Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Register Log in

is there anyone assembler here???need help regarding max7219 coding...

Status
Not open for further replies.
have you tested your code in proteus bro??? it works there?? becoz none of any code worked in proteus too...
connection i made are simle as i have shown above in the pic of proteus..
din->rc2
load->rc4
clk->rc5
 

peter002 said:
have you tested your code in proteus bro??? it works there?? becoz none of any code worked in proteus too...
Click to expand...
I do not have access to the Proteus simulation tools.

Do you have any code of any kind that runs correctly in your Proteus simulator that shows that the MAX7219 chip simulation works?

peter002 said:
connection i made are as i have shown above in the pic of proteus..
din->rc2
load->rc4
clk->rc5
Click to expand...
Just saying that you connected your circuit the same is not proof that your prototype is built correctly.

What tests have you performed to validate your prototype?
 

After building a prototype using a Mikroelektronika 8x8Rclick I discovered some bugs with the code I had posted.

This code correct the issues I found:
Code: 
;
;                            PIC16F877A
;                    +-----------:_:-----------+
;         ICD_VPP -> :  1 MCLRn         PGD 28 : <> RB7 ICD_PGD
;             RA0 <> :  2 AN0           PGC 27 : <> RB6 ICD_PGC
;             RA1 <> :  3 AN1               26 : <> RB5
;             RA2 <> :  4 AN2               25 : <> RB4
;             RA3 <> :  5 AN3           PGM 24 : <> RB3
;             RA4 <> :  6 T0CKI             23 : <> RB2
;             RA5 <> :  7 AN4/SS            22 : <> RB1
;             GND <> :  8 VSS          INT0 21 : <> RB0
;      20MHz XTAL -> :  9 OSC1          VDD 20 : <- 5v0
;      20MHz XTAL <- : 10 OSC2          VSS 19 : <- GND
;      LCD_RS RC0 -> : 11 T1OSO          RX 18 : <> RC7
;      LCD_E  RC1 <> : 12 T1OSI          TX 17 : <> RC6
; MAX7219_DI  RC2 <> : 13 CCP1          SDO 16 : <> RC5 MAX7219_CLK
;             RC3 <> : 14 SCK/SCL   SDA/SDI 15 : <> RC4 MAX7219_CSn
;                    +-------------------------+
;                              DIP-28
;
        LIST    r=dec, n=0, c=160
        errorlevel -302         ; Suppress the not in bank zero warning
#INCLUDE "P16F876A.INC"


;MACROS


        __CONFIG        _BODEN_OFF & _CP_OFF & _CPD_OFF &_WRT_OFF & _PWRTE_OFF & _WDT_OFF & _LVP_OFF & _HS_OSC & _DEBUG_OFF

        LIST    P=16F876A

#define BANK0   H'000'
#define BANK1   H'080'
#define BANK2   H'100'
#define BANK3   H'180'

;RTC DEFINES---------------
#DEFINE DIN     PORTC,2
#DEFINE CLK     PORTC,5
#DEFINE LOAD    PORTC,4
;RTC DEFINES END-----------


;VARIABLES-------------------------
        CBLOCK  H'20'

SPI_TEMP
CHAR_TO_SEND

        ENDC


        ORG     0
                NOP
                GOTO    RESET


;MAX7219 SUBS----------------------------------------------------------------------------------
;
; Function: BB_SPI_TX
;
; Description:
;   Bit-Bang SPI transmit function.
;
; Input:    WREG = 8-bit to send to SPI device
;
; Output:   none
;
; Uses:     SPI_TEMP
;
#define SPI_MOSI_MASK (B'00000100')
BB_SPI_TX:
                MOVWF   SPI_TEMP
                RLF     SPI_TEMP,W
                XORWF   SPI_TEMP,F
                BSF     SPI_TEMP,0
                MOVLW   SPI_MOSI_MASK
                BCF     DIN             ; Clear PORTC bit 2
BB_SPI_TX1:
                BCF     CLK
                BTFSC   STATUS,C
                XORWF   PORTC,F         ; Update MOSI output bit
                BCF     STATUS,C
                RLF     SPI_TEMP,F
                BSF     CLK
                MOVF    SPI_TEMP,F
                BTFSS   STATUS,Z
                GOTO    BB_SPI_TX1
                BCF     CLK
                RETURN

;
; Function: SEND_ASCII
;
; Description:
;   Lookup ASCII character in 5x7 character generator table in code space
;   and send pattern to MAX7219.
;
; Input:    WREG = ASCII character.
;
; Output:   none
;
; Uses:
;
; Calls:    CG_SET_ADDRESS, CG_LOOK_UP, BB_SPI_TX
;
SEND_ASCII:
                CALL    CG_SET_ADDRESS

                CALL    MAX7219_SELECT
                MOVLW   D'2'            ; Row 1 of 5x7 pattern
                CALL    BB_SPI_TX
                CALL    CG_LOOK_UP      ; Send data
                CALL    BB_SPI_TX
                CALL    MAX7219_DESELECT

                CALL    MAX7219_SELECT
                MOVLW   D'3'            ; Row 2 of 5x7 pattern
                CALL    BB_SPI_TX
                CALL    CG_LOOK_UP      ; Send data
                CALL    BB_SPI_TX
                CALL    MAX7219_DESELECT

                CALL    MAX7219_SELECT
                MOVLW   D'4'            ; Row 3 of 5x7 pattern
                CALL    BB_SPI_TX
                CALL    CG_LOOK_UP      ; Send data
                CALL    BB_SPI_TX
                CALL    MAX7219_DESELECT

                CALL    MAX7219_SELECT
                MOVLW   D'5'            ; Row 4 of 5x7 pattern
                CALL    BB_SPI_TX
                CALL    CG_LOOK_UP      ; Send data
                CALL    BB_SPI_TX
                CALL    MAX7219_DESELECT

                CALL    MAX7219_SELECT
                MOVLW   D'6'            ; Row 5 of 5x7 pattern
                CALL    BB_SPI_TX
                CALL    CG_LOOK_UP      ; Send data
                CALL    BB_SPI_TX
                CALL    MAX7219_DESELECT

                RETURN
;
; Function: CG_SET_ADDRESS
;
; Description:
;   Set address for character generator lookup.
;   Multiply the ASCII character code by 5 and
;   add the based address of the look up table.
;
; Input:    WREG = ASCII character.
;
; Output:   EEADRH:EEADR set to first byte of data
;
CG_SET_ADDRESS:
                banksel BANK2
                MOVWF   EEADR
                CLRF    EEADRH
                CLRC
                RLF     EEADR,F
                RLF     EEADRH,F
                RLF     EEADR,F
                RLF     EEADRH,F
                ADDWF   EEADR,F
                BTFSC   STATUS,C
                INCF    EEADRH,F
                MOVLW   LOW(ASCII_CHAR_GEN)
                ADDWF   EEADR,F
                BTFSC   STATUS,C
                INCF    EEADRH,F
                MOVLW   HIGH(ASCII_CHAR_GEN)
                ADDWF   EEADRH,F
                banksel BANK0
                RETURN
;
; Function: CG_LOOK_UP
;
; Input:        Code space address in EEADRH:EEADR
;
; Output:       WREG = Low 8-bit at address
;               EEADRH:EEADR incremented
;
CG_LOOK_UP:
                banksel BANK3           ; Bank 3
                BSF     EECON1,EEPGD    ; Point to PROGRAM memory
                BSF     EECON1,RD       ; EE Read
                NOP                     ; 2-cycle wait
                NOP                     ; to read code space
                banksel BANK2
                MOVF    EEDATA,W        ; W = low 8-bits of data in program space
                INCF    EEADR,F         ; Increment to next address
                BTFSC   STATUS,Z
                INCF    EEADRH,F
                banksel BANK0
                RETURN
;
; Assert the SPI chip select for the MAX7219
;
MAX7219_SELECT:
                BCF     LOAD
                RETURN
;
; Deassert the SPI chip select for the MAX7219
;
MAX7219_DESELECT:
                BSF     LOAD
                NOP
                NOP
                NOP
                RETURN

;
; Function: MAX7219INIT
;
; Description:
;   Initialize MAX7219 LED Display driver
;
; Input:    none
;
; Output:   none
;
; Calls:    BB_SPI_TX, MAX7219_DESELECT
;
MAX7219INIT:
                CALL    MAX7219_DESELECT
                BCF     CLK

                CALL    MAX7219_SELECT
                MOVLW   H'0C'           ;SHUTDOWN COMMAND
                CAll    BB_SPI_TX
                MOVLW   H'01'           ;RELEASED
                CAll    BB_SPI_TX
                CALL    MAX7219_DESELECT

                CALL    MAX7219_SELECT
                MOVLW   H'09'           ;DECODE MODE COMMAND
                CAll    BB_SPI_TX
                MOVLW   D'0'            ;DISABLED FOR ALL DIGITS
                CAll    BB_SPI_TX
                CALL    MAX7219_DESELECT

                CALL    MAX7219_SELECT
                MOVLW   H'0A'           ;INTENSITY COMMAND
                CAll    BB_SPI_TX
                MOVLW   H'01'           ;INTENSITY VALUE
                CAll    BB_SPI_TX
                CALL    MAX7219_DESELECT

                CALL    MAX7219_SELECT
                MOVLW   H'0B'           ;SCAN LIMIT COMMAND
                CAll    BB_SPI_TX
                MOVLW   H'07'           ;ALL DIGITS
                CAll    BB_SPI_TX
                CALL    MAX7219_DESELECT

                CALL    MAX7219_SELECT
                MOVLW   H'0F'           ;TEST MODE COMMAND
                CAll    BB_SPI_TX
                MOVLW   D'0'            ;NORMAL
                CAll    BB_SPI_TX
                CALL    MAX7219_DESELECT

                MOVLW   D'1'            ; 
                CALL    ZERO_COLUMN
                MOVLW   D'2'            ; 
                CALL    ZERO_COLUMN
                MOVLW   D'3'            ; 
                CALL    ZERO_COLUMN
                MOVLW   D'4'            ; 
                CALL    ZERO_COLUMN
                MOVLW   D'5'            ; 
                CALL    ZERO_COLUMN
                MOVLW   D'6'            ; 
                CALL    ZERO_COLUMN
                MOVLW   D'7'            ; 
                CALL    ZERO_COLUMN
                MOVLW   D'8'            ; 
ZERO_COLUMN:
                CALL    MAX7219_SELECT
                CALL    BB_SPI_TX
                MOVLW   0
                CALL    BB_SPI_TX
                CALL    MAX7219_DESELECT

                RETURN


;MAX7219 SUBS ENDS-----------------------------------------------------------------------------
INIT
                CLRF    INTCON          ;DISABLE INTERUPTS
                CLRF    STATUS
                MOVLW   B'00000111'     ;DISABLE COMPS.
                MOVWF   CMCON           ;
                banksel BANK1           ;SELECT BANK1
                                        ;Disable pull-ups
                                        ;INT on rising edge
                                        ;TMR0 clock source is FOSC/4
                                        ;TMR0 Incr low2high trans.
                                        ;Prescaler assign to Timer0
                                        ;Prescaler rate is 1:256
                MOVLW   B'11010111'     ;Set PIC options (See datasheet).
                MOVWF   OPTION_REG      ;Write the OPTION register.
                MOVLW   D'6'
                MOVWF   ADCON1          ;SET PORT A AS DIGITAL I/O'S NOT AS AD CVONVERTORS
                                        ;START UP AS A/D PINS NOT AS DIGITAL I/O PINS WHY ?
                MOVLW   B'11111111'     ;
                MOVWF   TRISB           ;ALL PORT B OUTPUTS EXCEPT RB7 AND RB6, USED FOR ICD
                MOVLW   B'11000000'
                MOVWF   TRISC           ;ALL PORT C OUTPUTS EXCEPT RC7 AND RC6 USED FOR USART
                MOVLW   B'11011111'     ;ALL PORT A INPUTS  EXCEPT RA5
                MOVWF   TRISA
                banksel BANK0           ;SELECT BANK0
                CLRF    PORTB           ;PORTB CLEAR
                CLRF    PORTC           ;PORTC CLEAR
                MOVLW   B'00100000'     ;ASSERT MAX7219 LOAD PIN TO HIGH
                MOVWF   PORTA           ;PORTA CLEAR

                RETURN                  ;END OF SUB
;
; Function: DELAY
;
; Description:
;   Use TIMER0 to count cycles for a delay.
;
;   Delay: (4 * PRESCAL_VALUE * TIMER0_COUNT * WREG) / FOSC
;          (4 * 256           * 256          * 76  ) / 20000000 = 0.9961472 seconds
;
DELAY:
                MOVLW   D'76'
                BCF     INTCON,TMR0IF
DELAY_1:
                BTFSS   INTCON,TMR0IF
                GOTO    DELAY_1
                BCF     INTCON,TMR0IF
                ADDLW   -1
                BTFSS   STATUS,Z
                GOTO    DELAY_1
                RETURN

;------------------------------------------------------------------------------------------

RESET:
                CALL    INIT
                CALL    MAX7219INIT
SHOW_START:
                MOVLW   '!'
                MOVWF   CHAR_TO_SEND
SHOW_LOOP:
                MOVF    CHAR_TO_SEND,W
                CALL    SEND_ASCII
                CALL    DELAY
                INCF    CHAR_TO_SEND,F
                MOVLW   D'132'
                XORWF   CHAR_TO_SEND,W
                BTFSS   STATUS,Z
                GOTO    SHOW_LOOP
                GOTO    SHOW_START

;
; Reserved the last 0x500 instruction words (0x1B00 to 0x1FFF)
; of code space in page 3 for the ASCII character generator table.
;
        ORG     H'1B00'

ASCII_CHAR_GEN:
                DW      B'00000000',B'00000000',B'00000000',B'00000000',B'  00000000'  ;       ASCII   0
                DW      B'00000000',B'00000000',B'00000000',B'00000000',B'  00000000'  ;       ASCII   1
                DW      B'00000000',B'00000000',B'00000000',B'00000000',B'  00000000'  ;       ASCII   2
                DW      B'00000000',B'00000000',B'00000000',B'00000000',B'  00000000'  ;       ASCII   3
                DW      B'00000000',B'00000000',B'00000000',B'00000000',B'  00000000'  ;       ASCII   4
                DW      B'00000000',B'00000000',B'00000000',B'00000000',B'  00000000'  ;       ASCII   5
                DW      B'00000000',B'00000000',B'00000000',B'00000000',B'  00000000'  ;       ASCII   6
                DW      B'00000000',B'00000000',B'00000000',B'00000000',B'  00000000'  ;       ASCII   7
                DW      B'00000000',B'00000000',B'00000000',B'00000000',B'  00000000'  ;       ASCII   8
                DW      B'00000000',B'00000000',B'00000000',B'00000000',B'  00000000'  ;       ASCII   9
                DW      B'00000000',B'00000000',B'00000000',B'00000000',B'  00000000'  ;       ASCII  10
                DW      B'00000000',B'00000000',B'00000000',B'00000000',B'  00000000'  ;       ASCII  11
                DW      B'00000000',B'00000000',B'00000000',B'00000000',B'  00000000'  ;       ASCII  12
                DW      B'00000000',B'00000000',B'00000000',B'00000000',B'  00000000'  ;       ASCII  13
                DW      B'00000000',B'00000000',B'00000000',B'00000000',B'  00000000'  ;       ASCII  14
                DW      B'00000000',B'00000000',B'00000000',B'00000000',B'  00000000'  ;       ASCII  15
                DW      B'00000000',B'00000000',B'00000000',B'00000000',B'  00000000'  ;       ASCII  16
                DW      B'00000000',B'00000000',B'00000000',B'00000000',B'  00000000'  ;       ASCII  17
                DW      B'00000000',B'00000000',B'00000000',B'00000000',B'  00000000'  ;       ASCII  18
                DW      B'00000000',B'00000000',B'00000000',B'00000000',B'  00000000'  ;       ASCII  19
                DW      B'00000000',B'00000000',B'00000000',B'00000000',B'  00000000'  ;       ASCII  20
                DW      B'00000000',B'00000000',B'00000000',B'00000000',B'  00000000'  ;       ASCII  21
                DW      B'00000000',B'00000000',B'00000000',B'00000000',B'  00000000'  ;       ASCII  22
                DW      B'00000000',B'00000000',B'00000000',B'00000000',B'  00000000'  ;       ASCII  23
                DW      B'00000000',B'00000000',B'00000000',B'00000000',B'  00000000'  ;       ASCII  24
                DW      B'00000000',B'00000000',B'00000000',B'00000000',B'  00000000'  ;       ASCII  25
                DW      B'00000000',B'00000000',B'00000000',B'00000000',B'  00000000'  ;       ASCII  26
                DW      B'00000000',B'00000000',B'00000000',B'00000000',B'  00000000'  ;       ASCII  27
                DW      B'00000000',B'00000000',B'00000000',B'00000000',B'  00000000'  ;       ASCII  28
                DW      B'00000000',B'00000000',B'00000000',B'00000000',B'  00000000'  ;       ASCII  29
                DW      B'00000000',B'00000000',B'00000000',B'00000000',B'  00000000'  ;       ASCII  30
                DW      B'00000000',B'00000000',B'00000000',B'00000000',B'  00000000'  ;       ASCII  31
                DW      B'00000000',B'00000000',B'00000000',B'00000000',B'  00000000'  ;SPACE  ASCII  32
                DW      B'00000000',B'00000000',B'11111010',B'00000000',B'  00000000'  ;!      ASCII  33
                DW      B'00000000',B'11100000',B'00000000',B'11100000',B'  00000000'  ;"      ASCII  34
                DW      B'00101000',B'11111110',B'00101000',B'11111110',B'  00101000'  ;#      ASCII  35
                DW      B'01001000',B'01010100',B'11111110',B'01010100',B'  00100100'  ;$      ASCII  36
                DW      B'01000110',B'00100110',B'00010000',B'11001000',B'  11000100'  ;%      ASCII  37
                DW      B'00001010',B'01000100',B'10101010',B'10010010',B'  01101100'  ;&      ASCII  38
                DW      B'00000000',B'00000000',B'11000000',B'00000000',B'  00000000'  ;'      ASCII  39
                DW      B'00000000',B'10000010',B'01000100',B'00111000',B'  00000000'  ;(      ASCII  40
                DW      B'00000000',B'00111000',B'01000100',B'10000010',B'  00000000'  ;)      ASCII  41
                DW      B'01000100',B'00101000',B'11111110',B'00101000',B'  01000100'  ;*      ASCII  42
                DW      B'00010000',B'00010000',B'01111100',B'00010000',B'  00010000'  ;+      ASCII  43
                DW      B'00000000',B'00000000',B'00001100',B'00001010',B'  00000000'  ;,      ASCII  44
                DW      B'00010000',B'00010000',B'00010000',B'00010000',B'  00010000'  ;-      ASCII  45
                DW      B'00000000',B'00000000',B'00000110',B'00000110',B'  00000000'  ;.      ASCII  46
                DW      B'01000000',B'00100000',B'00010000',B'00001000',B'  00000100'  ;/      ASCII  47
                DW      B'01111100',B'10100010',B'10010010',B'10001010',B'  01111100'  ;0      ASCII  48
                DW      B'00000010',B'00000010',B'11111110',B'01000010',B'  00100010'  ;1      ASCII  49
                DW      B'01100010',B'10010010',B'10001010',B'10000110',B'  01000010'  ;2      ASCII  50
                DW      B'01101100',B'10010010',B'10010010',B'10000010',B'  01000100'  ;3      ASCII  51
                DW      B'00001000',B'11111110',B'01001000',B'00101000',B'  00011000'  ;4      ASCII  52
                DW      B'10001100',B'10010010',B'10010010',B'10010010',B'  11110100'  ;5      ASCII  53
                DW      B'00001100',B'10010010',B'10010010',B'01010010',B'  00111100'  ;6      ASCII  54
                DW      B'11000000',B'10100000',B'10010000',B'10001110',B'  10000000'  ;7      ASCII  55
                DW      B'01101100',B'10010010',B'10010010',B'10010010',B'  01101100'  ;8      ASCII  56
                DW      B'01111000',B'10010100',B'10010010',B'10010010',B'  01100000'  ;9      ASCII  57
                DW      B'00000000',B'00000000',B'01101100',B'01101100',B'  00000000'  ;:      ASCII  58
                DW      B'00000000',B'00000000',B'01101100',B'01101010',B'  00000000'  ;;      ASCII  59
                DW      B'00000000',B'10000010',B'01000100',B'00101000',B'  00010000'  ;<      ASCII  60
                DW      B'00101000',B'00101000',B'00101000',B'00101000',B'  00101000'  ;=      ASCII  61
                DW      B'00010000',B'00101000',B'01000100',B'10000010',B'  00000000'  ;>      ASCII  62
                DW      B'01100000',B'10010000',B'10001010',B'10000000',B'  01000000'  ;?      ASCII  63
                DW      B'01111100',B'10000010',B'10011110',B'10010010',B'  01001100'  ;@      ASCII  64
                DW      B'01111110',B'10010000',B'10010000',B'10010000',B'  01111110'  ;A      ASCII  65
                DW      B'01101100',B'10010010',B'10010010',B'10010010',B'  11111110'  ;B      ASCII  66
                DW      B'01000100',B'10000010',B'10000010',B'10000010',B'  01111100'  ;C      ASCII  67
                DW      B'01111100',B'10000010',B'10000010',B'10000010',B'  11111110'  ;D      ASCII  68
                DW      B'10000010',B'10010010',B'10010010',B'10010010',B'  11111110'  ;E      ASCII  69
                DW      B'10000000',B'10010000',B'10010000',B'10010000',B'  11111110'  ;F      ASCII  70
                DW      B'01001110',B'10001010',B'10000010',B'10000010',B'  01111100'  ;G      ASCII  71
                DW      B'11111110',B'00010000',B'00010000',B'00010000',B'  11111110'  ;H      ASCII  72
                DW      B'10000010',B'10000010',B'11111110',B'10000010',B'  10000010'  ;I      ASCII  73
                DW      B'11111100',B'00000010',B'00000010',B'00000010',B'  00000100'  ;J      ASCII  74
                DW      B'10000010',B'01000100',B'00101000',B'00010000',B'  11111110'  ;K      ASCII  75
                DW      B'00000010',B'00000010',B'00000010',B'00000010',B'  11111110'  ;L      ASCII  76
                DW      B'11111110',B'01000000',B'00110000',B'01000000',B'  11111110'  ;M      ASCII  77
                DW      B'11111110',B'00001000',B'00010000',B'00100000',B'  11111110'  ;N      ASCII  78
                DW      B'01111100',B'10000010',B'10000010',B'10000010',B'  01111100'  ;O      ASCII  79
                DW      B'01100000',B'10010000',B'10010000',B'10010000',B'  11111110'  ;P      ASCII  80
                DW      B'01111010',B'10000100',B'10001010',B'10000010',B'  01111100'  ;Q      ASCII  81
                DW      B'01100010',B'10010100',B'10011000',B'10010000',B'  11111110'  ;R      ASCII  82
                DW      B'01001100',B'10010010',B'10010010',B'10010010',B'  01100100'  ;S      ASCII  83
                DW      B'10000000',B'10000000',B'11111110',B'10000000',B'  10000000'  ;T      ASCII  84
                DW      B'11111100',B'00000010',B'00000010',B'00000010',B'  11111100'  ;U      ASCII  85
                DW      B'11100000',B'00011000',B'00000110',B'00011000',B'  11100000'  ;V      ASCII  86
                DW      B'11111100',B'00000010',B'00011100',B'00000010',B'  11111100'  ;W      ASCII  87
                DW      B'11000110',B'00101000',B'00010000',B'00101000',B'  11000110'  ;X      ASCII  88
                DW      B'11000000',B'00100000',B'00011110',B'00100000',B'  11000000'  ;Y      ASCII  89
                DW      B'11000010',B'10100010',B'10010010',B'10001010',B'  10000110'  ;Z      ASCII  90
                DW      B'00000000',B'00000000',B'10000010',B'10000010',B'  11111110'  ;[      ASCII  91
                DW      B'00000100',B'00001000',B'00010000',B'00100000',B'  01000000'  ;\      ASCII  92
                DW      B'00000000',B'00000000',B'11111110',B'10000010',B'  10000010'  ;]      ASCII  93
                DW      B'00100000',B'01000000',B'10000000',B'01000000',B'  00100000'  ;^      ASCII  94
                DW      B'00000010',B'00000010',B'00000010',B'00000010',B'  00000010'  ;_      ASCII  95
                DW      B'00000000',B'00100000',B'01000000',B'10000000',B'  00000000'  ;`      ASCII  96
                DW      B'00011110',B'00101010',B'00101010',B'00101010',B'  00000100'  ;a      ASCII  97
                DW      B'00011100',B'00100010',B'00100010',B'00010010',B'  11111110'  ;b      ASCII  98
                DW      B'00000100',B'00100010',B'00100010',B'00100010',B'  00011100'  ;c      ASCII  99
                DW      B'11111110',B'00010010',B'00100010',B'00100010',B'  00011100'  ;d      ASCII 100
                DW      B'00011000',B'00101010',B'00101010',B'00101010',B'  00011100'  ;e      ASCII 101
                DW      B'01000000',B'10000000',B'10010000',B'01111110',B'  00010000'  ;f      ASCII 102
                DW      B'01111100',B'01001010',B'01001010',B'01001010',B'  00110000'  ;g      ASCII 103
                DW      B'00011110',B'00100000',B'00100000',B'00010000',B'  11111110'  ;h      ASCII 104
                DW      B'00000000',B'00000010',B'10111110',B'00100010',B'  00000000'  ;i      ASCII 105
                DW      B'00000000',B'10111100',B'00100010',B'00000010',B'  00000100'  ;j      ASCII 106
                DW      B'00000000',B'00100010',B'00010100',B'00001000',B'  11111110'  ;k      ASCII 107
                DW      B'00000000',B'00000010',B'11111110',B'10000010',B'  00000000'  ;l      ASCII 108
                DW      B'00011110',B'00100000',B'00011000',B'00100000',B'  00111110'  ;m      ASCII 109
                DW      B'00011110',B'00100000',B'00100000',B'00010000',B'  00111110'  ;n      ASCII 110
                DW      B'00011100',B'00100010',B'00100010',B'00100010',B'  00011100'  ;o      ASCII 111
                DW      B'00010000',B'00101000',B'00101000',B'00101000',B'  00111110'  ;p      ASCII 112
                DW      B'00111110',B'00011000',B'00101000',B'00101000',B'  00010000'  ;q      ASCII 113
                DW      B'00010000',B'00100000',B'00100000',B'00010000',B'  00111110'  ;r      ASCII 114
                DW      B'00000100',B'00101010',B'00101010',B'00101010',B'  00010010'  ;s      ASCII 115
                DW      B'00000100',B'00000010',B'00100010',B'11111100',B'  00100000'  ;t      ASCII 116
                DW      B'00111110',B'00000100',B'00000010',B'00000010',B'  00111100'  ;u      ASCII 117
                DW      B'00111000',B'00000100',B'00000010',B'00000100',B'  00111000'  ;v      ASCII 118
                DW      B'00111100',B'00000010',B'00001100',B'00000010',B'  00111100'  ;w      ASCII 119
                DW      B'00100010',B'00010100',B'00001000',B'00010100',B'  00100010'  ;x      ASCII 120
                DW      B'00111100',B'00001010',B'00001010',B'00001010',B'  00110000'  ;y      ASCII 121
                DW      B'00100010',B'00110010',B'00101010',B'00100110',B'  00100010'  ;z      ASCII 122
                DW      B'10000010',B'01101100',B'00010000',B'00000000',B'  00000000'  ;{      ASCII 123
                DW      B'00000000',B'00000000',B'11111110',B'00000000',B'  00000000'  ;|      ASCII 124
                DW      B'00000000',B'00010000',B'01101100',B'10000010',B'  00000000'  ;}      ASCII 125
                DW      B'11001100',B'11000010',B'00010010',B'11000010',B'  11001100'  ;SMILE  ASCII 126 USER DEFINEABLE CHARS START HERE UNTIL 255
                DW      B'00000000',B'00000000',B'00000000',B'00000000',B'  00000000'  ;       ASCII 127 USED AS MESSAGE END DONT USE
                DW      B'11000100',B'11000100',B'00010100',B'11000100',B'  11000100'  ;SOSO   ASCII 128
                DW      B'11111110',B'11111110',B'11111110',B'11111110',B'  11111110'  ;       ASCII 129
                DW      B'11111110',B'10000010',B'10000010',B'10000010',B'  11111110'  ;       ASCII 130
                DW      B'11000110',B'11001000',B'00011000',B'11001000',B'  11000110'  ;SAD    ASCII 131
                DW      B'00000000',B'00000000',B'00000000',B'00000000',B'  00000000'  ;       ASCII 132

                END

This Windows video file shows what my display does.
[video]https://github.com/dsoze1138/Microchip/blob/master/PIC/16F/16F876A/16F876A_MAX7219/docs/PIC16F876A_MAX7219.wmv?raw=true[/video]
 

Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top