tooling: Add make list-frozen target to inspect frozen modules on board.

Author: nedseb

Makefile

@@ -153,6 +153,34 @@ repl: ## Open MicroPython REPL on the board
 mount: ## Mount lib/ on the board for live testing
 	$(PYTHON) -m mpremote connect $(PORT) mount lib/
 
+.PHONY: list-frozen
+list-frozen: ## List frozen modules on the connected board
+	@$(PYTHON) -m mpremote connect $(PORT) exec "\
+import sys;\
+frozen = [];\
+mods = help('modules');\
+" 2>/dev/null
+	@echo ""
+	@echo "--- Frozen driver modules ---"
+	@$(PYTHON) -m mpremote connect $(PORT) exec "\
+import sys;\
+drivers = ['apds9960','bme280','bq27441','daplink_bridge','daplink_flash',\
+'gc9a01','hts221','im34dt05','ism330dl','lis2mdl','mcp23009e',\
+'ssd1327','steami_config','vl53l1x','wsen_hids','wsen_pads'];\
+for d in drivers:\
+    try:\
+        mod = __import__(d);\
+        f = getattr(mod, '__file__', None);\
+        if f and '.frozen' in f:\
+            print('  ' + d + '  -> frozen');\
+        elif f:\
+            print('  ' + d + '  -> filesystem: ' + f);\
+        else:\
+            print('  ' + d + '  -> built-in');\
+    except ImportError:\
+        print('  ' + d + '  -> NOT AVAILABLE');\
+"
+
 # --- Release ---
 
 PART ?= patch