📄 shutter_ctrol.asm
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;-------------------------------------------------------------------------------
; Copyright 2002/06/27-2005/06/27 Shanghai Goldway ITS Co. Ltd *
; All right reserved. *
;-------------------------------------------------------------------------------
;-------------------------------------------------------------------------------
;*
;* Project : Camera Shutter Control
;* Module : Camera Shutter Control
;* File name : PR9325.asm
;* Author(s) : Wei Penghui
;* Creation Date: 2003/02/20
;* PS : indent = 4 spaces, NO tab's allowed!
;* Description : 牌照识别器摄像头控制程序,Control the shutter speed
;*
;-------------------------------------------------------------------------------
; CPU Frequency : 7.09375MHz
; RS232 Set : 8 Bits, No Parity, 1 Stops, 9600
;
; Function： 1、摄像头快门速度控制。
; 2、闪光灯控制。
; 性能参数： 1、摄像头快门速度：1us － 20ms
; 2、闪光灯位置：可设置在一场的任意时刻。
; 3、快门可工作在自动方式。
; Data type prefix
; b bit
; uch unsigned byte
; ch signed byte
; w word(2 bytes)
; dw double word(4 bytes)
; a array
;
;-------------------------------------------------------------------------------
;*
;* Modification history
;*
;* Date Revision By Comment
;* 2004/07/19 0x1 Song Zhenyu can write to flash
;* 2004/08/05 0x2 Song Zhenyu Add heaader
;-------------------------------------------------------------------------------
$INCLUDE(MOD932)
$TITLE(Camera Shutter Control)
$DATE(18/6/2003)
$DEBUG
$OBJECT
$NOPAGING
;-------------------------------------------------------------------------------
; Signal define.
bXV2 BIT P2.3 ; Horizontal transfer pulse(Positive pulse)
_bXV3 BIT P1.4 ; Horizontal transfer pulse(Negative pulse)
_bXSG1 BIT P1.3 ; CCD readout pulse(Negative pulse)
_bXSubIn BIT P0.7 ; Auto discharge pulse.
_bXSubInB BIT P0.4 ; Alternative "nXSub_In"
_bXSubOut BIT P0.6 ; Discharge pulse(Negative pulse)
bFlashA BIT P2.0 ; Photoflash A control pin
bFlashB BIT P2.1 ; Photoflash B control pin
_bRxd BIT P1.1 ; UART Receive port
bAuto_En BIT P0.0 ; the AutoG mode control
;ISP Code entry
Isp_Entry CODE 01E00H
Pgm_Mtp CODE 0FF00H
;-------------------------------------------------------------------------------
; Data Segment. (All datas are in little endian)
DSEG AT 30H
uchSysCtl: DS 1
wNsSpd: DS 2
uchNsSpdExt: DS 1
wFsSpd: DS 2
uchFsSpdExt: DS 1
uchFlashAPos: DS 1
uchFlashBPos: DS 1
uchPreFlashA: DS 1
uchPreFlashB: DS 1
uchPreFlash: DS 1
uchFieldCnt: DS 1
wRowCnt: DS 2
uchRowCntExt: DS 1
uchFlashCnt: DS 1
uchSumCheck: DS 1
aUartRcvBuf: DS 10
BSEG AT 00H
bUARTRcvValid: DBIT 1
bFlashAEnable: DBIT 1
bFlashBEnable: DBIT 1
bSampleA: DBIT 1
bSampleB: DBIT 1
bSampleC: DBIT 1
bIsCapture: DBIT 1
bClrDogEnable: DBIT 1
bAutoCtlEnable: DBIT 1
;-------------------------------------------------------------------------------
; Code Segment.
CSEG ;Set code segment acive.
ORG 0000H
RESET: LJMP MAIN ; Main program entry point.
LJMP Isr_Ex0 ; 0003H (External interrupt 0)
NOP
NOP
LJMP ERR ; Software trap.
LJMP ERR ; 000BH (Timer 0 interrupt)
NOP
NOP
LJMP ERR ; Software trap.
LJMP Isr_Ex1 ; 0013H (External Interrupt 1)
NOP
NOP
LJMP ERR ; Software trap.
LJMP ERR ; 001BH (Timer 1 Interrupt)
NOP
NOP
LJMP ERR ; Software trap.
LJMP ERR ; 0023H (RS232 RI or RI&TI Interrupt)
NOP
NOP
LJMP ERR ; Software trap
LJMP ERR ; 002BH (Brownout Detect Interrupt)
NOP ; (Used only in P89LPC932)
NOP
LJMP ERR
LJMP ERR ; 0033H (I2C Interrupt)
NOP
NOP
LJMP ERR
LJMP ERR ; 003BH (KBI Interrupt)
NOP
NOP
LJMP ERR
LJMP ERR ; 0043H (Cmp1/2 Interrupt)
NOP
NOP
LJMP ERR
LJMP ERR ; 004BH (SPI Interrupt)
NOP
NOP
LJMP ERR
LJMP ERR ; 0053H (Watchdog or RTC Interrupt)
NOP
NOP
LJMP ERR
LJMP ERR ; 005BH (CCU Interrupt)
NOP
NOP
LJMP ERR
LJMP ERR ; 0063H (Reserved)
NOP
NOP
LJMP ERR
LJMP ERR ; 006BH (RS232 TI)
NOP
NOP
LJMP ERR
LJMP ERR ; 0073H (EEPROM Write Completed Interrupt)
ERR: LJMP RESET ; Software trap.
MAIN: MOV SP, #7FH
LCALL Init_UART
LCALL Init_Interrupt
LCALL Init_Port
LCALL Init_DSEG
CLR TI
MOV SBUF, #0A5H
JNB TI, $
CLR TI
MOV SBUF, #05AH
JNB TI, $
CLR TI
MOV PCONA, #0EDH
SETB EX0
SETB EA
LCALL Init_WD
LCALL WaitForCapture
; Receive command from the host
M_L01: LCALL ReceiveOneByte
CJNE A, #055H, M_L01
LCALL ReceiveOneByte
CJNE A, #0AAH, M_L01
LCALL ReceiveOneByte
MOV uchSumCheck, A
MOV aUartRcvBuf, A
ANL A, #0F0H
JNZ M_L01
MOV DPTR, #M_TBL0
MOV A, aUartRcvBuf
RL A
JMP @A+DPTR
M_TBL0: AJMP M_Cmd_0
AJMP M_Cmd_1
AJMP M_Cmd_2
AJMP M_Cmd_3
AJMP M_Cmd_4
AJMP M_Cmd_5
AJMP M_Cmd_6
AJMP M_Cmd_7
AJMP M_Cmd_8
AJMP M_Cmd_9
AJMP M_Cmd_A
AJMP M_Cmd_B
AJMP M_Cmd_C
AJMP M_Cmd_D
AJMP M_Cmd_E
AJMP M_Cmd_F
M_Cmd_0: AJMP M_L01
; EX0_Cmd_1 (Change the fast shutter speed)
M_Cmd_1: LCALL ReceiveOneByte
XRL uchSumCheck, A
MOV aUartRcvBuf+1, A
LCALL ReceiveOneByte
XRL uchSumCheck, A
MOV aUartRcvBuf+2, A
LCALL ReceiveOneByte
XRL uchSumCheck, A
MOV aUartRcvBuf+3, A
LCALL ReceiveOneByte
XRL uchSumCheck, A
MOV aUartRcvBuf+4, A
LCALL ReceiveOneByte
MOV aUartRcvBuf+5, A
LCALL ReceiveOneByte
; CJNE A, uchSumCheck, MC1_L05
SETB bUARTRcvValid
MC1_L05: AJMP M_L01
; EX0_Cmd_2 (Change the nature shutter speed)
M_Cmd_2: LCALL ReceiveOneByte
XRL uchSumCheck, A
MOV aUartRcvBuf+1, A
LCALL ReceiveOneByte
XRL uchSumCheck, A
MOV aUartRcvBuf+2, A
LCALL ReceiveOneByte
XRL uchSumCheck, A
MOV aUartRcvBuf+3, A
LCALL ReceiveOneByte
XRL uchSumCheck, A
MOV aUartRcvBuf+4, A
LCALL ReceiveOneByte
MOV aUartRcvBuf+5, A
LCALL ReceiveOneByte
; CJNE A, uchSumCheck, MC2_L05
SETB bUARTRcvValid
MC2_L05: AJMP M_L01
; Ex0_Cmd_3 (Triger command)
M_Cmd_3: LCALL ReceiveOneByte
ANL A, #003H
XRL uchSumCheck, A
MOV aUartRcvBuf+1, A
LCALL ReceiveOneByte
; CJNE A, uchSumCheck, MC3_L05
SETB bUARTRcvValid
MC3_L05: AJMP M_L01
M_Cmd_4: LCALL ReceiveOneByte
CJNE A, #05AH, MC5_L05
LCALL ReceiveOneByte
CJNE A, #0A5H, MC5_L05
LCALL Disable_WD
LCALL Soft_Reset
MC5_L05: AJMP M_L01
M_Cmd_5: LCALL Enable_WD
LCALL Soft_Reset
AJMP M_L01
M_Cmd_6: MOV SSTAT, #000H
MOV AUXR1, #0C0H
AJMP M_L01
M_Cmd_7: MOV SSTAT, #000H
MOV AUXR1, #080H
AJMP M_L01
M_Cmd_8: LCALL WaitForCapture
AJMP M_L01
M_Cmd_9: AJMP M_L01
M_Cmd_A: LCALL Soft_Reset
M_Cmd_B: LCALL ReceiveOneByte
MOV R5, A
LCALL ReceiveOneByte
MOV R7, A
MOV A, #02H
LCALL Pgm_Mtp
AJMP M_L01
M_Cmd_C: SETB bAuto_En
AJMP M_L01
CLR bUARTRcvValid
M_Cmd_D: CLR bAuto_En
CLR bUARTRcvValid
AJMP M_L01
M_Cmd_E: ;CLR EX1
SETB bAutoCtlEnable
CLR bUARTRcvValid
AJMP M_L01
M_Cmd_F: ;CLR EX1
CLR bAutoCtlEnable
CLR bUARTRcvValid
AJMP M_L01
;Vertical(_bXSG1) interrupt. Priority Level 1
Isr_Ex0: JNB _bXSG1,EX0_M00
RETI
EX0_M00: JNB _bXSG1,EX0_M01
RETI
EX0_M01: CLR EX1
PUSH ACC
PUSH PSW
JB bXV2, $
JB _bXV3, EX0_L01
JNB _bXV3, $
AJMP EX0_L05
EX0_L01: JB _bXV3, $
JNB _bXV3, $
EX0_L05: JB _bXV3, $
JNB _bXV3, $
JNB bClrDogEnable, EX0_L06
MOV WFEED1, #0A5H
MOV WFEED2, #05AH
CLR bClrDogEnable
EX0_L06: JB _bXV3, $
JNB _bXV3, $
JNB bUARTRcvValid, EX0_L10
MOV DPTR, #EX0_TBL0
MOV A, aUartRcvBuf+0
ANL A, #003H
RL A
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