Change VFS basis to SQLite instead of NodeMCU

Author: siara-cc

examples/sqlite3_bulk_data_insert/sqlite3_bulk_data_insert.ino

@@ -15,6 +15,7 @@
 #include <SPI.h>
 #include <FS.h>
 #include "SD_MMC.h"
+#include "SPIFFS.h"
 
 char *dat = NULL;
 void block_heap(int times) {
@@ -106,9 +107,9 @@ void displayPrompt(const char *title) {
 
 void displayFreeHeap() {
    Serial.printf("\nHeap size: %d\n", ESP.getHeapSize());
-   Serial.printf("Free Heap: %d\n", esp_get_free_heap_size());
-   Serial.printf("Min Free Heap: %d\n", esp_get_minimum_free_heap_size());
-   Serial.printf("Max Alloc Heap: %d\n", ESP.getMaxAllocHeap());
+   Serial.printf("Free Heap: %d\n", heap_caps_get_free_size(MALLOC_CAP_8BIT));
+   Serial.printf("Min Free Heap: %d\n", heap_caps_get_minimum_free_size(MALLOC_CAP_8BIT));
+   Serial.printf("Max Alloc Heap: %d\n", heap_caps_get_largest_free_block(MALLOC_CAP_8BIT));
 }
 
 char *random_strings[] = {"Hello world", "Have a nice day", "Testing memory problems", "This should work", "ESP32 has 512k RAM", "ESP8266 has only 36k user RAM", 
@@ -121,6 +122,10 @@ int rc;
 
 void setup() {
    Serial.begin(115200);
+   if (!SPIFFS.begin(true)) {
+     Serial.println(F("Failed to mount file Serial"));
+     return;
+   }
 
    randomSeed(analogRead(0));
 
@@ -139,7 +144,7 @@ void setup() {
 void loop() {
 
    // Open database 1
-   if (openDb("/sdcard/test_bulk_insert.db", &db1))
+   if (openDb("/sdcard/bulk_ins.db", &db1))
      return;
 
    displayFreeHeap();
@@ -209,4 +214,3 @@ void loop() {
    input_num();
 
 }
-

examples/sqlite3_console/sqlite3_console.ino

@@ -72,6 +72,8 @@ int db_open() {
   int rc = sqlite3_open(db_file_name, &db);
   if (rc) {
     Serial.print(F("Can't open database: "));
+    Serial.print(sqlite3_extended_errcode(db));
+    Serial.print(" ");
     Serial.println(sqlite3_errmsg(db));
     return rc;
   } else
@@ -91,6 +93,8 @@ int db_exec(const char *sql) {
   int rc = sqlite3_exec(db, sql, callback, (void*)data, &zErrMsg);
   if (rc != SQLITE_OK) {
     Serial.print(F("SQL error: "));
+    Serial.print(sqlite3_extended_errcode(db));
+    Serial.print(" ");
     Serial.println(zErrMsg);
     sqlite3_free(zErrMsg);
   } else
@@ -183,7 +187,7 @@ void deleteFile(fs::FS &fs, const char *path) {
 }
 
 enum {CHOICE_OPEN_DB = 1, CHOICE_EXEC_SQL, CHOICE_EXEC_MULTI_SQL, CHOICE_CLOSE_DB,
-    CHOICE_LIST_FOLDER, CHOICE_RENAME_FILE, CHOICE_DELETE_FILE};
+    CHOICE_LIST_FOLDER, CHOICE_RENAME_FILE, CHOICE_DELETE_FILE, CHOICE_SHOW_FREE_MEM};
 int askChoice() {
   Serial.println();
   Serial.println(F("Welcome to SQLite console!!"));
@@ -199,6 +203,7 @@ int askChoice() {
   Serial.println(F("5. List folder contents"));
   Serial.println(F("6. Rename file"));
   Serial.println(F("7. Delete file"));
+  Serial.println(F("8. Show free memory"));
   Serial.println();
   Serial.print(F("Enter choice: "));
   return input_num();
@@ -306,8 +311,14 @@ void loop() {
           }
         }
         break;
+      case CHOICE_SHOW_FREE_MEM:
+        Serial.printf("\nHeap size: %d\n", ESP.getHeapSize());
+        Serial.printf("Free Heap: %d\n", esp_get_free_heap_size());
+        Serial.printf("Min Free Heap: %d\n", esp_get_minimum_free_heap_size());
+        Serial.printf("Largest Free block: %d\n", heap_caps_get_largest_free_block());
+        break;
       default:
         Serial.println(F("Invalid choice. Try again."));
   }
 
-}
+}