projects:electronics:7segdisplay

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projects:electronics:7segdisplay [2009/01/07 17:07] – photonicsguyprojects:electronics:7segdisplay [2014/11/13 14:28] – photonicsguy
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 ====== Constants ====== ====== Constants ======
- ; SAA1064 Constants +<file mpasm saa1065const.asm> 
- SAA1064ADDRESS EQU B'01110000' ; I2C Address +; SAA1064 Constants 
- SAA1064CONTROL EQU B'00000111' ; Control, bits 6:4 are for brightness +SAA1064ADDRESS EQU B'01110000' ; I2C Address 
- SAA1064SEGDASH EQU B'01000000' ; - +SAA1064CONTROL EQU B'00000111' ; Control, bits 6:4 are for brightness 
- SAA1064SEGDP EQU B'10000000' ; . +SAA1064SEGDASH EQU B'01000000' ; - 
- SAA1064SEGJ EQU B'00011110' ; J+SAA1064SEGDP EQU B'10000000' ; . 
 +SAA1064SEGJ EQU B'00011110' ; J 
 +</file>
  
 ====== PIC18 assembly code lookup table ====== ====== PIC18 assembly code lookup table ======
-<CODE>+<file mpasm saa1065lookup.asm>
 ;Lookup Table for 7-seg ;Lookup Table for 7-seg
 ;TODO Add test to make sure number is 0x0F or below ;TODO Add test to make sure number is 0x0F or below
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  MOVLW 0x10  MOVLW 0x10
  SUBWF Temp,A  SUBWF Temp,A
- + BTFSC STATUS,C 
-</CODE> + RETLW B'11000000' ; Return 0xC0 if over 0x0F - Light up DP and G segments 
- ;Lookup Table for 7-seg + BCF STATUS,C 
- ;TODO Add test to make sure number is 0x0F or below + RLCF Temp,w 
- ;DP is Bit 7 + ADDWF PCL,F 
- SEG_LOOKUP + RETLW B'00111111' ; 0 
- MOVWF Temp,A + RETLW B'00000110' ; 1 
- MOVLW 0x10 + RETLW B'01011011' ; 2 
- SUBWF Temp,A + RETLW B'01001111' ; 3 
- BTFSC STATUS,C + RETLW B'01100110' ; 4 
- RETLW B'11000000' ; Return 0xC0 if over 0x0F - Light up DP and G segments + RETLW B'01101101' ; 5 
- BCF STATUS,C + RETLW B'01111101' ; 6 
- RLCF Temp,w + RETLW B'00000111' ; 7 
- ADDWF PCL,F + RETLW B'01111111' ; 8 
- RETLW B'00111111' ; 0 + RETLW B'01100111' ; 9 
- RETLW B'00000110' ; 1 + RETLW B'01110111' ; A 
- RETLW B'01011011' ; 2 + RETLW B'01111100' ; B 
- RETLW B'01001111' ; 3 + RETLW B'01011000' ; C 
- RETLW B'01100110' ; 4 + RETLW B'01011110' ; D 
- RETLW B'01101101' ; 5 + RETLW B'01111001' ; E 
- RETLW B'01111101' ; 6 + RETLW B'01110001' ; F 
- RETLW B'00000111' ; 7 +;End of Lookup 
- RETLW B'01111111' ; 8 +</file>
- RETLW B'01100111' ; 9 +
- RETLW B'01110111' ; A +
- RETLW B'01111100' ; B +
- RETLW B'01011000' ; C +
- RETLW B'01011110' ; D +
- RETLW B'01111001' ; E +
- RETLW B'01110001' ; F +
- ;End of Lookup+
  
  • projects/electronics/7segdisplay.txt
  • Last modified: 2014/11/13 14:37
  • by photonicsguy