usbdcdc.h

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//*****************************************************************************
//
// usbdcdc.h - USBLib support for generic CDC ACM (serial) device.
//
// Copyright (c) 2008-2017 Texas Instruments Incorporated.  All rights reserved.
// Software License Agreement
// 
// Texas Instruments (TI) is supplying this software for use solely and
// exclusively on TI's microcontroller products. The software is owned by
// TI and/or its suppliers, and is protected under applicable copyright
// laws. You may not combine this software with "viral" open-source
// software in order to form a larger program.
// 
// THIS SOFTWARE IS PROVIDED "AS IS" AND WITH ALL FAULTS.
// NO WARRANTIES, WHETHER EXPRESS, IMPLIED OR STATUTORY, INCLUDING, BUT
// NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE APPLY TO THIS SOFTWARE. TI SHALL NOT, UNDER ANY
// CIRCUMSTANCES, BE LIABLE FOR SPECIAL, INCIDENTAL, OR CONSEQUENTIAL
// DAMAGES, FOR ANY REASON WHATSOEVER.
// 
//
//*****************************************************************************

#ifndef __USBDCDC_H__
#define __USBDCDC_H__

//*****************************************************************************
//
// If building with a C++ compiler, make all of the definitions in this header
// have a C binding.
//
//*****************************************************************************
#ifdef __cplusplus
extern "C"
{
#endif

//*****************************************************************************
//
//
//*****************************************************************************

//*****************************************************************************
//
// PRIVATE
//
// The first few sections of this header are private defines that are used by
// the USB CDC Serial code and are here only to help with the application
// allocating the correct amount of memory for the CDC Serial device code.
//
//*****************************************************************************

//*****************************************************************************
//
// PRIVATE
//
// This enumeration holds the various states that the device can be in during
// normal operation.
//
//*****************************************************************************
typedef enum
{
    //
    // Unconfigured.
    //
    eCDCStateUnconfigured,

    //
    // No outstanding transaction remains to be completed.
    //
    eCDCStateIdle,

    //
    // Waiting on completion of a send or receive transaction.
    //
    eCDCStateWaitData,

    //
    // Waiting for client to process data.
    //
    eCDCStateWaitClient
}
tCDCState;

//*****************************************************************************
//
// PRIVATE
//
// This structure defines the private instance data and state variables for the
// CDC Serial device.  The memory for this structure is allocated in the
// tUSBDCDCDevice structure passed on USBDCDCInit().
//
//*****************************************************************************
typedef struct
{
    //
    // Base address for the USB controller.
    //
    uint32_t ui32USBBase;

    //
    // The device info to interact with the lower level DCD code.
    //
    tDeviceInfo sDevInfo;

    //
    // The state of the serial receive state.
    //
    volatile tCDCState iCDCRxState;

    //
    // The state of the serial transmit state.
    //
    volatile tCDCState iCDCTxState;

    //
    // The state of the serial request state.
    //
    volatile tCDCState iCDCRequestState;

    //
    // The state of the serial interrupt state.
    //
    volatile tCDCState iCDCInterruptState;

    //
    // The current pending request.
    //
    volatile uint8_t ui8PendingRequest;

    //
    // The current break duration used during send break requests.
    //
    uint16_t ui16BreakDuration;

    //
    // The current line control state for the serial port.
    //
    uint16_t ui16ControlLineState;

    //
    // The general serial state.
    //
    uint16_t ui16SerialState;

    //
    // State of any pending operations that could not be handled immediately
    // upon receipt.
    //
    volatile uint16_t ui16DeferredOpFlags;

    //
    // Size of the last transmit.
    //
    uint16_t ui16LastTxSize;

    //
    // The current serial line coding.
    //
    tLineCoding sLineCoding;

    //
    // Serial port receive is blocked.
    //
    volatile bool bRxBlocked;

    //
    // Serial control port is blocked.
    //
    volatile bool bControlBlocked;

    //
    // The connection status of the device.
    //
    volatile bool bConnected;

    //
    // The control endpoint number, this is modified in composite devices.
    //
    uint8_t ui8ControlEndpoint;

    //
    // The IN endpoint number, this is modified in composite devices.
    //
    uint8_t ui8BulkINEndpoint;

    //
    // The OUT endpoint number, this is modified in composite devices.
    //
    uint8_t ui8BulkOUTEndpoint;

    //
    // The interface number for the control interface, this is modified in
    // composite devices.
    //
    uint8_t ui8InterfaceControl;

    //
    // The interface number for the data interface, this is modified in
    // composite devices.
    //
    uint8_t ui8InterfaceData;
}
tCDCSerInstance;

//*****************************************************************************
//
// The following defines are used when working with composite devices.
//
//*****************************************************************************

//*****************************************************************************
//
// This is the size of the g_pui8IADSerDescriptor array in bytes.
//
//*****************************************************************************
#define SERDESCRIPTOR_SIZE      (8)

//*****************************************************************************
//
// This is the size of the g_pui8CDCSerCommInterface array in bytes.
//
//*****************************************************************************
#define SERCOMMINTERFACE_SIZE   (35)

//*****************************************************************************
//
// This is the size of the g_pui8CDCSerDataInterface array in bytes.
//
//*****************************************************************************
#define SERDATAINTERFACE_SIZE    (23)

//*****************************************************************************
//
//
//*****************************************************************************
#define COMPOSITE_DCDC_SIZE     (SERDESCRIPTOR_SIZE + SERCOMMINTERFACE_SIZE + \
                                 SERDATAINTERFACE_SIZE)

//*****************************************************************************
//
// CDC-specific events These events are provided to the application in the
// \e ui32Msg parameter of the tUSBCallback function.
//
//*****************************************************************************

//
//
#define USBD_CDC_EVENT_SEND_BREAK (USBD_CDC_EVENT_BASE + 0)

//
//
#define USBD_CDC_EVENT_CLEAR_BREAK (USBD_CDC_EVENT_BASE + 1)

//
//
#define USBD_CDC_EVENT_SET_CONTROL_LINE_STATE (USBD_CDC_EVENT_BASE + 2)

//
//
#define USBD_CDC_EVENT_SET_LINE_CODING (USBD_CDC_EVENT_BASE + 3)

//
//
#define USBD_CDC_EVENT_GET_LINE_CODING (USBD_CDC_EVENT_BASE + 4)

//*****************************************************************************
//
//
//*****************************************************************************
typedef struct
{
    //
    //
    const uint16_t ui16VID;

    //
    //
    const uint16_t ui16PID;

    //
    //
    const uint16_t ui16MaxPowermA;

    //
    //
    const uint8_t ui8PwrAttributes;

    //
    //
    const tUSBCallback pfnControlCallback;

    //
    //
    void *pvControlCBData;

    //
    //
    const tUSBCallback pfnRxCallback;

    //
    //
    void *pvRxCBData;

    //
    //
    const tUSBCallback pfnTxCallback;

    //
    //
    void *pvTxCBData;

    //
    //
    const uint8_t * const *ppui8StringDescriptors;

    //
    //
    const uint32_t ui32NumStringDescriptors;

    //
    //
    tCDCSerInstance sPrivateData;
}
tUSBDCDCDevice;

//*****************************************************************************
//
// API Function Prototypes
//
//*****************************************************************************
extern void *USBDCDCCompositeInit(uint32_t ui32Index,
                                  tUSBDCDCDevice *psCDCDevice,
                                  tCompositeEntry *psCompEntry);
extern void *USBDCDCInit(uint32_t ui32Index,
                         tUSBDCDCDevice *psCDCDevice);
extern void USBDCDCTerm(void *pvCDCDevice);
extern void *USBDCDCSetControlCBData(void *pvCDCDevice, void *pvCBData);
extern void *USBDCDCSetRxCBData(void *pvCDCDevice, void *pvCBData);
extern void *USBDCDCSetTxCBData(void *pvCDCDevice, void *pvCBData);
extern uint32_t USBDCDCPacketWrite(void *pvCDCDevice, uint8_t *pi8Data,
                                   uint32_t ui32Length, bool bLast);
extern uint32_t USBDCDCPacketRead(void *pvCDCDevice, uint8_t *pi8Data,
                                  uint32_t ui32Length, bool bLast);
extern uint32_t USBDCDCTxPacketAvailable(void *pvCDCDevice);
extern uint32_t USBDCDCRxPacketAvailable(void *pvCDCDevice);
extern void USBDCDCSerialStateChange(void *pvCDCDevice, uint16_t ui16State);
extern bool USBDCDCRemoteWakeupRequest(void *pvCDCDevice);

//*****************************************************************************
//
// Close the Doxygen group.
//
//*****************************************************************************

//*****************************************************************************
//
// The following APIs are deprecated.
//
//*****************************************************************************
#ifndef DEPRECATED

//
// Use USBDCDFeatureSet() or USBHCDFeatureSet() with \b USBLIB_FEATURE_POWER
// configuration option.
//
extern void USBDCDCPowerStatusSet(void *pvCDCDevice, uint8_t ui8Power);
#endif

//*****************************************************************************
//
// Mark the end of the C bindings section for C++ compilers.
//
//*****************************************************************************
#ifdef __cplusplus
}
#endif

#endif // __USBDCDC_H__