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stm32/main: Support SD cards without a partition table.

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Signed-off-by: Damien George <damien@micropython.org>
This commit is contained in:
Damien George 2022-03-17 17:09:01 +11:00
parent 75d2bfcccf
commit 63c7593df6
1 changed files with 11 additions and 2 deletions
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11
ports/stm32/main.c
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@ -233,7 +233,7 @@ MP_NOINLINE STATIC bool init_flash_fs(uint reset_mode) {
#if MICROPY_HW_SDCARD_MOUNT_AT_BOOT
STATIC bool init_sdcard_fs(void) {
bool first_part = true;
for (int part_num = 1; part_num <= 4; ++part_num) {
for (int part_num = 1; part_num <= 5; ++part_num) {
// create vfs object
fs_user_mount_t *vfs_fat = m_new_obj_maybe(fs_user_mount_t);
mp_vfs_mount_t *vfs = m_new_obj_maybe(mp_vfs_mount_t);
@ -241,7 +241,16 @@ STATIC bool init_sdcard_fs(void) {
break;
}
vfs_fat->blockdev.flags = MP_BLOCKDEV_FLAG_FREE_OBJ;
if (part_num == 5) {
if (!first_part) {
break;
}
// partitions 1-4 couldn't be mounted, so try FATFS auto-detect mode
// which will work if there is no partition table, just a filesystem
sdcard_init_vfs(vfs_fat, 0);
} else {
sdcard_init_vfs(vfs_fat, part_num);
}
// try to mount the partition
FRESULT res = f_mount(&vfs_fat->fatfs);