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stmhal/main: Put /sd directory before /flash in sys.path. 

If the SD card is mounted then its libraries (ie those that are imported)
should override any in /flash.
This commit is contained in:
Damien George 2017-01-31 12:30:18 +11:00
parent 3667ee1b88
commit 80dfd65090
1 changed files with 22 additions and 14 deletions
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36
stmhal/main.c
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@ -168,7 +168,7 @@ static const char fresh_readme_txt[] =
;
// avoid inlining to avoid stack usage within main()
MP_NOINLINE STATIC void init_flash_fs(uint reset_mode) {
MP_NOINLINE STATIC bool init_flash_fs(uint reset_mode) {
// init the vfs object
fs_user_mount_t *vfs_fat = &fs_user_mount_flash;
vfs_fat->str = NULL;
@ -192,7 +192,7 @@ MP_NOINLINE STATIC void init_flash_fs(uint reset_mode) {
// success creating fresh LFS
} else {
printf("PYB: can't create flash filesystem\n");
return;
return false;
}
// set label
@ -223,7 +223,7 @@ MP_NOINLINE STATIC void init_flash_fs(uint reset_mode) {
// mount sucessful
} else {
printf("PYB: can't mount flash\n");
return;
return false;
}
// mount the flash device (there should be no other devices mounted at this point)
@ -259,9 +259,11 @@ MP_NOINLINE STATIC void init_flash_fs(uint reset_mode) {
sys_tick_wait_at_least(start_tick, 200);
led_state(PYB_LED_GREEN, 0);
}
return true;
}
STATIC void init_sdcard_fs(bool first_soft_reset) {
STATIC bool init_sdcard_fs(bool first_soft_reset) {
bool first_part = true;
for (int part_num = 1; part_num <= 4; ++part_num) {
// create vfs object
@ -308,12 +310,6 @@ STATIC void init_sdcard_fs(bool first_soft_reset) {
}
}
if (first_part) {
// TODO these should go before the /flash entries in the path
mp_obj_list_append(mp_sys_path, MP_OBJ_NEW_QSTR(MP_QSTR__slash_sd));
mp_obj_list_append(mp_sys_path, MP_OBJ_NEW_QSTR(MP_QSTR__slash_sd_slash_lib));
}
if (first_soft_reset) {
// use SD card as medium for the USB MSD
#if defined(USE_DEVICE_MODE)
@ -337,6 +333,9 @@ STATIC void init_sdcard_fs(bool first_soft_reset) {
if (first_part) {
printf("PYB: can't mount SD card\n");
return false;
} else {
return true;
}
}
@ -508,8 +507,6 @@ soft_reset:
mp_init();
mp_obj_list_init(mp_sys_path, 0);
mp_obj_list_append(mp_sys_path, MP_OBJ_NEW_QSTR(MP_QSTR_)); // current dir (or base dir of the script)
mp_obj_list_append(mp_sys_path, MP_OBJ_NEW_QSTR(MP_QSTR__slash_flash));
mp_obj_list_append(mp_sys_path, MP_OBJ_NEW_QSTR(MP_QSTR__slash_flash_slash_lib));
mp_obj_list_init(mp_sys_argv, 0);
// Initialise low-level sub-systems. Here we need to very basic things like
@ -552,15 +549,26 @@ soft_reset:
// Initialise the local flash filesystem.
// Create it if needed, mount in on /flash, and set it as current dir.
init_flash_fs(reset_mode);
bool mounted_flash = init_flash_fs(reset_mode);
bool mounted_sdcard = false;
#if MICROPY_HW_HAS_SDCARD
// if an SD card is present then mount it on /sd/
if (sdcard_is_present()) {
init_sdcard_fs(first_soft_reset);
mounted_sdcard = init_sdcard_fs(first_soft_reset);
}
#endif
// set sys.path based on mounted filesystems (/sd is first so it can override /flash)
if (mounted_sdcard) {
mp_obj_list_append(mp_sys_path, MP_OBJ_NEW_QSTR(MP_QSTR__slash_sd));
mp_obj_list_append(mp_sys_path, MP_OBJ_NEW_QSTR(MP_QSTR__slash_sd_slash_lib));
}
if (mounted_flash) {
mp_obj_list_append(mp_sys_path, MP_OBJ_NEW_QSTR(MP_QSTR__slash_flash));
mp_obj_list_append(mp_sys_path, MP_OBJ_NEW_QSTR(MP_QSTR__slash_flash_slash_lib));
}
// reset config variables; they should be set by boot.py
MP_STATE_PORT(pyb_config_main) = MP_OBJ_NULL;