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usb_device.c
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usb_device.c
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/********************************************************************
File Information:
FileName: usb_device.c
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 Company’s 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 functions, macros, definitions, variables,
datatypes, etc. that are required for usage with the MCHPFSUSB device
stack. This file should be included in projects that use the device stack.
This file is located in the "\<Install Directory\>\\Microchip\\USB"
directory.
Description:
USB Device Stack File
This file contains functions, macros, definitions, variables,
datatypes, etc. that are required for usage with the MCHPFSUSB device
stack. This file should be included in projects that use the device stack.
This file is located in the "\<Install Directory\>\\Microchip\\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:
.
..\\..\\MicrochipInclude
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
********************************************************************
File Description:
Change History:
Rev Description
---- -----------
2.6 Added USBCancelIO() function. Moved and some stack
defintions to be more consistant with the host stack.
2.6a Fixed issue where a SET_CONFIGURATION received could cause
inability to transmit on an endpoint if using ping-pong
and an odd number of packets had been sent on that endpoint
2.7 Fixed error where the USB error interrupt flag was not getting
cleared properly for PIC32 resulting in lots of extra error interrupts.
http://www.microchip.com/forums/tm.aspx?m=479085
Fixed issue with dual role mode when device run in polling
mode. Interrupts were remaining enabled after the host mode
operation was complete. This was incompatible with polling
mode operation.
Changed how the bus sensing works. In previous revisions it
was impossible to use the USBDeviceDetach to detach from the
bus if the bus voltage was still present. This is now
possible. It was also possible to move the device to the
ATTACHED state in interrupt mode even if the bus voltage
wasn't available. This is now prohibited unless VBUS is
present.
Improved error case handling when the host sends more OUT
bytes in a control transfer than the firmware was expecting
to receive (based on the size parameter when calling USBEP0Receive()).
In the USBStdSetCfgHandler(), modified the code so the USBDeviceState
variable only gets updated to the CONFIGURED_STATE at the end of the
function.
2.7a Update to support the PIC18F47J53 A1 and later revision
devices.
Fixed an error on 16-bit and 32-bit processors where a word access
could be performed on a byte pointer resulting in possible address
errors with odd aligned pointers.
********************************************************************/
/** INCLUDES *******************************************************/
#include "GenericTypeDefs.h"
#include "Compiler.h"
#include "USB.h"
#include "HardwareProfile.h"
#if defined(USB_USE_MSD)
#include "usb_function_msd.h"
#endif
#if defined(__C32__)
#if (USB_PING_PONG_MODE != USB_PING_PONG__FULL_PING_PONG)
#error "PIC32 only supports full ping pong mode. A different mode other than full ping pong is selected in the usb_config.h file."
#endif
#endif
//#define DEBUG_MODE
#ifdef DEBUG_MODE
#include "uart2.h"
#endif
#if !defined(USE_USB_BUS_SENSE_IO)
#undef USB_BUS_SENSE
#define USB_BUS_SENSE 1
#endif
/** Definitions ****************************************************/
/* v2.1 fix - Short Packet States - Used by Control Transfer Read - CTRL_TRF_TX */
#define SHORT_PKT_NOT_USED 0
#define SHORT_PKT_PENDING 1
#define SHORT_PKT_SENT 2
/* Control Transfer States */
#define WAIT_SETUP 0
#define CTRL_TRF_TX 1
#define CTRL_TRF_RX 2
#if (USB_PING_PONG_MODE == USB_PING_PONG__NO_PING_PONG)
#define USB_NEXT_EP0_OUT_PING_PONG 0x0000 // Used in USB Device Mode only
#define USB_NEXT_EP0_IN_PING_PONG 0x0000 // Used in USB Device Mode only
#define USB_NEXT_PING_PONG 0x0000 // Used in USB Device Mode only
#define EP0_OUT_EVEN 0 // Used in USB Device Mode only
#define EP0_OUT_ODD 0 // Used in USB Device Mode only
#define EP0_IN_EVEN 1 // Used in USB Device Mode only
#define EP0_IN_ODD 1 // Used in USB Device Mode only
#define EP1_OUT_EVEN 2 // Used in USB Device Mode only
#define EP1_OUT_ODD 2 // Used in USB Device Mode only
#define EP1_IN_EVEN 3 // Used in USB Device Mode only
#define EP1_IN_ODD 3 // Used in USB Device Mode only
#define EP2_OUT_EVEN 4 // Used in USB Device Mode only
#define EP2_OUT_ODD 4 // Used in USB Device Mode only
#define EP2_IN_EVEN 5 // Used in USB Device Mode only
#define EP2_IN_ODD 5 // Used in USB Device Mode only
#define EP3_OUT_EVEN 6 // Used in USB Device Mode only
#define EP3_OUT_ODD 6 // Used in USB Device Mode only
#define EP3_IN_EVEN 7 // Used in USB Device Mode only
#define EP3_IN_ODD 7 // Used in USB Device Mode only
#define EP4_OUT_EVEN 8 // Used in USB Device Mode only
#define EP4_OUT_ODD 8 // Used in USB Device Mode only
#define EP4_IN_EVEN 9 // Used in USB Device Mode only
#define EP4_IN_ODD 9 // Used in USB Device Mode only
#define EP5_OUT_EVEN 10 // Used in USB Device Mode only
#define EP5_OUT_ODD 10 // Used in USB Device Mode only
#define EP5_IN_EVEN 11 // Used in USB Device Mode only
#define EP5_IN_ODD 11 // Used in USB Device Mode only
#define EP6_OUT_EVEN 12 // Used in USB Device Mode only
#define EP6_OUT_ODD 12 // Used in USB Device Mode only
#define EP6_IN_EVEN 13 // Used in USB Device Mode only
#define EP6_IN_ODD 13 // Used in USB Device Mode only
#define EP7_OUT_EVEN 14 // Used in USB Device Mode only
#define EP7_OUT_ODD 14 // Used in USB Device Mode only
#define EP7_IN_EVEN 15 // Used in USB Device Mode only
#define EP7_IN_ODD 15 // Used in USB Device Mode only
#define EP8_OUT_EVEN 16 // Used in USB Device Mode only
#define EP8_OUT_ODD 16 // Used in USB Device Mode only
#define EP8_IN_EVEN 17 // Used in USB Device Mode only
#define EP8_IN_ODD 17 // Used in USB Device Mode only
#define EP9_OUT_EVEN 18 // Used in USB Device Mode only
#define EP9_OUT_ODD 18 // Used in USB Device Mode only
#define EP9_IN_EVEN 19 // Used in USB Device Mode only
#define EP9_IN_ODD 19 // Used in USB Device Mode only
#define EP10_OUT_EVEN 20 // Used in USB Device Mode only
#define EP10_OUT_ODD 20 // Used in USB Device Mode only
#define EP10_IN_EVEN 21 // Used in USB Device Mode only
#define EP10_IN_ODD 21 // Used in USB Device Mode only
#define EP11_OUT_EVEN 22 // Used in USB Device Mode only
#define EP11_OUT_ODD 22 // Used in USB Device Mode only
#define EP11_IN_EVEN 23 // Used in USB Device Mode only
#define EP11_IN_ODD 23 // Used in USB Device Mode only
#define EP12_OUT_EVEN 24 // Used in USB Device Mode only
#define EP12_OUT_ODD 24 // Used in USB Device Mode only
#define EP12_IN_EVEN 25 // Used in USB Device Mode only
#define EP12_IN_ODD 25 // Used in USB Device Mode only
#define EP13_OUT_EVEN 26 // Used in USB Device Mode only
#define EP13_OUT_ODD 26 // Used in USB Device Mode only
#define EP13_IN_EVEN 27 // Used in USB Device Mode only
#define EP13_IN_ODD 27 // Used in USB Device Mode only
#define EP14_OUT_EVEN 28 // Used in USB Device Mode only
#define EP14_OUT_ODD 28 // Used in USB Device Mode only
#define EP14_IN_EVEN 29 // Used in USB Device Mode only
#define EP14_IN_ODD 29 // Used in USB Device Mode only
#define EP15_OUT_EVEN 30 // Used in USB Device Mode only
#define EP15_OUT_ODD 30 // Used in USB Device Mode only
#define EP15_IN_EVEN 31 // Used in USB Device Mode only
#define EP15_IN_ODD 31 // Used in USB Device Mode only
#define EP(ep,dir,pp) (2*ep+dir) // Used in USB Device Mode only
#define BD(ep,dir,pp) ((8 * ep) + (4 * dir)) // Used in USB Device Mode only
#elif (USB_PING_PONG_MODE == USB_PING_PONG__EP0_OUT_ONLY)
#define USB_NEXT_EP0_OUT_PING_PONG 0x0004
#define USB_NEXT_EP0_IN_PING_PONG 0x0000
#define USB_NEXT_PING_PONG 0x0000
#define EP0_OUT_EVEN 0
#define EP0_OUT_ODD 1
#define EP0_IN_EVEN 2
#define EP0_IN_ODD 2
#define EP1_OUT_EVEN 3
#define EP1_OUT_ODD 3
#define EP1_IN_EVEN 4
#define EP1_IN_ODD 4
#define EP2_OUT_EVEN 5
#define EP2_OUT_ODD 5
#define EP2_IN_EVEN 6
#define EP2_IN_ODD 6
#define EP3_OUT_EVEN 7
#define EP3_OUT_ODD 7
#define EP3_IN_EVEN 8
#define EP3_IN_ODD 8
#define EP4_OUT_EVEN 9
#define EP4_OUT_ODD 9
#define EP4_IN_EVEN 10
#define EP4_IN_ODD 10
#define EP5_OUT_EVEN 11
#define EP5_OUT_ODD 11
#define EP5_IN_EVEN 12
#define EP5_IN_ODD 12
#define EP6_OUT_EVEN 13
#define EP6_OUT_ODD 13
#define EP6_IN_EVEN 14
#define EP6_IN_ODD 14
#define EP7_OUT_EVEN 15
#define EP7_OUT_ODD 15
#define EP7_IN_EVEN 16
#define EP7_IN_ODD 16
#define EP8_OUT_EVEN 17
#define EP8_OUT_ODD 17
#define EP8_IN_EVEN 18
#define EP8_IN_ODD 18
#define EP9_OUT_EVEN 19
#define EP9_OUT_ODD 19
#define EP9_IN_EVEN 20
#define EP9_IN_ODD 20
#define EP10_OUT_EVEN 21
#define EP10_OUT_ODD 21
#define EP10_IN_EVEN 22
#define EP10_IN_ODD 22
#define EP11_OUT_EVEN 23
#define EP11_OUT_ODD 23
#define EP11_IN_EVEN 24
#define EP11_IN_ODD 24
#define EP12_OUT_EVEN 25
#define EP12_OUT_ODD 25
#define EP12_IN_EVEN 26
#define EP12_IN_ODD 26
#define EP13_OUT_EVEN 27
#define EP13_OUT_ODD 27
#define EP13_IN_EVEN 28
#define EP13_IN_ODD 28
#define EP14_OUT_EVEN 29
#define EP14_OUT_ODD 29
#define EP14_IN_EVEN 30
#define EP14_IN_ODD 30
#define EP15_OUT_EVEN 31
#define EP15_OUT_ODD 31
#define EP15_IN_EVEN 32
#define EP15_IN_ODD 32
#define EP(ep,dir,pp) (2*ep+dir+(((ep==0)&&(dir==0))?pp:2))
#define BD(ep,dir,pp) (4*(ep+dir+(((ep==0)&&(dir==0))?pp:2)))
#elif (USB_PING_PONG_MODE == USB_PING_PONG__FULL_PING_PONG)
#if defined (__18CXX) || defined(__C30__)
#define USB_NEXT_EP0_OUT_PING_PONG 0x0004
#define USB_NEXT_EP0_IN_PING_PONG 0x0004
#define USB_NEXT_PING_PONG 0x0004
#elif defined(__C32__)
#define USB_NEXT_EP0_OUT_PING_PONG 0x0008
#define USB_NEXT_EP0_IN_PING_PONG 0x0008
#define USB_NEXT_PING_PONG 0x0008
#else
#error "Not defined for this compiler"
#endif
#define EP0_OUT_EVEN 0
#define EP0_OUT_ODD 1
#define EP0_IN_EVEN 2
#define EP0_IN_ODD 3
#define EP1_OUT_EVEN 4
#define EP1_OUT_ODD 5
#define EP1_IN_EVEN 6
#define EP1_IN_ODD 7
#define EP2_OUT_EVEN 8
#define EP2_OUT_ODD 9
#define EP2_IN_EVEN 10
#define EP2_IN_ODD 11
#define EP3_OUT_EVEN 12
#define EP3_OUT_ODD 13
#define EP3_IN_EVEN 14
#define EP3_IN_ODD 15
#define EP4_OUT_EVEN 16
#define EP4_OUT_ODD 17
#define EP4_IN_EVEN 18
#define EP4_IN_ODD 19
#define EP5_OUT_EVEN 20
#define EP5_OUT_ODD 21
#define EP5_IN_EVEN 22
#define EP5_IN_ODD 23
#define EP6_OUT_EVEN 24
#define EP6_OUT_ODD 25
#define EP6_IN_EVEN 26
#define EP6_IN_ODD 27
#define EP7_OUT_EVEN 28
#define EP7_OUT_ODD 29
#define EP7_IN_EVEN 30
#define EP7_IN_ODD 31
#define EP8_OUT_EVEN 32
#define EP8_OUT_ODD 33
#define EP8_IN_EVEN 34
#define EP8_IN_ODD 35
#define EP9_OUT_EVEN 36
#define EP9_OUT_ODD 37
#define EP9_IN_EVEN 38
#define EP9_IN_ODD 39
#define EP10_OUT_EVEN 40
#define EP10_OUT_ODD 41
#define EP10_IN_EVEN 42
#define EP10_IN_ODD 43
#define EP11_OUT_EVEN 44
#define EP11_OUT_ODD 45
#define EP11_IN_EVEN 46
#define EP11_IN_ODD 47
#define EP12_OUT_EVEN 48
#define EP12_OUT_ODD 49
#define EP12_IN_EVEN 50
#define EP12_IN_ODD 51
#define EP13_OUT_EVEN 52
#define EP13_OUT_ODD 53
#define EP13_IN_EVEN 54
#define EP13_IN_ODD 55
#define EP14_OUT_EVEN 56
#define EP14_OUT_ODD 57
#define EP14_IN_EVEN 58
#define EP14_IN_ODD 59
#define EP15_OUT_EVEN 60
#define EP15_OUT_ODD 61
#define EP15_IN_EVEN 62
#define EP15_IN_ODD 63
#define EP(ep,dir,pp) (4*ep+2*dir+pp)
#if defined (__18CXX) || defined(__C30__)
#define BD(ep,dir,pp) (4*(4*ep+2*dir+pp))
#elif defined(__C32__)
#define BD(ep,dir,pp) (8*(4*ep+2*dir+pp))
#else
#error "Not defined for this compiler"
#endif
#elif (USB_PING_PONG_MODE == USB_PING_PONG__ALL_BUT_EP0)
#define USB_NEXT_EP0_OUT_PING_PONG 0x0000
#define USB_NEXT_EP0_IN_PING_PONG 0x0000
#define USB_NEXT_PING_PONG 0x0004
#define EP0_OUT_EVEN 0
#define EP0_OUT_ODD 0
#define EP0_IN_EVEN 1
#define EP0_IN_ODD 1
#define EP1_OUT_EVEN 2
#define EP1_OUT_ODD 3
#define EP1_IN_EVEN 4
#define EP1_IN_ODD 5
#define EP2_OUT_EVEN 6
#define EP2_OUT_ODD 7
#define EP2_IN_EVEN 8
#define EP2_IN_ODD 9
#define EP3_OUT_EVEN 10
#define EP3_OUT_ODD 11
#define EP3_IN_EVEN 12
#define EP3_IN_ODD 13
#define EP4_OUT_EVEN 14
#define EP4_OUT_ODD 15
#define EP4_IN_EVEN 16
#define EP4_IN_ODD 17
#define EP5_OUT_EVEN 18
#define EP5_OUT_ODD 19
#define EP5_IN_EVEN 20
#define EP5_IN_ODD 21
#define EP6_OUT_EVEN 22
#define EP6_OUT_ODD 23
#define EP6_IN_EVEN 24
#define EP6_IN_ODD 25
#define EP7_OUT_EVEN 26
#define EP7_OUT_ODD 27
#define EP7_IN_EVEN 28
#define EP7_IN_ODD 29
#define EP8_OUT_EVEN 30
#define EP8_OUT_ODD 31
#define EP8_IN_EVEN 32
#define EP8_IN_ODD 33
#define EP9_OUT_EVEN 34
#define EP9_OUT_ODD 35
#define EP9_IN_EVEN 36
#define EP9_IN_ODD 37
#define EP10_OUT_EVEN 38
#define EP10_OUT_ODD 39
#define EP10_IN_EVEN 40
#define EP10_IN_ODD 41
#define EP11_OUT_EVEN 42
#define EP11_OUT_ODD 43
#define EP11_IN_EVEN 44
#define EP11_IN_ODD 45
#define EP12_OUT_EVEN 46
#define EP12_OUT_ODD 47
#define EP12_IN_EVEN 48
#define EP12_IN_ODD 49
#define EP13_OUT_EVEN 50
#define EP13_OUT_ODD 51
#define EP13_IN_EVEN 52
#define EP13_IN_ODD 53
#define EP14_OUT_EVEN 54
#define EP14_OUT_ODD 55
#define EP14_IN_EVEN 56
#define EP14_IN_ODD 57
#define EP15_OUT_EVEN 58
#define EP15_OUT_ODD 59
#define EP15_IN_EVEN 60
#define EP15_IN_ODD 61
#define EP(ep,dir,pp) (4*ep+2*dir+((ep==0)?0:(pp-2)))
#define BD(ep,dir,pp) (4*(4*ep+2*dir+((ep==0)?0:(pp-2))))
#else
#error "No ping pong mode defined."
#endif
/** VARIABLES ******************************************************/
#pragma udata
USB_VOLATILE USB_DEVICE_STATE USBDeviceState;
USB_VOLATILE BYTE USBActiveConfiguration;
USB_VOLATILE BYTE USBAlternateInterface[USB_MAX_NUM_INT];
volatile BDT_ENTRY *pBDTEntryEP0OutCurrent;
volatile BDT_ENTRY *pBDTEntryEP0OutNext;
volatile BDT_ENTRY *pBDTEntryOut[USB_MAX_EP_NUMBER+1];
volatile BDT_ENTRY *pBDTEntryIn[USB_MAX_EP_NUMBER+1];
USB_VOLATILE BYTE shortPacketStatus;
USB_VOLATILE BYTE controlTransferState;
USB_VOLATILE IN_PIPE inPipes[1];
USB_VOLATILE OUT_PIPE outPipes[1];
USB_VOLATILE BYTE *pDst;
USB_VOLATILE BOOL RemoteWakeup;
USB_VOLATILE BYTE USTATcopy;
USB_VOLATILE BOOL BothEP0OutUOWNsSet;
USB_VOLATILE WORD USBInMaxPacketSize[USB_MAX_EP_NUMBER];
USB_VOLATILE BYTE *USBInData[USB_MAX_EP_NUMBER];
/** USB FIXED LOCATION VARIABLES ***********************************/
#if defined(__18CXX)
#if defined(__18F14K50) || defined(__18F13K50) || defined(__18LF14K50) || defined(__18LF13K50)
#pragma udata USB_BDT=0x200 //See Linker Script, BDT in bank 2 on these devices - usb2:0x200-0x2FF(256-byte)
#elif defined(__18F47J53) || defined(__18F46J53) || defined(__18F27J53) || defined(__18F26J53) || defined(__18LF47J53) || defined(__18LF46J53) || defined(__18LF27J53) || defined(__18LF26J53)
#pragma udata USB_BDT=0xD00 //BDT in Bank 13 on these devices
#else
#pragma udata USB_BDT=0x400 //All other PIC18 devices place the BDT in usb4:0x400-0x4FF(256-byte)
#endif
#endif
/********************************************************************
* Section A: Buffer Descriptor Table
* - 256 bytes max. Actual size depends on number of endpoints enabled and
* the ping pong buffering mode.
* - USB_MAX_EP_NUMBER is defined in usb_config.h
*******************************************************************/
#if (USB_PING_PONG_MODE == USB_PING_PONG__NO_PING_PONG)
volatile BDT_ENTRY BDT[(USB_MAX_EP_NUMBER + 1) * 2] __attribute__ ((aligned (512)));
#elif (USB_PING_PONG_MODE == USB_PING_PONG__EP0_OUT_ONLY)
volatile BDT_ENTRY BDT[((USB_MAX_EP_NUMBER + 1) * 2)+1] __attribute__ ((aligned (512)));
#elif (USB_PING_PONG_MODE == USB_PING_PONG__FULL_PING_PONG)
volatile BDT_ENTRY BDT[(USB_MAX_EP_NUMBER + 1) * 4] __attribute__ ((aligned (512)));
#elif (USB_PING_PONG_MODE == USB_PING_PONG__ALL_BUT_EP0)
volatile BDT_ENTRY BDT[((USB_MAX_EP_NUMBER + 1) * 4)-2] __attribute__ ((aligned (512)));
#else
#error "No ping pong mode defined."
#endif
/********************************************************************
* Section B: EP0 Buffer Space
*******************************************************************/
volatile CTRL_TRF_SETUP SetupPkt; // 8-byte only
volatile BYTE CtrlTrfData[USB_EP0_BUFF_SIZE];
/********************************************************************
* Section C: non-EP0 Buffer Space
*******************************************************************/
// Can provide compile time option to do software pingpong
#if defined(USB_USE_HID)
volatile unsigned char hid_report_out[HID_INT_OUT_EP_SIZE];
volatile unsigned char hid_report_in[HID_INT_IN_EP_SIZE];
#endif
#if defined(USB_USE_MSD)
//volatile far USB_MSD_CBW_CSW msd_cbw_csw;
volatile USB_MSD_CBW msd_cbw;
volatile USB_MSD_CSW msd_csw;
//#pragma udata
#if defined(__18CXX)
#pragma udata myMSD=MSD_BUFFER_ADDRESS
#endif
volatile char msd_buffer[512];
#endif
#if defined(__18CXX)
#pragma udata
#endif
//Depricated in v2.2 - will be removed in a future revision
#if !defined(USB_USER_DEVICE_DESCRIPTOR)
//Device descriptor
extern ROM USB_DEVICE_DESCRIPTOR device_dsc;
#else
USB_USER_DEVICE_DESCRIPTOR_INCLUDE;
#endif
#if !defined(USB_USER_CONFIG_DESCRIPTOR)
//Array of configuration descriptors
extern ROM BYTE *ROM USB_CD_Ptr[];
#else
USB_USER_CONFIG_DESCRIPTOR_INCLUDE;
#endif
extern ROM BYTE *ROM USB_SD_Ptr[];
/** DECLARATIONS ***************************************************/
#pragma code
/** Macros *********************************************************/
/****** Event callback enabling/disabling macros ********************
This section of code is used to disable specific USB events that may not be
desired by the user. This can save code size and increase throughput and
decrease CPU utiliazation.
********************************************************************/
#if defined USB_DISABLE_SUSPEND_HANDLER
#define USB_SUSPEND_HANDLER(event,pointer,size)
#warning "Disabling the suspend handler is not recommended. Proper suspend handling is required to create a compliant USB device."
#else
#define USB_SUSPEND_HANDLER(event,pointer,size) USER_USB_CALLBACK_EVENT_HANDLER(event,pointer,size)
#endif
#if defined USB_DISABLE_WAKEUP_FROM_SUSPEND_HANDLER
#define USB_WAKEUP_FROM_SUSPEND_HANDLER(event,pointer,size)
#warning "Disabling the wake from suspend handler is not recommended. Proper suspend handling is required to create a compliant USB device."
#else
#define USB_WAKEUP_FROM_SUSPEND_HANDLER(event,pointer,size) USER_USB_CALLBACK_EVENT_HANDLER(event,pointer,size)
#endif
#if defined USB_DISABLE_SOF_HANDLER
#define USB_SOF_HANDLER(event,pointer,size)
#else
#define USB_SOF_HANDLER(event,pointer,size) USER_USB_CALLBACK_EVENT_HANDLER(event,pointer,size)
#endif
#if defined USB_DISABLE_ERROR_HANDLER
#define USB_ERROR_HANDLER(event,pointer,size)
#else
#define USB_ERROR_HANDLER(event,pointer,size) USER_USB_CALLBACK_EVENT_HANDLER(event,pointer,size)
#endif
#if defined USB_DISABLE_NONSTANDARD_EP0_REQUEST_HANDLER
#define USB_DISABLE_NONSTANDARD_EP0_REQUEST_HANDLER(event,pointer,size)
#else
#define USB_DISABLE_NONSTANDARD_EP0_REQUEST_HANDLER(event,pointer,size) USER_USB_CALLBACK_EVENT_HANDLER(event,pointer,size)
#endif
#if defined USB_DISABLE_SET_DESCRIPTOR_HANDLER
#define USB_SET_DESCRIPTOR_HANDLER(event,pointer,size)
#else
#define USB_SET_DESCRIPTOR_HANDLER(event,pointer,size) USER_USB_CALLBACK_EVENT_HANDLER(event,pointer,size)
#endif
#if defined USB_DISABLE_SET_CONFIGURATION_HANDLER
#define USB_SET_CONFIGURATION_HANDLER(event,pointer,size)
#else
#define USB_SET_CONFIGURATION_HANDLER(event,pointer,size) USER_USB_CALLBACK_EVENT_HANDLER(event,pointer,size)
#endif
#if defined USB_DISABLE_TRANSFER_COMPLETE_HANDLER
#define USB_TRASFER_COMPLETE_HANDLER(event,pointer,size)
#else
#define USB_TRASFER_COMPLETE_HANDLER(event,pointer,size) USER_USB_CALLBACK_EVENT_HANDLER(event,pointer,size)
#endif
/** Function Prototypes ********************************************/
//External
//This is the prototype for the required user event handler
BOOL USER_USB_CALLBACK_EVENT_HANDLER(USB_EVENT event, void *pdata, WORD size);
//Internal
void USBCtrlEPService(void);
void USBCtrlTrfSetupHandler(void);
void USBCtrlTrfInHandler(void);
void USBCheckStdRequest(void);
void USBStdGetDscHandler(void);
void USBCtrlEPServiceComplete(void);
void USBCtrlTrfTxService(void);
void USBPrepareForNextSetupTrf(void);
void USBCtrlTrfRxService(void);
void USBStdSetCfgHandler(void);
void USBStdGetStatusHandler(void);
void USBStdFeatureReqHandler(void);
void USBCtrlTrfOutHandler(void);
BOOL USBIsTxBusy(BYTE EPNumber);
void USBPut(BYTE EPNum, BYTE Data);
void USBEPService(void);
void USBConfigureEndpoint(BYTE EPNum, BYTE direction);
void USBProtocolResetHandler(void);
void USBWakeFromSuspend(void);
void USBSuspend(void);
void USBStallHandler(void);
USB_HANDLE USBTransferOnePacket(BYTE ep, BYTE dir, BYTE* data, BYTE len);
void USBEnableEndpoint(BYTE ep,BYTE options);
//DOM-IGNORE-BEGIN
/****************************************************************************
Function:
void USBDeviceInit(void)
Description:
This function initializes the device stack
it in the default state
Precondition:
None
Parameters:
None
Return Values:
None
Remarks:
The USB module will be completely reset including
all of the internal variables, registers, and
interrupt flags.
***************************************************************************/
//DOM-IGNORE-END
void USBDeviceInit(void)
{
BYTE i;
USBDisableInterrupts();
// Clear all USB error flags
USBClearInterruptRegister(U1EIR);
// Clears all USB interrupts
USBClearInterruptRegister(U1IR);
SetConfigurationOptions();
//power up the module
USBPowerModule();
//set the address of the BDT (if applicable)
USBSetBDTAddress(BDT);
// Assert reset request to all of the Ping Pong buffer pointers
USBPingPongBufferReset = 1;
// Reset to default address
U1ADDR = 0x00;
//Clear all of the endpoint control registers
DisableNonZeroEndpoints(USB_MAX_EP_NUMBER);
//Stop trying to reset ping pong buffer pointers
USBPingPongBufferReset = 0;
//Clear all of the BDT entries
for(i=0;i<(sizeof(BDT)/sizeof(BDT_ENTRY));i++)
{
BDT[i].Val = 0x00;
}
// Initialize EP0 as a Ctrl EP
U1EP0 = EP_CTRL|USB_HANDSHAKE_ENABLED;
// Flush any pending transactions
while(USBTransactionCompleteIF == 1)
{
USBClearInterruptFlag(USBTransactionCompleteIFReg,USBTransactionCompleteIFBitNum);
}
//clear all of the internal pipe information
inPipes[0].info.Val = 0;
outPipes[0].info.Val = 0;
outPipes[0].wCount.Val = 0;
// Make sure packet processing is enabled
USBPacketDisable = 0;
//Initialize all pBDTEntryIn[] and pBDTEntryOut[]
//pointers to NULL, so they don't get used inadvertently.
for(i = 0; i < (BYTE)(USB_MAX_EP_NUMBER+1u); i++)
{
pBDTEntryIn[i] = 0u;
pBDTEntryOut[i] = 0u;
}
//Get ready for the first packet
pBDTEntryIn[0] = (volatile BDT_ENTRY*)&BDT[EP0_IN_EVEN];
// Clear active configuration
USBActiveConfiguration = 0;
//Indicate that we are now in the detached state
USBDeviceState = DETACHED_STATE;
}
//DOM-IGNORE-BEGIN
/****************************************************************************
Function:
void USBDeviceTasks(void)
Description:
This function is the main state machine of the
USB device side stack. This function should be
called periodically to receive and transmit
packets through the stack. This function should
be called preferably once every 100us
during the enumeration process. After the
enumeration process this function still needs to
be called periodically to respond to various
situations on the bus but is more relaxed in its
time requirements. This function should also
be called at least as fast as the OUT data
expected from the PC.
Precondition:
None
Parameters:
None
Return Values:
None
Remarks:
None
***************************************************************************/
//DOM-IGNORE-END
#if defined(USB_INTERRUPT)
#if defined(__18CXX)
void USBDeviceTasks(void)
#elif defined(__C30__)
//void __attribute__((interrupt,auto_psv,address(0xA800))) _USB1Interrupt()
void __attribute__((interrupt,auto_psv)) _USB1Interrupt()
#elif defined(__PIC32MX__)
#pragma interrupt _USB1Interrupt ipl4 vector 45
void _USB1Interrupt( void )
#endif
#else
void USBDeviceTasks(void)
#endif
{
BYTE i;
#ifdef USB_SUPPORT_OTG
//SRP Time Out Check
if (USBOTGSRPIsReady())
{
if (USBT1MSECIF && USBT1MSECIE)
{
if (USBOTGGetSRPTimeOutFlag())
{
if (USBOTGIsSRPTimeOutExpired())
{
USB_OTGEventHandler(0,OTG_EVENT_SRP_FAILED,0,0);
}
}
//Clear Interrupt Flag
USBClearInterruptFlag(USBT1MSECIFReg,USBT1MSECIFBitNum);
}
}
#endif
#if defined(USB_POLLING)
//If the interrupt option is selected then the customer is required
// to notify the stack when the device is attached or removed from the
// bus by calling the USBDeviceAttach() and USBDeviceDetach() functions.
if (USB_BUS_SENSE != 1)
{
// Disable module & detach from bus
U1CON = 0;
// Mask all USB interrupts
U1IE = 0;
//Move to the detached state
USBDeviceState = DETACHED_STATE;
#ifdef USB_SUPPORT_OTG
//Disable D+ Pullup
U1OTGCONbits.DPPULUP = 0;
//Disable HNP
USBOTGDisableHnp();
//Deactivate HNP
USBOTGDeactivateHnp();
//If ID Pin Changed State
if (USBIDIF && USBIDIE)
{
//Re-detect & Initialize
USBOTGInitialize();
//Clear ID Interrupt Flag
USBClearInterruptFlag(USBIDIFReg,USBIDIFBitNum);
}
#endif
#ifdef __C30__
//USBClearInterruptFlag(U1OTGIR, 3);
#endif
//return so that we don't go through the rest of
//the state machine
USBClearUSBInterrupt();
return;
}
#ifdef USB_SUPPORT_OTG
//If Session Is Started Then
else
{
//If SRP Is Ready
if (USBOTGSRPIsReady())
{
//Clear SRPReady
USBOTGClearSRPReady();
//Clear SRP Timeout Flag
USBOTGClearSRPTimeOutFlag();
//Indicate Session Started
UART2PrintString( "\r\n***** USB OTG B Event - Session Started *****\r\n" );
}
}
#endif //#ifdef USB_SUPPORT_OTG
//if we are in the detached state
if(USBDeviceState == DETACHED_STATE)
{
//Initialize register to known value
U1CON = 0;
// Mask all USB interrupts
U1IE = 0;
//Enable/set things like: pull ups, full/low-speed mode,
//set the ping pong mode, and set internal transceiver
SetConfigurationOptions();
// Enable module & attach to bus
while(!U1CONbits.USBEN){U1CONbits.USBEN = 1;}
//moved to the attached state
USBDeviceState = ATTACHED_STATE;
#ifdef USB_SUPPORT_OTG
U1OTGCON |= USB_OTG_DPLUS_ENABLE | USB_OTG_ENABLE;
#endif
}
#endif //#if defined(USB_POLLING)
if(USBDeviceState == ATTACHED_STATE)
{
/*
* After enabling the USB module, it takes some time for the
* voltage on the D+ or D- line to rise high enough to get out
* of the SE0 condition. The USB Reset interrupt should not be
* unmasked until the SE0 condition is cleared. This helps
* prevent the firmware from misinterpreting this unique event
* as a USB bus reset from the USB host.
*/
if(!USBSE0Event)
{
USBClearInterruptRegister(U1IR);// Clear all USB interrupts
#if defined(USB_POLLING)
U1IE=0; // Mask all USB interrupts
#endif
USBResetIE = 1; // Unmask RESET interrupt
USBIdleIE = 1; // Unmask IDLE interrupt
USBDeviceState = POWERED_STATE;
}
}
#ifdef USB_SUPPORT_OTG
//If ID Pin Changed State
if (USBIDIF && USBIDIE)
{
//Re-detect & Initialize
USBOTGInitialize();
USBClearInterruptFlag(USBIDIFReg,USBIDIFBitNum);
}
#endif
/*
* Task A: Service USB Activity Interrupt
*/
if(USBActivityIF && USBActivityIE)
{
USBClearInterruptFlag(USBActivityIFReg,USBActivityIFBitNum);
#if defined(USB_SUPPORT_OTG)
U1OTGIR = 0x10;
#else
USBWakeFromSuspend();
#endif
}
/*
* Pointless to continue servicing if the device is in suspend mode.
*/
if(USBSuspendControl==1)
{
USBClearUSBInterrupt();
return;
}
/*
* Task B: Service USB Bus Reset Interrupt.
* When bus reset is received during suspend, ACTVIF will be set first,
* once the UCONbits.SUSPND is clear, then the URSTIF bit will be asserted.
* This is why URSTIF is checked after ACTVIF.
*
* The USB reset flag is masked when the USB state is in
* DETACHED_STATE or ATTACHED_STATE, and therefore cannot
* cause a USB reset event during these two states.
*/
if(USBResetIF && USBResetIE)
{
USBDeviceInit();
//Re-enable the interrupts since the USBDeviceInit() function will
// disable them. This will do nothing in a polling setup
USBEnableInterrupts();
USBDeviceState = DEFAULT_STATE;
/********************************************************************
Bug Fix: Feb 26, 2007 v2.1 (#F1)
*********************************************************************
In the original firmware, if an OUT token is sent by the host
before a SETUP token is sent, the firmware would respond with an ACK.
This is not a correct response, the firmware should have sent a STALL.
This is a minor non-compliance since a compliant host should not
send an OUT before sending a SETUP token. The fix allows a SETUP
transaction to be accepted while stalling OUT transactions.
********************************************************************/
BDT[EP0_OUT_EVEN].ADR = ConvertToPhysicalAddress(&SetupPkt);
BDT[EP0_OUT_EVEN].CNT = USB_EP0_BUFF_SIZE;
BDT[EP0_OUT_EVEN].STAT.Val &= ~_STAT_MASK;