STRING_VERSION 3
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#define ACCESSORY_STRING_URI 4
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#define ACCESSORY_STRING_SERIAL 5
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#define ADK_MAX_ENDPOINTS 3 //endpoint 0, bulk_IN, bulk_OUT
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class ADK;
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class ADK : public USBDeviceConfig, public UsbConfigXtracter {
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private:
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/* ID strings */
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const char* manufacturer;
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const char* model;
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const char* description;
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const char* version;
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const char* uri;
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const char* serial;
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/* ADK proprietary requests */
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uint8_t getProto(uint8_t* adkproto);
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uint8_t sendStr(uint8_t index, const char* str);
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uint8_t switchAcc(void);
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protected:
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static const uint8_t epDataInIndex; // DataIn endpoint index
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static const uint8_t epDataOutIndex; // DataOUT endpoint index
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/* mandatory members */
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USBHost *pUsb;
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uint8_t bAddress;
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uint8_t bConfNum; // configuration number
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uint8_t bNumEP; // total number of EP in the configuration
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bool ready;
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/* Endpoint data structure */
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EpInfo epInfo[ADK_MAX_ENDPOINTS];
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void PrintEndpointDescriptor(const USB_ENDPOINT_DESCRIPTOR* ep_ptr);
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public:
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ADK(USBHost *pUsb, const char* manufacturer,
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const char* model,
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const char* description,
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const char* version,
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const char* uri,
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const char* serial);
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// Methods for receiving and sending data
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uint8_t RcvData(uint16_t *nbytesptr, uint8_t *dataptr);
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uint8_t SndData(uint16_t nbytes, uint8_t *dataptr);
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// USBDeviceConfig implementation
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uint8_t ConfigureDevice(uint8_t parent, uint8_t port, bool lowspeed);
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uint8_t Init(uint8_t parent, uint8_t port, bool lowspeed);
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uint8_t Release();
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virtual uint8_t Poll() {
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return 0;
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};
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virtual uint8_t GetAddress() {
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return bAddress;
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};
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virtual bool isReady() {
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return ready;
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};
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virtual bool VIDPIDOK(uint16_t vid, uint16_t pid) {
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return (vid == ADK_VID && (pid == ADK_PID || pid == ADB_PID));
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};
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//UsbConfigXtracter implementation
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void EndpointXtract(uint8_t conf, uint8_t iface, uint8_t alt, uint8_t proto, const USB_ENDPOINT_DESCRIPTOR *ep);
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}; //class ADK : public USBDeviceConfig ...
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/* get ADK protocol version */
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/* returns 2 bytes in *adkproto */
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inline uint8_t ADK::getProto(uint8_t* adkproto) {
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return ( pUsb->ctrlReq(bAddress, 0, bmREQ_ADK_GET, ADK_GETPROTO, 0, 0, 0, 2, 2, adkproto, NULL));
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}
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/* send ADK string */
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inline uint8_t ADK::sendStr(uint8_t index, const char* str) {
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return ( pUsb->ctrlReq(bAddress, 0, bmREQ_ADK_SEND, ADK_SENDSTR, 0, 0, index, strlen(str) + 1, strlen(str) + 1, (uint8_t*)str, NULL));
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}
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/* switch to accessory mode */
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inline uint8_t ADK::switchAcc(void) {
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return ( pUsb->ctrlReq(bAddress, 0, bmREQ_ADK_SEND, ADK_ACCSTART, 0, 0, 0, 0, 0, NULL, NULL));
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}
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#endif // _ADK_H_
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