完成：实验三 第一题

homework3/homework3.code-workspace

@@ -18,7 +18,8 @@
       "*.c++": "cpp",
       "*.cpp": "cpp",
       "*.cxx": "cpp",
-            "*.cc": "cpp"
+      "*.cc": "cpp",
+      "REG52.H": "cpp"
     },
     "[yaml]": {
       "editor.insertSpaces": true,

homework3/src/homework3.h

@@ -0,0 +1,29 @@
+// homework3.h
+// 这个文件是用来存放本实验中用到的宏定义和函数的
+#include <REG52.H>
+
+#define true  1
+#define false 0
+
+unsigned int i = 0;
+
+sbit D1 = P2 ^ 7;
+sbit D2 = P2 ^ 6;
+sbit D3 = P2 ^ 5;
+sbit D4 = P2 ^ 4;
+sbit D5 = P2 ^ 3;
+sbit D6 = P2 ^ 2;
+sbit D7 = P2 ^ 1;
+sbit D8 = P2 ^ 0;
+
+sbit ADDR0=P1^0;
+sbit ADDR1=P1^1;
+sbit ADDR2=P1^2;
+sbit ADDR3=P1^3;
+sbit ENLED=P1^4;
+
+
+void Delay(unsigned int t)
+{
+    while (t--);
+}

homework3/src/test1.c

@@ -0,0 +1,28 @@
+// test1.c
+// 左向流水灯
+#include "homework3.h"
+
+unsigned char cnt = 0;
+
+void test1()
+{
+    ENLED = 0;
+    ADDR3 = 1;
+    ADDR2 = 1;
+    ADDR1 = 1;
+    ADDR0 = 0;
+
+    while (true) {
+        P2 = ~(0x80 >> cnt);
+        Delay(20000);
+        cnt++;
+        if (cnt >= 8) {
+            cnt = 0;
+        }
+    }
+}
+
+void main()
+{
+    test1();
+}