From 3e5830bc60a14e5c7a60aa1af25cd428fbd9fb1a Mon Sep 17 00:00:00 2001
From: Jackson Ming Hu <jackson@smartguide.com.au>
Date: Wed, 10 Jan 2024 14:43:02 +1100
Subject: [PATCH] sdmmc: implement mount check API for SDMMC

---
 include/esp_littlefs.h | 13 +++++++++++++
 src/esp_littlefs.c     | 13 +++++++++++++
 2 files changed, 26 insertions(+)

diff --git a/include/esp_littlefs.h b/include/esp_littlefs.h
index 9d63d8d..7c2bb40 100644
--- a/include/esp_littlefs.h
+++ b/include/esp_littlefs.h
@@ -112,6 +112,19 @@ bool esp_littlefs_mounted(const char* partition_label);
  */
 bool esp_littlefs_partition_mounted(const esp_partition_t* partition);
 
+#ifdef CONFIG_LITTLEFS_SDMMC_SUPPORT
+/**
+ * Check if littlefs is mounted
+ *
+ * @param sdcard  SD card to check.
+ *
+ * @return
+ *          - true    if mounted
+ *          - false   if not mounted
+ */
+bool esp_littlefs_sdmmc_mounted(sdmmc_card_t *sdcard);
+#endif
+
 /**
  * Format the littlefs partition
  *
diff --git a/src/esp_littlefs.c b/src/esp_littlefs.c
index 188a3c4..f5fd7ba 100644
--- a/src/esp_littlefs.c
+++ b/src/esp_littlefs.c
@@ -320,6 +320,17 @@ bool esp_littlefs_partition_mounted(const esp_partition_t* partition) {
     return _efs[index]->cache_size > 0;
 }
 
+#ifdef CONFIG_LITTLEFS_SDMMC_SUPPORT
+bool esp_littlefs_sdmmc_mounted(sdmmc_card_t *sdcard)
+{
+    int index;
+    esp_err_t err = esp_littlefs_by_sdmmc_handle(sdcard, &index);
+
+    if(err != ESP_OK) return false;
+    return _efs[index]->cache_size > 0;
+}
+#endif
+
 esp_err_t esp_littlefs_info(const char* partition_label, size_t *total_bytes, size_t *used_bytes){
     int index;
     esp_err_t err;
@@ -342,6 +353,7 @@ esp_err_t esp_littlefs_partition_info(const esp_partition_t* partition, size_t *
     return ESP_OK;
 }
 
+#ifdef CONFIG_LITTLEFS_SDMMC_SUPPORT
 esp_err_t esp_littlefs_sdmmc_info(sdmmc_card_t *sdcard, size_t *total_bytes, size_t *used_bytes)
 {
     int index;
@@ -353,6 +365,7 @@ esp_err_t esp_littlefs_sdmmc_info(sdmmc_card_t *sdcard, size_t *total_bytes, siz
 
     return ESP_OK;
 }
+#endif
 
 esp_err_t esp_vfs_littlefs_register(const esp_vfs_littlefs_conf_t * conf)
 {