/*******************************************************************************
File Information:
FileName: usb_function_hid.h
Dependencies: See INCLUDES section
Processor: PIC18 or PIC24 USB Microcontrollers
Hardware: The code is natively intended to be used on the following
hardware platforms: PICDEM FS USB Demo Board,
PIC18F87J50 FS USB Plug-In Module, or
Explorer 16 + PIC24 USB PIM. The firmware may be
modified for use on other USB platforms by editing the
HardwareProfile.h file.
Complier: Microchip C18 (for PIC18) or C30 (for PIC24)
Company: Microchip Technology, Inc.
Software License Agreement:
The software supplied herewith by Microchip Technology Incorporated
(the Company) for its PIC® Microcontroller is intended and
supplied to you, the Companys customer, for use solely and
exclusively on Microchip PIC Microcontroller products. The
software is owned by the Company and/or its supplier, and is
protected under applicable copyright laws. All rights are reserved.
Any use in violation of the foregoing restrictions may subject the
user to criminal sanctions under applicable laws, as well as to
civil liability for the breach of the terms and conditions of this
license.
THIS SOFTWARE IS PROVIDED IN AN AS IS CONDITION. 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. THE COMPANY SHALL NOT,
IN ANY CIRCUMSTANCES, BE LIABLE FOR SPECIAL, INCIDENTAL OR
CONSEQUENTIAL DAMAGES, FOR ANY REASON WHATSOEVER.
Summary:
This file contains all of functions, macros, definitions, variables,
datatypes, etc. that are required for usage with the HID function
driver. This file should be included in projects that use the HID
\function driver. This file should also be included into the
usb_descriptors.c file and any other user file that requires access to the
HID interface.
This file is located in the "\<Install Directory\>\\Microchip\\Include\\USB"
directory.
Description:
USB HID Function Driver File
This file contains all of functions, macros, definitions, variables,
datatypes, etc. that are required for usage with the HID function
driver. This file should be included in projects that use the HID
\function driver. This file should also be included into the
usb_descriptors.c file and any other user file that requires access to the
HID interface.
This file is located in the "\<Install Directory\>\\Microchip\\Include\\USB"
directory.
When including this file in a new project, this file can either be
referenced from the directory in which it was installed or copied
directly into the user application folder. If the first method is
chosen to keep the file located in the folder in which it is installed
then include paths need to be added so that the library and the
application both know where to reference each others files. If the
application folder is located in the same folder as the Microchip
folder (like the current demo folders), then the following include
paths need to be added to the application's project:
..\\..\\Microchip\\Include
.
If a different directory structure is used, modify the paths as
required. An example using absolute paths instead of relative paths
would be the following:
C:\\Microchip Solutions\\Microchip\\Include
C:\\Microchip Solutions\\My Demo Application
Change History:
Rev Description
---- ------------------------------------------
1.0 Initial release
2.1 Updated for simplicity and to use common
coding style
2.6 Minor changes in defintions
2.6a- No change
2.7a
*******************************************************************/
#ifndef HID_H
#define HID_H
//DOM-IGNORE-END
/** INCLUDES *******************************************************/
/** DEFINITIONS ****************************************************/
/* Class-Specific Requests */
#define GET_REPORT 0x01
#define GET_IDLE 0x02
#define GET_PROTOCOL 0x03
#define SET_REPORT 0x09
#define SET_IDLE 0x0A
#define SET_PROTOCOL 0x0B
/* Class Descriptor Types */
#define DSC_HID 0x21
#define DSC_RPT 0x22
#define DSC_PHY 0x23
/* Protocol Selection */
#define BOOT_PROTOCOL 0x00
#define RPT_PROTOCOL 0x01
/* HID Interface Class Code */
#define HID_INTF 0x03
/* HID Interface Class SubClass Codes */
#define BOOT_INTF_SUBCLASS 0x01
/* HID Interface Class Protocol Codes */
#define HID_PROTOCOL_NONE 0x00
#define HID_PROTOCOL_KEYBOARD 0x01
#define HID_PROTOCOL_MOUSE 0x02
/********************************************************************
Function:
BOOL HIDTxHandleBusy(USB_HANDLE handle)
Summary:
Retreives the status of the buffer ownership
Description:
Retreives the status of the buffer ownership. This function will
indicate if the previous transfer is complete or not.
This function will take the input handle (pointer to a BDT entry) and
will check the UOWN bit. If the UOWN bit is set then that indicates
that the transfer is not complete and the USB module still owns the data
memory. If the UOWN bit is clear that means that the transfer is
complete and that the CPU now owns the data memory.
For more information about the BDT, please refer to the appropriate
datasheet for the device in use.
Typical Usage:
<code>
//make sure that the last transfer isn't busy by checking the handle
if(!HIDTxHandleBusy(USBInHandle))
{
//Send the data contained in the ToSendDataBuffer[] array out on
// endpoint HID_EP
USBInHandle = HIDTxPacket(HID_EP,(BYTE*)&ToSendDataBuffer[0],sizeof(ToSendDataBuffer));
}
</code>
PreCondition:
None.
Parameters:
USB_HANDLE handle - the handle for the transfer in question.
The handle is returned by the HIDTxPacket() and HIDRxPacket()
functions. Please insure that USB_HANDLE objects are initialized
to NULL.
Return Values:
TRUE - the HID handle is still busy
FALSE - the HID handle is not busy and is ready to send
additional data.
Remarks:
None
*******************************************************************/
#define HIDTxHandleBusy(handle) USBHandleBusy(handle)
/********************************************************************
Function:
BOOL HIDRxHandleBusy(USB_HANDLE handle)
Summary:
Retreives the status of the buffer ownership
Description:
Retreives the status of the buffer ownership. This function will
indicate if the previous transfer is complete or not.
This function will take the input handle (pointer to a BDT entry) and
will check the UOWN bit. If the UOWN bit is set then that indicates
that the transfer is not complete and the USB module still owns the data
memory. If the UOWN bit is clear that means that the transfer is
complete and that the CPU now owns the data memory.
For more information about the BDT, please refer to the appropriate
datasheet for the device in use.
Typical Usage:
<code>
if(!HIDRxHandleBusy(USBOutHandle))
{
//The data is available in the buffer that was specified when the
// HIDRxPacket() was called.
}
</code>
PreCondition:
None
Parameters:
None
Return Values:
TRUE - the HID handle is still busy
FALSE - the HID handle is not busy and is ready to receive
additional data.
Remarks:
None
*******************************************************************/
#define HIDRxHandleBusy(handle) USBHandleBusy(handle)
/********************************************************************
Function:
USB_HANDLE HIDTxPacket(BYTE ep, BYTE* data, WORD len)
Summary:
Sends the specified data out the specified endpoint
Description:
This function sends the specified data out the specified
endpoint and returns a handle to the transfer information.
Typical Usage:
<code>
//make sure that the last transfer isn't busy by checking the handle
if(!HIDTxHandleBusy(USBInHandle))
{
//Send the data contained in the ToSendDataBuffer[] array out on
// endpoint HID_EP
USBInHandle = HIDTxPacket(HID_EP,(BYTE*)&ToSendDataBuffer[0],sizeof(ToSendDataBuffer));
}
</code>
PreCondition:
None
Parameters:
ep - the endpoint you want to send the data out of
data - pointer to the data that you wish to send
len - the length of the data that you wish to send
Return Values:
USB_HANDLE - a handle for the transfer. This information
should be kept to track the status of the transfer
Remarks:
None
*******************************************************************/
#define HIDTxPacket USBTxOnePacket
/********************************************************************
Function:
USB_HANDLE HIDRxPacket(BYTE ep, BYTE* data, WORD len)
Summary:
Receives the specified data out the specified endpoint
Description:
Receives the specified data out the specified endpoint.
Typical Usage:
<code>
//Read 64-bytes from endpoint HID_EP, into the ReceivedDataBuffer array.
// Make sure to save the return handle so that we can check it later
// to determine when the transfer is complete.
USBOutHandle = HIDRxPacket(HID_EP,(BYTE*)&ReceivedDataBuffer,64);
</code>
PreCondition:
None
Parameters:
ep - the endpoint you want to receive the data into
data - pointer to where the data will go when it arrives
len - the length of the data that you wish to receive
Return Values:
USB_HANDLE - a handle for the transfer. This information
should be kept to track the status of the transfer
Remarks:
None
*******************************************************************/
#define HIDRxPacket USBRxOnePacket
// Section: STRUCTURES *********************************************/
//USB HID Descriptor header as detailed in section
//"6.2.1 HID Descriptor" of the HID class definition specification
typedef struct _USB_HID_DSC_HEADER
{
BYTE bDescriptorType; //offset 9
WORD wDscLength; //offset 10
} USB_HID_DSC_HEADER;
//USB HID Descriptor header as detailed in section
//"6.2.1 HID Descriptor" of the HID class definition specification
typedef struct _USB_HID_DSC
{
BYTE bLength; //offset 0
BYTE bDescriptorType; //offset 1
WORD bcdHID; //offset 2
BYTE bCountryCode; //offset 4
BYTE bNumDsc; //offset 5
//USB_HID_DSC_HEADER hid_dsc_header[HID_NUM_OF_DSC];
/* HID_NUM_OF_DSC is defined in usbcfg.h */
} USB_HID_DSC;
/** Section: EXTERNS ********************************************************/
extern volatile unsigned char hid_report_in[HID_INT_IN_EP_SIZE];
extern volatile unsigned char hid_report_out[HID_INT_OUT_EP_SIZE];
extern volatile CTRL_TRF_SETUP SetupPkt;
extern ROM BYTE configDescriptor1[];
extern volatile BYTE CtrlTrfData[USB_EP0_BUFF_SIZE];
#if !defined(__USB_DESCRIPTORS_C)
extern ROM struct{BYTE report[HID_RPT01_SIZE];}hid_rpt01;
#endif
/** Section: PUBLIC PROTOTYPES **********************************************/
void USBCheckHIDRequest(void);
#endif //HID_H
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