usb_std.asm

利用psoc进行usb及capsense的程序编写

;;*****************************************************************************
;;*****************************************************************************
;;  FILENAME: USB_std.asm
;;  @Version@
;;  Generated by PSoC Designer ver 4.2  b1013 : 02 September, 2004
;;
;;  DESCRIPTION: USB Device User Module software implementation file
;;               for the CY8C24090 family of devices
;;
;;  NOTE: User Module APIs conform to the fastcall16 convention for marshalling
;;        arguments and observe the associated "Registers are volatile" policy.
;;        This means it is the caller's responsibility to preserve any values
;;        in the X and A registers that are still needed after the API functions
;;        returns. For Large Memory Model devices it is also the caller's 
;;        responsibility to perserve any value in the CUR_PP, IDX_PP, MVR_PP and 
;;        MVW_PP registers. Even though some of these registers may not be modified
;;        now, there is no guarantee that will remain the case in future releases.
;;-----------------------------------------------------------------------------
;;  Copyright (c) Cypress Semiconductor 2005. All Rights Reserved.
;;*****************************************************************************
;;*****************************************************************************

include "m8c.inc"
include "USB_macros.inc"
include "USB.inc"

;-----------------------------------------------
;  Global Symbols
;-----------------------------------------------

AREA bss (RAM,REL)

;-----------------------------------------------
;  Constant Definitions
;-----------------------------------------------
;-----------------------------------------------
; Variable Allocation
;-----------------------------------------------

AREA UserModules (ROM, REL)

;-----------------------------------------------------------------------------
;  FUNCTION NAME: USB_Not_Supported
;
;  DESCRIPTION:
;
;-----------------------------------------------------------------------------
;
;  ARGUMENTS:
;
;  RETURNS:
;
;  SIDE EFFECTS: REGISTERS ARE VOLATILE: THE A AND X REGISTERS MAY BE MODIFIED!
;
;  THEORY of OPERATION or PROCEDURE:
;
;-----------------------------------------------------------------------------

; d2h_std_dev
IF (USB_CB_SRC_d2h_std_dev_00 & USB_NOT_SUPPORTED)
export  USB_CB_d2h_std_dev_00
USB_CB_d2h_std_dev_00:
ENDIF
IF (USB_CB_SRC_d2h_std_dev_01 & USB_NOT_SUPPORTED)
export  USB_CB_d2h_std_dev_01
USB_CB_d2h_std_dev_01:
ENDIF
IF (USB_CB_SRC_d2h_std_dev_02 & USB_NOT_SUPPORTED)
export  USB_CB_d2h_std_dev_02
USB_CB_d2h_std_dev_02:
ENDIF
IF (USB_CB_SRC_d2h_std_dev_03 & USB_NOT_SUPPORTED)
export  USB_CB_d2h_std_dev_03
USB_CB_d2h_std_dev_03:
ENDIF
IF (USB_CB_SRC_d2h_std_dev_04 & USB_NOT_SUPPORTED)
export  USB_CB_d2h_std_dev_04
USB_CB_d2h_std_dev_04:
ENDIF
IF (USB_CB_SRC_d2h_std_dev_05 & USB_NOT_SUPPORTED)
export  USB_CB_d2h_std_dev_05
USB_CB_d2h_std_dev_05:
ENDIF
IF (USB_CB_SRC_d2h_std_dev_06 & USB_NOT_SUPPORTED)
export  USB_CB_d2h_std_dev_06
USB_CB_d2h_std_dev_06:
ENDIF
IF (USB_CB_SRC_d2h_std_dev_07 & USB_NOT_SUPPORTED)
export  USB_CB_d2h_std_dev_07
USB_CB_d2h_std_dev_07:
ENDIF
IF (USB_CB_SRC_d2h_std_dev_08 & USB_NOT_SUPPORTED)
export  USB_CB_d2h_std_dev_08
USB_CB_d2h_std_dev_08:
ENDIF

; h2d_std_dev
IF (USB_CB_SRC_h2d_std_dev_00 & USB_NOT_SUPPORTED)
export  USB_CB_h2d_std_dev_00
USB_CB_h2d_std_dev_00:
ENDIF
IF (USB_CB_SRC_h2d_std_dev_01 & USB_NOT_SUPPORTED)
export  USB_CB_h2d_std_dev_01
USB_CB_h2d_std_dev_01:
ENDIF
IF (USB_CB_SRC_h2d_std_dev_02 & USB_NOT_SUPPORTED)
export  USB_CB_h2d_std_dev_02
USB_CB_h2d_std_dev_02:
ENDIF
IF (USB_CB_SRC_h2d_std_dev_03 & USB_NOT_SUPPORTED)
export  USB_CB_h2d_std_dev_03
USB_CB_h2d_std_dev_03:
ENDIF
IF (USB_CB_SRC_h2d_std_dev_04 & USB_NOT_SUPPORTED)
export  USB_CB_h2d_std_dev_04
USB_CB_h2d_std_dev_04:
ENDIF
IF (USB_CB_SRC_h2d_std_dev_05 & USB_NOT_SUPPORTED)
export  USB_CB_h2d_std_dev_05
USB_CB_h2d_std_dev_05:
ENDIF
IF (USB_CB_SRC_h2d_std_dev_06 & USB_NOT_SUPPORTED)
export  USB_CB_h2d_std_dev_06
USB_CB_h2d_std_dev_06:
ENDIF
IF (USB_CB_SRC_h2d_std_dev_07 & USB_NOT_SUPPORTED)
export  USB_CB_h2d_std_dev_07
USB_CB_h2d_std_dev_07:
ENDIF
IF (USB_CB_SRC_h2d_std_dev_08 & USB_NOT_SUPPORTED)
export  USB_CB_h2d_std_dev_08
USB_CB_h2d_std_dev_08:
ENDIF
IF (USB_CB_SRC_h2d_std_dev_09 & USB_NOT_SUPPORTED)
export  USB_CB_h2d_std_dev_09
USB_CB_h2d_std_dev_09:
ENDIF

; d2h_std_ifc
IF (USB_CB_SRC_d2h_std_ifc_00 & USB_NOT_SUPPORTED)
export  USB_CB_d2h_std_ifc_00
USB_CB_d2h_std_ifc_00:
ENDIF
IF (USB_CB_SRC_d2h_std_ifc_01 & USB_NOT_SUPPORTED)
export  USB_CB_d2h_std_ifc_01
USB_CB_d2h_std_ifc_01:
ENDIF
IF (USB_CB_SRC_d2h_std_ifc_02 & USB_NOT_SUPPORTED)
export  USB_CB_d2h_std_ifc_02
USB_CB_d2h_std_ifc_02:
ENDIF
IF (USB_CB_SRC_d2h_std_ifc_03 & USB_NOT_SUPPORTED)
export  USB_CB_d2h_std_ifc_03
USB_CB_d2h_std_ifc_03:
ENDIF
IF (USB_CB_SRC_d2h_std_ifc_04 & USB_NOT_SUPPORTED)
export  USB_CB_d2h_std_ifc_04
USB_CB_d2h_std_ifc_04:
ENDIF
IF (USB_CB_SRC_d2h_std_ifc_05 & USB_NOT_SUPPORTED)
export  USB_CB_d2h_std_ifc_05
USB_CB_d2h_std_ifc_05:
ENDIF
IF (USB_CB_SRC_d2h_std_ifc_06 & USB_NOT_SUPPORTED)
export  USB_CB_d2h_std_ifc_06
USB_CB_d2h_std_ifc_06:
ENDIF
IF (USB_CB_SRC_d2h_std_ifc_07 & USB_NOT_SUPPORTED)
export  USB_CB_d2h_std_ifc_07
USB_CB_d2h_std_ifc_07:
ENDIF
IF (USB_CB_SRC_d2h_std_ifc_08 & USB_NOT_SUPPORTED)
export  USB_CB_d2h_std_ifc_08
USB_CB_d2h_std_ifc_08:
ENDIF
IF (USB_CB_SRC_d2h_std_ifc_09 & USB_NOT_SUPPORTED)
export  USB_CB_d2h_std_ifc_09
USB_CB_d2h_std_ifc_09:
ENDIF
IF (USB_CB_SRC_d2h_std_ifc_10 & USB_NOT_SUPPORTED)
export  USB_CB_d2h_std_ifc_10
USB_CB_d2h_std_ifc_10:
ENDIF

; d2h_std_ifc
IF (USB_CB_SRC_h2d_std_ifc_00 & USB_NOT_SUPPORTED)
export  USB_CB_h2d_std_ifc_00
USB_CB_h2d_std_ifc_00:
ENDIF

; d2h_std_ep
IF (USB_CB_SRC_d2h_std_ep_00 & USB_NOT_SUPPORTED)
export  USB_CB_d2h_std_ep_00
USB_CB_d2h_std_ep_00:
ENDIF

; h2d_std_ep
IF (USB_CB_SRC_h2d_std_ep_00 & USB_NOT_SUPPORTED)
export  USB_CB_h2d_std_ep_00
USB_CB_h2d_std_ep_00:
ENDIF
IF (USB_CB_SRC_h2d_std_ep_01 & USB_NOT_SUPPORTED)
export  USB_CB_h2d_std_ep_01
USB_CB_h2d_std_ep_01:
ENDIF
IF (USB_CB_SRC_h2d_std_ep_02 & USB_NOT_SUPPORTED)
export  USB_CB_h2d_std_ep_02
USB_CB_h2d_std_ep_02:
ENDIF
IF (USB_CB_SRC_h2d_std_ep_03 & USB_NOT_SUPPORTED)
export  USB_CB_h2d_std_ep_03
USB_CB_h2d_std_ep_03:
ENDIF

export  USB_Not_Supported
export _USB_Not_Supported
USB_Not_Supported:
_USB_Not_Supported:
   mov  [USB_TempMode], USB_MODE_STALL_IN_OUT ; Stall the request
   ret
;-----------------------------------------------------------------------------
;  FUNCTION NAME: USB_CB_d2h_std_dev_00
;
;  DESCRIPTION:   Get Device Status
;
;****************************************************************
; STANDARD DEVICE IN REQUEST: Get_Device_Status
;****************************************************************
;
; bmRequestType  : (IN | STANDARD | DEVICE)       = 80h     
; bRequest       : GET_STATUS                     = 00h    
; wValue         : RESERVED                       = 0000h  
; wIndex         : RESERVED                       = 0000h
; wLength        : SIZEOF_ENDPOINT_STATUS         = 0002h  
; 
; The GET_DEVICE_STATUS request returns the current device status.
;
;****************************************************************
;-----------------------------------------------------------------------------
;
;  ARGUMENTS:
;
;  RETURNS:
;
;  SIDE EFFECTS: REGISTERS ARE VOLATILE: THE A AND X REGISTERS MAY BE MODIFIED!
;
;  THEORY of OPERATION or PROCEDURE:
;
;-----------------------------------------------------------------------------
IF (USB_CB_SRC_d2h_std_dev_00 & USB_UM_SUPPLIED)
.LITERAL
GetStatusTransferDescrTable:
    TD_START_TABLE 1                   ; One entry
    TD_ENTRY    USB_DS_RAM, 2, USB_TransferBuffer, NULL_PTR  ; Intermediate Buffer
.ENDLITERAL
export  USB_CB_d2h_std_dev_00
USB_CB_d2h_std_dev_00:
    mov   [USB_t2], 0                  ; Use the UM temp var--Selector

    mov   [USB_TransferBuffer+1], [USB_DeviceStatus]
    mov   [USB_TransferBuffer], 0      ; Use the UM Transfer Buffer

    mov   A,>GetStatusTransferDescrTable  ; Get the ROM Address MSB
    mov   X,<GetStatusTransferDescrTable  ; Get the ROM Address LSB
    jmp   USB_GetTableEntry
ENDIF
;-----------------------------------------------------------------------------
; FUNCTION NAME: USB_CB_d2h_std_dev_06
;
; DESCRIPTION:   Get Device Descriptor
;
;****************************************************************
; STANDARD DEVICE IN REQUEST: Get_Device_Descriptor
;****************************************************************
;
; bmRequestType  : (IN | STANDARD | DEVICE)       = 80h
; bRequest       : GET_DESCRIPTOR                 = 06h    
; wValue         : DESCRIPTOR TYPE | INDEX        = xxxxh  
; wIndex         : ZERO or LANG_ID                = xxxxh
; wLength        : SIZEOF_DESCRIPTOR              = --xxh  
; 
; The GET_DEVICE_DESCRIPTOR returns the specified descriptor if 
; the descriptor exists. 
; 
; The upper byte of wValue contains the descriptor type and 
; the lower byte contains the descriptor index. wIndex 
; contains either 0000h or the Language ID. wLength contains 
; the descriptor length. The actual descriptor information is 
; transferred in subsequent data packets. 
;
;****************************************************************
;
;-----------------------------------------------------------------------------
;
;  ARGUMENTS:
;
;  RETURNS:
;
;  SIDE EFFECTS: REGISTERS ARE VOLATILE: THE A AND X REGISTERS MAY BE MODIFIED!
;
;  THEORY of OPERATION or PROCEDURE:
;
;-----------------------------------------------------------------------------
IF (USB_CB_SRC_d2h_std_dev_06 & USB_UM_SUPPLIED)
export  USB_CB_d2h_std_dev_06
USB_CB_d2h_std_dev_06:
;-----------------------------------------------------------------------------
; Dispatch to the proper handler
;-----------------------------------------------------------------------------
    mov   A, REG[USB_EP0DATA+wValueHi] ; Get the descrptor type
    asl   A                            ; Make it into a offset
    cmp   A, GET_DESCR_DISPATCH_SIZE         ; Validity check
    jnc   USB_Not_Supported

    JACC    GET_DESCR_DISPATCH
.LITERAL
GET_DESCR_DISPATCH:
    jmp   USB_Not_Supported            ; Invalid
    jmp   USB_SendDeviceDescr          ; Device Descriptor
    jmp   USB_SendConfigDescr          ; Configuration Descriptor
IF	USB_bNumStringDescrs                ; Number of String Descriptor defined with the Wizard
    jmp   USB_SendStringDescr          ; String Descriptor
ELSE
    jmp   USB_Not_Supported            ; Not supported if we don't have
                                            ; any String Descriptor
ENDIF
.ENDLITERAL

GET_DESCR_DISPATCH_END:
GET_DESCR_DISPATCH_SIZE: EQU (GET_DESCR_DISPATCH_END - GET_DESCR_DISPATCH)     
;-----------------------------------------------------------------------------
; Configuration Descriptor Handler
;-----------------------------------------------------------------------------
USB_SendConfigDescr:
    call  USB_GET_DEVICE_TABLE_ENTRY
    swap  A, X
    add   A, 2                         ; We want the pointer to the descriptor table (second entry)
    swap  A, X
    adc   A, 0                         ; Don't forget the carry
    mov  [USB_t2], USB_t1              ; Set up the destination  
    call  USB_GETWORD                  ; Get the pointer
    
    mov   A, [USB_t1]                  ; Pointer MSB
    mov   X, [USB_t1+1]                ; Pointer LSB
    
    push  A                            ; Save the MSB
    
    mov   A, REG[USB_EP0DATA+wValueLo] ; Get the descrptor index
    mov   [USB_t2], A                  ; Use the UM temp var--Selector
    pop   A                            ; Need the MSB for the range check
    push  A                            ; Save the MSB for after the range check
    romx                               ; First entry is the table size (only a byte)
    cmp   A, [USB_t2]                  ; Range check
    jnc   .range_ok
    
    pop   A                            ; Fix the stack
    jmp  USB_Not_Supported

.range_ok:
    pop   A                            ; Get the MSB back
    jmp   USB_GetTableEntry
;-----------------------------------------------------------------------------
; Device Descriptor Handler
;-----------------------------------------------------------------------------
USB_SendDeviceDescr:
    mov   [USB_t2], [USB_bCurrentDevice]  ; Use the UM temp var--Selector
    mov   A,>USB_DEVICE_DESCR_TABLE    ; Get the ROM Address MSB
    mov   X,<USB_DEVICE_DESCR_TABLE    ; Get the ROM Address LSB
    romx                               ; First entry is the table size (only a byte)
    cmp   A, [USB_t2]                  ; Range check
    jc    USB_Not_Supported

    mov   A,>USB_DEVICE_DESCR_TABLE    ; Get the ROM Address MSB

    jmp   USB_GetTableEntry
;-----------------------------------------------------------------------------
; String Descriptor Handler
;-----------------------------------------------------------------------------
IF	USB_bNumStringDescrs    ; Not needed if we don't have any String Descriptors
USB_SendStringDescr:
    mov   A, REG[USB_EP0DATA+wValueLo] ; Get the descrptor index
    mov   [USB_t2], A                  ; Use the UM temp var--Selector

    mov   A,>USB_StringTable           ; Get the ROM Address MSB
    mov   X,<USB_StringTable           ; Get the ROM Address LSB
    romx                               ; First entry is the table size (only a byte)
    cmp   A, [USB_t2]                  ; Range check
    jc    USB_Not_Supported

    mov   A,>USB_StringTable           ; Get the ROM Address MSB