#include <mega32.h>
#include <stdio.h>
#include <delay.h>
#include <lcd.h>
#asm
.equ __lcd_port=0x1B
#endasm
#include <ff.h>
#define T1_OVF_FREQ 100
#define T1_PRESC 1024L
#define T1_INIT (0x10000L-(_MCU_CLOCK_FREQUENCY_/(T1_PRESC*T1_OVF_FREQ)))
FRESULT res;
unsigned int nbytes;
FATFS drive;
FIL file;
char path1[]="0:/hamid.txt";
unsigned char buffer[15];
unsigned char lcd_buf[15];
/* error message list */
flash char * flash error_msg[]=
{
"", /* not used */
"FR_DISK_ERR",
"FR_INT_ERR",
"FR_INT_ERR",
"FR_NOT_READY",
"FR_NO_FILE",
"FR_NO_PATH",
"FR_INVALID_NAME",
"FR_DENIED",
"FR_EXIST",
"FR_INVALID_OBJECT",
"FR_WRITE_PROTECTED",
"FR_INVALID_DRIVE",
"FR_NOT_ENABLED",
"FR_NO_FILESYSTEM",
"FR_MKFS_ABORTED",
"FR_TIMEOUT"
};
/* display error message and stop */
void error(FRESULT res)
{
if ((res>=FR_DISK_ERR) && (res<=FR_TIMEOUT))sprintf(lcd_buf,"%p",error_msg[res]);
lcd_clear();
lcd_puts(lcd_buf);
delay_ms(2000);
}
interrupt [TIM1_OVF] void timer_comp_isr(void)
{
/* re-initialize Timer1 */
TCNT1H=T1_INIT>>8;
TCNT1L=T1_INIT&0xFF;
/* card access low level timing function */
disk_timerproc();
}
void main(void)
{
TCCR1A=0x00;
TCCR1B=(1<<CS12)|(1<<CS10);
TCNT1H=T1_INIT>>8;
TCNT1L=T1_INIT&0xFF;
TIMSK=1<<TOIE1;
#asm("sei")
lcd_init(16);
delay_ms(1000);
lcd_gotoxy(0,0);lcd_putsf(" DMF313.ir");delay_ms(1000);lcd_clear();
lcd_clear();
if ((res=f_mount(0,&drive))==FR_OK)lcd_putsf("FAT mounted = OK");
else error(res);
delay_ms(2000);
lcd_clear();
if ((res=f_open(&file,path1,FA_READ))==FR_OK)lcd_putsf("File open hamid");
else error(res);
delay_ms(2000);
lcd_clear();
if ((res=f_read(&file,buffer,14,&nbytes))==FR_OK)
{
lcd_putsf("Reading Data");
delay_ms(2000);
lcd_clear();
lcd_puts(buffer);
}
else error(res);
delay_ms(2000);
lcd_clear();
if ((res=f_close(&file))==FR_OK)lcd_putsf("File closed");
else error(res);
delay_ms(2000);
}
دیدگاه