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Em mới bắt đầu học lập trình PIC nên còn non lắm. 
Đang làm đề tài giao tiếp thẻ nhớ MMC với PIC, mà khi lập trình bằng MikroC dịch ra thì mô phỏng toàn bị không nhận được thẻ. Vì vậy viết lên đây mong mọi người chỉ giúp lỗi sai 
Code:
// Ket noi voi LCD module
sbit LCD_RS at RB2_bit;
sbit LCD_EN at RB3_bit;
sbit LCD_D4 at RB4_bit;
sbit LCD_D5 at RB5_bit;
sbit LCD_D6 at RB6_bit;
sbit LCD_D7 at RB7_bit;
sbit LCD_RS_Direction at TRISB2_bit;
sbit LCD_EN_Direction at TRISB3_bit;
sbit LCD_D4_Direction at TRISB4_bit;
sbit LCD_D5_Direction at TRISB5_bit;
sbit LCD_D6_Direction at TRISB6_bit;
sbit LCD_D7_Direction at TRISB7_bit;
// Ket noi MMC
sbit Mmc_Chip_Select at RC2_bit;
sbit Mmc_Chip_Select_Direction at TRISC2_bit;
// Text hien thi len LCD
char txt1[] = "MMC MODULE";
char txt2[] = "TRINH VAN LUONG";
char txt3[] = "BAI MO PHONG";
char txt4[] = "NGAY: 19/9/2014";
char txt5[] = "WRITING...";
char txt6[] = "LPG:";
char err_txt[20] = "Not FAT16 format";
// Variable
char cont;
char filename[14] = "FILE_00x.TXT";
char first_cont[] = "KET QUA DO: \n\r";
unsigned int adc_rs;
long tong;
char tmp[8];
float kq, ch;
unsigned int gtri;
// Ham con
char New_Text(char *txt)
{
int i, j=0;
char tem[12];
for(i=0;i<=sizeof(txt);i++)
{
tem[i]=txt[i];
j++;
}
tem[j] = 0x0D; // Them ky tu xuong dong
j++;
tem[j] = 0x0A; // Them ky tu tao dong moi
j++;
tem[j] = '\0';
return tem;
}
void Get_Tong()
{
tong = (long)adc_rs*5000;
tong = tong/1023;
kq = tong/1000;
ch = (tong/100)%10;
kq += ch*0.1;
ch = (tong/10)%10;
kq += ch*0.01;
}
void Get_ADC0()
{
adc_rs = ADC_Read(0);
Get_tong();
gtri= 1.5*(1192*kq*kq*kq - 82.77*kq*kq + 140.1*kq + 1.215)/2 - 11;
if(gtri<25.1)
{
PORTD.F4 = 1; // Bao den Blue;
Delay_ms(50);
PORTC.F0 = 0;
}
if((gtri>=25.1) && (gtri<50.1))
{
PORTD.F5 = 1; // Bao den Green;
Delay_ms(50);
PORTC.F0 = 0;
}
if((gtri>=50.1) && (gtri<100.1))
{
PORTD.F6 = 1; // Bao den Vang
Delay_ms(50);
PORTC.F0 = 0;
}
if(gtri>100.1)
{
PORTD.F7 = 1; // Bao den Do
Delay_ms(50);
PORTC.F0 = 1; // Ru' coi
}
}
void M_Create_File(char cont) { // Ham tao file moi
int i;
filename[7] = '1'; // Ten file: FILE_00A.txt
//A:
i = Mmc_Fat_Init(); // Khoi dong FAT
Delay_ms(20);
if (i == 0)
{
SPI1_Init_Advanced(_SPI_MASTER_OSC_DIV4, _SPI_DATA_SAMPLE_MIDDLE, _SPI_CLK_IDLE_LOW, _SPI_LOW_2_HIGH); // Set high speed
if(Mmc_Fat_Exists(&filename) == 0)
{
Lcd_Cmd(_LCD_CLEAR);
Lcd_Out(1,1, "Creat New File");
Mmc_Fat_Set_File_Date(2014, 8, 30, 9, 0, 0);
Mmc_Fat_Assign(&filename, 0x80); // Tim 1 file da ton tai hoac tao mot file moi
Mmc_Fat_Rewrite();
Mmc_Fat_Write(first_cont, sizeof(first_cont));
Delay_ms(50);
}
else
{
Lcd_Cmd(_LCD_CLEAR);
Lcd_Out(1,1, "Saving...");
Mmc_Fat_Set_File_Date(2014, 8, 19, 9, 0, 0); // Set file date & time info
Mmc_Fat_Assign(&filename, 0); // Kiem tra FILE_00B.txt
Mmc_Fat_Append(); // Xac dinh che do them noi dung // Do dai data
Mmc_Fat_Write(cont, sizeof(cont)); // Write data to assigned file
Delay_ms(50);
}
}
if(i == 1)
{
Lcd_Cmd(_LCD_CLEAR);
Lcd_Out(1,1,err_txt);
Lcd_Out(2,1,"Formatting...");
Delay_ms(50);
Mmc_Fat_QuickFormat("MMCCard");
i = Mmc_Fat_Init();
//goto A;
}
else
{
Lcd_Out(1,1, " No MMC Card! ");
}
}
// Ham chinh
void main() {
int mod;
// ADCON0 = 0b00000011; // Set Chanel 0, ADC enable
ADCON1 = 0b00001001;
ADCON2 = 0xA6; // Set tan so lam viec, thoi gian thu thap
RB0_bit = 0;
RB1_bit = 0;
RC7_bit = 0;
TRISB1_bit = 0; //clk
TRISB0_bit = 0; //sdo
TRISC7_bit = 1; //sdi
Lcd_Init();
Lcd_Cmd(_LCD_CLEAR); // Clear display
Lcd_Cmd(_LCD_CURSOR_OFF); // Cursor off
Lcd_Out(1,4,txt1);
Lcd_Out(2,1,txt2);
Delay_ms(2000);
Lcd_Cmd(_LCD_CLEAR);
Lcd_Out(1,1,txt3);
Lcd_Out(2,1,txt4);
Delay_ms(2000);
Lcd_Cmd(_LCD_CLEAR);
SPI1_Init_Advanced(_SPI_MASTER_OSC_DIV64, _SPI_DATA_SAMPLE_MIDDLE, _SPI_CLK_IDLE_LOW, _SPI_LOW_2_HIGH); // Set low speed
mod = Mmc_Init();
if(mod == 0)
{
//C:
Lcd_Cmd(_LCD_CLEAR);
Lcd_Out(1,1, "Card detected");
Delay_ms(500);
while(mod == 0)
{
Get_ADC0();
Lcd_Cmd(_LCD_CLEAR);
Lcd_Out(2,1, txt6);
IntToStr(gtri, tmp);
Lcd_Out(2,6, tmp);
M_Create_File(New_Text(&tmp));
Delay_ms(1000);
}
}
if(mod == 1)
{
while(mod)
{
Get_ADC0();
Lcd_Cmd(_LCD_CLEAR);
Lcd_Out(1,1, "No Card detected");
Lcd_Out(2,1, txt6);
IntToStr(gtri, tmp);
Lcd_Out(2,6, tmp);
Delay_ms(1000);
if (Mmc_Init()==0){ mod = 0;}
}
//goto C;
}
}
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