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https://github.com/thrust26/6502-QR-code-generator.git
synced 2024-12-27 04:29:36 +00:00
added capacity calculation
added a few comments to demo
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thrust26
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eefc158261
commit
8a1cec8a92
@ -4,7 +4,6 @@
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IF QR_VERSION = 1 ;{
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QR_SIZE = 21 ; 21x21 QR code
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QR_CAPACITY = 26
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IF QR_LEVEL = 0
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QR_DEGREE = 7 ; for version 1, level L QR codes
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ENDIF
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@ -21,7 +20,6 @@ QR_DEGREE = 17 ; for version 1, level H QR codes
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IF QR_VERSION = 2
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QR_SIZE = 25 ; 25x25 QR code
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QR_CAPACITY = 44
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IF QR_LEVEL = 0
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QR_DEGREE = 10 ; for version 2, level L QR codes
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ENDIF
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@ -38,7 +36,6 @@ QR_DEGREE = 28 ; for version 2, level H QR codes
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IF QR_VERSION = 3 ;{
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QR_SIZE = 29 ; 29x29 QR code
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QR_CAPACITY = 70
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IF QR_LEVEL = 0
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QR_DEGREE = 15 ; for version 3, level L QR codes
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ENDIF
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@ -52,6 +49,17 @@ QR_DEGREE = 26 ; for version 3, level M QR codes
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ENDIF
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ENDIF ;}
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; Calculate capacity based on version
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_QR_VAL SET (QR_VERSION * 16 + 128) * QR_VERSION + 64
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IF QR_VERSION >= 2
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_QR_NUM_ALIGN = QR_VERSION / 7 + 2
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_QR_VAL SET _QR_VAL - ((25 * _QR_NUM_ALIGN - 10) * _QR_NUM_ALIGN - 55)
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IF QR_VERSION >= 7
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_QR_VAL SET _QR_VAL - 36
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ENDIF
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ENDIF
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QR_CAPACITY = _QR_VAL / 8
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QR_MAX_DATA = QR_CAPACITY - QR_DEGREE
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QR_MODE = %0100 ; byte mode
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@ -423,25 +431,18 @@ QR_TOTAL = QR_MAX_DATA + QR_DEGREE ; 44
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;-----------------------------------------------------------
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MAC _DRAW_FORMAT
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;-----------------------------------------------------------
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IF QR_SINGLE_MASK = 0
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IF QR_SINGLE_MASK = 0
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.idx = tmpVars
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ldy #QR_FORMATS-1
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.loopFormat
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sty .idx
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cpy #8
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; IF QR_SINGLE_MASK
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; lda #%10101000
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; and BitMask,y
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; bcc .lowFormat
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; lda #%00100100
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; ELSE
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ldx qrPattern
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lda FormatLo,x
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and BitMask,y
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bcc .lowFormat
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lda FormatHi,x
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; ENDIF
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and BitMask-8,y
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.lowFormat
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beq .skipFormat
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@ -458,7 +459,7 @@ QR_TOTAL = QR_MAX_DATA + QR_DEGREE ; 44
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.skipFormat
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dey
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bpl .loopFormat
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ENDIF
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ENDIF
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ENDM
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; ********** The user macros start here: **********
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@ -656,7 +657,7 @@ FormatHi
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ENDIF
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ENDIF ; /QR_SINGLE_MASK = 0
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; position of the 15 type information bits
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; positions of the 15 type information bits
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FormatX1
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.byte 0, 1, 2, 3, 4, 5, 7, 8
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.byte 8, 8, 8, 8, 8, 8, 8
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@ -723,7 +724,7 @@ Generator ; data in reversed order!
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.byte $0d, $1c, $09, $fc
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ENDIF
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QR_DEGREE = . - Generator ; verify data
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QR_DEGREE = . - Generator ; verify data size
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ECHO "QR Code encoding data:", [. - QRCodeData]d, "bytes"
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_QR_TOTAL SET _QR_TOTAL + . - QRCodeData
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@ -34,15 +34,17 @@
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BASE_ADR = $f000
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NTSC = 1
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NTSC = 1 ; 0 = PAL50
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; QR Code Generator Switches
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QR_VERSION = 2 ; 1, 2 or 3 (TODO 1 and 3)
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QR_LEVEL = 1 ; 0 (L), 1 (M), 2 (Q) and 3 (H))
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QR_OVERLAP = 1 ; overlaps input and output data to save RAM (0 not tested!)
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QR_SINGLE_MASK = 0 ; (-255) if 1 uses only 1 of the 8 mask pattern
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QR_PADDING = 1 ; (+22) add padding bytes
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; Atari 2600 specific QR settings (set to 0 for other platforms)
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QR_OVERLAP = 1 ; overlaps input and output data to save RAM (defined for version 2 only!)
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QR_SINGLE_MASK = 0 ; (-255) if 1 uses only 1 of the 8 mask pattern
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IF QR_VERSION = 1 || QR_VERSION = 3
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ECHO ""
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ECHO "ERROR: Version", [QR_VERSION]d, "unsupported by demo code"
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@ -148,6 +150,7 @@ CODE_LST_SIZE = . - qrCodeLst
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;-----------------------------------------------------------
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MAC _BLACK_FUNC
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;-----------------------------------------------------------
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; blacks all function/alignment and timing pattern
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ldx #CODE_LST_SIZE-1
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.loopBlack
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lda BlackGfx,x
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@ -161,6 +164,7 @@ CODE_LST_SIZE = . - qrCodeLst
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;-----------------------------------------------------------
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MAC _BLACK_LEFT
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;-----------------------------------------------------------
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; blacks all function/alignment and timing pattern of the left column
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ldx #NUM_FIRST + QR_SIZE-1-8
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.loopBlackLeft
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lda LeftBlack+8,x
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@ -172,6 +176,7 @@ CODE_LST_SIZE = . - qrCodeLst
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;-----------------------------------------------------------
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MAC _BLACK_MIDDLE
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;-----------------------------------------------------------
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; blacks all function/alignment and timing pattern of the middle column
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ldx #QR_SIZE-1
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.loopBlackMiddle
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lda GRP1Black,x
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@ -183,6 +188,7 @@ CODE_LST_SIZE = . - qrCodeLst
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;-----------------------------------------------------------
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MAC _BLACK_RIGHT
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;-----------------------------------------------------------
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; blacks all function/alignment and timing pattern of the right column
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ldx #QR_SIZE
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.loopBlackRight
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lda GRP0RBlack-1,x
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@ -264,7 +270,7 @@ DrawScreen SUBROUTINE
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.enterLoop
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sta .tmpFirst ; 3 = 8
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.endFirst ; @70/69
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ldy #2 ; 2
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ldy #-2 ; 2
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.loopBlock
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sta WSYNC ; 3 @75/74
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;---------------------------------------
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@ -276,15 +282,15 @@ DrawScreen SUBROUTINE
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sta GRP1 ; 3
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lda grp0LLst,x ; 4
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sta GRP0 ; 3
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SLEEP 17-7 ;10
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SLEEP 10 ;10 = 24
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lda grp0RLst,x ; 4
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dey ; 2 = 30
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cpy #$01 ; 2
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bne .isff ; 2/3
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iny ; 2
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cpy #1 ; 2
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bcc .isZero ; 2/3
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BIT_B ; 1
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.isff
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.isZero
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dex ; 2
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sta GRP0 ; 3 = 10 @48
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sta GRP0 ; 3 = 16 @48
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bcs .loopBlock ; 2/3
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bpl .loopKernel ; 3/2=5/4
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sta WSYNC
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@ -572,7 +578,7 @@ _QR_TOTAL SET _QR_TOTAL + . - FunctionModulesData
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.byte " QR Code Generator Demo V0.3 - (C)2021 Thomas Jentzsch "
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; messages MUST not be longer than 26 bytes for version 2, level M!
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; messages MUST NOT be longer than 26 bytes for version 2, level M!
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; Galadriel:
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MessageTbl
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Message0
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@ -631,4 +637,5 @@ MessagePtrHi
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ECHO "----------------------------------------"
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ECHO "QR Code total:", [_QR_TOTAL]d, "bytes"
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ECHO ""
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ECHO "QR Code Version, Level (Degree): ", [QR_VERSION]d, ",", [QR_LEVEL]d, "(", [QR_DEGREE]d, ")"
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ECHO "QR Code Version", [QR_VERSION]d, ", Level (Degree)", [QR_LEVEL]d, "(", [QR_DEGREE]d, "), Capacity", [QR_CAPACITY]d, "bytes"
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ECHO " -> Message Space", [QR_CAPACITY-QR_DEGREE-2]d, "bytes"
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