📄 usb_1.asm
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;;*****************************************************************************
;;*****************************************************************************
;; FILENAME: USB_1.asm
;; Version: 1.5, Updated on 2006/06/19 at 11:43:56
;; Generated by PSoC Designer ver 4.3 b1884 : 23 June, 2006
;;
;; 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, 2005. All Rights Reserved.
;;*****************************************************************************
;;*****************************************************************************
include "m8c.inc"
include "USB_1_macros.inc"
include "USB_1.inc"
IF 0x2 & 0x10000000
PSOC_ERROR Please run the USB Setup Wizard. Device Editor, Right Click the USB User Module
; This message will only appear if the USB Setup Wizard has not be run and the descriptors
; and associated data structures have been created.
; After running the USB Setup Wizard, you must also select the Config/Generate Application
; menu item from PSoC Designer in order to generate USB User Module data structures and
; descriptors.
ENDIF
;-----------------------------------------------
; Global Symbols
;-----------------------------------------------
EXPORT USB_1_Start
EXPORT _USB_1_Start
;EXPORT USB_1_Stop
;EXPORT _USB_1_Stop
EXPORT USB_1_bCheckActivity
EXPORT _USB_1_bCheckActivity
EXPORT USB_1_bGetConfiguration
EXPORT _USB_1_bGetConfiguration
EXPORT USB_1_bGetEPState
EXPORT _USB_1_bGetEPState
;EXPORT USB_1_bGetEPCount
;EXPORT _USB_1_bGetEPCount
EXPORT USB_1_XLoadEP
EXPORT _USB_1_XLoadEP
;EXPORT USB_1_EnableOutEP
;EXPORT _USB_1_EnableOutEP
;EXPORT USB_1_DisableOutEP
;EXPORT _USB_1_DisableOutEP
;EXPORT USB_1_EnableEP
;EXPORT _USB_1_EnableEP
;EXPORT USB_1_DisableEP
;EXPORT _USB_1_DisableEP
EXPORT USB_1_Force
EXPORT _USB_1_Force
EXPORT USB_1_Suspend
EXPORT _USB_1_Suspend
EXPORT USB_1_Resume
EXPORT _USB_1_Resume
EXPORT USB_1_bRWUEnabled
EXPORT _USB_1_bRWUEnabled
AREA bss (RAM,REL)
;-----------------------------------------------
; Variable Allocation
;-----------------------------------------------
;----------------------------------------------------------------------------
EXPORT USB_1_APITemp
USB_1_APITemp: BLK 2 ; Two bytes of temporary
; storage shared by the API
; functions
EXPORT USB_1_APIEPNumber, _USB_1_APIEPNumber
_USB_1_APIEPNumber:
USB_1_APIEPNumber: BLK 1 ; API storage for speed
EXPORT USB_1_APICount, _USB_1_APICount
_USB_1_APICount:
USB_1_APICount: BLK 1 ; API storage for speed
EXPORT USB_1_bActivity
USB_1_bActivity: BLK 1 ; Activity flag (Shared between the ISR and API)
;-----------------------------------------------
; Constant Data Allocation
;-----------------------------------------------
AREA UserModules (ROM, REL)
EXPORT USB_1_USB_EP_BIT_LOOKUP
.LITERAL
USB_1_USB_EP_BIT_LOOKUP: ;
DB 01H ; EP0
DB 02H ; EP1
DB 04H ; EP2
.ENDLITERAL
AREA UserModules (ROM, REL)
;-----------------------------------------------------------------------------
; FUNCTION NAME: USB_1_Start
;
; DESCRIPTION: Starts the USB User Module
; Sets the device selection
; Set the configuration to unconfigured
; Enables the SIE for Address 0
; Enables the USB pullup (D- for low speed, D+ for full speed)
;
;-----------------------------------------------------------------------------
;
; ARGUMENTS: A is the desired device setting
;
; RETURNS:
;
; SIDE EFFECTS: REGISTERS ARE VOLATILE: THE A AND X REGISTERS MAY BE MODIFIED!
;
; THEORY of OPERATION or PROCEDURE:
;
;-----------------------------------------------------------------------------
.SECTION
USB_1_Start:
_USB_1_Start:
MOV REG[P10CR], 0x00 ; Disable the states
MOV REG[P11CR], 0x00 ;
MOV [USB_1_bCurrentDevice], A ; The app selects the desired device
MOV [USB_1_TransferType], USB_TRANS_STATE_IDLE ; Transaction Idle State
MOV [USB_1_Configuration], 0 ; Unconfigured
MOV [USB_1_DeviceStatus], 0 ; Clears device status
MOV [USB_1_EPDataToggle], 0 ; Clear all EP data toggles
MOV [_back_channel_buffer], 0 ; Initialize Set Report RAMs
MOV [set_output_report_flags], 0
MOV [USB_1_Protocol], 1 ; Set default as Report Protocol
MOV [USB_1_Protocol +1], 1 ; Set default as Report Protocol
; Flow here to enable the SIE
MOV REG[USB_1_ADDR], USB_ADDR_ENABLE ; Enable Address 0
OR REG[USB_1_USBXCR], USB_PULLUP_ENABLE ; Pullup D-
MOV REG[USB_1_EP0MODE], USB_MODE_STALL_IN_OUT ; ACK Setup/Stall IN/OUT
NOP
MOV A, REG[USB_1_EP0MODE] ; Read the mode register as a debug marker
M8C_EnableIntMask INT_MSK1, (INT_MSK1_USB_ACTIVITY | INT_MSK1_USB_BUS_RESET | INT_MSK1_USB_EP0)
RET
.ENDSECTION
IF 0
;-----------------------------------------------------------------------------
; FUNCTION NAME: USB_1_Stop
;
; DESCRIPTION:
;
;-----------------------------------------------------------------------------
;
; ARGUMENTS:
;
; RETURNS:
;
; SIDE EFFECTS: REGISTERS ARE VOLATILE: THE A AND X REGISTERS MAY BE MODIFIED!
;
; THEORY of OPERATION or PROCEDURE:
;
;-----------------------------------------------------------------------------
.SECTION
USB_1_Stop:
_USB_1_Stop:
MOV [USB_1_bCurrentDevice], 0 ; The app selects the desired device
MOV [USB_1_TransferType], USB_TRANS_STATE_IDLE ; Transaction Idle State
MOV [USB_1_Configuration], 0 ; Unconfigured
MOV [USB_1_DeviceStatus], 0 ; Clear the device status
MOV [USB_1_bActivity], 0 ; Clear the activity flag
MOV REG[USB_1_ADDR], 0 ; Clear the addfress and Address 0
AND REG[USB_1_USBXCR], ~USB_PULLUP_ENABLE ; Release D-
M8C_DisableIntMask INT_MSK1, (INT_MSK1_USB_ACTIVITY | INT_MSK1_USB_BUS_RESET | INT_MSK1_USB_EP0 | INT_MSK1_USB_EP1 | INT_MSK1_USB_EP2) ; Enable the interrupt
RET
.ENDSECTION
ENDIF
;-----------------------------------------------------------------------------
; FUNCTION NAME: USB_1_bCheckActivity
;
; DESCRIPTION:
;
;-----------------------------------------------------------------------------
;
; ARGUMENTS:
;
; RETURNS:
;
; SIDE EFFECTS: REGISTERS ARE VOLATILE: THE A AND X REGISTERS MAY BE MODIFIED!
;
; THEORY of OPERATION or PROCEDURE:
;
; The activity interrupt sets a RAM flag indicating activity and disables the
; interrupt. Disabling the interrupt keeps the bus activity from creating too
; many interrupts. bCheckActivity checks and clears the flag, the enables
; interrupts for the next interval.
;
;-----------------------------------------------------------------------------
.SECTION
USB_1_bCheckActivity:
_USB_1_bCheckActivity:
MOV A, [USB_1_bActivity] ; Activity?
CMP A, 1 ;
JZ .active ; Jump on Activity
; Flow here on no activity
RET
; Jump here if activity was detected
.active:
MOV [USB_1_bActivity], 0 ; Clear the activity flag for next time
M8C_EnableIntMask INT_MSK1, INT_MSK1_USB_ACTIVITY ; Enable the activity interupt
RET
.ENDSECTION
;-----------------------------------------------------------------------------
; FUNCTION NAME: USB_1_bGetConfiguration
;
; DESCRIPTION: Returns the current configuration number
;
;-----------------------------------------------------------------------------
;
; ARGUMENTS: None
;
; RETURNS: A contains the current configuration number
;
; SIDE EFFECTS: REGISTERS ARE VOLATILE: THE A AND X REGISTERS MAY BE MODIFIED!
;
; THEORY of OPERATION or PROCEDURE:
;
;-----------------------------------------------------------------------------
.SECTION
USB_1_bGetConfiguration:
_USB_1_bGetConfiguration:
MOV A,[USB_1_Configuration]
RET
.ENDSECTION
;-----------------------------------------------------------------------------
; FUNCTION NAME: USB_1_bGetEPState
;
; DESCRIPTION: Returns the current endpoint state
;
;-----------------------------------------------------------------------------
;
; ARGUMENTS: A: Endpoint Number
;
; RETURNS: A: NO_EVENT_ALLOWED
; EVENT_PENDING
; NO_EVENT_PENDING
;
; SIDE EFFECTS: REGISTERS ARE VOLATILE: THE A AND X REGISTERS MAY BE MODIFIED!
;
; THEORY of OPERATION or PROCEDURE:
;
;-----------------------------------------------------------------------------
.SECTION
USB_1_bGetEPState:
_USB_1_bGetEPState:
CMP A, (USB_MAX_EP_NUMBER + 1) ; Range check
JNC .invalid_ep ; Bail out
; Flow here to enable an endpoint
MOV X, A ; Endpoint number is the index
MOV A, [X+USB_1_EndpointAPIStatus]; Get the state
JMP .exit ; Go to the common exit
; Jump here for an invalid endpoint
.invalid_ep:
MOV A, 0 ; Return 0 for an invalid ep
; Jump or flow here for a common exit
.exit:
RET ; All done
.ENDSECTION
;-----------------------------------------------------------------------------
; FUNCTION NAME: USB_1_bRWUEnabled
;
; DESCRIPTION: Returns 1 if Remote Wake Up is enabled, otherwise 0
;
;-----------------------------------------------------------------------------
;
; ARGUMENTS: None
;
; RETURNS: A: 1--Remote Wake Up Enabled
; 0--Remote Wake Up Disabled
;
; SIDE EFFECTS: REGISTERS ARE VOLATILE: THE A AND X REGISTERS MAY BE MODIFIED!
;
; THEORY of OPERATION or PROCEDURE:
;
;-----------------------------------------------------------------------------
.SECTION
USB_1_bRWUEnabled:
_USB_1_bRWUEnabled:
TST [USB_1_DeviceStatus], USB_DEVICE_STATUS_REMOTE_WAKEUP
JNZ .enabled ; Jump if enabled
; Flow here if RWU is disabled
MOV A, 0 ; Return disabled
JMP .exit ; Go to the common exit
; Jump when RWU is enabled
.enabled:
MOV A, 1 ; Return enabled
; Jump or flow here for a common exit
.exit:
RET ; All done
.ENDSECTION
IF 0
;-----------------------------------------------------------------------------
; FUNCTION NAME: USB_1_bGetEPCount
;
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