mirror of
https://github.com/aotta/PicoPAC
synced 2024-11-21 08:05:05 -05:00
101 lines
2.6 KiB
C
101 lines
2.6 KiB
C
/*
|
|
// PicoPAC MultiCART by Andrea Ottaviani 2024
|
|
//
|
|
// VIDEOPAC multicart based on Raspberry Pico board -
|
|
//
|
|
// More info on https://github.com/aotta/
|
|
//
|
|
// parts of code are directly from the A8PicoCart project by Robin Edwards 2023
|
|
//
|
|
// Needs to be a release NOT debug build for the cartridge emulation to work
|
|
//
|
|
// Edit myboard.h depending on the type of flash memory on the pico clone//
|
|
//
|
|
// v. 1.0 2024-08-05 : Initial version for Pi Pico
|
|
//
|
|
*/
|
|
|
|
|
|
|
|
|
|
#include "ff.h"
|
|
#include "diskio.h"
|
|
#include "fatfs_disk.h"
|
|
|
|
#include <stdio.h>
|
|
#include "pico/stdlib.h"
|
|
#include "hardware/flash.h"
|
|
|
|
bool flashfs_is_mounted = false;
|
|
|
|
bool mount_fatfs_disk()
|
|
{
|
|
int err = flash_fs_mount();
|
|
if (err)
|
|
return false;
|
|
|
|
flashfs_is_mounted = true;
|
|
return true;
|
|
}
|
|
|
|
bool fatfs_is_mounted() { return flashfs_is_mounted; }
|
|
|
|
void create_fatfs_disk()
|
|
{
|
|
flash_fs_create();
|
|
flashfs_is_mounted = true;
|
|
|
|
// now create a fatfs on the flash_fs filesystem :-)
|
|
|
|
FATFS fs; /* Filesystem object */
|
|
FIL fil; /* File object */
|
|
FRESULT res; /* API result code */
|
|
BYTE work[FF_MAX_SS]; /* Work area (larger is better for processing time) */
|
|
|
|
/* Format the default drive with default parameters */
|
|
printf("making fatfs\n");
|
|
res = f_mkfs("", 0, work, sizeof work);
|
|
f_mount(&fs, "", 0);
|
|
f_setlabel("PicoPAC");
|
|
res = f_open(&fil, "WELCOME.TXT", FA_CREATE_NEW | FA_WRITE);
|
|
f_puts("PicoPAC\r\n(c)2024 AOtta\r\nDrag ROM files in here!\r\n", &fil);
|
|
f_close(&fil);
|
|
f_mount(0, "", 0);
|
|
}
|
|
|
|
uint32_t fatfs_disk_read(uint8_t* buff, uint32_t sector, uint32_t count)
|
|
{
|
|
// printf("fatfs_disk_read sector=%d, count=%d\n", sector, count);
|
|
if (!flashfs_is_mounted) return RES_ERROR;
|
|
if (sector < 0 || sector >= SECTOR_NUM)
|
|
return RES_PARERR;
|
|
|
|
/* copy data to buffer */
|
|
for (int i=0; i<count; i++)
|
|
flash_fs_read_FAT_sector(sector + i, buff + (i*SECTOR_SIZE));
|
|
return RES_OK;
|
|
}
|
|
|
|
uint32_t fatfs_disk_write(const uint8_t* buff, uint32_t sector, uint32_t count)
|
|
{
|
|
// printf("fatfs_disk_write sector=%d, count=%d\n", sector, count);
|
|
if (!flashfs_is_mounted) return RES_ERROR;
|
|
if (sector < 0 || sector >= SECTOR_NUM)
|
|
return RES_PARERR;
|
|
|
|
/* copy data to buffer */
|
|
for (int i=0; i<count; i++) {
|
|
flash_fs_write_FAT_sector(sector + i, buff + (i*SECTOR_SIZE));
|
|
// verify
|
|
if (!flash_fs_verify_FAT_sector(sector + i, buff + (i*SECTOR_SIZE))) {
|
|
printf("VERIFY ERROR!");
|
|
return RES_ERROR;
|
|
}
|
|
}
|
|
return RES_OK;
|
|
}
|
|
|
|
void fatfs_disk_sync()
|
|
{
|
|
flash_fs_sync();
|
|
} |