void LCD_Init()
{
rcc_peripheral_enable_clock(&RCC_AHB1ENR, RCC_AHB1ENR_IOPDEN);
//MOSI
gpio_mode_setup(GPIOD, GPIO_MODE_OUTPUT,
GPIO_PUPD_NONE, GPIO10);
//CLK
gpio_mode_setup(GPIOD, GPIO_MODE_OUTPUT,
GPIO_PUPD_NONE, GPIO11);
//RST
gpio_mode_setup(GPIOD, GPIO_MODE_OUTPUT,
GPIO_PUPD_NONE, GPIO12);
//A0
gpio_mode_setup(GPIOD, GPIO_MODE_OUTPUT,
GPIO_PUPD_NONE, GPIO13);
//CS
gpio_mode_setup(GPIOD, GPIO_MODE_OUTPUT,
GPIO_PUPD_NONE, GPIO14);
NCS_HI();
RST_HI();
lcd_delay(5);
RST_LO();
lcd_delay(120); //11ms
RST_HI();
lcd_delay(2500);
AspiCmd(0xE2);
lcd_delay(2500);
lcd_screen_init();
lcd_delay(120);
lcd_screen_init();
lcd_delay(120);
AspiCmd(0xAF); //dc2=1, IC into exit SLEEP MODE, dc3=1 gray=ON, dc4=1 Green Enhanc mode disabled
memset(img, 0, sizeof(img));
memset(dirty, 0, sizeof(dirty));
//Clear screen
for (int y = 0; y < LCD_HEIGHT; y++) {
lcd_set_row(y);
AspiCmd(0xAF);
CLK_HI();
A0_HI();
NCS_LO();
for (int x = 0; x < 212; x++) {
//write_pixel(((x/53) % 2) ^ ((y / 16) %2));
write_pixel(0);
}
NCS_HI();
A0_HI();
AspiData(0);
}
}
/* Screen is 212 x 64 with 4bpp */
void LCD_DrawStop(void)
{
for (int y = 0; y < LCD_HEIGHT; y++) {
if(! (dirty[y / 8] & (1 << (y % 8))))
continue;
u8 *p = &img[(y / 8) * LCD_WIDTH];
u8 mask = 1 << (y % 8);
lcd_set_row(y);
AspiCmd(0xAF);
CLK_HI();
A0_HI();
NCS_LO();
for (int x = 0; x < LCD_WIDTH; x++) {
write_pixel(p[x] & mask);
}
NCS_HI();
A0_HI();
AspiData(0);
}
memset(dirty, 0, sizeof(dirty));
}
void refreshDisplay()
{
for (uint32_t y=0; y<DISPLAY_H; y++)
{
uint8_t *p = &DisplayBuf[(y>>3)*DISPLAY_W];
uint8_t mask = (1 << (y%8));
GPIO_TypeDef *gpiod = GPIOD ;
uint32_t *bsrr = (uint32_t *)&gpiod->BSRRL ;
Set_Address(0, y);
AspiCmd(0xAF);
gpiod->BSRRL = PIN_LCD_CLK ; // Clock high
gpiod->BSRRL = PIN_LCD_A0 ; // A0 high
gpiod->BSRRH = PIN_LCD_NCS ; // CS low
for (uint32_t x=0; x<DISPLAY_W; x+=2)
{
uint32_t data ;
data = 0 ;
if ( p[x] & mask )
{
data = 0xF0 ;
}
if (p[x+1] & mask )
{
data += 0x0F ;
}
if(data&0x80)
{
gpiod->BSRRL = PIN_LCD_MOSI ;
}
else
{
gpiod->BSRRH = PIN_LCD_MOSI ;
}
gpiod->BSRRH = PIN_LCD_CLK ; // Clock low
if(data&0x40)
{
gpiod->BSRRL = PIN_LCD_MOSI | PIN_LCD_CLK ;
}
else
{
*bsrr = (PIN_LCD_MOSI<<16) | PIN_LCD_CLK ;
}
__no_operation() ;
gpiod->BSRRH = PIN_LCD_CLK ; // Clock low
if(data&0x20)
{
gpiod->BSRRL = PIN_LCD_MOSI | PIN_LCD_CLK ;
}
else
{
*bsrr = (PIN_LCD_MOSI<<16) | PIN_LCD_CLK ;
}
__no_operation() ;
gpiod->BSRRH = PIN_LCD_CLK ; // Clock low
if(data&0x10)
{
gpiod->BSRRL = PIN_LCD_MOSI | PIN_LCD_CLK ;
}
else
{
*bsrr = (PIN_LCD_MOSI<<16) | PIN_LCD_CLK ;
}
__no_operation() ;
gpiod->BSRRH = PIN_LCD_CLK ; // Clock low
if(data&0x08)
{
gpiod->BSRRL = PIN_LCD_MOSI | PIN_LCD_CLK ;
}
else
{
*bsrr = (PIN_LCD_MOSI<<16) | PIN_LCD_CLK ;
}
__no_operation() ;
gpiod->BSRRH = PIN_LCD_CLK ; // Clock low
if(data&0x04)
{
gpiod->BSRRL = PIN_LCD_MOSI | PIN_LCD_CLK ;
}
else
{
*bsrr = (PIN_LCD_MOSI<<16) | PIN_LCD_CLK ;
}
__no_operation() ;
gpiod->BSRRH = PIN_LCD_CLK ; // Clock low
if(data&0x02)
{
gpiod->BSRRL = PIN_LCD_MOSI | PIN_LCD_CLK ;
}
else
{
*bsrr = (PIN_LCD_MOSI<<16) | PIN_LCD_CLK ;
}
__no_operation() ;
gpiod->BSRRH = PIN_LCD_CLK ; // Clock low
if(data&0x01)
{
gpiod->BSRRL = PIN_LCD_MOSI | PIN_LCD_CLK ;
}
else
{
*bsrr = (PIN_LCD_MOSI<<16) | PIN_LCD_CLK ;
}
__no_operation() ;
gpiod->BSRRH = PIN_LCD_CLK ; // Clock low
__no_operation() ;
gpiod->BSRRL = PIN_LCD_CLK ; // Clock high
}
gpiod->BSRRL = PIN_LCD_NCS ; // CS high
gpiod->BSRRL = PIN_LCD_A0 ;
AspiData(0);
}
}
