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new 8f27a533a tinyusb/msc_fat_view: Add API to eject/insert medium
8f27a533a is described below
commit 8f27a533a7e3bc9174f41ee39fd37f3a99d05c34
Author: Jerzy Kasenberg <jerzy.kasenb...@codecoup.pl>
AuthorDate: Fri Mar 22 15:43:28 2024 +0100
tinyusb/msc_fat_view: Add API to eject/insert medium
msc_fat_view adds some predefined entries to root directory.
If application decides to add more entries after USB starts
and host system already read and cached some data
media eject/insert sequence can inform system that old
directory structure and FAT is not valid.
msc_fat_view_add_dir_entry() function will do it automatically
but it is also possible to report no medium with
msc_fat_view_media_eject() function
msc_fat_view_media_insert() will inform host system that media is present.
syscfg value MSC_FAT_VIEW_AUTO_INSERT when set to 1 will report
media as present during system init.
---
.../include/msc_fat_view/msc_fat_view.h | 19 ++++++++++++++
hw/usb/tinyusb/msc_fat_view/src/msc_fat_view.c | 29 +++++++++++++++++++---
hw/usb/tinyusb/msc_fat_view/syscfg.yml | 6 +++++
3 files changed, 51 insertions(+), 3 deletions(-)
diff --git a/hw/usb/tinyusb/msc_fat_view/include/msc_fat_view/msc_fat_view.h
b/hw/usb/tinyusb/msc_fat_view/include/msc_fat_view/msc_fat_view.h
index 61814487a..9b7f23cf3 100644
--- a/hw/usb/tinyusb/msc_fat_view/include/msc_fat_view/msc_fat_view.h
+++ b/hw/usb/tinyusb/msc_fat_view/include/msc_fat_view/msc_fat_view.h
@@ -48,8 +48,27 @@ typedef struct file_entry {
/**
* Add file handler to root folder.
*
+ * If medium was inserted this function will first eject media
+ * to make system aware that disk content has changed and reload
+ * is needed.
+ *
* @param file - File entry that will popup in root folder.
*/
void msc_fat_view_add_dir_entry(const file_entry_t *file);
+/**
+ * Eject media
+ *
+ * This function can be called before new root dir entries are added
+ * in application.
+ * Several entries can be added without generating too many disk ejected
+ * notification in host system.
+ */
+void msc_fat_view_media_eject(void);
+
+/**
+ * Insert media after all root entries are added.
+ */
+void msc_fat_view_media_insert(void);
+
#endif /* __MSC_FAT_VIEW_H__ */
diff --git a/hw/usb/tinyusb/msc_fat_view/src/msc_fat_view.c
b/hw/usb/tinyusb/msc_fat_view/src/msc_fat_view.c
index 31a519a2f..6fcedbcf6 100644
--- a/hw/usb/tinyusb/msc_fat_view/src/msc_fat_view.c
+++ b/hw/usb/tinyusb/msc_fat_view/src/msc_fat_view.c
@@ -219,12 +219,14 @@ static uint8_t root_dir_entry_count;
static scsi_cmd_type_t last_scsi_command;
-static enum {
+typedef enum {
MEDIUM_NOT_PRESENT,
REPORT_MEDIUM_CHANGE,
MEDIUM_RELOAD,
MEDIUM_PRESENT,
-} medium_state;
+} medium_state_t;
+
+static medium_state_t medium_state;
struct unallocated_write {
uint32_t first_sector;
@@ -915,10 +917,17 @@ void
msc_fat_view_add_dir_entry(const file_entry_t *file)
{
int entry_ix = root_dir_entry_count++;
+ medium_state_t state = medium_state;
+ if (state != MEDIUM_NOT_PRESENT) {
+ medium_state = MEDIUM_NOT_PRESENT;
+ }
root_dir[entry_ix].file = file;
root_dir[entry_ix].dir_slots = fat_dir_entry_slots(file->name);
MSC_FAT_VIEW_LOG_DEBUG("Added root entry %s\n", file->name);
+ if (state != MEDIUM_NOT_PRESENT) {
+ medium_state = MEDIUM_RELOAD;
+ }
}
void
@@ -1822,9 +1831,23 @@ tud_msc_scsi_cb(uint8_t lun, uint8_t const scsi_cmd[16],
void *buffer, uint16_t
}
void
-msc_fat_view_pkg_init(void)
+msc_fat_view_media_eject(void)
+{
+ medium_state = MEDIUM_NOT_PRESENT;
+}
+
+void
+msc_fat_view_media_insert(void)
{
medium_state = MEDIUM_RELOAD;
+}
+
+void
+msc_fat_view_pkg_init(void)
+{
+ if (MYNEWT_VAL(MSC_FAT_VIEW_AUTO_INSERT)) {
+ msc_fat_view_media_insert();
+ }
init_disk_data();
}
diff --git a/hw/usb/tinyusb/msc_fat_view/syscfg.yml
b/hw/usb/tinyusb/msc_fat_view/syscfg.yml
index de6d17751..34f0cb665 100644
--- a/hw/usb/tinyusb/msc_fat_view/syscfg.yml
+++ b/hw/usb/tinyusb/msc_fat_view/syscfg.yml
@@ -103,6 +103,12 @@ syscfg.defs:
Normally this if folder (not file) generated by Windows.
If this file is present Windows will not create folder saving time
for writes.
value: 0
+ MSC_FAT_VIEW_AUTO_INSERT:
+ description: >
+ If set to 1, media is reported as present during system init.
+ If set to 0, msc_fat_view_insert_media() function needs to be
called after
+ all root entries are added.
+ value: 1
MSC_FAT_VIEW_LOG_MOD:
description: 'Numeric module ID to use for MSC FAT view log messages.'
