?? mouse45b.asm
字號:
GetConfigurationDescriptor:
mov A, (end_config_desc_table - config_desc_table)
mov [data_count], A ; save the descriptor length
mov A, (config_desc_table - control_read_table)
execute: ; send the descriptors
mov [data_start], A ; save start index
call get_descriptor_length ; correct the descriptor length
call control_read ; perform control read function
ret ; return
execute2: ; send the descriptors
mov [data_start], A ; save start index
call get_descriptor_length ; correct the descriptor length
call control_read2 ; perform control read function from
; the RAM
ret ; return
GetStringDescriptor:
mov A, [wValue]
cmp A, 0h
jz LanguageString
cmp A, 01h
jz ManufacturerString
cmp A, 02h
jz ProductString
cmp A, 03h
jz SerialNumString
cmp A, 04h
jz ConfigurationString
cmp A, 05h
jz InterfaceString
; No other strings supported
jmp SendStall ; *** not supported ***
LanguageString:
mov A, (USBStringDescription1 - USBStringLanguageDescription)
mov [data_count], A ; save the descriptor length
mov A, (USBStringLanguageDescription - control_read_table)
jmp execute ; send the string descriptor
ManufacturerString:
mov A, ( USBStringDescription2 - USBStringDescription1)
mov [data_count], A ; save the descriptor length
mov A, (USBStringDescription1 - control_read_table)
jmp execute ; send the string descriptor
ProductString:
mov A, ( USBStringDescription3 - USBStringDescription2)
mov [data_count], A ; save the descriptor length
mov A, (USBStringDescription2 - control_read_table)
jmp execute ; send the string descriptor
SerialNumString:
mov A, ( USBStringDescription4 - USBStringDescription3)
mov [data_count], A ; save the descriptor length
mov A, (USBStringDescription3 - control_read_table)
jmp execute ; send the string descriptor
ConfigurationString:
mov A, ( USBStringDescription5 - USBStringDescription4)
mov [data_count], A ; save the descriptor length
mov A, (USBStringDescription4 - control_read_table)
jmp execute
InterfaceString:
mov A, ( USBStringEnd - USBStringDescription5)
mov [data_count], A ; save the descriptor length
mov A, (USBStringDescription5 - control_read_table)
jmp execute
;------------------------------------------------------------------------
; HID class Get Descriptor routines
;
; Return the HID descriptor and enable endpoint one.
GetHIDDescriptor:
mov A, (Endpoint_Descriptor - Class_Descriptor)
mov [data_count], A ; save descriptor length
mov A, ( Class_Descriptor - control_read_table)
call execute ; send descriptor to host
ret ; return
;**********USB library main routines*******************
;******************************************************
; The host sometimes lies about the number of bytes it
; wants from a descriptor. Any request to get descriptor
; should return the lesser of the number of bytes requested
; or the actual length of the descriptor.
get_descriptor_length:
mov A, [wLengthHi] ; load requested transfer length
cmp A, 0 ; confirm high byte is zero
jnz use_actual_length ; no requests should be longer than 256b
mov A, [wLength] ; test low byte against zero
cmp A, 0
jz use_actual_length ; must request some data
cmp A, [data_count] ; compare to the amount of data
jnc use_actual_length
mov [data_count], A ; use requested length
use_actual_length:
ret ; return
;========================================================================
; function: no_data_control
; purpose: performs the no-data control operation
; as defined by the USB specifications
no_data_control:
mov A, C0h ; set up the transfer
iowr USB_EP0_TX_Config ; register for data1
; and 0 byte transfer
mov A, [interrupt_mask] ; enable interrupts
iowr Global_Interrupt
wait_nodata_sent:
iord USB_EP0_TX_Config ; wait for the data to be
and A, 80h ; transferred
jnz wait_nodata_sent
ret ; return to caller
;========================================================================
;******************************************************
;
; function: Control_read
; Purpose: Performs the control read operation
; as defined by the USB specification
; SETUP-IN-IN-IN...OUT
;
; data_start: must be set to the descriptors info
; as an offset from the beginning of the
; control read table
; data count holds the
; data_count: must be set to the size of the
; descriptor
;******************************************************
control_read:
push X ; save X on stack
mov A, 00h ; clear data 0/1 bit
mov [endp0_data_toggle], A
control_read_data_stage:
mov X, 00h
mov A, 00h
mov [loop_counter], A
iowr USB_EP0_RX_Status ; clear setup bit
; Fixing a bug seen by NEC hosts
iord USB_EP0_RX_Status ; check setup bit
and A, 01h ; if not cleared, another setup
jnz control_read_status_stage ; has arrived. Exit ISR
mov A, 08h ; set BADOUTS BIT
iowr USB_Status_Control
mov A, [data_count]
cmp A, 00h ; if the number of byte to transmit
jz dma_load_done ; is a multiple of 8 we have to transmit
; a zero-byte data packet
dma_load_loop: ; loop to load data into the data buffer
mov A, [data_start]
index control_read_table
mov [X + endpoint_0], A ; load dma buffer
inc [data_start]
inc X
inc [loop_counter]
dec [data_count] ; exit if descriptor
jz dma_load_done ; is done
mov A, [loop_counter] ; or 8 bytes sent
cmp A, 08h
jnz dma_load_loop
dma_load_done:
iord USB_EP0_RX_Status ; check setup bit
and A, 01h ; if not cleared, another setup
jnz control_read_status_stage ; has arrived. Exit ISR
mov A, [endp0_data_toggle]
xor A, 40h
mov [endp0_data_toggle], A
or A, 80h
or A, [loop_counter]
iowr USB_EP0_TX_Config
mov A, [interrupt_mask]
iowr Global_Interrupt
wait_control_read:
iord USB_EP0_TX_Config ; wait for the data to be
and A, 80h ; transfered
jz control_read_data_stage
iord USB_EP0_RX_Status
and A, 02h ; check if out was sent by host
jz wait_control_read
control_read_status_stage: ; OUT at end of data transfer
pop X ; restore X from stack
mov A, [interrupt_mask]
iowr Global_Interrupt
ret
;========================================================================
;******************************************************
;
; function: Control_read2
; Purpose: Performs the control read operation.
; Sends data from RAM
; SETUP-IN-IN-IN...OUT
;
; data_start: must be set to the beginning of the
; RAM buffer
;
; data_count: must be set to the size of the
; buffer
;******************************************************
control_read2:
push X ; save X on stack
mov A, 00h ; clear data 0/1 bit
mov [endp0_data_toggle], A
control_read_data_stage2:
mov X, 00h
mov A, 00h
mov [loop_counter], A
iowr USB_EP0_RX_Status ; clear setup bit
; Fixing a bug seen by NEC hosts
iord USB_EP0_RX_Status ; check setup bit
and A, 01h ; if not cleared, another setup
jnz control_read_status_stage2 ; has arrived. Exit ISR
mov A, 08h ; set BADOUTS BIT
iowr USB_Status_Control
mov A, [data_count]
cmp A, 00h ; if the number of byte to transmit
jz dma_load_done2 ; is a multiple of 8 we have to transmit
; a zero-byte data packet
dma_load_loop2: ; loop to load data into the data buffer
push X
mov X, [data_start]
mov A,[X+0]
pop X
mov [X + endpoint_0], A ; load dma buffer
inc [data_start]
inc X
inc [loop_counter]
dec [data_count] ; exit if descriptor
jz dma_load_done2 ; is done
mov A, [loop_counter] ; or 8 bytes sent
cmp A, 08h
jnz dma_load_loop2
dma_load_done2:
iord USB_EP0_RX_Status ; check setup bit
and A, 01h ; if not cleared, another setup
jnz control_read_status_stage2 ; has arrived. Exit ISR
mov A, [endp0_data_toggle]
xor A, 40h
mov [endp0_data_toggle], A
or A, 80h
or A, [loop_counter]
iowr USB_EP0_TX_Config
mov A, [interrupt_mask]
iowr Global_Interrupt
wait_control_read2:
iord USB_EP0_TX_Config ; wait for the data to be
and A, 80h ; transfered
jz control_read_data_stage2
iord USB_EP0_RX_Status
and A, 02h ; check if out was sent by host
jz wait_control_read2
control_read_status_stage2: ; OUT at end of data transfer
pop X ; restore X from stack
mov A, [interrupt_mask]
iowr Global_Interrupt
ret
;*********************************************************
; rom lookup tables
;*********************************************************
XPAGEOFF
control_read_table:
device_desc_table:
db 12h ; size of descriptor (18 bytes)
db 01h ; descriptor type (device descriptor)
db 00h, 01h ; USB spec release (ver 1.0)
db 00h ; class code (each interface specifies class information)
db 00h ; device sub-class (must be set to 0 because class code is 0)
db 00h ; device protocol (no class specific protocol)
db 08h ; maximum packet size (8 bytes)
db B4h, 04h ; vendor ID (note Cypress vendor ID)
db 01h, 00h ; product ID (Cypress USB mouse product ID)
db 00h, 00h ; device release number
db 01h ; index of manufacturer string
db 02h ; index of product string
db 00h ; index of serial number (0=none)
db 01h ; number of configurations (1)
config_desc_table:
db 09h ; length of descriptor (9 bytes)
db 02h ; descriptor type (CONFIGURATION)
db 22h, 00h ; total length of descriptor (34 bytes)
db 01h ; number of interfaces to configure (1)
db 01h ; configuration value (1)
db 04h ; configuration string index
db A0h ; configuration attributes (bus powered)
db 32h ; maximum power (100mA)
Interface_Descriptor:
db 09h ; length of descriptor (9 bytes)
db 04h ; descriptor type (INTERFACE)
db 00h ; interface number (0)
db 00h ; alternate setting (0)
db 01h ; number of endpoints (1)
db 03h ; interface class (3..defined by USB spec)
db 01h ; interface sub-class (1..defined by USB spec)
db 02h ; interface protocol (2..defined by USB spec)
db 05h ; interface string index
Class_Descriptor:
db 09h ; descriptor size (9 bytes)
db 21h ; descriptor type (HID)
db 00h,01h ; HID class release number (1.00)
db 00h ; Localized country code (none)
db 01h ; # of HID class descriptor to follow (1)
db 22h ; Report descriptor type (HID)
db (end_hid_report_desc_table - hid_report_desc_table)
db 00h
Endpoint_Descriptor:
db 07h ; descriptor length (7 bytes)
db 05h ; descriptor type (ENDPOINT)
db 81h ; endpoint address (IN endpoint, endpoint 1)
db 03h ; endpoint attributes (interrupt)
db 03h, 00h ; maximum packet size (3 bytes)
db 0Ah ; polling interval (10ms)
end_config_desc_table:
hid_report_desc_table:
db 05h, 01h ; usage page (generic desktop)
db 09h, 02h?? 快捷鍵說明
復制代碼
Ctrl + C
搜索代碼
Ctrl + F
全屏模式
F11
切換主題
Ctrl + Shift + D
顯示快捷鍵
?
增大字號
Ctrl + =
減小字號
Ctrl + -