/*
* Before, sysTick must be initialized.
* It use delay_ms function!
*/
void LCD5110_Initialize() {
LCD5110_GPIO_Config();
delay_ms(10);
LCD5110_RST(0); //LCD_RST = 0;
delay_ms(1);
LCD5110_RST(1); //LCD_RST = 1;
LCD5110_CS(0); //SPI_CS = 0;
delay_ms(1);
LCD5110_CS(1); //SPI_CS = 1;
delay_ms(1);
#define LCD5110_BIAS_1x24 0x15
#define LCD5110_BIAS_1x40_1x34 0x14
#define LCD5110_BIAS_1x100 0x10 //n=7 1:100
#define LCD5110_BIAS_1x80 0x11 //n=6 1:80
#define LCD5110_BIAS_1x65 0x12 //n=5 1:65/1:65
#define LCD5110_BIAS_1x48 0x13 //n=4 1:48
#define LCD5110_BIAS_1x40_1x34 0x14 //n=3 1:40/1:34
#define LCD5110_BIAS_1x24 0x15 //n=2 1:24
#define LCD5110_BIAS_1x18_1x16 0x16 //n=1 1:18/1:16
#define LCD5110_BIAS_1x10_1x9_1x8 0x17 //n=0 1:10/1:9/1:8
//Must be adjusted to the temperature of ambient.
#define LCD5110_TEMPERATURE_COEFFICIENT0 0x04
#define LCD5110_TEMPERATURE_COEFFICIENT1 0x05
#define LCD5110_TEMPERATURE_COEFFICIENT2 0x06
#define LCD5110_TEMPERATURE_COEFFICIENT3 0x07
#define LCD5110_CommandSet_Extended 0x21 //H = 1
#define LCD5110_CommandSet_Basic 0x20 //H = 0
#define LCD5110_NormalMode 0x0C //H = 0
LCD5110_LCD_write_byte(LCD5110_CommandSet_Extended, 0);
LCD5110_LCD_write_byte(0xC0, 0);//Value of Vop(controls contrast) = (0x80 | 7-bit Vop value )
LCD5110_LCD_write_byte(LCD5110_TEMPERATURE_COEFFICIENT2, 0);
LCD5110_LCD_write_byte(LCD5110_BIAS_1x40_1x34, 0);
LCD5110_LCD_write_byte(LCD5110_CommandSet_Basic, 0);
LCD5110_Clear(); //Clear LCD
LCD5110_LCD_write_byte(LCD5110_NormalMode, 0); //enable normal display (dark on light), horizontal addressing
LCD5110_CS(0); //SPI_CS = 0;
}
static void LCD5110_LCD_write_byte(uint8_t dat, uint8_t command) {
uint8_t i;
LCD5110_CS(0); //SPI_CS = 0;
delay_us(20);
if (command == 0)
LCD5110_DC(0); //LCD_DC = 0;
else
LCD5110_DC(1); //LCD_DC = 1; - write data to RAM
delay_us(20);
for (i = 0; i < 8; i++) {
LCD5110_MO(dat & 0x80); //SPI_MO = dat & 0x80;
dat = dat << 1;
LCD5110_SCK(0); //SPI_SCK = 0;
delay_us(1);
LCD5110_SCK(1); //SPI_SCK = 1;
delay_us(1);
}
LCD5110_CS(1); //SPI_CS = 1;
}
void LCD5110_LCD_write_byte(unsigned char dat,unsigned char mode)
{
unsigned char i;
LCD5110_CS(0);//SPI_CS = 0;
if (0 == mode)
LCD5110_DC(0);//LCD_DC = 0;
else
LCD5110_DC(1);//LCD_DC = 1;
for(i=0;i<8;i++)
{
LCD5110_MO(dat & 0x80);//SPI_MO = dat & 0x80;
dat = dat<<1;
LCD5110_SCK(0);//SPI_SCK = 0;
LCD5110_SCK(1);//SPI_SCK = 1;
}
LCD5110_CS(1);//SPI_CS = 1;
}
void LCD5110_init()
{
LCD5110_GPIO_Config();
LCD5110_DC(1);//LCD_DC = 1;
LCD5110_MO(1);//SPI_MO = 1;
LCD5110_SCK(1);//SPI_SCK = 1;
LCD5110_CS(1);//SPI_CS = 1;
LCD5110_LCD_delay_ms(70);
LCD5110_LCD_write_byte(0x21,0); //21
LCD5110_LCD_write_byte(0xC2,0); //C2
LCD5110_LCD_write_byte(0x06,0); //06
LCD5110_LCD_write_byte(0x13,0); //13
LCD5110_LCD_write_byte(0x20,0); //20
LCD5110_clear();
LCD5110_LCD_write_byte(0x0C,0); // 0X0D positive
}