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Merge SD stuff into fusee-secondary. Switch diskio to single-sector reads temporarily

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This commit is contained in:
Michael Scire 2018-05-04 11:47:05 -06:00
parent 299b020ecc
commit 4199be2460
42 changed files with 27485 additions and 172 deletions
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66
fusee/fusee-secondary/src/sd_utils.c
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@ -1,11 +1,65 @@
#include "sd_utils.h"
#include "hwinit.h"
#include "sdmmc.h"
#include "lib/printk.h"
#include "ff.h"
/* This is used by diskio.h. */
struct mmc sd_mmc;
FATFS sd_fs;
static int initialized_sd = 0;
static int mounted_sd = 0;
void save_sd_state(void **mmc, void **ff) {
*mmc = &sd_mmc;
*ff = &ff;
}
void resume_sd_state(void *mmc, void *ff) {
sd_mmc = *(struct mmc *)mmc;
sd_fs = *(FATFS *)ff;
initialized_sd = 1;
mounted_sd = 1;
}
int initialize_sd(void) {
if (initialized_sd) {
return 1;
}
mc_enable_ahb_redirect();
if (sdmmc_init(&sd_mmc, SWITCH_MICROSD) == 0) {
printk("Initialized SD card!\n");
initialized_sd = 1;
}
return initialized_sd;
}
int mount_sd(void) {
if (mounted_sd) {
return 1;
}
if (f_mount(&sd_fs, "", 1) == FR_OK) {
printk("Mounted SD card!\n");
mounted_sd = 1;
}
return mounted_sd;
}
size_t read_sd_file(void *dst, size_t dst_size, const char *filename) {
/* TODO: Implement this function. */
(void)(dst);
(void)(dst_size);
(void)(filename);
if (!initialized_sd && initialize_sd() == 0) {
return 0;
}
if (!mounted_sd && mount_sd() == 0) {
return 0;
}
/* Fail, because this function is unimplemented. */
return 0;
FIL f;
if (f_open(&f, filename, FA_READ) != FR_OK) {
return 0;
}
UINT br;
int res = f_read(&f, dst, dst_size, &br);
f_close(&f);
return res == FR_OK ? (int)br : 0;
}