initial screen based t-echo lite with card kb support build

patch_nrf52_bsp.py

@@ -0,0 +1,66 @@
+"""
+patch_nrf52_bsp.py — Pre-build BSP patches for nRF52 Meck builds
+
+Patches the Adafruit nRF52 BSP's LittleFS File class to add a default
+constructor. BSP 1.7.0 removed the default File() constructor, but the
+Meck screen headers (NotesScreen, TextReaderScreen, EpubZipReader) have
+File member variables that need default construction.
+
+Runs automatically before each build via extra_scripts in platformio.ini.
+Idempotent — safe to run repeatedly.
+"""
+Import("env")
+import os
+
+framework_dir = env.PioPlatform().get_package_dir("framework-arduinoadafruitnrf52")
+lfs_src = os.path.join(framework_dir, "libraries", "Adafruit_LittleFS", "src")
+
+# -------------------------------------------------------------------------
+# 1. Patch header: add File() default constructor declaration
+# -------------------------------------------------------------------------
+header_path = os.path.join(lfs_src, "Adafruit_LittleFS_File.h")
+
+with open(header_path, "r") as f:
+    h = f.read()
+
+if "File ();" not in h and "File();" not in h:
+    h = h.replace(
+        "File (Adafruit_LittleFS &fs);",
+        "File (Adafruit_LittleFS &fs);\n    File ();  // Meck nRF52 compat"
+    )
+    with open(header_path, "w") as f:
+        f.write(h)
+    print("LittleFS File patch: Added default constructor declaration")
+else:
+    print("LittleFS File patch: OK - header already patched")
+
+# -------------------------------------------------------------------------
+# 2. Patch source: add File() default constructor implementation
+#    Uses C++11 delegating constructor → File(InternalFS)
+# -------------------------------------------------------------------------
+source_path = os.path.join(lfs_src, "Adafruit_LittleFS_File.cpp")
+
+with open(source_path, "r") as f:
+    s = f.read()
+
+if "File::File()" not in s:
+    # Locate InternalFileSystem header (Adafruit BSP has a known typo: "Sytem")
+    ifs_include = None
+    for dirname in ["InternalFileSytem", "InternalFileSystem"]:
+        candidate = os.path.join(framework_dir, "libraries", dirname, "src")
+        if os.path.isdir(candidate):
+            rel = os.path.relpath(candidate, lfs_src).replace("\\", "/")
+            ifs_include = rel + "/InternalFileSystem.h"
+            break
+
+    if ifs_include:
+        s += "\n// Meck nRF52 compat: default File() constructor\n"
+        s += '#include "' + ifs_include + '"\n'
+        s += "File::File() : File(InternalFS) {}\n"
+        with open(source_path, "w") as f:
+            f.write(s)
+        print("LittleFS File patch: Added default constructor implementation")
+    else:
+        print("LittleFS File patch: WARNING - could not find InternalFileSystem")
+else:
+    print("LittleFS File patch: OK - source already patched")