From 3c2ae7c30f055078cca17ca5988f0118f0bc0471 Mon Sep 17 00:00:00 2001
From: SPRESENSE <41312067+SPRESENSE@users.noreply.github.com>
Date: Fri, 10 Feb 2023 10:36:15 +0900
Subject: [PATCH] GNSS: Add new function to remove the backup file

---
 .../spresense/1.0.0/libraries/GNSS/GNSS.cpp         | 13 +++++++++++++
 .../hardware/spresense/1.0.0/libraries/GNSS/GNSS.h  |  6 ++++++
 2 files changed, 19 insertions(+)

diff --git a/Arduino15/packages/SPRESENSE/hardware/spresense/1.0.0/libraries/GNSS/GNSS.cpp b/Arduino15/packages/SPRESENSE/hardware/spresense/1.0.0/libraries/GNSS/GNSS.cpp
index ed08d19f0..19bec76e0 100644
--- a/Arduino15/packages/SPRESENSE/hardware/spresense/1.0.0/libraries/GNSS/GNSS.cpp
+++ b/Arduino15/packages/SPRESENSE/hardware/spresense/1.0.0/libraries/GNSS/GNSS.cpp
@@ -858,6 +858,19 @@ int SpGnss::saveEphemeris(void)
     return ret;
 }
 
+/**
+ * @brief Remove the backup data stored in the Flash
+ * @return 0 if success, -1 if failure
+ */
+int SpGnss::removeEphemeris(void)
+{
+#ifdef CONFIG_CXD56_GNSS_BACKUP_FILENAME
+    return unlink(CONFIG_CXD56_GNSS_BACKUP_FILENAME);
+#else
+    return -1;
+#endif
+}
+
 /**
  * @brief Get the QZQSM DC report data
  * @return the pointer to DC Report structure if valid, otherwise NULL
diff --git a/Arduino15/packages/SPRESENSE/hardware/spresense/1.0.0/libraries/GNSS/GNSS.h b/Arduino15/packages/SPRESENSE/hardware/spresense/1.0.0/libraries/GNSS/GNSS.h
index ff03f3389..b74104d07 100644
--- a/Arduino15/packages/SPRESENSE/hardware/spresense/1.0.0/libraries/GNSS/GNSS.h
+++ b/Arduino15/packages/SPRESENSE/hardware/spresense/1.0.0/libraries/GNSS/GNSS.h
@@ -437,6 +437,12 @@ class SpGnss
      */
     int saveEphemeris(void);
 
+    /**
+     * @brief Remove the backup data stored in the Flash
+     * @return 0 if success, -1 if failure
+     */
+    int removeEphemeris(void);
+
     /**
      * @brief Get the QZQSM DC report data
      * @return the pointer to DC Report structure if valid, otherwise NULL