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Inhaltsverzeichnis
PIC16(F/LF)XXX
Schieberegister (z.b. CD4094)
; Datenleitungen Schiberegister alles Ausgänge #define CLK PORTB, 0 #define D PORTB, 1 #define STR PORTB, 2 #define T1 PORTB, 6
cd4094_send banksel PORTB bcf STR btfsc cdsend, 0 bsf D btfss cdsend, 0 bcf D bsf CLK bcf CLK btfsc cdsend, 1 bsf D btfss cdsend, 1 bcf D bsf CLK bcf CLK btfsc cdsend, 2 bsf D btfss cdsend, 2 bcf D bsf CLK bcf CLK btfsc cdsend, 3 bsf D btfss cdsend, 3 bcf D bsf CLK bcf CLK btfsc cdsend, 4 bsf D btfss cdsend, 4 bcf D bsf CLK bcf CLK btfsc cdsend, 5 bsf D btfss cdsend, 5 bcf D bsf CLK bcf CLK btfsc cdsend, 6 bsf D btfss cdsend, 6 bcf D bsf CLK bcf CLK btfsc cdsend, 7 bsf D btfss cdsend, 7 bcf D bsf CLK bcf CLK bsf STR return
MAX7456 (S/W OSD)
Variabeln und I/0:
cblock 0x70 ; Variabeln ab 0x70 setzen alle Register max 16stk. SPI_DATA_WRITE ; Zu Sendene SPI Daten SPI_DATA_READ ; Gelesend SPI Daten m_char ; Maxim7456 und sda5708 Zeichen m_pos ; Maxim7456 Position endc ; Variabeln setzen beenden #define SPI_CS PORTC, 7; SPI Slave Select max7456
Config:
; PORTC banksel TRISC ; auf Bank 1 umschalten movlw B'10010000' ; PortC I/O setzen (1=In, 0=Out) (Reinfolge RC7,RC6...) movwf TRISC ; PortC I/O setzen banksel PORTC clrf PORTC ; PortC auf 0 setzen ; SPI banksel SSPSTAT movlw B'11000000' ; Mitlere Geschwindigkeit Output Time movwf SSPSTAT banksel SSPCON movlw B'00100001' ; MODE 1,1, SPI MASTER, 1/16 Tosc SSP ON movwf SSPCON banksel PORTC bsf SPI_CS ; SPI Slave Select aus (high) return
SPI Sende/Enfangs Rotinen:
SPI_Send banksel PORTC bcf SPI_CS ; Chip Select an (Low) nop nop nop banksel SSPBUF movf SPI_DATA_WRITE, W movwf SSPBUF banksel SSPSTAT SPI_Wait btfss SSPSTAT, BF ; Ist das Senden Komplet ? goto SPI_Wait ; Wen nicht gehe zu SPIWait nop nop nop banksel PORTC bsf SPI_CS ; Chip Select aus (High) return SPI_Read banksel PORTC bcf SPI_CS nop nop nop banksel SSPBUF movf SSPBUF, W movwf SPI_DATA_READ banksel PORTC nop nop nop banksel PORTC bsf SPI_CS return
Defines ASCII to MAX7456 Charset und Config und Schreibrotienen:
max7456_define ; Defines für den max7456 Zeichensatz #define m_sp 0x00 ; Space #define m_1 0x01 #define m_2 0x02 #define m_3 0x03 #define m_4 0x04 #define m_5 0x05 #define m_6 0x06 #define m_7 0x07 #define m_8 0x08 #define m_9 0x09 #define m_0 0x0A #define m_A 0x0B #define m_B 0x0C #define m_C 0x0D #define m_D 0x0E #define m_E 0x0F #define m_F 0x10 #define m_G 0x11 #define m_H 0x12 #define m_I 0x13 #define m_J 0x14 #define m_K 0x15 #define m_L 0x16 #define m_M 0x17 #define m_N 0x18 #define m_O 0x19 #define m_P 0x1A #define m_Q 0x1B #define m_R 0x1C #define m_S 0x1D #define m_T 0x1E #define m_U 0x1F #define m_V 0x20 #define m_W 0x21 #define m_X 0x22 #define m_Y 0x23 #define m_Z 0x24 #define m_a 0x25 #define m_b 0x26 #define m_c 0x27 #define m_d 0x28 #define m_e 0x29 #define m_f 0x2A #define m_g 0x2B #define m_h 0x2C #define m_i 0x2D #define m_j 0x2E #define m_k 0x2F #define m_l 0x30 #define m_m 0x31 #define m_n 0x32 #define m_o 0x33 #define m_p 0x34 #define m_q 0x35 #define m_r 0x36 #define m_s 0x37 #define m_t 0x38 #define m_u 0x39 #define m_v 0x3A #define m_w 0x3B #define m_x 0x3C #define m_y 0x3D #define m_z 0x3E #define m_KLa 0x3F ; ( #define m_KLz 0x40 ; ) #define m_. 0x41 #define m_? 0x42 #define m_sem 0x43 ; ; #define m_: 0x44 #define m_ko 0x45 ; , #define m_ag 0x46 ; Agostroff #define m_bs 0x47 ; Backslasch #define m_as 0x48 ; Anfürungsstriche #define m_minus 0x49 ; Minus #define m_ka 0x4A ; < #define m_ga 0x4B ; > #define m_at 0x4C ; @ oder at #define m_wait 0xfb ; Wartezeichen #define m_ls 0xf9 ; Lautsprecher #define m_lso 0xfa ; Tonsignal #define m_ff 0xff ; Ausgefültes feld return max7456_conf ; Max7456 Config movlw 0x00 ; VM0 Video Mode Register 0 (Write) movwf SPI_DATA_WRITE call SPI_Send movlw B'01001000' ; 0 , 1=PAL, 00=Auto Sync, 1=Enable OSD, 0=Enable OSD immer, 0=SW RST, 0=Enable Video Buffer movwf SPI_DATA_WRITE call SPI_Send movlw 0x01 ; VM1 Video Mode Register 1 movwf SPI_DATA_WRITE call SPI_Send movlw B'00000100' ; 0 = NA, 000=Background MODE Brightness 100%, 11=Blinking Time 160ms, 00=Blinking Duty Cycle BT:BT movwf SPI_DATA_WRITE call SPI_Send movlw 0x02 ; HOS Horizontal Offset Register movwf SPI_DATA_WRITE call SPI_Send movlw B'00101111' ; 00 = NA, 100000 = Horitzontal Offset movwf SPI_DATA_WRITE call SPI_Send movlw 0x03 ; VOS Vertical Offset Register movwf SPI_DATA_WRITE call SPI_Send movlw B'00010111' ; 000 = NA, 10000 = Vertical Offset movwf SPI_DATA_WRITE call SPI_Send return max7456_cls ; max7456 ausgabe Löschen movlw 0x00 ; VM0 Video Mode Register 0 (Write) movwf SPI_DATA_WRITE call SPI_Send movlw B'01001010' ; 0 , 1=PAL, 00=Auto Sync, 1=Enable OSD, 0=Enable OSD immer, 1=SW RST, 0=Enable Video Buffer movwf SPI_DATA_WRITE call SPI_Send call max7456_conf return max7456_add_high ; High adressbereich movlw 0x05 ; Ersten 256 zeichen Low = 0x00, Letzten 256 Zeichen High=0xff movwf SPI_DATA_WRITE call SPI_Send movlw 0xFF movwf SPI_DATA_WRITE call SPI_Send return max7456_add_low ; Low Adressbereich movlw 0x05 ; Ersten 256 zeichen Low = 000, Letzten 256 Zeichen High=225 movwf SPI_DATA_WRITE call SPI_Send movlw 0x00 movwf SPI_DATA_WRITE call SPI_Send return max7456_send_char movlw 0x06 ; Zeichen Position links nach rechts erste reihe 0-29, 30-...... movwf SPI_DATA_WRITE call SPI_Send movf m_pos, W movwf SPI_DATA_WRITE call SPI_Send movlw 0x07 ; Zeichen Sonderzeichen sihe Define in max7456.inc movwf SPI_DATA_WRITE call SPI_Send movf m_char, W movwf SPI_DATA_WRITE call SPI_Send return
Zeichen Senden:
movlw D'12' ; Position movwf m_pos movlw m_e ; Zeichen (hier das kleine e) movwf m_char call max7456_send_char; Schreiben
High/low Adressbereich (low = ersten 256 Zeichen, High die letzten 128 Zeichen);
call max7456_add_low ; Low Adressbereich ;call max7456_add_high; Low Adressbereich
PIC18(F/LF)xxxx
