📄 usb_std.asm
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;;*****************************************************************************
;;*****************************************************************************
;; FILENAME: USB_std.asm
;; Version: 1.5, Updated on 2006/06/19 at 11:43:56
;; Generated by PSoC Designer ver 4.4 b1884 : 14 Jan, 2007
;;
;; DESCRIPTION: USB Device User Module software implementation file
;; for the enCoRe II family of devices
;;
;; NOTE: User Module APIs conform to the fastcall 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
;; function returns. Even though these registers may be preserved now,
;; there is no guarantee they will be preserved in future releases.
;;-----------------------------------------------------------------------------
;; Copyright (c) Cypress Semiconductor 2004. 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: The USB_Not_Supported routine is invoked for any
; USB request that is not supported. It is invoked with a
; JMP/LJMP and does not return. It exits through the common
; EP0 exit.
;
;-----------------------------------------------------------------------------
;
; ARGUMENTS: None
;
; RETURNS: Does not return
;
; 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 A, 0 ; Count 0
MOV X, USB_MODE_STALL_IN_OUT ; Stall the request
LJMP USB_EP0_UPD_MODE_EXIT
;-----------------------------------------------------------------------------
; 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], 0 ; Use the UM Transfer Buffer
MOV [USB_TransferBuffer], [USB_DeviceStatus]
MOV A,>GetStatusTransferDescrTable ; Get the ROM Address MSB
MOV X,<GetStatusTransferDescrTable ; Get the ROM Address LSB
JMP USB_GetTableEntry_Local_Std
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
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
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_Local_Std
;-----------------------------------------------------------------------------
; 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_Local_Std
;-----------------------------------------------------------------------------
; 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
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