Danke für die Antworten.
Hier mal mein code/beschaltung.
Kontakte hab ich alle durchgetestet.
Code:#define DATA_PORT PORTA #define LCD_RS IOPORT_CREATE_PIN(PORTB,2) #define LCD_E IOPORT_CREATE_PIN(PORTB,0) #define LCD_RW IOPORT_CREATE_PIN(PORTB,1) #define P_DB0 IOPORT_CREATE_PIN(PORTA,0) #define P_DB1 IOPORT_CREATE_PIN(PORTA,1) #define P_DB2 IOPORT_CREATE_PIN(PORTA,2) #define P_DB3 IOPORT_CREATE_PIN(PORTA,3) #define P_DB4 IOPORT_CREATE_PIN(PORTA,4) #define P_DB5 IOPORT_CREATE_PIN(PORTA,5) #define P_DB6 IOPORT_CREATE_PIN(PORTA,6) #define P_DB7 IOPORT_CREATE_PIN(PORTA,7) void lcd_set_write_instruction(); void lcd_set_write_data(); void lcd_write_byte (char c); void lcd_clear_and_home(); void lcd_home(); void lcd_goto(uint8_t line, uint8_t pos); void lcd_line_one(); void lcd_line_two(); void lcd_write_data(char c); void lcd_write_string(char *x, uint8_t len ); void lcd_write_string_0(char *x); void lcd_write_string_p(const char *s); void lcd_init(); void lcd_set_on_off(uint8_t state); void lcd_write_inst(uint8_t cmd); //this function is directly called from main //it init the display and trys to print some test chars. The result is only a blinking cursor that moves void lcd_init() { ioport_configure_pin(LCD_E, IOPORT_INIT_LOW | IOPORT_DIR_OUTPUT); ioport_configure_pin(LCD_RS, IOPORT_INIT_LOW | IOPORT_DIR_OUTPUT); ioport_configure_pin(LCD_RW, IOPORT_INIT_LOW | IOPORT_DIR_OUTPUT); ioport_configure_pin(P_DB0, IOPORT_INIT_LOW | IOPORT_DIR_OUTPUT); ioport_configure_pin(P_DB1, IOPORT_INIT_LOW | IOPORT_DIR_OUTPUT); ioport_configure_pin(P_DB2, IOPORT_INIT_LOW | IOPORT_DIR_OUTPUT); ioport_configure_pin(P_DB3, IOPORT_INIT_LOW | IOPORT_DIR_OUTPUT); ioport_configure_pin(P_DB4, IOPORT_INIT_LOW | IOPORT_DIR_OUTPUT); ioport_configure_pin(P_DB5, IOPORT_INIT_LOW | IOPORT_DIR_OUTPUT); ioport_configure_pin(P_DB6, IOPORT_INIT_LOW | IOPORT_DIR_OUTPUT); ioport_configure_pin(P_DB7, IOPORT_INIT_LOW | IOPORT_DIR_OUTPUT); // Now do the actual LCD initialisations // startup delay - make it long to allow time for power to settle // (you want wish to remove this line) _delay_ms(250); // LCD display initialisation by instruction magic sequence lcd_set_write_instruction(); lcd_write_inst(0x38); // function set _delay_ms(100); lcd_write_inst(0x08); // display on/off control _delay_ms(100); lcd_write_inst(0x01); // display clear _delay_ms(100); lcd_write_inst(0x06); // entry mode set _delay_ms(100); lcd_write_inst(0x02); _delay_ms(100); lcd_write_inst(0x0F); _delay_ms(100); lcd_write_inst(0x0F); _delay_ms(100); lcd_write_inst(0x39); _delay_ms(100); lcd_write_inst(0x80); lcd_write_data('A'); lcd_write_data('B'); lcd_write_data('C'); lcd_write_data('D'); lcd_write_data('E'); _delay_ms(100); } void lcd_set_on_off(uint8_t state) { lcd_set_write_instruction(); if(state==1) { lcd_write_byte(0x0F); } if(state==0) { lcd_write_byte(0x08); } } // This function clears the RS line to write a command void lcd_set_write_instruction() { ioport_set_pin_low(LCD_RS); // set RS line low _delay_ms(1); } // This function sets the RS line to write data void lcd_set_write_data() { ioport_set_pin_high(LCD_RS); // set RS line high _delay_ms(1); } // This function writes a byte to the LCD void lcd_write_byte (char c) { ioport_set_pin_low(LCD_RW); int output[CHAR_BIT]; int i; for (i = 0; i < CHAR_BIT; ++i) { output[i] = (c >> i) & 1; } //manual approach if(output[0]==1) { ioport_set_pin_high(P_DB0); } else { ioport_set_pin_low(P_DB0); } if(output[1]==1) { ioport_set_pin_high(P_DB1); } else { ioport_set_pin_low(P_DB1); } if(output[2]==1) { ioport_set_pin_high(P_DB2); } else { ioport_set_pin_low(P_DB2); } if(output[3]==1) { ioport_set_pin_high(P_DB3); } else { ioport_set_pin_low(P_DB3); } if(output[4]==1) { ioport_set_pin_high(P_DB4); } else { ioport_set_pin_low(P_DB4); } if(output[5]==1) { ioport_set_pin_high(P_DB5); } else { ioport_set_pin_low(P_DB5); } if(output[6]==1) { ioport_set_pin_high(P_DB6); } else { ioport_set_pin_low(P_DB6); } if(output[7]==1) { ioport_set_pin_high(P_DB7); } else { ioport_set_pin_low(P_DB7); } _delay_us(100); //DATA_PORT.OUT = c; // Place data on Data Port ioport_set_pin_high(LCD_E); // set E line high _delay_us(100); ioport_set_pin_low(LCD_E); // set E line low to latch data into LCD _delay_ms(1); } // This function clears LCD and sets address to beginning of first line void lcd_clear_and_home() { lcd_set_write_instruction(); lcd_write_byte(0x01); _delay_ms(2); lcd_write_byte(0x02); _delay_ms(1); } // This function sets address to beginning of first line void lcd_home() { lcd_set_write_instruction(); lcd_write_byte(0x02); _delay_ms(1); } // This function moves cursor to a given line and position // line is either 0 (first line) or 1 (second line) // pos is the character position from 0 to 15. void lcd_goto(uint8_t line, uint8_t pos) { uint8_t position = 0; lcd_set_write_instruction(); switch(line) { case 0: position = 0; break; case 1: position = 0x40; break; } lcd_write_byte(0x80 | (position + pos)); } // This function moves the cursor to 1st character of 1st line void lcd_line_one() { lcd_goto(0, 0); } // This function moves the cursor to 1st character if 2nd line void lcd_line_two() { lcd_goto(1, 0); } // This function writes a character to the LCD void lcd_write_data(char c) { //ioport_set_pin_high(P_LED2); lcd_set_write_data(); lcd_write_byte(c); // lcd_write_inst(0x14); //ioport_set_pin_low(P_LED2); } void lcd_write_inst(uint8_t cmd) { lcd_set_write_instruction(); lcd_write_byte(cmd); } // This function writes a string (in SRAM) of given length to the LCD void lcd_write_string(char *x, uint8_t len ) { while (--len > 0) lcd_write_data(*x++); } // This function writes a null-terminated string (in SRAM) to the LCD void lcd_write_string_0(char *x) { while (*x) lcd_write_data(*x++); } // Same as above, but the string is located in program memory, // so "lpm" instructions are needed to fetch it, and a \0 // must be defined at the end of the string to terminate it. void lcd_write_string_p(const char *s) { char c; for (c = pgm_read_byte(s); c; ++s, c = pgm_read_byte(s)) lcd_write_data(c); }
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