feat: 保存已验证的CH390网络打通基线

Drivers/LwIP/src/include/arch/sys_arch.h

@@ -13,6 +13,36 @@
 #include "lwip/arch.h"
 #include <stdlib.h>
 
+/*
+ * FreeRTOSConfig.h currently injects lwIP-related helper macros globally.
+ * Those overrides break the normal lwIP sys.h/sys_arch contract by replacing
+ * function declarations such as sys_now() with object-like macros.
+ * Undefine them here so lwIP uses the port's real sys_arch implementation.
+ */
+#ifdef sys_now
+#undef sys_now
+#endif
+
+#ifdef sys_arch_protect
+#undef sys_arch_protect
+#endif
+
+#ifdef sys_arch_unprotect
+#undef sys_arch_unprotect
+#endif
+
+#ifdef SYS_ARCH_DECL_PROTECT
+#undef SYS_ARCH_DECL_PROTECT
+#endif
+
+#ifdef SYS_ARCH_PROTECT
+#undef SYS_ARCH_PROTECT
+#endif
+
+#ifdef SYS_ARCH_UNPROTECT
+#undef SYS_ARCH_UNPROTECT
+#endif
+
 #ifdef __cplusplus
 extern "C" {
 #endif