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Merge pull request #2606 from aramcon-badge/usb-remount-fix

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Fix to allow remount when usb enabled but not msc
This commit is contained in:
Scott Shawcroft 2020-02-12 10:33:15 -08:00 committed by GitHub
commit 8e8eb07791
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3 changed files with 11 additions and 4 deletions
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4
shared-module/storage/__init__.c
View File

@ -149,9 +149,7 @@ void common_hal_storage_remount(const char *mount_path, bool readonly, bool disa
}
#ifdef USB_AVAILABLE
// TODO(dhalbert): is this is a good enough check? It checks for
// CDC enabled. There is no "MSC enabled" check.
if (usb_enabled()) {
if (!usb_msc_ejected()) {
mp_raise_RuntimeError(translate("Cannot remount '/' when USB is active."));
}
#endif

10
supervisor/shared/usb/usb_msc_flash.c
View File

@ -39,7 +39,7 @@
#define MSC_FLASH_BLOCK_SIZE 512
static bool ejected[1];
static bool ejected[1] = {true};
void usb_msc_mount(void) {
// Reset the ejection tracking every time we're plugged into USB. This allows for us to battery
@ -53,6 +53,14 @@ void usb_msc_umount(void) {
}
bool usb_msc_ejected(void) {
bool all_ejected = true;
for (uint8_t i = 0; i < sizeof(ejected); i++) {
all_ejected &= ejected[i];
}
return all_ejected;
}
// The root FS is always at the end of the list.
static fs_user_mount_t* get_vfs(int lun) {
// TODO(tannewt): Return the mount which matches the lun where 0 is the end

1
supervisor/usb.h
View File

@ -44,5 +44,6 @@ void usb_init(void);
// Propagate plug/unplug events to the MSC logic.
void usb_msc_mount(void);
void usb_msc_umount(void);
bool usb_msc_ejected(void);
#endif // MICROPY_INCLUDED_SUPERVISOR_USB_H