Свои символы hd44780 Опции

[Specialist]

Привет. Пишу свои функции для управления дисплеем. Использую PIC, компилятор Hi-Tech C for PIC Вроде бы все работает нормально. Но как только загружаю свой символ в CGRAM у меня а дисплее абракадабра получается.

Записать 4 бита RS data
void mylcd_wdata4(char,char);

Делаю вот так, но я не полностью понял как пользовательские символы записывать туда.

Код

char user_gradus[16] = {0b0000,0b1110,0b0001,0b0001,0b0001,0b0001,0b0000,0b1110,0,0,0,0,0,0,0,0}; // Цельсий

mylcd_init();

mylcd_wdata4(0,0b0100);//Пока записываю по 4 бита, дальше не делал.
mylcd_wdata4(0,0b0001);//Тут я выбрал адрес в CGRAM

for (i=0; i<16; i++) mylcd_wdata4(1,user_gradus[i]);

Что тут не так ?

Сообщение отредактировал Specialist - Jul 29 2008, 09:25

[zksystem]

Привожу свой пример, может поможет:

Код

//--- Дополнительные символы для знакогенератора LCD модуля --------------

static const unsigned char lcd_charset[]={    0b00000000, //0
                                            0b00010000,
                                            0b00011000,
                                            0b00011100,
                                            0b00011100,
                                            0b00011000,
                                            0b00010000,
                                            0b00000000,

                                            0b00000000, //1
                                            0b00000001,
                                            0b00000011,
                                            0b00000111,
                                            0b00000111,
                                            0b00000011,
                                            0b00000001,
                                            0b00000000,

                                            0b00000000, //2
                                            0b00011111,
                                            0b00010001,
                                            0b00010001,
                                            0b00010001,
                                            0b00010001,
                                            0b00011111,
                                            0b00000000,

                                            0b00000000, //3
                                            0b00011111,
                                            0b00011111,
                                            0b00011111,
                                            0b00011111,
                                            0b00011111,
                                            0b00011111,
                                            0b00000000,

                                            0b00000000, //4
                                            0b00000000,
                                            0b00000000,
                                            0b11011011,
                                            0b11011011,
                                            0b11011011,
                                            0b11011011,
                                            0b11011011};



#define    lcd_udg_data = 5*8

//--- write data to LCD char,RS ---

void lcd_data(unsigned char c, unsigned char reg)
{
    DelayMs(4);
    TRISD2 = 0;

    LCD_RS = reg;
    LCD_PORT = (LCD_PORT & 0xF0) |  (c >> 4);
    LCD_STROBE;
    LCD_PORT = (LCD_PORT & 0xF0) |  (c & 0x0F);
    LCD_STROBE;
}

void lcd_loadchars(void)
{
    unsigned char i;

// загрузка дополнительных символов в LCD модуль

    for (i=0;i<lcd_udg_data;i++)
    {
        lcd_data(0x40+i,0);
        lcd_data(lcd_charset[i],1);
    }
}