sack off string for static memory allocation

Author: tyeth

platformio.ini

@@ -16,8 +16,16 @@ framework = arduino
 monitor_speed = 115200
 lib_compat_mode = strict
 lib_deps =
+    ;;;;;;;;;;;  FunHouse / LVGL Boards uncomment these   ;;;;;;;;;;;;;;
+    ; https://github.com/adafruit/Adafruit_HX8357_Library.git
+    ; https://github.com/adafruit/Adafruit_ILI9341.git
+    ; https://github.com/adafruit/Adafruit_STMPE610.git 
+    ; https://github.com/adafruit/Adafruit-ST7735-Library.git
+    ; https://github.com/adafruit/Adafruit_TouchScreen.git
+    ; https://github.com/brentru/lvgl.git#wippersnapper
+    ; https://github.com/brentru/Adafruit_LvGL_Glue.git#development
+    ;;;;;;;;;;;  All Boards need these libraries included ;;;;;;;;;;;;;;
     adafruit/Adafruit Zero DMA Library
-    https://github.com/adafruit/Adafruit_TinyUSB_Arduino.git
     adafruit/Adafruit NeoPixel
     adafruit/Adafruit SPIFlash
     adafruit/Adafruit DotStar
@@ -78,14 +86,8 @@ lib_deps =
     https://github.com/Sensirion/arduino-i2c-sen5x.git
     https://github.com/adafruit/WiFiNINA.git
     https://github.com/Starmbi/hp_BH1750.git
-    ;;;;;;;;;;;  FunHouse / LVGL Boards  ;;;;;;;;;;;;;;
-    https://github.com/adafruit/Adafruit_HX8357_Library.git
-    https://github.com/adafruit/Adafruit_ILI9341.git
-    https://github.com/adafruit/Adafruit_STMPE610.git 
-    https://github.com/adafruit/Adafruit-ST7735-Library.git
-    https://github.com/adafruit/Adafruit_TouchScreen.git
-    https://github.com/brentru/lvgl.git#wippersnapper
-    https://github.com/brentru/Adafruit_LvGL_Glue.git#development
+    https://github.com/adafruit/Adafruit_TinyUSB_Arduino.git
+
 
 
 ; Common build environment for ESP32 platform
@@ -107,9 +109,10 @@ platform = atmelsam
 platform_packages =
     platformio/framework-arduino-samd-adafruit@^1.7.13
     platformio/tool-jlink@^1.78811.0
-lib_ldf_mode = deep
+lib_ldf_mode = chain+
+lib_compat_mode = strict
 lib_archive = no ; debug timer issues see https://community.platformio.org/t/choose-usb-stack-as-tiny-usb/22451/5
-lib_ignore = OneWire
+lib_ignore = OneWire, USBHost
 
 [common:rp2040]
 platform = https://github.com/maxgerhardt/platform-raspberrypi.git
@@ -418,8 +421,9 @@ upload_port = /dev/cu.SLAB_USBtoUART
 [env:adafruit_pyportal_m4]
 extends = common:atsamd
 board = adafruit_pyportal_m4
-build_flags = -DUSE_TINYUSB=1
+build_flags = -DUSE_TINYUSB
               -DADAFRUIT_PYPORTAL
+extra_scripts = pre:rename_usb_config.py
 
 ; Adafruit PyPortal M4 Titano
 [env:adafruit_pyportal_m4_titano]
@@ -463,8 +467,9 @@ build_flags = -DUSE_TINYUSB
 [env:adafruit_metro_m4_airliftlite]
 extends = common:atsamd
 board = adafruit_metro_m4_airliftlite
-build_flags = -DUSE_TINYUSB=1
+build_flags = -DUSE_TINYUSB
               -DADAFRUIT_METRO_M4_AIRLIFT_LITE
+; extra_scripts = pre:rename_usb_config.py
 upload_port = /dev/cu.usbmodem1201
 
 

src/network_interfaces/Wippersnapper_AIRLIFT.h

@@ -103,13 +103,13 @@ class Wippersnapper_AIRLIFT : public Wippersnapper {
     _pass = WS._config.network.pass;
   }
 
-  /****************************************************************/
+  /*******************************************************************/
   /*!
-  @brief  a structure to hold network information for sorting
+  @brief  fixed size structure to hold network information for sorting
   */
-  /****************************************************************/
+  /*******************************************************************/
   struct WiFiNetwork {
-    String ssid[32]; /*!< SSID (Max 32 characters + null terminator */
+    char ssid[33]; /*!< SSID (Max 32 characters + null terminator */
     int32_t rssi = -99;      /*!< Received Signal Strength Indicator */
   };
 
@@ -148,9 +148,17 @@ class Wippersnapper_AIRLIFT : public Wippersnapper {
     WiFiNetwork networks[WS_MAX_SORTED_NETWORKS];
 
     // Store the scanned networks in the array
-    for (int i = 0; i < n && i < WS_MAX_SORTED_NETWORKS; ++i) {
-      strncpy(networks[i].ssid, WiFi.SSID(i), sizeof(networks[i].ssid));
-      networks[i].rssi = WiFi.RSSI(i);
+    for (int i = 0; i < n; ++i) {
+      if (i < WS_MAX_SORTED_NETWORKS){
+        strncpy(networks[i].ssid, WiFi.SSID(i), sizeof(networks[i].ssid));
+        networks[i].ssid[sizeof(networks[i].ssid) - 1] = '\0';
+        networks[i].rssi = WiFi.RSSI(i);
+      } else {
+        WS_DEBUG_PRINT("ERROR: Too many networks found! (>");
+        WS_DEBUG_PRINT(WS_MAX_SORTED_NETWORKS);
+        WS_DEBUG_PRINT(") Ignoring ");
+        WS_DEBUG_PRINT(WiFi.SSID(i));
+      }
     }
 
     // Sort the networks by RSSI in descending order