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Arduino/hardware/arduino/sam/libraries/USBHost/Usb.h
Cristian Maglie b67a88a931 USBHost is now a library
2012-06-28 00:28:52 +02:00

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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
*/
/* USB functions */
#ifndef USB_H_INCLUDED
#define USB_H_INCLUDED
//#define TRACE_USBHOST(x) x
#define TRACE_USBHOST(x)
#include <stdint.h>
#include "usb_ch9.h"
#include "address.h"
/* Common setup data constant combinations */
#define bmREQ_GET_DESCR USB_SETUP_DEVICE_TO_HOST|USB_SETUP_TYPE_STANDARD|USB_SETUP_RECIPIENT_DEVICE // Get descriptor request type
#define bmREQ_SET USB_SETUP_HOST_TO_DEVICE|USB_SETUP_TYPE_STANDARD|USB_SETUP_RECIPIENT_DEVICE // Set request type for all but 'set feature' and 'set interface'
#define bmREQ_CL_GET_INTF USB_SETUP_DEVICE_TO_HOST|USB_SETUP_TYPE_CLASS|USB_SETUP_RECIPIENT_INTERFACE // Get interface request type
// USB Device Classes
#define USB_CLASS_USE_CLASS_INFO 0x00 // Use Class Info in the Interface Descriptors
#define USB_CLASS_AUDIO 0x01 // Audio
#define USB_CLASS_COM_AND_CDC_CTRL 0x02 // Communications and CDC Control
#define USB_CLASS_HID 0x03 // HID
#define USB_CLASS_PHYSICAL 0x05 // Physical
#define USB_CLASS_IMAGE 0x06 // Image
#define USB_CLASS_PRINTER 0x07 // Printer
#define USB_CLASS_MASS_STORAGE 0x08 // Mass Storage
#define USB_CLASS_HUB 0x09 // Hub
#define USB_CLASS_CDC_DATA 0x0a // CDC-Data
#define USB_CLASS_SMART_CARD 0x0b // Smart-Card
#define USB_CLASS_CONTENT_SECURITY 0x0d // Content Security
#define USB_CLASS_VIDEO 0x0e // Video
#define USB_CLASS_PERSONAL_HEALTH 0x0f // Personal Healthcare
#define USB_CLASS_DIAGNOSTIC_DEVICE 0xdc // Diagnostic Device
#define USB_CLASS_WIRELESS_CTRL 0xe0 // Wireless Controller
#define USB_CLASS_MISC 0xef // Miscellaneous
#define USB_CLASS_APP_SPECIFIC 0xfe // Application Specific
#define USB_CLASS_VENDOR_SPECIFIC 0xff // Vendor Specific
// Additional Error Codes
#define USB_DEV_CONFIG_ERROR_DEVICE_NOT_SUPPORTED 0xD1
#define USB_DEV_CONFIG_ERROR_DEVICE_INIT_INCOMPLETE 0xD2
#define USB_ERROR_UNABLE_TO_REGISTER_DEVICE_CLASS 0xD3
#define USB_ERROR_OUT_OF_ADDRESS_SPACE_IN_POOL 0xD4
#define USB_ERROR_HUB_ADDRESS_OVERFLOW 0xD5
#define USB_ERROR_ADDRESS_NOT_FOUND_IN_POOL 0xD6
#define USB_ERROR_EPINFO_IS_NULL 0xD7
#define USB_ERROR_INVALID_ARGUMENT 0xD8
#define USB_ERROR_CLASS_INSTANCE_ALREADY_IN_USE 0xD9
#define USB_ERROR_INVALID_MAX_PKT_SIZE 0xDA
#define USB_ERROR_EP_NOT_FOUND_IN_TBL 0xDB
#define USB_ERROR_TRANSFER_TIMEOUT 0xFF
#define USB_XFER_TIMEOUT 5000 //USB transfer timeout in milliseconds, per section 9.2.6.1 of USB 2.0 spec
//#define USB_NAK_LIMIT 32000 //NAK limit for a transfer. 0 means NAKs are not counted
#define USB_RETRY_LIMIT 3 //retry limit for a transfer
#define USB_SETTLE_DELAY 200 //settle delay in milliseconds
#define USB_NUMDEVICES 16 //number of USB devices
//#define HUB_MAX_HUBS 7 // maximum number of hubs that can be attached to the host controller
#define HUB_PORT_RESET_DELAY 20 // hub port reset delay 10 ms recomended, can be up to 20 ms
/* USB state machine states */
#define USB_STATE_MASK 0xf0
#define USB_STATE_DETACHED 0x10
#define USB_DETACHED_SUBSTATE_INITIALIZE 0x11
#define USB_DETACHED_SUBSTATE_WAIT_FOR_DEVICE 0x12
#define USB_DETACHED_SUBSTATE_ILLEGAL 0x13
#define USB_ATTACHED_SUBSTATE_SETTLE 0x20
#define USB_ATTACHED_SUBSTATE_RESET_DEVICE 0x30
#define USB_ATTACHED_SUBSTATE_WAIT_RESET_COMPLETE 0x40
#define USB_ATTACHED_SUBSTATE_WAIT_SOF 0x50
#define USB_ATTACHED_SUBSTATE_GET_DEVICE_DESCRIPTOR_SIZE 0x60
#define USB_STATE_ADDRESSING 0x70
#define USB_STATE_CONFIGURING 0x80
#define USB_STATE_RUNNING 0x90
#define USB_STATE_ERROR 0xa0
#define USB_STATE_MASK 0xf0
// USB Setup Packet Structure
typedef struct
{
union
{ // offset description
uint8_t bmRequestType; // 0 Bit-map of request type
struct
{
uint8_t recipient: 5; // Recipient of the request
uint8_t type: 2; // Type of request
uint8_t direction: 1; // Direction of data X-fer
};
} ReqType_u;
uint8_t bRequest; // 1 Request
union
{
uint16_t wValue; // 2 Depends on bRequest
struct
{
uint8_t wValueLo;
uint8_t wValueHi;
};
} wVal_u;
uint16_t wIndex; // 4 Depends on bRequest
uint16_t wLength; // 6 Depends on bRequest
} SETUP_PKT, *PSETUP_PKT;
/**
* \class USBReadParser
*
* \brief Base class used for USB descriptor parsing.
*/
class USBReadParser
{
public:
virtual void Parse(const uint32_t len, const uint8_t *pbuf, const uint32_t &offset) = 0;
};
/**
* \class USBDeviceConfig
*
* \brief Device configuration class used for managing device life cycle.
*/
class USBDeviceConfig
{
public:
//! @brief Perform final enumeration stage.
virtual uint32_t Init(uint32_t parent, uint32_t port, uint32_t lowspeed) = 0;
//! @brief Free USB allocated resources (pipes and address).
virtual uint32_t Release() = 0;
//! @brief Poll USB device. Call is made for each connected USB device on USBHost.task() call.
virtual uint32_t Poll() = 0;
//! @brief Retrieve USB device address.
virtual uint32_t GetAddress() = 0;
};
/**
* \class USBHost
*
* \brief Main USB host class.
*/
class USBHost
{
AddressPoolImpl<USB_NUMDEVICES> addrPool;
USBDeviceConfig* devConfig[USB_NUMDEVICES];
uint32_t devConfigIndex;
uint32_t bmHubPre;
public:
USBHost(void);
//void SetHubPreMask() { bmHubPre |= bmHUBPRE; };
//void ResetHubPreMask() { bmHubPre &= (~bmHUBPRE); };
AddressPool& GetAddressPool()
{
return (AddressPool&)addrPool;
};
uint32_t RegisterDeviceClass(USBDeviceConfig *pdev)
{
for (uint32_t i = 0; i < USB_NUMDEVICES; ++i)
{
if (!devConfig[i])
{
devConfig[i] = pdev;
return 0;
}
}
return USB_ERROR_UNABLE_TO_REGISTER_DEVICE_CLASS;
};
void ForEachUsbDevice(UsbDeviceHandleFunc pfunc)
{
addrPool.ForEachUsbDevice(pfunc);
};
uint32_t getUsbTaskState(void);
void setUsbTaskState(uint32_t state);
EpInfo* getEpInfoEntry(uint32_t addr, uint32_t ep);
uint32_t setEpInfoEntry(uint32_t addr, uint32_t epcount, EpInfo* eprecord_ptr);
/* Control requests */
uint32_t getDevDescr(uint32_t addr, uint32_t ep, uint32_t nbytes, uint8_t* dataptr);
uint32_t getConfDescr(uint32_t addr, uint32_t ep, uint32_t nbytes, uint32_t conf, uint8_t* dataptr);
uint32_t getConfDescr(uint32_t addr, uint32_t ep, uint32_t conf, USBReadParser *p);
uint32_t getStrDescr(uint32_t addr, uint32_t ep, uint32_t nbytes, uint8_t index, uint16_t langid, uint8_t* dataptr);
uint32_t setAddr(uint32_t oldaddr, uint32_t ep, uint32_t newaddr);
uint32_t setConf(uint32_t addr, uint32_t ep, uint32_t conf_value);
uint32_t ctrlReq(uint32_t addr, uint32_t ep, uint8_t bmReqType, uint8_t bRequest, uint8_t wValLo, uint8_t wValHi,
uint16_t wInd, uint16_t total, uint32_t nbytes, uint8_t* dataptr, USBReadParser *p);
/* Transfer requests */
uint32_t inTransfer(uint32_t addr, uint32_t ep, uint32_t *nbytesptr, uint8_t* data);
uint32_t outTransfer(uint32_t addr, uint32_t ep, uint32_t nbytes, uint8_t* data);
uint32_t dispatchPkt(uint32_t token, uint32_t ep, uint32_t nak_limit);
void Task(void);
uint32_t DefaultAddressing(uint32_t parent, uint32_t port, uint32_t lowspeed);
uint32_t Configuring(uint32_t parent, uint32_t port, uint32_t lowspeed);
uint32_t ReleaseDevice(uint32_t addr);
private:
void init();
uint32_t setPipeAddress(uint32_t addr, uint32_t ep, EpInfo **ppep, uint32_t &nak_limit);
uint32_t OutTransfer(EpInfo *pep, uint32_t nak_limit, uint32_t nbytes, uint8_t *data);
uint32_t InTransfer(EpInfo *pep, uint32_t nak_limit, uint32_t *nbytesptr, uint8_t* data);
};
#endif /* USB_H_INCLUDED */
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