Storage: add QSPIFormat sketch with default partitioning

Former-commit-id: 04073e0

Author: pennam

libraries/Storage/examples/QSPIFormat/QSPIFormat.ino

@@ -0,0 +1,87 @@
+/*
+  Portenta C33 - QSPI Flash format
+
+  The sketch formats the board QSPI flash as follow:
+
+  * Partition 1  5MB: used for network certificates and OTA
+  * Partition 2 11MB: general purpose
+
+  This example code is in the public domain.
+*/
+
+#include "BlockDevice.h"
+#include "MBRBlockDevice.h"
+#include "LittleFileSystem.h"
+#include "FATFileSystem.h"
+
+BlockDevice* root = BlockDevice::get_default_instance();
+MBRBlockDevice sys_bd(root, 1);
+MBRBlockDevice user_bd(root, 2);
+FATFileSystem sys_fs("sys");
+FileSystem * user_data_fs;
+
+bool waitResponse() {
+  bool confirmation = false;
+  while (confirmation == false) {
+    if (Serial.available()) {
+      char choice = Serial.read();
+      switch (choice) {
+        case 'y':
+        case 'Y':
+          confirmation = true;
+          return true;
+          break;
+        case 'n':
+        case 'N':
+          confirmation = true;
+          return false;
+          break;
+        default:
+          continue;
+      }
+    }
+  }
+}
+
+void setup() {
+
+  Serial.begin(115200);
+  while (!Serial);
+
+  Serial.println("\nWARNING! Running the sketch all the content of the QSPI flash will be erased.");
+  Serial.println("Do you want to proceed? Y/[n]");
+
+  if (true == waitResponse()) {
+    MBRBlockDevice::partition(root, 1, 0x0B, 0, 5 * 1024 * 1024);
+    MBRBlockDevice::partition(root, 2, 0x0B, 5 * 1024 * 1024, 16 * 1024 * 1024);
+
+    int err = sys_fs.reformat(&sys_bd);
+    if (err) {
+      Serial.println("Error formatting sys partition");
+    }
+
+    Serial.println("\nDo you want to use LittleFS to format user data partition? Y/[n]");
+    Serial.println("If No, FatFS will be used to format user partition.");
+
+    if (true == waitResponse()) {
+      Serial.println("Formatting user partition with LittleFS.");
+      user_data_fs = new LittleFileSystem("user");
+    } else {
+      Serial.println("Formatting user partition with FatFS.");
+      user_data_fs = new FATFileSystem("user");
+    }
+
+    err = user_data_fs->reformat(&user_bd);
+    if (err) {
+      Serial.println("Error formatting user partition");
+    }
+
+    Serial.println("\nQSPI Flash formatted!");
+  }
+
+  Serial.println("It's now safe to reboot or disconnect your board.");
+}
+
+void loop() {
+
+}