【iCore4 双核心板_ARM】例程十四：FATFS实验——文件操作

int main(void)
{
int i,j;
FIL file;
FATFS fatfs;
static FRESULT res;
unsigned char write_buffer[512];
unsigned char read_buffer[512];
unsigned int counter;

system_clock.initialize();
led.initialize();
usart6.initialize(115200);
usart6.printf("\x0c");
usart6.printf("\033[1;32;40m");
usart6.printf("\r\nHello, I am iCore4!\r\n\r\n");
if(BSP_SD_Init() != 0){
usart6.printf("SD ERROR!\r\n");
while(1){
LED_RED_ON;
HAL_Delay(500);
LED_RED_OFF;
HAL_Delay(500);
}
}else{
usart6.printf("SD Initialize successful!\r\n");
}

HAL_Delay(500);
res = f_mount(&fatfs,"0:",1);
if(res != RES_OK){
usart6.printf("f_mount error!\r\n");
while(1){
LED_RED_ON;
HAL_Delay(500);
LED_RED_OFF;
HAL_Delay(500);
}
}else{
usart6.printf("f_mount successful!\r\n");
}

res = f_open(&file,"0:/SD¿¨²âÊÔ.txt",FA_READ | FA_WRITE | FA_OPEN_ALWAYS);//´ò¿ªÇý¶¯Æ÷0ÉϵÄÔ´Îļþ
if(res != RES_OK){
usart6.printf("f_open error!\r\n");
while(1){
HAL_Delay(500);
LED_RED_ON;
HAL_Delay(500);
LED_RED_OFF;
}
}else{
usart6.printf("f_open successful!\r\n");
}

res = f_lseek(&file,0);
if(res != RES_OK){
usart6.printf("f_lseek error!\r\n");
while(1){
HAL_Delay(500);
LED_RED_ON;
HAL_Delay(500);
LED_RED_OFF;
}
}else{
usart6.printf("f_lseek successful!\r\n");
}

for(i = 0;i < 512;i++){
write_buffer[i] = i % 256;
}

res = f_write(&file,write_buffer,512,&counter);                       //½«»º³åÆ÷ÖеÄÄÚÈÝдÈëÔ´Îļþ
if(res != RES_OK || counter != 512){
usart6.printf("f_write error!\r\n");
while(1){
HAL_Delay(500);
LED_RED_ON;
HAL_Delay(500);
LED_RED_OFF;
}
}else{
usart6.printf("f_write successful!\r\n");
}

res = f_lseek(&file,0);
if(res != RES_OK){
usart6.printf("f_lseek error!\r\n");
while(1){
HAL_Delay(500);
LED_RED_ON;
HAL_Delay(500);
LED_RED_OFF;
}
}else{
usart6.printf("f_lseek successful!\r\n");
}

res = f_read(&file,read_buffer,512,&counter);
if(res != RES_OK || counter != 512){
usart6.printf("f_read error!\r\n");
while(1){
HAL_Delay(500);
LED_RED_ON;
HAL_Delay(500);
LED_RED_OFF;
}
}else{
usart6.printf("f_read successful!\r\n");
}
f_close(&file);

usart6.printf("read data:\r\n");
for(i = 0;i < 32;i++){
for(j = 0; j < 16; j ++)
usart6.printf(" %02X",read_buffer[i*16+j]);
usart6.printf("\r\n");
}

while(1){
LED_GREEN_ON;
HAL_Delay(500);
LED_GREEN_OFF;
HAL_Delay(500);
}
}