修复开关控制组控的控制异常问题

修改PB开关状态组控处理，解决后32路的开关状态会复用上前32个回路的数据

Source/arch/mem_init.c

@@ -0,0 +1,44 @@
+/*
+ * Filename : mem_init.c
+ *
+ * Memory Initialization
+ *
+ * Copyrights 2015 @ APTCHIP
+ *
+ *
+ */
+#include "string.h"
+
+extern char _end_rodata[];
+extern char _start_data[];
+extern char _end_data[];
+
+extern char _bss_start[];
+extern char _ebss[];
+
+
+void __main( void ) 
+{
+
+  char *dst = _start_data;
+  char *src = _end_rodata;
+
+  /* if the start of data (dst)
+     is not equal to end of text (src) then
+     copy it, else it's already in the right place
+     */
+  if( _start_data != _end_rodata ) {
+//    __memcpy_fast( dst, src, (_end_data - _start_data));
+    memcpy( dst, src, (_end_data - _start_data));
+  }
+
+  /* zero the bss 
+   */
+  if( _ebss - _bss_start ) {
+//    __memset_fast( _bss_start, 0x00, ( _ebss - _bss_start ));
+    memset( _bss_start, 0x00, ( _ebss - _bss_start ));
+  }
+
+	
+}
+