?? usbcode.asm
字號(hào):
mov a,(get_protocol_status_table - control_read_table)
add a,[protocol_status]
jmp SendRomData
;+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
; SetReport()
;+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
SetReport:
mov a,[bmRequestType]
cmp a,CLASS + HOST_TO_INTERFACE
jnz SendStallEP0
mov a,[wValueLi]
mov [current_reportid],a
mov a,[wLengthLi]
mov [data_count],a
mov a,00h
iowr EP0_Rx_Status
mov a,[current_reportid]
cmp a,RID_TRANSMIT
jz hid_report_incoming
cmp a,RID_COMMAND
jnz await_outs
hid_report_incoming:
mov a,TRANSMITTING_MASK
mov [interrupt_mask],a
mov a,0
iowr P0_IntEnable
FLOW_OFF
mov a,FIRSTBYTE_FLG_MASK
or [fwcr], a
await_outs:
iord USB_Control
and a,~USBC_StatusOuts
or a,USBC_EnableOuts
iowr USB_Control
ret
;+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
; SetIdle()
;+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
SetIdle:
jmp SendStallEP0
;+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
; SetProtocol()
;+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
SetProtocol:
mov a,[bmRequestType]
cmp a,CLASS + HOST_TO_INTERFACE
jnz SendStallEP0
mov a,[wValueLi]
mov [protocol_status],a
jmp NoDataControl
;***********************************************************************************************
; USB傳輸函數(shù)的定義及實(shí)現(xiàn)
;***********************************************************************************************
;+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
; SendROMData()
;+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
SendRomData:
mov [data_start],a
call CheckDescriptorLength
call ControlRead
ret
;+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
; SendStallEP0()
;+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
SendStallEP0:
mov a,EP0_Tx_Respond + EP0_Tx_Stall
iowr EP0_Tx_Config
ret
;+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
; CheckDescriptorLength()
;+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
CheckDescriptorLength:
mov a,[wLengthHi]
cmp a,0
jnz UseActualLength
mov a,[wLengthLi]
cmp a,[data_count]
jz UseActualLength
jnc UseActualLength
mov [data_count],a
UseActualLength:
ret
;+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
; NoDataControl()
;+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
NoDataControl:
iord EP0_Rx_Status
and a, ~EP0_Rx_Setup
iowr EP0_Rx_Status
mov a,EP0_Tx_Respond + EP0_Tx_Toggle
iowr EP0_Tx_Config
ret
;+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
; ControlRead()
;+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
ControlRead:
mov A, 00h
mov [endp0_data_toggle], A
ControlReadDataStage:
push x
mov x,00h
mov a,00h
mov [loop_counter],a
iowr EP0_Rx_Status
iord EP0_Rx_Status
and a,01h
jnz ControlReadStatusStage
iord USB_Control
or a,USBC_StatusOuts
iowr USB_Control
mov a,[data_count]
cmp a,00h
jz DmaLoadDone
DmaLoadLoop:
mov a,[data_start]
index control_read_table
mov [x + EP0_FIFO],a
inc [data_start]
inc x
inc [loop_counter]
dec [data_count]
jz DmaLoadDone
mov a,[loop_counter]
cmp a,08h
jnz DmaLoadLoop
DmaLoadDone:
iord EP0_Rx_Status
and a,01h
jnz ControlReadStatusStage
mov a,[endp0_data_toggle]
xor a,EP0_Tx_Toggle
mov [endp0_data_toggle],a
or a,80h
or a,[loop_counter]
iowr EP0_Tx_Config
ControlReadStatusStage:
pop x
ret
;+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
; ControlWrite()
;+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
ControlWrite:
ControlWriteRamDataStage:
push x
mov a,[current_reportid]
cmp a,RID_COMMAND
jnz ridtransmit
mov a,[EP0_FIFO.1]
call handle_rid_command
jmp cwhandshake
ridtransmit:
iord EP0_Rx_Status
rrc
rrc
rrc
rrc
and a,0fh
sub a,02h
mov [loop_counter],a
mov x,00h
mov a,[fwcr]
and a,FIRSTBYTE_FLG_MASK
jz DmaWriteRamLoop
mov a,[fwcr]
and a,~FIRSTBYTE_FLG_MASK
or a,BUSY_TRANSMITTING
mov [fwcr],a
mov a,[x+EP0_FIFO]
cmp a,RID_TRANSMIT
jnz cwhandshake
dec [data_count]
dec [loop_counter]
inc x
mov a,[x+EP0_FIFO]
mov [transmit_count],a
dec [data_count]
dec [loop_counter]
inc x
mov a,INTDISABLE_MASK
iowr Global_Interrupt
DmaWriteRamLoop:
mov a,[transmit_count]
cmp a,0
jz DmaWriteRam_next
iowr WDT
mov a,[x + EP0_FIFO]
mov [serial_tx_reg],a
call SerialTransmitByte
dec [transmit_count]
DmaWriteRam_next:
inc x
dec [data_count]
dec [loop_counter]
jnz DmaWriteRamLoop
DmaWriteRamDone:
mov a,[data_count]
cmp a,00h
jnz cwenableouts
cwhandshake:
call NoDataControl
jmp cwexit
cwenableouts:
iord USB_Control
or a,USBC_EnableOuts
iowr USB_Control
cwexit:
pop X
ret
;*********************************************************************************************
; ROM數(shù)據(jù)段 Data Segment (ROM)
;*********************************************************************************************
XPAGEOFF
control_read_table:
;============================================================================================
device_desc_table:
db (end_device_desc_table - device_desc_table)
db 01h
db 10h,01h
db 00h
db 00h
db 00h
db 08h
DWL xxxxh ;xxxx-十六進(jìn)制數(shù)，需更改
DWL xxxxh ;xxxx-十六進(jìn)制數(shù)，需更改
DWL 0001h
db 01h
db 02h
db 00h
db 01h
end_device_desc_table:
;============================================================================================
config_desc_table:
db (Interface_Descriptor - config_desc_table)
db 02h
db (end_config_desc_table - config_desc_table) ,00h
db 01h
db 01h
db 00h
db 80h
db 32h
;============================================================================================
Interface_Descriptor:
db (Class_Descriptor - Interface_Descriptor)
db 04h
db 00h
db 00h
db 01h
db 03h
db 00h
db 00h
db 00h
;============================================================================================
Class_Descriptor:
db (Endpoint_Descriptor - Class_Descriptor)
db 21h
db 00h,01h
db 00h
db 01h
db 22h
dwl (end_hid_report_desc_table - hid_report_desc_table)
;============================================================================================
Endpoint_Descriptor:
db (end_config_desc_table - Endpoint_Descriptor)
db 05h
db 81h
db 03h
db EP1_REPORT_LENGTH+1,00h
db POLLING_INTERVAL
end_config_desc_table:
;============================================================================================
hid_report_desc_table:
db 06h, 00h, ffh
db 09h, 01h
db a1h, 01h
db 85h, RID_RECEIVE
db 9h, 1h
db 15h, 0h
db 26h, ffh, 0h
db 75h, 8h
db 95h, EP1_REPORT_LENGTH
db 81h, 6h
db 9h, 1h
db b1h, 6h
db 85h, RID_COMMAND
db 09h, 01h
db 15h, 00h
db 26h, 8h, 00h
db 75h, 08h
db 95h, 01h
db 09h, 01h
db b1h, 06h
db 85h, RID_TRANSMIT
db 09h, 03h
db 96h, 07h, 00h
db b1h, 06h
db c0h
end_hid_report_desc_table:
;========================================================================
USBStringLanguageDescription:
db (USBStringDescription1 - USBStringLanguageDescription)
db 03h
db 09h
db 04h
USBStringDescription1:
db (USBStringDescription2 - USBStringDescription1)
db 03h
dsu "Ysu"
; string 2
USBStringDescription2:
db (USBStringDescription3 - USBStringDescription2)
db 03h
dsu "RS232-USB"
; string 3
USBStringDescription3:
db (USBStringEnd - USBStringDescription3)
db 03h
dsu "Lyw"
USBStringEnd:
;========================================================================
get_dev_status_table:
db 00h, 00h
wakeup_enabled:
db 02h, 00h
get_interface_status_table:
db 00h, 00h
get_endpoint_status_table:
db 00h, 00h
stalled:
db 01h, 00h
get_configuration_status_table:
db 00h
db 01h
get_protocol_status_table:
db 00h
db 01h
get_interface_table:
db 00h
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