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204 lines
11 KiB
C++
204 lines
11 KiB
C++
/* Copyright 2009-2011 Oleg Mazurov, Circuits At Home, http://www.circuitsathome.com */
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/* USB functions */
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#ifndef USB_H_INCLUDED
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#define USB_H_INCLUDED
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#include <stdint.h>
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#include "ch9.h"
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/* Common setup data constant combinations */
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#define bmREQ_GET_DESCR USB_SETUP_DEVICE_TO_HOST|USB_SETUP_TYPE_STANDARD|USB_SETUP_RECIPIENT_DEVICE // Get descriptor request type
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#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'
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#define bmREQ_CL_GET_INTF USB_SETUP_DEVICE_TO_HOST|USB_SETUP_TYPE_CLASS|USB_SETUP_RECIPIENT_INTERFACE // Get interface request type
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/* HID requests */
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#define bmREQ_HIDOUT USB_SETUP_HOST_TO_DEVICE|USB_SETUP_TYPE_CLASS|USB_SETUP_RECIPIENT_INTERFACE
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#define bmREQ_HIDIN USB_SETUP_DEVICE_TO_HOST|USB_SETUP_TYPE_CLASS|USB_SETUP_RECIPIENT_INTERFACE
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#define bmREQ_HIDREPORT USB_SETUP_DEVICE_TO_HOST|USB_SETUP_TYPE_STANDARD|USB_SETUP_RECIPIENT_INTERFACE
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#define USB_XFER_TIMEOUT 5000 // USB transfer timeout in milliseconds, per section 9.2.6.1 of USB 2.0 spec
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#define USB_NAK_LIMIT 32000 // NAK limit for a transfer. o means NAKs are not counted
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#define USB_RETRY_LIMIT 3 // Retry limit for a transfer
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#define USB_SETTLE_DELAY 200 // Settle delay in milliseconds
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#define USB_NAK_NOWAIT 1 // Used in Richard's PS2/Wiimote code
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#define USB_NUMDEVICES 2 // Number of USB devices
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/* USB state machine states */
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#define USB_STATE_DETACHED 0x10
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#define USB_DETACHED_SUBSTATE_INITIALIZE 0x11
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#define USB_DETACHED_SUBSTATE_WAIT_FOR_DEVICE 0x12
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#define USB_DETACHED_SUBSTATE_ILLEGAL 0x13
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#define USB_ATTACHED_SUBSTATE_SETTLE 0x20
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#define USB_ATTACHED_SUBSTATE_RESET_DEVICE 0x30
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#define USB_ATTACHED_SUBSTATE_WAIT_RESET_COMPLETE 0x40
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#define USB_ATTACHED_SUBSTATE_WAIT_SOF 0x50
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#define USB_ATTACHED_SUBSTATE_GET_DEVICE_DESCRIPTOR_SIZE 0x60
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#define USB_STATE_ADDRESSING 0x70
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#define USB_STATE_CONFIGURING 0x80
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#define USB_STATE_RUNNING 0x90
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#define USB_STATE_ERROR 0xa0
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#define USB_STATE_MASK 0xf0
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/* USB Setup Packet Structure */
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typedef struct
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{
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union
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{ // offset description
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uint8_t bmRequestType; // 0 Bit-map of request type
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struct
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{
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uint8_t recipient: 5; // Recipient of the request
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uint8_t type: 2; // Type of request
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uint8_t direction: 1; // Direction of data X-fer
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};
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} ReqType_u;
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uint8_t bRequest; // 1 Request
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union
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{
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uint16_t wValue; // 2 Depends on bRequest
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struct
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{
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uint8_t wValueLo;
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uint8_t wValueHi;
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};
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} wVal_u;
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uint16_t wIndex; // 4 Depends on bRequest
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uint16_t wLength; // 6 Depends on bRequest
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} SETUP_PKT, *PSETUP_PKT;
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/* Endpoint information structure */
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/* bToggle of endpoint 0 initialized to 0xff */
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/* during enumeration bToggle is set to 00 */
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typedef struct
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{
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uint32_t epAddr; // Copy from endpoint descriptor. Bit 7 indicates direction (ignored for control endpoints)
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uint8_t Attr; // Endpoint transfer type.
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uint16_t MaxPktSize; // Maximum packet size.
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uint8_t Interval; // Polling interval in frames.
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uint8_t sndToggle; // Last toggle value, bitmask for HCTL toggle bits
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uint8_t rcvToggle; // Last toggle value, bitmask for HCTL toggle bits
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/* not sure if both are necessary */
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} EP_RECORD;
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/* Device record structure */
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typedef struct
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{
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EP_RECORD* epinfo; // Device endpoint information
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uint8_t devclass; // Device class
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} DEV_RECORD;
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/**
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* USBHost Class
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* The device table is filled during enumeration.
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* Index corresponds to device address and each entry contains pointer to endpoint structure and device class to use.
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*/
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class USBHost
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{
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public:
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USBHost(void);
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uint32_t getUsbTaskState(void);
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void setUsbTaskState(uint32_t state);
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EP_RECORD* getDevTableEntry(uint32_t addr, uint32_t ep);
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void setDevTableEntry(uint32_t addr, EP_RECORD* eprecord_ptr);
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uint32_t ctrlReq(uint32_t addr, uint32_t ep, uint8_t bmReqType, uint8_t bRequest, uint8_t wValLo, uint8_t wValHi, uint16_t wInd, uint32_t nbytes, uint8_t* dataptr, uint32_t nak_limit = USB_NAK_LIMIT);
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/* Control requests */
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uint32_t getDevDescr(uint32_t addr, uint32_t ep, uint32_t nbytes, uint8_t* dataptr, uint32_t nak_limit = USB_NAK_LIMIT);
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uint32_t getConfDescr(uint32_t addr, uint32_t ep, uint32_t nbytes, uint8_t conf, uint8_t* dataptr, uint32_t nak_limit = USB_NAK_LIMIT);
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uint32_t getStrDescr(uint32_t addr, uint32_t ep, uint32_t nbytes, uint8_t index, uint16_t langid, uint8_t* dataptr, uint32_t nak_limit = USB_NAK_LIMIT);
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uint32_t setAddr(uint32_t oldaddr, uint32_t ep, uint32_t newaddr, uint32_t nak_limit = USB_NAK_LIMIT);
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uint32_t setConf(uint32_t addr, uint32_t ep, uint8_t conf_value, uint32_t nak_limit = USB_NAK_LIMIT);
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/* Status requests */
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uint32_t setProto(uint32_t addr, uint32_t ep, uint8_t interface, uint8_t protocol, uint32_t nak_limit = USB_NAK_LIMIT);
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uint32_t getProto(uint32_t addr, uint32_t ep, uint8_t interface, uint8_t* dataptr, uint32_t nak_limit = USB_NAK_LIMIT);
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uint32_t getReportDescr(uint32_t addr, uint32_t ep, uint32_t nbytes, uint8_t* dataptr, uint32_t nak_limit = USB_NAK_LIMIT);
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uint32_t setReport(uint32_t addr, uint32_t ep, uint32_t nbytes, uint8_t interface, uint8_t report_type, uint8_t report_id, uint8_t* dataptr, uint32_t nak_limit = USB_NAK_LIMIT);
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uint32_t getReport(uint32_t addr, uint32_t ep, uint32_t nbytes, uint8_t interface, uint8_t report_type, uint8_t report_id, uint8_t* dataptr, uint32_t nak_limit = USB_NAK_LIMIT);
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uint32_t getIdle(uint32_t addr, uint32_t ep, uint8_t interface, uint8_t reportID, uint8_t* dataptr, uint32_t nak_limit = USB_NAK_LIMIT);
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uint32_t setIdle(uint32_t addr, uint32_t ep, uint8_t interface, uint8_t reportID, uint8_t duration, uint32_t nak_limit = USB_NAK_LIMIT);
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/* Transfer requests */
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uint32_t ctrlData(uint32_t addr, uint32_t ep, uint32_t nbytes, uint8_t* dataptr, uint32_t direction, uint32_t nak_limit = USB_NAK_LIMIT);
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uint32_t ctrlStatus(uint32_t ep, uint32_t direction, uint32_t nak_limit = USB_NAK_LIMIT);
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uint32_t inTransfer(uint32_t addr, uint32_t ep, uint32_t nbytes, uint8_t* data, uint32_t nak_limit = USB_NAK_LIMIT);
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int32_t newInTransfer(uint32_t addr, uint32_t ep, uint32_t nbytes, uint8_t* data, uint32_t nak_limit = USB_NAK_LIMIT);
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uint32_t outTransfer(uint32_t addr, uint32_t ep, uint32_t nbytes, uint8_t* data, uint32_t nak_limit = USB_NAK_LIMIT);
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uint32_t dispatchPkt(uint32_t token, uint32_t ep, uint32_t nak_limit = USB_NAK_LIMIT);
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void Task(void);
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private:
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void init();
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};
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// Get device descriptor
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inline uint32_t USBHost::getDevDescr(uint32_t addr, uint32_t ep, uint32_t nbytes, uint8_t* dataptr, uint32_t nak_limit)
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{
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return (ctrlReq(addr, ep, bmREQ_GET_DESCR, USB_REQUEST_GET_DESCRIPTOR, 0x00, USB_DESCRIPTOR_DEVICE, 0x0000, nbytes, dataptr, nak_limit));
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}
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// Get configuration descriptor
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inline uint32_t USBHost::getConfDescr(uint32_t addr, uint32_t ep, uint32_t nbytes, uint8_t conf, uint8_t* dataptr, uint32_t nak_limit)
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{
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return (ctrlReq(addr, ep, bmREQ_GET_DESCR, USB_REQUEST_GET_DESCRIPTOR, conf, USB_DESCRIPTOR_CONFIGURATION, 0x0000, nbytes, dataptr, nak_limit));
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}
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// Get string descriptor
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inline uint32_t USBHost::getStrDescr(uint32_t addr, uint32_t ep, uint32_t nbytes, uint8_t index, uint16_t langid, uint8_t* dataptr, uint32_t nak_limit)
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{
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return (ctrlReq(addr, ep, bmREQ_GET_DESCR, USB_REQUEST_GET_DESCRIPTOR, index, USB_DESCRIPTOR_STRING, langid, nbytes, dataptr, nak_limit));
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}
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// Set address
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inline uint32_t USBHost::setAddr(uint32_t oldaddr, uint32_t ep, uint32_t newaddr, uint32_t nak_limit)
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{
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return (ctrlReq(oldaddr, ep, bmREQ_SET, USB_REQUEST_SET_ADDRESS, newaddr, 0x00, 0x0000, 0x0000, 0, nak_limit));
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}
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// Set configuration
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inline uint32_t USBHost::setConf(uint32_t addr, uint32_t ep, uint8_t conf_value, uint32_t nak_limit)
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{
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return (ctrlReq(addr, ep, bmREQ_SET, USB_REQUEST_SET_CONFIGURATION, conf_value, 0x00, 0x0000, 0x0000, 0, nak_limit));
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}
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// Class requests
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inline uint32_t USBHost::setProto(uint32_t addr, uint32_t ep, uint8_t interface, uint8_t protocol, uint32_t nak_limit)
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{
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return (ctrlReq(addr, ep, bmREQ_HIDOUT, HID_REQUEST_SET_PROTOCOL, protocol, 0x00, interface, 0x0000, 0, nak_limit));
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}
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inline uint32_t USBHost::getProto(uint32_t addr, uint32_t ep, uint8_t interface, uint8_t* dataptr, uint32_t nak_limit)
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{
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return (ctrlReq(addr, ep, bmREQ_HIDIN, HID_REQUEST_GET_PROTOCOL, 0x00, 0x00, interface, 0x0001, dataptr, nak_limit));
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}
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// Get HID report descriptor
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inline uint32_t USBHost::getReportDescr(uint32_t addr, uint32_t ep, uint32_t nbytes, uint8_t* dataptr, uint32_t nak_limit)
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{
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return (ctrlReq(addr, ep, bmREQ_HIDREPORT, USB_REQUEST_GET_DESCRIPTOR, 0x00, HID_DESCRIPTOR_REPORT, 0x0000, nbytes, dataptr, nak_limit));
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}
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inline uint32_t USBHost::setReport(uint32_t addr, uint32_t ep, uint32_t nbytes, uint8_t interface, uint8_t report_type, uint8_t report_id, uint8_t* dataptr, uint32_t nak_limit)
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{
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return (ctrlReq(addr, ep, bmREQ_HIDOUT, HID_REQUEST_SET_REPORT, report_id, report_type, interface, nbytes, dataptr, nak_limit));
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}
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inline uint32_t USBHost::getReport(uint32_t addr, uint32_t ep, uint32_t nbytes, uint8_t interface, uint8_t report_type, uint8_t report_id, uint8_t* dataptr, uint32_t nak_limit)
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{
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return (ctrlReq(addr, ep, bmREQ_HIDIN, HID_REQUEST_GET_REPORT, report_id, report_type, interface, nbytes, dataptr, nak_limit));
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}
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/* returns one uint8_t of data in dataptr */
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inline uint32_t USBHost::getIdle(uint32_t addr, uint32_t ep, uint8_t interface, uint8_t reportID, uint8_t* dataptr, uint32_t nak_limit)
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{
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return (ctrlReq(addr, ep, bmREQ_HIDIN, HID_REQUEST_GET_IDLE, reportID, 0, interface, 0x0001, dataptr, nak_limit));
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}
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inline uint32_t USBHost::setIdle(uint32_t addr, uint32_t ep, uint8_t interface, uint8_t reportID, uint8_t duration, uint32_t nak_limit)
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{
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return (ctrlReq(addr, ep, bmREQ_HIDOUT, HID_REQUEST_SET_IDLE, reportID, duration, interface, 0x0000, 0, nak_limit));
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}
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#endif /* USB_H_INCLUDED */
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