add psram tinyusb drive

main/tusb_composite_main.c

@@ -7,9 +7,11 @@
 #include <errno.h>
 #include <dirent.h>
 #include <sys/stat.h>
+#include "esp_heap_caps.h"
 #include "esp_partition.h"
 #include "esp_check.h"
 #include "tinyusb.h"
+#include "tusb_msc_psram.h"
 #include "tusb_msc_storage.h"
 #include "tusb_cdc_acm.h"
 
@@ -92,31 +94,41 @@ static void file_operations(void)
     ESP_LOGI(TAG, "Read from file: '%s'", line);
 }
 
-static esp_err_t storage_init_spiflash(wl_handle_t *wl_handle)
-{
-    ESP_LOGI(TAG, "Initializing wear levelling");
+// static esp_err_t storage_init_spiflash(wl_handle_t *wl_handle)
+// {
+//     ESP_LOGI(TAG, "Initializing wear levelling");
 
-    const esp_partition_t *data_partition = esp_partition_find_first(ESP_PARTITION_TYPE_DATA, ESP_PARTITION_SUBTYPE_DATA_FAT, NULL);
-    if (data_partition == NULL) {
-        ESP_LOGE(TAG, "Failed to find FATFS partition. Check the partition table.");
-        return ESP_ERR_NOT_FOUND;
-    }
+//     const esp_partition_t *data_partition = esp_partition_find_first(ESP_PARTITION_TYPE_DATA, ESP_PARTITION_SUBTYPE_DATA_FAT, NULL);
+//     if (data_partition == NULL) {
+//         ESP_LOGE(TAG, "Failed to find FATFS partition. Check the partition table.");
+//         return ESP_ERR_NOT_FOUND;
+//     }
 
-    return wl_mount(data_partition, wl_handle);
-}
+//     return wl_mount(data_partition, wl_handle);
+// }
 
 void app_main(void)
 {
     ESP_LOGI(TAG, "Initializing storage...");
 
-    static wl_handle_t wl_handle = WL_INVALID_HANDLE;
-    ESP_ERROR_CHECK(storage_init_spiflash(&wl_handle));
+    uint8_t* const psram_fs_mem = heap_caps_malloc(4*1024*1024, MALLOC_CAP_SPIRAM);
 
-    const tinyusb_msc_spiflash_config_t config_spi = {
-        .wl_handle = wl_handle
+    const tinyusb_msc_psram_config_t config_psram = {
+        .memory=psram_fs_mem,
+        .memory_size = 4*1024*1024
     };
-    ESP_ERROR_CHECK(tinyusb_msc_storage_init_spiflash(&config_spi));
-    ESP_ERROR_CHECK(tinyusb_msc_storage_mount(BASE_PATH));
+
+    ESP_ERROR_CHECK(tinyusb_msc_storage_init_psram(&config_psram));
+    ESP_ERROR_CHECK(tinyusb_msc_psram_mount(BASE_PATH));
+
+    // static wl_handle_t wl_handle = WL_INVALID_HANDLE;
+    // ESP_ERROR_CHECK(storage_init_spiflash(&wl_handle));
+
+    // const tinyusb_msc_spiflash_config_t config_spi = {
+    //     .wl_handle = wl_handle
+    // };
+    // ESP_ERROR_CHECK(tinyusb_msc_storage_init_spiflash(&config_spi));
+    // ESP_ERROR_CHECK(tinyusb_msc_storage_mount(BASE_PATH));
     file_operations();
 
     ESP_LOGI(TAG, "USB Composite initialization");

main/tusb_msc_psram.h

@@ -0,0 +1,126 @@
+#pragma once
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <stddef.h>
+#include <stdint.h>
+#include <tusb_msc_storage.h>
+
+/**
+ * @brief Configuration structure for psram initialization
+ *
+ * User configurable parameters that are used while
+ * initializing the PSRAM media.
+ */
+typedef struct {
+    uint8_t* memory; /*!< pointer to memory in PSRAM */
+    size_t memory_size; /*!< requested size. note: allocated file system may be smaller due to sector size */
+    tusb_msc_callback_t callback_mount_changed;     /*!< Pointer to the function callback that will be delivered AFTER mount/unmount operation is successfully finished */
+    tusb_msc_callback_t callback_premount_changed;  /*!< Pointer to the function callback that will be delivered BEFORE mount/unmount operation is started */
+    const esp_vfs_fat_mount_config_t mount_config; /*!< FATFS mount config */
+} tinyusb_msc_psram_config_t;
+
+
+/**
+ * @brief Register storage type psram with tinyusb driver
+ *
+ * @param config pointer to the psram configuration
+ * @return esp_err_t
+ *       - ESP_OK, if success;
+ *       - ESP_ERR_NO_MEM, if there was no memory to allocate storage components;
+ */
+esp_err_t tinyusb_msc_storage_init_psram(const tinyusb_msc_psram_config_t *config);
+
+
+/**
+ * @brief Deregister storage with tinyusb driver and frees the memory
+ *
+ */
+void tinyusb_msc_psram_deinit(void);
+
+/**
+ * @brief Register a callback invoking on MSC event. If the callback had been
+ *        already registered, it will be overwritten
+ *
+ * @param event_type - type of registered event for a callback
+ * @param callback  - callback function
+ * @return esp_err_t - ESP_OK or ESP_ERR_INVALID_ARG
+ */
+esp_err_t tinyusb_msc_register_callback(tinyusb_msc_event_type_t event_type,
+                                        tusb_msc_callback_t callback);
+
+
+/**
+ * @brief Unregister a callback invoking on MSC event.
+ *
+ * @param event_type - type of registered event for a callback
+ * @return esp_err_t - ESP_OK or ESP_ERR_INVALID_ARG
+ */
+esp_err_t tinyusb_msc_unregister_callback(tinyusb_msc_event_type_t event_type);
+
+/**
+ * @brief Mount the storage partition locally on the firmware application.
+ *
+ * Get the available drive number. Register spi flash partition.
+ * Connect POSIX and C standard library IO function with FATFS.
+ * Mounts the partition.
+ * This API is used by the firmware application. If the storage partition is
+ * mounted by this API, host (PC) can't access the storage via MSC.
+ * When this function is called from the tinyusb callback functions, care must be taken
+ * so as to make sure that user callbacks must be completed within a
+ * specific time. Otherwise, MSC device may re-appear again on Host.
+ *
+ * @param base_path  path prefix where FATFS should be registered
+ * @return esp_err_t
+ *       - ESP_OK, if success;
+ *       - ESP_ERR_NOT_FOUND if the maximum count of volumes is already mounted
+ *       - ESP_ERR_NO_MEM if not enough memory or too many VFSes already registered;
+ */
+esp_err_t tinyusb_msc_psram_mount(const char *base_path);
+
+/**
+ * @brief Unmount the storage partition from the firmware application.
+ *
+ * Unmount the partition. Unregister diskio driver.
+ * Unregister the SPI flash partition.
+ * Finally, Un-register FATFS from VFS.
+ * After this function is called, storage device can be seen (recognized) by host (PC).
+ * When this function is called from the tinyusb callback functions, care must be taken
+ * so as to make sure that user callbacks must be completed within a specific time.
+ * Otherwise, MSC device may not appear on Host.
+ *
+ * @return esp_err_t
+ *      - ESP_OK on success
+ *      - ESP_ERR_INVALID_STATE if FATFS is not registered in VFS
+ */
+esp_err_t tinyusb_msc_psram_unmount(void);
+
+/**
+ * @brief Get number of sectors in storage media
+ *
+ * @return usable size, in bytes
+ */
+uint32_t tinyusb_msc_psram_get_sector_count(void);
+
+/**
+ * @brief Get sector size of storage media
+ *
+ * @return sector count
+ */
+uint32_t tinyusb_msc_psram_get_sector_size(void);
+
+/**
+ * @brief Get status if storage media is exposed over USB to Host
+ *
+ * @return bool
+ *      - true, if the storage media is exposed to Host
+ *      - false, if the stoarge media is mounted on application (not exposed to Host)
+ */
+bool tinyusb_msc_psram_in_use_by_usb_host(void);
+
+
+#ifdef __cplusplus
+}
+#endif

sdkconfig.defaults

@@ -5,6 +5,7 @@ CONFIG_IDF_TARGET="esp32s3"
 CONFIG_ESPTOOLPY_FLASHSIZE_16MB=y
 CONFIG_PARTITION_TABLE_CUSTOM=y
 CONFIG_SPIRAM=y
+CONFIG_SPIRAM_MODE_OCT=y
 CONFIG_SPIRAM_USE_CAPS_ALLOC=y
 CONFIG_WL_SECTOR_SIZE_512=y
 CONFIG_WL_SECTOR_MODE_PERF=y