static cyg_uint8
eeprom_getb(int more)
{
int i;
cyg_uint8 b = 0;
HAL_GPIO_OUTPUT_DISABLE(GPIO_EEPROM_SDA);
hal_delay_us(5);
for (i = 7; i >= 0; i--) {
b <<= 1;
if (*IXP425_GPINR & (1 << GPIO_EEPROM_SDA))
b |= 1;
CLK_HI();
hal_delay_us(5);
CLK_LO();
hal_delay_us(5);
}
HAL_GPIO_OUTPUT_ENABLE(GPIO_EEPROM_SDA);
if (more)
DATA_LO();
else
DATA_HI();
hal_delay_us(5);
CLK_HI();
hal_delay_us(5);
CLK_LO();
hal_delay_us(5);
return b;
}
static int
eeprom_putb(cyg_uint8 b)
{
int i;
for (i = 7; i >= 0; i--) {
if (b & (1 << i))
DATA_HI();
else
DATA_LO();
CLK_HI();
hal_delay_us(5);
CLK_LO();
hal_delay_us(5);
}
HAL_GPIO_OUTPUT_DISABLE(GPIO_EEPROM_SDA);
CLK_HI();
hal_delay_us(5);
i = (*IXP425_GPINR & (1 << GPIO_EEPROM_SDA)) ? 0 : 1;
CLK_LO();
hal_delay_us(5);
DATA_HI();
HAL_GPIO_OUTPUT_ENABLE(GPIO_EEPROM_SDA);
return i;
}
static void
eeprom_stop(void)
{
int i;
hal_delay_us(5);
DATA_LO();
hal_delay_us(5);
CLK_HI();
hal_delay_us(5);
DATA_HI();
hal_delay_us(5);
CLK_LO();
hal_delay_us(5);
CLK_HI();
hal_delay_us(5);
}
void AspiData(u8 Para_data)
{
int i=8;
CLK_HI();
A0_HI();
NCS_LO();
while (i--) {
CLK_LO();
if (Para_data&0x80)
MOSI_HI();
else
MOSI_LO();
Para_data <<= 1;
__no_operation();
CLK_HI();
__no_operation();
}
NCS_HI();
A0_HI();
}
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);
}
}
void write_pixel(int bit)
{
for(int i = 0; i < 4; i++) {
if (bit)
MOSI_HI();
else
MOSI_LO();
CLK_LO();
__no_operation();
CLK_HI();
}
}
/* These are ported from th eopentx driver */
void AspiCmd(u8 Command_Byte)
{
int i=8;
A0_LO();
CLK_HI();
__no_operation();
NCS_LO();
while (i--) {
CLK_LO();
if (Command_Byte&0x80)
MOSI_HI();
else
MOSI_LO();
Command_Byte <<= 1;
CLK_HI();
__no_operation();
}
NCS_HI();
A0_HI();
}
/* 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));
}
