?? lcd_isr.a30
字號:
; /*********************************************************************
; * SEGGER MICROCONTROLLER SYSTEME GmbH *
; * Solutions for real time microcontroller applications *
; **********************************************************************
; * *
; * (C) 1996 SEGGER Microcontroller Systeme GmbH *
; * *
; * Internet: www.segger.com Support: support@segger.com *
; * *
; **********************************************************************
;
; **** emWin/GSC Grafical user interface for embedded applications ****
; emWin is protected by international copyright laws. Knowledge of the
; source code may not be used to write a similar product. This file may
; only be used in accordance with a license and should not be re-
; distributed in any way. We appreciate your understanding and fairness.
; ----------------------------------------------------------------------
; File : LCD_ISR.s34
; Purpose : Interrupt service routine for 1/4/8-bit LCDs
; ----------------------------------------------------------------------
; Version-Date---Author-Explanation
; ----------------------------------------------------------------------
; 1.00.02 020821 JE a) Changed to work with configurable ports
; 1.00.00 010417 JE a) First release
; ----------------------------------------------------------------------
; Known problems or limitations with current version:
; None.
; ----------------------------------------------------------------------
; Items for future improvement:
; ---------------------------END-OF-HEADER------------------------------
;
.include LCD_ISR.inc
; *********************************************************
; *
; * Externals
; *
; *********************************************************
.glb _ISRTimerA1
.glb _LCD_X_Off
.glb _LCD_X_On
.glb _LCD__apVRam
.glb _LCD__aTimerReload
.glb _LCD__BitsPerPixel
.FB 0
; *********************************************************
; *
; * Data
; *
; *********************************************************
.section data_SE,DATA
Line:
.BLKB 2
FrameCnt:
.BLKB 1
GrayCnt:
.BLKB 1
IntCnt:
.BLKB 1
MCnt:
.BLKB 1
.BLKB 1
pData:
.BLKB 4
; *********************************************************
; *
; * Defines for special function registers
; *
; *********************************************************
TA1IC .equ 56h
TA1 .equ 388h
TA1MR .equ 397h
TA2 .equ 38ah
TA2MR .equ 398h
TABSR .equ 380h
;P0 .equ 3e0h
;P7 .equ 3edh
;P8 .equ 3f0h
;P7D .equ 1007
;P8D .equ 1010
DM0SL .equ 3b8h
DM0CON .equ 2ch
SAR0 .equ 20h
DAR0 .equ 24h
TCR0 .equ 28h
; *********************************************************
; *
; * Config defaults
; *
; *********************************************************
;PORT_DATA .equ P7
;PORT_CTRL .equ P8
MASK_M .equ (1<<0)
MASK_FLM .equ (1<<1)
MASK_CL1 .equ (1<<2)
MASK_DON .equ (1<<3)
MASK_CL2 .equ (1<<4)
; *********************************************************
; *
; * Data transfer macros (used in ISR)
; *
; *********************************************************
.if LCD_USEDMA
WRITEDATA2LCD .MACRO Off
.ENDM
.elif LCD_INTERFACEBITS == 8
WRITEDATA2LCD .MACRO Off
MOV.W Off[FB], R0
; 1. byte
MOV.B R1H, [A1]
MOV.B R0L, [A0]
MOV.B R1L, [A1]
; 2.byte
MOV.B R1H, [A1]
MOV.B R0H, [A0]
MOV.B R1L, [A1]
.ENDM
.elif LCD_INTERFACEBITS == 4
WRITEDATA2LCD .MACRO Off
MOV.W Off[FB], R0
; 1. nibble
MOV.B R1H, [A1]
MOVHL R0L, [A0]
MOV.B R1L, [A1]
; 2. nibble
MOV.B R1H, [A1]
MOV.B R0L, [A0]
MOV.B R1L, [A1]
; 3. nibble
MOV.B R0H, R0L
SHL.B #-4,R0L
MOV.B R1H, [A1]
MOV.B R0L, [A0]
MOV.B R1L, [A1]
; 4. nibble
MOV.B R1H, [A1]
MOV.B R0H, [A0]
MOV.B R1L, [A1]
.ENDM
.elif LCD_INTERFACEBITS == 1
WRITEDATA2LCD .MACRO Off
MOV.B Off[A0], R0L
MOV.B R1H, [A1]
ROT.B #1,R0L
MOV.B R0L, LCD_PORT_DATA
MOV.B R1L, [A1]
MOV.B R1H, [A1]
ROT.B #1,R0L
MOV.B R0L, LCD_PORT_DATA
MOV.B R1L, [A1]
MOV.B R1H, [A1]
ROT.B #1,R0L
MOV.B R0L, LCD_PORT_DATA
MOV.B R1L, [A1]
MOV.B R1H, [A1]
ROT.B #1,R0L
MOV.B R0L, LCD_PORT_DATA
MOV.B R1L, [A1]
MOV.B R1H, [A1]
ROT.B #1,R0L
MOV.B R0L, LCD_PORT_DATA
MOV.B R1L, [A1]
MOV.B R1H, [A1]
ROT.B #1,R0L
MOV.B R0L, LCD_PORT_DATA
MOV.B R1L, [A1]
MOV.B R1H, [A1]
ROT.B #1,R0L
MOV.B R0L, LCD_PORT_DATA
MOV.B R1L, [A1]
MOV.B R1H, [A1]
ROT.B #1,R0L
MOV.B R0L, LCD_PORT_DATA
MOV.B R1L, [A1]
.ENDM
.endif
; *********************************************************
; *
; * ISR
; *
; *********************************************************
.section program
_ISRTimerA1:
FSET B
pushm FB ; not needed with IAR
; *** Output next line / first line signals
MOV.W #LCD_PORT_CTRL, A1
CMP.W #LCD_YSIZE,Line
JNE ISR_NextLine
INC.B FrameCnt
OR.B #MASK_FLM, [A1]
OR.B #MASK_CL1, [A1]
AND.B #~MASK_CL1,[A1]
AND.B #~MASK_FLM,[A1]
JMP.B NLDone
ISR_NextLine:
OR.B #MASK_CL1, [A1]
AND.B #~MASK_CL1, [A1]
NLDone:
; *** Check if M has to be inverted
DEC.B MCnt
JNE M_Done
MOV.B #7,MCnt
XOR.B #MASK_M, [A1]
M_Done:
;
; Start processing the new line
;
; *** Last line ? if (--Line<0) {
ADD.W #-1,Line
JPZ ManageDone
MOV.W #LCD_YSIZE,Line
; *** Handle GrayCnt
MOV.B GrayCnt, R0L
DEC.B R0L
MOV.B R0L, GrayCnt
JPZ GrayCntDone
LDE.B _LCD__BitsPerPixel, R0L
DEC.B R0L
MOV.B R0L, GrayCnt
GrayCntDone:
ADD.B R0L, R0L ; *2 for U16 array
MOV.B R0L, A0
LDE.W _LCD__aTimerReload[A0], A1
MOV.W A1,TA1
ADD.B R0L, R0L ; *4 for far pointer array
MOV.B R0L, A0
LDE.W _LCD__apVRam[A0], A1
STE.W A1, pData
LDE.W 2+_LCD__apVRam[A0], A1
STE.W A1, pData+2
ManageDone:
.if LCD_USEDMA
; *** Program DMA Destination: 8-bit latch
MOV.W pData, SAR0
MOV.B pData+2, SAR0+2
MOV.B #19h, DM0CON ; 8 bits, source increments
MOV.W #LCD_BYTESPERLINE, TCR0
.else
MOV.W #LCD_PORT_CTRL, A1
MOV.W #LCD_PORT_DATA, A0
MOV.B [A1], R1L
MOV.B R1L, R1H
OR.B #MASK_CL2, R1H
AND.B #255-MASK_CL2, R1L
LDC pData, FB
.endif
WRITEDATA2LCD 0
.if LCD_BYTESPERLINE > 2
WRITEDATA2LCD 2
.endif
.if LCD_BYTESPERLINE > 4
WRITEDATA2LCD 4
.endif
.if LCD_BYTESPERLINE > 6
WRITEDATA2LCD 6
.endif
.if LCD_BYTESPERLINE > 8
WRITEDATA2LCD 8
.endif
.if LCD_BYTESPERLINE > 10
WRITEDATA2LCD 10
.endif
.if LCD_BYTESPERLINE > 12
WRITEDATA2LCD 12
.endif
.if LCD_BYTESPERLINE > 14
WRITEDATA2LCD 14
.endif
.if LCD_BYTESPERLINE > 16
WRITEDATA2LCD 16
.endif
.if LCD_BYTESPERLINE > 18
WRITEDATA2LCD 18
.endif
.if LCD_BYTESPERLINE > 20
WRITEDATA2LCD 20
.endif
.if LCD_BYTESPERLINE > 22
WRITEDATA2LCD 22
.endif
.if LCD_BYTESPERLINE > 24
WRITEDATA2LCD 24
.endif
.if LCD_BYTESPERLINE > 26
WRITEDATA2LCD 26
.endif
.if LCD_BYTESPERLINE > 28
WRITEDATA2LCD 28
.endif
.if LCD_BYTESPERLINE > 30
WRITEDATA2LCD 30
.endif
.if LCD_BYTESPERLINE > 32
WRITEDATA2LCD 32
.endif
.if LCD_BYTESPERLINE > 34
WRITEDATA2LCD 34
.endif
.if LCD_BYTESPERLINE > 36
WRITEDATA2LCD 36
.endif
.if LCD_BYTESPERLINE > 38
WRITEDATA2LCD 38
.endif
.if LCD_BYTESPERLINE > 40
WRITEDATA2LCD 40
.endif
.if LCD_BYTESPERLINE > 42
WRITEDATA2LCD 42
.endif
.if LCD_BYTESPERLINE > 44
WRITEDATA2LCD 44
.endif
.if LCD_BYTESPERLINE > 46
WRITEDATA2LCD 46
.endif
.if LCD_BYTESPERLINE > 48
WRITEDATA2LCD 48
.endif
.if LCD_BYTESPERLINE > 50
WRITEDATA2LCD 50
.endif
.if LCD_BYTESPERLINE > 52
WRITEDATA2LCD 52
.endif
.if LCD_BYTESPERLINE > 54
WRITEDATA2LCD 54
.endif
.if LCD_BYTESPERLINE > 56
WRITEDATA2LCD 56
.endif
.if LCD_BYTESPERLINE > 58
WRITEDATA2LCD 58
.endif
.if LCD_BYTESPERLINE > 60
WRITEDATA2LCD 60
.endif
.if LCD_BYTESPERLINE > 62
WRITEDATA2LCD 62
.endif
.if LCD_BYTESPERLINE > 64
WRITEDATA2LCD 64
.endif
.if LCD_BYTESPERLINE > 66
WRITEDATA2LCD 66
.endif
.if LCD_BYTESPERLINE > 68
WRITEDATA2LCD 68
.endif
.if LCD_BYTESPERLINE > 70
WRITEDATA2LCD 70
.endif
.if LCD_BYTESPERLINE > 72
WRITEDATA2LCD 72
.endif
.if LCD_BYTESPERLINE > 74
WRITEDATA2LCD 74
.endif
.if LCD_BYTESPERLINE > 76
WRITEDATA2LCD 76
.endif
.if LCD_BYTESPERLINE > 78
WRITEDATA2LCD 78
.endif
.if LCD_BYTESPERLINE > 80
WRITEDATA2LCD 80
.endif
.if LCD_BYTESPERLINE > 82
WRITEDATA2LCD 82
.endif
.if LCD_BYTESPERLINE > 84
WRITEDATA2LCD 84
.endif
.if LCD_BYTESPERLINE > 86
WRITEDATA2LCD 86
.endif
.if LCD_BYTESPERLINE > 88
WRITEDATA2LCD 88
.endif
.if LCD_BYTESPERLINE > 90
WRITEDATA2LCD 90
.endif
.if LCD_BYTESPERLINE > 92
WRITEDATA2LCD 92
.endif
.if LCD_BYTESPERLINE > 94
WRITEDATA2LCD 94
.endif
.if LCD_BYTESPERLINE > 96
WRITEDATA2LCD 96
.endif
.if LCD_BYTESPERLINE > 98
WRITEDATA2LCD 98
.endif
.if LCD_BYTESPERLINE > 100
WRITEDATA2LCD 100
.endif
.if LCD_BYTESPERLINE > 102
WRITEDATA2LCD 102
.endif
.if LCD_BYTESPERLINE > 104
WRITEDATA2LCD 104
.endif
.if LCD_BYTESPERLINE > 106
WRITEDATA2LCD 106
.endif
.if LCD_BYTESPERLINE > 108
WRITEDATA2LCD 108
.endif
.if LCD_BYTESPERLINE > 110
WRITEDATA2LCD 110
.endif
.if LCD_BYTESPERLINE > 112
WRITEDATA2LCD 112
.endif
.if LCD_BYTESPERLINE > 114
WRITEDATA2LCD 114
.endif
.if LCD_BYTESPERLINE > 116
WRITEDATA2LCD 116
.endif
.if LCD_BYTESPERLINE > 118
WRITEDATA2LCD 118
.endif
ADD.W #LCD_BYTESPERLINE,pData
POPM FB ; this instruction is not needed with IAR since FB is not used
REIT
; *********************************************************
; *
; * LCD_On
; *
; *********************************************************
_LCD_X_On:
PUSHM R0
; MOV.B #0ffh, P7D
; MOV.B #0ffh, P8D
LDE.W _LCD__apVRam,R0
STE.W R0,pData
LDE.W 2+_LCD__apVRam,R0
STE.W R0,pData+2
LDE.W _LCD__aTimerReload, R0 ;
; *** Line refresh: TA1
MOV.W R0,TA1
MOV.B #0,TA1MR ; Timer mode register
MOV.B #7,TA1IC ; Timer interrupt register, high prio
.if LCD_USEDMA
; *** Program DMA Destination: 8-bit latch
MOV.W #(LCD_DMADEST & 0ffffh), DAR0
MOV.B #((LCD_DMADEST >> 016) & 0ffh), DAR0+2
MOV.B #4, DM0SL ; USE Timer A2 as trigger
MOV.B #19h, DM0CON ; 8 bits, source increments
; *** Shift timer: TA2
MOV.W #8,TA2
MOV.B #0,TA2MR ; Timer mode register
or.B #(1<<2),TABSR
.endif
OR.B #(1<<1),TABSR
OR.B #(1<<3),LCD_PORT_CTRL
POPM R0
RTS
; *********************************************************
; *
; * LCD_Off
; *
; *********************************************************
_LCD_X_Off:
AND.B #253, TABSR ; Start timer : TABSR &= ~(1<<1)
AND.B #~(1<<3),LCD_PORT_CTRL
RTS
.end
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