uint8_t ATA_PIO_Identify(uint16_t *result)
{
//Check if the bus even exists
if(inb(CMD_REG_STATUS_PORT(curBase)) == 0xFF)return -1; //The bus doesn't exist
//IDENTIFY the disk
outb(SECTOR_COUNT_PORT(curBase), 0);
//Higher bytes first!
outb(LBA_HI_PORT(curBase), 0);
outb(LBA_MID_PORT(curBase), 0);
outb(LBA_LO_PORT(curBase), 0);
outb(CMD_REG_STATUS_PORT(curBase), IDENTIFY_DRIVE_CMD);
uint8_t status = ATA_PIO_ReadStatus(TRUE);
if(status == 0)return -1;
while(status & STATUS_BUSY != STATUS_BUSY)status = ATA_PIO_ReadStatus(TRUE); //Keep polling until the busy bit clears
uint8_t lba_mid = inb(LBA_MID_PORT(curBase));
uint8_t lba_hi = inb(LBA_HI_PORT(curBase));
if(lba_mid != 0 | lba_hi != 0)return -1;
while(1)
{
status = ATA_PIO_ReadStatus(TRUE);
if(status & STATUS_DRQ == STATUS_DRQ)break;
if(status & STATUS_ERR == STATUS_ERR)return -1;
}
//Read in 256 words and store them into the provided pointer
for(int i = 0; i < 256; i++)
{
result[i] = inl(DATA_PORT(curBase));
}
return 0;
}
//This function writes data on the LCD display
void LCD_Data(unsigned int data){
unsigned int temp=0;
EN_LOW();
DATA_PORT();
WRITE_DATA();
temp=data;
IO1PIN&=0xFC3FFFFF;
IO1PIN|=(temp & 0xF0) << 18;
EN_HI();
DelaymSec(1);
EN_LOW();
temp=data & 0x0F;
IO1PIN&=0xFC3FFFFF;
IO1PIN|=(temp) << 22;
EN_HI();
DelaymSec(1);
EN_LOW();
}
