uint8_t AF_Wave::open_filesys(void) {
/* open file system */
fs = fat16_open(partition);
if(!fs) {
return 0;
}
return 1;
}
int8_t sd_open()
{
sd_close();
/* setup sd card slot */
if(!sd_raw_init())
return SD_ERROR_INIT;
/* open first partition */
sd_partition = partition_open(sd_raw_read,
sd_raw_read_interval,
sd_raw_write,
sd_raw_write_interval,
0
);
if(!sd_partition)
{
/* If the partition did not open, assume the storage device
* is a "superfloppy", i.e. has no MBR.
*/
sd_partition = partition_open(sd_raw_read,
sd_raw_read_interval,
sd_raw_write,
sd_raw_write_interval,
-1
);
if(!sd_partition)
return SD_ERROR_PARTITION;
}
/* open file system */
sd_fs = fat16_open(sd_partition);
if(!sd_fs)
{
sd_close();
return SD_ERROR_FS;
}
/* open root directory */
struct fat16_dir_entry_struct directory;
fat16_get_dir_entry_of_path(sd_fs, "/", &directory);
sd_dd = fat16_open_dir(sd_fs, &directory);
if(!sd_dd)
{
sd_close();
return SD_ERROR_ROOTDIR;
}
return SD_ERROR_NONE;
}
void main()
{
int i = 0;
int x;
struct img_resource *r;
volatile unsigned int *num_clock_cycles = 0x86000000;
unsigned int **frame_start = 0x82000000;
unsigned int *start = 0x00600000;
int fat16_start;
struct fat16_handle h;
printf("Reading partition table... ");
fat16_start = fat16_find_partition();
if (fat16_start < 0)
{
puts("no FAT16 partition found!");
return;
}
printf("found starting at sector %d.\r\n", fat16_start);
printf("Opening FAT16 partition... ");
if (fat16_open(&h, fat16_start) < 0)
{
puts("FAT16 boot sector read failed!");
return;
}
puts("OK");
*frame_start = start;
r = img_load(&h, "LEFT_4 RES");
printf("in main...\r\n");
x = 0;
accel_fill(start, 0x80808080, 640*480);
while (1)
{
int y;
if ((i % 64) == 0)
printf("iters: %d, i %% 100 = %d, clock cycles: %d\r\n", i, ((unsigned int)i) % 100U, *num_clock_cycles);
for (y = 0; y < 448; y += 64)
accel_blit(start + y * 640 + x, r->pixels, r->w, r->h);
x += 16;
if (x == 512)
x = 0;
i++;
}
}
int main()
{
/* setup uart */
uart_init();
/* setup stdio */
uart_connect_stdio();
/* setup sd card slot */
if(!sd_raw_init())
{
#if DEBUG
printf_P(PSTR("MMC/SD initialization failed\n"));
#endif
return 1;
}
/* open first partition */
struct partition_struct* partition = partition_open(sd_raw_read,
sd_raw_read_interval,
sd_raw_write,
0);
if(!partition)
{
/* If the partition did not open, assume the storage device
* is a "superfloppy", i.e. has no MBR.
*/
partition = partition_open(sd_raw_read,
sd_raw_read_interval,
sd_raw_write,
-1
);
if(!partition)
{
#if DEBUG
printf_P(PSTR("opening partition failed\n"));
#endif
return 1;
}
}
/* open file system */
struct fat16_fs_struct* fs = fat16_open(partition);
if(!fs)
{
#if DEBUG
printf_P(PSTR("opening filesystem failed\n"));
#endif
return 1;
}
/* open root directory */
struct fat16_dir_entry_struct directory;
fat16_get_dir_entry_of_path(fs, "/", &directory);
struct fat16_dir_struct* dd = fat16_open_dir(fs, &directory);
if(!dd)
{
#if DEBUG
printf_P(PSTR("opening root directory failed\n"));
#endif
return 1;
}
/* provide a simple shell */
char buffer[24];
while(1)
{
/* print prompt */
uart_putc('>');
uart_putc(' ');
/* read command */
char* command = buffer;
if(read_line(command, sizeof(buffer)) < 1)
continue;
/* execute command */
if(strncmp_P(command, PSTR("cd "), 3) == 0)
{
command += 3;
if(command[0] == '\0')
continue;
/* change directory */
struct fat16_dir_entry_struct subdir_entry;
if(find_file_in_dir(fs, dd, command, &subdir_entry))
{
struct fat16_dir_struct* dd_new = fat16_open_dir(fs, &subdir_entry);
if(dd_new)
{
fat16_close_dir(dd);
dd = dd_new;
continue;
}
}
printf_P(PSTR("directory not found: %s\n"), command);
}
else if(strcmp_P(command, PSTR("ls")) == 0)
{
/* print directory listing */
struct fat16_dir_entry_struct dir_entry;
while(fat16_read_dir(dd, &dir_entry))
{
printf_P(PSTR("%10lu %s%c\n"),
dir_entry.file_size,
dir_entry.long_name,
(dir_entry.attributes & FAT16_ATTRIB_DIR) ? '/' : ' '
);
}
}
else if(strncmp_P(command, PSTR("cat "), 4) == 0)
{
command += 4;
if(command[0] == '\0')
continue;
/* search file in current directory and open it */
struct fat16_file_struct* fd = open_file_in_dir(fs, dd, command);
if(!fd)
{
printf_P(PSTR("error opening %s\n"), command);
continue;
}
/* print file contents */
uint8_t buffer[8];
uint32_t offset = 0;
while(fat16_read_file(fd, buffer, sizeof(buffer)) > 0)
{
printf_P(PSTR("%08lx: %02x %02x %02x %02x %02x %02x %02x %02x\n"),
offset,
buffer[0],
buffer[1],
buffer[2],
buffer[3],
buffer[4],
buffer[5],
buffer[6],
buffer[7]
);
offset += 8;
}
fat16_close_file(fd);
}
#if FAT16_WRITE_SUPPORT
else if(strncmp_P(command, PSTR("rm "), 3) == 0)
{
command += 3;
if(command[0] == '\0')
continue;
struct fat16_dir_entry_struct file_entry;
if(find_file_in_dir(fs, dd, command, &file_entry))
{
if(fat16_delete_file(fs, &file_entry))
continue;
}
printf_P(PSTR("error deleting file: %s\n"), command);
}
else if(strncmp_P(command, PSTR("touch "), 6) == 0)
{
command += 6;
if(command[0] == '\0')
continue;
struct fat16_dir_entry_struct file_entry;
if(!fat16_create_file(dd, command, &file_entry))
printf_P(PSTR("error creating file: %s\n"), command);
}
else if(strncmp_P(command, PSTR("write "), 6) == 0)
{
command += 6;
if(command[0] == '\0')
continue;
char* offset_value = command;
while(*offset_value != ' ' && *offset_value != '\0')
++offset_value;
if(*offset_value == ' ')
*offset_value++ = '\0';
else
continue;
/* search file in current directory and open it */
struct fat16_file_struct* fd = open_file_in_dir(fs, dd, command);
if(!fd)
{
printf_P(PSTR("error opening %s\n"), command);
continue;
}
int32_t offset = strtol(offset_value, 0, 0);
if(!fat16_seek_file(fd, &offset, FAT16_SEEK_SET))
{
printf_P(PSTR("error seeking on %s\n"), command);
fat16_close_file(fd);
continue;
}
/* read text from the shell and write it to the file */
uint8_t data_len;
while(1)
{
/* give a different prompt */
uart_putc('<');
uart_putc(' ');
/* read one line of text */
data_len = read_line(buffer, sizeof(buffer));
if(!data_len)
break;
/* write text to file */
if(fat16_write_file(fd, (uint8_t*) buffer, data_len) != data_len)
{
printf_P(PSTR("error writing to file\n"));
break;
}
}
fat16_close_file(fd);
}
#endif
#if SD_RAW_WRITE_BUFFERING
else if(strcmp_P(command, PSTR("sync")) == 0)
{
if(!sd_raw_sync())
printf_P(PSTR("error syncing disk\n"));
}
#endif
else
{
printf_P(PSTR("unknown command: %s\n"), command);
}
}
/* close file system */
fat16_close(fs);
/* close partition */
partition_close(partition);
return 0;
}
