Restored nvs_flash_init

main/main.c

@@ -2337,7 +2337,7 @@ esp_err_t mountSPIFFS(char * path, char * label, int max_files) {
 		.base_path = path,
 		.partition_label = label,
 		.max_files = max_files,
-		.format_if_mount_failed =true
+		.format_if_mount_failed = true
 	};
 
 	// Use settings defined above to initialize and mount SPIFFS filesystem.
@@ -2381,6 +2381,18 @@ esp_err_t mountSPIFFS(char * path, char * label, int max_files) {
 
 void app_main(void)
 {
+	// Initialize NVS
+	// NVS saves the touch position calibration.
+	ESP_LOGI(TAG, "Initialize NVS");
+	esp_err_t err = nvs_flash_init();
+	if (err == ESP_ERR_NVS_NO_FREE_PAGES || err == ESP_ERR_NVS_NEW_VERSION_FOUND) {
+		// NVS partition was truncated and needs to be erased
+		// Retry nvs_flash_init
+		ESP_ERROR_CHECK(nvs_flash_erase());
+		err = nvs_flash_init();
+	}
+	ESP_ERROR_CHECK( err );
+
 	ESP_LOGI(TAG, "Initializing SPIFFS");
 	// Maximum files that could be open at the same time is 10.
 	ESP_ERROR_CHECK(mountSPIFFS("/fonts", "storage0", 10));