archive: homework8 test1

.gitignore

@@ -54,3 +54,6 @@ dkms.conf
 # proteus workspace
 *.workspace
 */Project Backups/
+
+# others
+89C51_Simple_Calculator/

homework5/.eide/eide.json

@@ -20,9 +20,9 @@
     "Debug": {
       "excludeList": [
         "src/test.c",
-        "src/test2.c",
-        "src/test3.c",
-        "src/test4.c"
+        "src/test1.c",
+        "src/test4.c",
+        "src/test3.c"
       ],
       "toolchain": "Keil_C51",
       "compileConfig": {

homework6/.clang-format

@@ -0,0 +1,38 @@
+---
+BasedOnStyle: Microsoft
+Language: Cpp
+
+###################################
+#          indent conf
+###################################
+
+UseTab: Never
+IndentWidth: 4
+TabWidth: 4
+ColumnLimit: 0
+AccessModifierOffset: -4
+NamespaceIndentation: All
+FixNamespaceComments: false
+BreakBeforeBraces: Linux
+
+###################################
+#          other styles
+###################################
+
+# 
+# for more conf, you can ref: https://clang.llvm.org/docs/ClangFormatStyleOptions.html
+#
+
+AllowShortIfStatementsOnASingleLine: true
+
+AllowShortLoopsOnASingleLine: true
+
+AllowShortBlocksOnASingleLine: true
+
+IndentCaseLabels: true
+
+SortIncludes: false
+
+AlignConsecutiveMacros: AcrossEmptyLines
+
+AlignConsecutiveAssignments: Consecutive

homework6/.eide/eide.json

@@ -0,0 +1,84 @@
+{
+  "name": "homework6",
+  "type": "C51",
+  "dependenceList": [],
+  "srcDirs": [
+    "src"
+  ],
+  "virtualFolder": {
+    "name": "<virtual_root>",
+    "files": [],
+    "folders": []
+  },
+  "outDir": "build",
+  "deviceName": null,
+  "packDir": null,
+  "miscInfo": {
+    "uid": "8219e80baa2ee376f6321a1ce1b13e9c"
+  },
+  "targets": {
+    "Debug": {
+      "excludeList": [
+        "src/test3.c",
+        "src/test2.c",
+        "src/test4.c"
+      ],
+      "toolchain": "Keil_C51",
+      "compileConfig": {
+        "options": "null"
+      },
+      "uploader": "Custom",
+      "uploadConfig": {
+        "bin": "",
+        "commandLine": "",
+        "eraseChipCommand": ""
+      },
+      "uploadConfigMap": {},
+      "custom_dep": {
+        "name": "default",
+        "incList": [],
+        "libList": [],
+        "defineList": []
+      },
+      "builderOptions": {
+        "SDCC": {
+          "version": 3,
+          "beforeBuildTasks": [],
+          "afterBuildTasks": [],
+          "global": {
+            "device": "mcs51",
+            "optimize-type": "speed",
+            "use-non-free": false
+          },
+          "c/cpp-compiler": {
+            "language-c": "c99"
+          },
+          "asm-compiler": {},
+          "linker": {
+            "$mainFileName": "main",
+            "output-format": "hex"
+          }
+        },
+        "Keil_C51": {
+          "version": 2,
+          "beforeBuildTasks": [],
+          "afterBuildTasks": [],
+          "global": {
+            "ram-mode": "SMALL",
+            "rom-mode": "LARGE"
+          },
+          "c/cpp-compiler": {
+            "optimization-type": "SPEED",
+            "optimization-level": "level-8"
+          },
+          "asm-compiler": {},
+          "linker": {
+            "remove-unused": true,
+            "output-format": "elf"
+          }
+        }
+      }
+    }
+  },
+  "version": "3.5"
+}

homework6/.eide/files.options.yml

@@ -0,0 +1,20 @@
+##########################################################################################
+#                        Append Compiler Options For Source Files
+##########################################################################################
+
+# syntax:
+#   <your pattern>: <compiler options>
+# For get pattern syntax, please refer to: https://www.npmjs.com/package/micromatch
+#
+# examples:
+#   'main.cpp':           --cpp11 -Og ...
+#   'src/*.c':            -gnu -O2 ...
+#   'src/lib/**/*.cpp':   --cpp11 -Os ...
+#   '!Application/*.c':   -O0
+#   '**/*.c':             -O2 -gnu ...
+
+version: "2.0"
+options:
+    Debug:
+        files: {}
+        virtualPathFiles: {}

homework6/.gitignore

@@ -0,0 +1,15 @@
+# dot files
+/.vscode/launch.json
+/.settings
+/.eide/log
+/.eide.usr.ctx.json
+
+# project out
+/build
+/bin
+/obj
+/out
+
+# eide template
+*.ept
+*.eide-template

homework6/.vscode/settings.json

@@ -0,0 +1 @@
+{}

homework6/.vscode/tasks.json

@@ -0,0 +1,40 @@
+{
+    "version": "2.0.0",
+    "tasks": [
+        {
+            "label": "build",
+            "type": "shell",
+            "command": "${command:eide.project.build}",
+            "group": "build",
+            "problemMatcher": []
+        },
+        {
+            "label": "flash",
+            "type": "shell",
+            "command": "${command:eide.project.uploadToDevice}",
+            "group": "build",
+            "problemMatcher": []
+        },
+        {
+            "label": "build and flash",
+            "type": "shell",
+            "command": "${command:eide.project.buildAndFlash}",
+            "group": "build",
+            "problemMatcher": []
+        },
+        {
+            "label": "rebuild",
+            "type": "shell",
+            "command": "${command:eide.project.rebuild}",
+            "group": "build",
+            "problemMatcher": []
+        },
+        {
+            "label": "clean",
+            "type": "shell",
+            "command": "${command:eide.project.clean}",
+            "group": "build",
+            "problemMatcher": []
+        }
+    ]
+}

homework6/homework6.code-workspace

@@ -0,0 +1,45 @@
+{
+    "folders": [
+        {
+            "path": "."
+        }
+    ],
+    "settings": {
+        "files.autoGuessEncoding": true,
+        "C_Cpp.default.configurationProvider": "cl.eide",
+        "C_Cpp.errorSquiggles": "disabled",
+        "files.associations": {
+            ".eideignore": "ignore",
+            "*.a51": "a51",
+            "*.h": "c",
+            "*.c": "c",
+            "*.hxx": "cpp",
+            "*.hpp": "cpp",
+            "*.c++": "cpp",
+            "*.cpp": "cpp",
+            "*.cxx": "cpp",
+            "*.cc": "cpp",
+            "REG52.H": "cpp"
+        },
+        "[yaml]": {
+            "editor.insertSpaces": true,
+            "editor.tabSize": 4,
+            "editor.autoIndent": "advanced"
+        }
+    },
+    "extensions": {
+        "recommendations": [
+            "cl.eide",
+            "keroc.hex-fmt",
+            "xiaoyongdong.srecord",
+            "hars.cppsnippets",
+            "zixuanwang.linkerscript",
+            "redhat.vscode-yaml",
+            "IBM.output-colorizer",
+            "cschlosser.doxdocgen",
+            "ms-vscode.vscode-serial-monitor",
+            "alefragnani.project-manager",
+            "cl.stm8-debug"
+        ]
+    }
+}

homework6/src/homework6.h

@@ -0,0 +1,73 @@
+// homework6.h
+/*
+ * this is the header file to
+ * define the
+ * variables:
+ * - 38 transistors address
+ * - pins for the LEDs and the segs
+ * - pins for the 38 transistors
+ * - seg chars to display to display the number
+ * functions:
+ * - set the 38 transistors.
+ */
+
+#include <REG52.H>
+
+// variables:
+// 38 transistors address
+#define LEDS   [6]{0, 1, 2, 3, 4, 5}
+#define TO_LED 6
+// pins for the LEDs and the segs
+sbit BUS1A  = P2 ^ 0; // Red LED and A Seg
+sbit BUS2B  = P2 ^ 1; // Orange LED and B Seg
+sbit BUS3C  = P2 ^ 2; // Yellow LED and C Seg
+sbit BUS4D  = P2 ^ 3; // Green LED and D Seg
+sbit BUS5E  = P2 ^ 4; // Aqua LED and E Seg
+sbit BUS6F  = P2 ^ 5; // BLUE LED and F Seg
+sbit BUS7G  = P2 ^ 6; // Purple LED and G Seg
+sbit BUS8DP = P2 ^ 7; // White LED and DP Seg
+// pins for the 38 transistors
+sbit ADDR0 = P1 ^ 0; // to A(A0)
+sbit ADDR1 = P1 ^ 1; // to B(A1)
+sbit ADDR2 = P1 ^ 2; // to C(A2)
+sbit ADDR3 = P1 ^ 3; // to E1
+sbit ENLED = P1 ^ 4; // to E2 & E3
+// seg chars to display to display the number
+unsigned char code LedChar[] = {
+    0xC0,
+    0xF9,
+    0XA4,
+    0XB0,
+    0X99,
+    0X92,
+    0X82,
+    0XF8,
+    0X80,
+    0X90,
+    0X88,
+    0X83,
+    0XC6,
+    0XA1,
+    0X86,
+    0X8E,
+};
+// functions:
+// 38 transistors control function
+/*
+ * param:
+ * - addr: the address of the 38 transistors.
+ * function:
+ * - Convert the address to 3 binary numbers.
+ * - Set the 38 transistors to the address.
+ */
+void set38(unsigned char addr)
+{
+    // Enable the 38 transistors.
+    ENLED = 0;
+    ADDR3 = 1;
+    // Set the 38 transistors to the address.
+    ADDR0 = addr & 0x01;
+    ADDR1 = (addr & 0x02) >> 1;
+    ADDR2 = (addr & 0x04) >> 2;
+}
+// low seg is the right side.

homework6/src/test1.c

@@ -0,0 +1,44 @@
+// test1.c
+// 定时器0中断实现流水灯，设定合适的初值实现1s定时，控制LED灯依次点亮，形成流水灯效果
+// Timer 0 interrupt to implement the LED light,
+// set the appropriate initial value to implement 1s timing,
+// control the LED light to turn on one by one, forming the light effect.
+
+#include "homework6.h"
+
+void test1()
+{
+    // Set the 38 transistors to the address.
+    set38(TO_LED);
+    // init the timer 0.
+    TMOD = 0x01; // set the timer 0 to mode 1.
+    TH0  = 0xFC; // set the timer 0 to 1s.
+    TL0  = 0x66; // set the timer 0 to 1s.
+    TR0  = 1;    // start the timer 0.
+    ET0  = 1;    // enable the timer 0 interrupt.
+    EA   = 1;    // enable the interrupt.
+    P2   = 0xFE; // init mode: the first LED light.
+    while (1) {}
+}
+
+void Timer0_ISR() interrupt 1
+{
+    static unsigned int counter = 0;    // counter to count the number of interrupts.
+    static unsigned char led    = 0xFE; // store the LED light.
+
+    // reset the timer 0.
+    TH0 = 0xFC; // set the timer 0 to 1s.
+    TL0 = 0x66; // set the timer 0 to 1s.
+
+    if (++counter >= 1000) {
+        counter = 0;                 // reset the counter.
+        led     = (led << 1) | 0x01; // shift the LED light to the left.
+        if (led == 0xFF) led = 0xFE; // if the LED light is 0xFF, reset the LED light to 0xFE.
+        P2 = led;                    // set the LED light.
+    }
+}
+
+void main()
+{
+    test1();
+}

homework6/src/test2.c

@@ -0,0 +1,39 @@
+// test2.c
+// 定时器1中断控制两个LED交替闪烁。设置定时器1的初值，使其每隔25ms产生一次中断。
+// 在中断服务程序中，每次中断对两个LED的状态进行切换，一个LED亮时另一个LED灭，
+// 从而实现交替闪烁
+// Timer 1 interrupt to control two LED lights to alternate.
+// Set the initial value of the timer 1 to make it produce an interrupt every 25ms.
+// In the interrupt service program,
+// switch the state of the two LED lights every time an interrupt occurs,
+// one LED light on at a time, and the other LED light off,
+// thus implementing alternating flashing.
+
+#include "homework6.h"
+
+void test2()
+{
+    // Set the 38 transistors to the address.
+    set38(TO_LED);
+    // init the timer 1.
+    TMOD = 0x9E; // set the timer 1 to mode 1.
+    TH1  = 0x58; // set the timer 1 to 25ms.
+    TL1  = 0x66; // set the timer 1 to 25ms.
+    TR1  = 1;    // start the timer 1.
+    ET1  = 1;    // enable the timer 1 interrupt.
+    EA   = 1;    // enable the interrupt.
+    P2   = 0xFC; // init mode: the first LED light.
+    while (1) {}
+}
+
+void Timer1_ISR() interrupt 3
+{
+    TH1 = 0x9E; // reset the timer 1.
+    TH1 = 0x58; // reset the timer 1.
+    P2 ^= 0x03; // switch the state of the two LED lights.
+}
+
+void main()
+{
+    test2();
+}

homework6/src/test3.c

@@ -0,0 +1,50 @@
+// test3.c
+// 通过定时器T1中断，实现三位数秒表
+// make a three-digit stopwatch by timer T1 interrupt.
+#include "homework6.h"
+
+unsigned char digits[3]  = {0, 0, 0}; // store the three digits of the stopwatch.
+unsigned char displayPos = 0;         // store the position of the display.
+
+void test3()
+{
+    TMOD = 0x10; // set the timer 1 to mode 1.
+    TH1  = 0xFC; // set the timer 1 to 1s.
+    TL1  = 0x18; // set the timer 1 to 1s.
+    TR1  = 1;    // start the timer 1.
+    ET1  = 1;    // enable the timer 1 interrupt.
+    EA   = 1;    // enable the interrupt.
+    while (1);
+}
+void Timer1_ISR() interrupt 3
+{
+    static unsigned int counter = 0;      // counter to count the number of interrupts.
+    TH1                         = 0xFC;   // reset the timer 1.
+    TL1                         = 0x18;   // reset the timer 1.
+    set38(displayPos);                    // set the 38 transistors to the address.
+    P2 = LedChar[digits[2 - displayPos]]; // display the digit.
+    displayPos++;                         // switch to the next digit.
+    if (displayPos >= 3) displayPos = 0;  // if the display position is 3, reset the display position to 0.
+    if (++counter >= 1000) {
+        counter = 0; // reset the counter.
+        if (++digits[2] >= 10) {
+            digits[2] = 0; // reset the third digit.
+            if (++digits[1] >= 10) {
+                digits[1] = 0; // reset the second digit.
+                if (++digits[0] >= 10) {
+                    digits[0] = 0; // reset the first digit.
+                }
+            }
+        }
+    }
+    // reset the stopwatch when the stopwatch is 999.
+    if (digits[0] == 9 && digits[1] == 9 && digits[2] == 9) {
+        digits[0] = 0;
+        digits[1] = 0;
+        digits[2] = 0;
+    }
+}
+void main()
+{
+    test3();
+}

homework6/src/test4.c

@@ -0,0 +1,55 @@
+// test4.c
+// 利用定时器T0定时10秒，并通过数码管显示秒表，到10秒后让led流水灯从左往右移动
+// use timer T0 to count 10 seconds and display the stopwatch on the 7-segment display, and let the led light move from left to right after 10 seconds.
+#include "homework6.h"
+
+unsigned char digits[2]  = {0, 0};
+unsigned char displayPos = 0;
+
+void test4()
+{
+    digits[0] = 1;    // set the first digit to 0.
+    digits[1] = 0;    // set the second digit to 1.
+    TMOD      = 0x01; // set the timer 0 to mode 1.
+    TH0       = 0xFC; // set the timer 0 to 1s.
+    TL0       = 0x18; // set the timer 0 to 1s.
+    TR0       = 1;    // start the timer 0.
+    ET0       = 1;    // enable the timer 0 interrupt.
+    EA        = 1;    // enable the interrupt.
+    while (1) {}
+}
+void Timer0_ISR() interrupt 1
+{
+    static unsigned char led    = 0xFE;     // store the led light.
+    static unsigned int counter = 0;        // counter to count the number of interrupts.
+    TH0                         = 0xFC;     // reset the timer 0.
+    TL0                         = 0x18;     // reset the timer 0.
+    if (digits[0] == 0 && digits[1] == 0) { // if the stopwatch is 00, let the led light move from left to right.
+        set38(TO_LED);                      // set the 38 transistors to the address.
+
+        if (++counter >= 1000) {
+            counter = 0;                 // reset the counter.
+            led     = (led << 1) | 0x01; // shift the led light to the left.
+            if (led == 0xFF) led = 0xFE; // if the led light is 0xFF, reset the led light to 0xFE.
+            P2 = led;                    // set the led light.
+        }
+    } else {
+        set38(displayPos);                    // set the 38 transistors to the address.
+        P2 = LedChar[digits[1 - displayPos]]; // display the digit.
+        displayPos++;                         // switch to the next digit.
+        if (displayPos >= 2) displayPos = 0;  // if the display position is 2, reset the display position to 0.
+        if (++counter >= 1000) {              // if the counter is 1000, count 1 second.
+            counter = 0;                      // reset the counter.
+            if (digits[1]-- == 0) {
+                digits[1] = 9;
+                if (digits[0] > 0) {
+                    digits[0]--;
+                }
+            }
+        }
+    }
+}
+void main()
+{
+    test4();
+}

homework7/.clang-format

@@ -0,0 +1,38 @@
+---
+BasedOnStyle: Microsoft
+Language: Cpp
+
+###################################
+#          indent conf
+###################################
+
+UseTab: Never
+IndentWidth: 4
+TabWidth: 4
+ColumnLimit: 0
+AccessModifierOffset: -4
+NamespaceIndentation: All
+FixNamespaceComments: false
+BreakBeforeBraces: Linux
+
+###################################
+#          other styles
+###################################
+
+# 
+# for more conf, you can ref: https://clang.llvm.org/docs/ClangFormatStyleOptions.html
+#
+
+AllowShortIfStatementsOnASingleLine: true
+
+AllowShortLoopsOnASingleLine: true
+
+AllowShortBlocksOnASingleLine: true
+
+IndentCaseLabels: true
+
+SortIncludes: false
+
+AlignConsecutiveMacros: AcrossEmptyLines
+
+AlignConsecutiveAssignments: Consecutive

homework7/.eide/eide.json

@@ -0,0 +1,85 @@
+{
+  "name": "homework7",
+  "type": "C51",
+  "dependenceList": [],
+  "srcDirs": [
+    "src"
+  ],
+  "virtualFolder": {
+    "name": "<virtual_root>",
+    "files": [],
+    "folders": []
+  },
+  "outDir": "build",
+  "deviceName": null,
+  "packDir": null,
+  "miscInfo": {
+    "uid": "113f2f1f906f1d361f61fd9211e96f55"
+  },
+  "targets": {
+    "Debug": {
+      "excludeList": [
+        "src/test1.c",
+        "src/test2.c",
+        "src/test3.c",
+        "src/test4.c"
+      ],
+      "toolchain": "Keil_C51",
+      "compileConfig": {
+        "options": "null"
+      },
+      "uploader": "Custom",
+      "uploadConfig": {
+        "bin": "",
+        "commandLine": "",
+        "eraseChipCommand": ""
+      },
+      "uploadConfigMap": {},
+      "custom_dep": {
+        "name": "default",
+        "incList": [],
+        "libList": [],
+        "defineList": []
+      },
+      "builderOptions": {
+        "SDCC": {
+          "version": 3,
+          "beforeBuildTasks": [],
+          "afterBuildTasks": [],
+          "global": {
+            "device": "mcs51",
+            "optimize-type": "speed",
+            "use-non-free": false
+          },
+          "c/cpp-compiler": {
+            "language-c": "c99"
+          },
+          "asm-compiler": {},
+          "linker": {
+            "$mainFileName": "main",
+            "output-format": "hex"
+          }
+        },
+        "Keil_C51": {
+          "version": 2,
+          "beforeBuildTasks": [],
+          "afterBuildTasks": [],
+          "global": {
+            "ram-mode": "SMALL",
+            "rom-mode": "LARGE"
+          },
+          "c/cpp-compiler": {
+            "optimization-type": "SPEED",
+            "optimization-level": "level-8"
+          },
+          "asm-compiler": {},
+          "linker": {
+            "remove-unused": true,
+            "output-format": "elf"
+          }
+        }
+      }
+    }
+  },
+  "version": "3.5"
+}

homework7/.eide/files.options.yml

@@ -0,0 +1,20 @@
+##########################################################################################
+#                        Append Compiler Options For Source Files
+##########################################################################################
+
+# syntax:
+#   <your pattern>: <compiler options>
+# For get pattern syntax, please refer to: https://www.npmjs.com/package/micromatch
+#
+# examples:
+#   'main.cpp':           --cpp11 -Og ...
+#   'src/*.c':            -gnu -O2 ...
+#   'src/lib/**/*.cpp':   --cpp11 -Os ...
+#   '!Application/*.c':   -O0
+#   '**/*.c':             -O2 -gnu ...
+
+version: "2.0"
+options:
+    Debug:
+        files: {}
+        virtualPathFiles: {}

homework7/.gitignore

@@ -0,0 +1,15 @@
+# dot files
+/.vscode/launch.json
+/.settings
+/.eide/log
+/.eide.usr.ctx.json
+
+# project out
+/build
+/bin
+/obj
+/out
+
+# eide template
+*.ept
+*.eide-template

homework7/.vscode/settings.json

@@ -0,0 +1 @@
+{}

homework7/.vscode/tasks.json

@@ -0,0 +1,40 @@
+{
+    "version": "2.0.0",
+    "tasks": [
+        {
+            "label": "build",
+            "type": "shell",
+            "command": "${command:eide.project.build}",
+            "group": "build",
+            "problemMatcher": []
+        },
+        {
+            "label": "flash",
+            "type": "shell",
+            "command": "${command:eide.project.uploadToDevice}",
+            "group": "build",
+            "problemMatcher": []
+        },
+        {
+            "label": "build and flash",
+            "type": "shell",
+            "command": "${command:eide.project.buildAndFlash}",
+            "group": "build",
+            "problemMatcher": []
+        },
+        {
+            "label": "rebuild",
+            "type": "shell",
+            "command": "${command:eide.project.rebuild}",
+            "group": "build",
+            "problemMatcher": []
+        },
+        {
+            "label": "clean",
+            "type": "shell",
+            "command": "${command:eide.project.clean}",
+            "group": "build",
+            "problemMatcher": []
+        }
+    ]
+}

homework7/homework7.code-workspace

@@ -0,0 +1,46 @@
+{
+    "folders": [
+        {
+            "path": "."
+        }
+    ],
+    "settings": {
+        "files.autoGuessEncoding": true,
+        "C_Cpp.default.configurationProvider": "cl.eide",
+        "C_Cpp.errorSquiggles": "disabled",
+        "files.associations": {
+            "*.dbclient-js": "javascript",
+            ".eideignore": "ignore",
+            "*.a51": "a51",
+            "*.h": "c",
+            "*.c": "c",
+            "*.hxx": "cpp",
+            "*.hpp": "cpp",
+            "*.c++": "cpp",
+            "*.cpp": "cpp",
+            "*.cxx": "cpp",
+            "*.cc": "cpp",
+            "REG52.H": "cpp"
+        },
+        "[yaml]": {
+            "editor.insertSpaces": true,
+            "editor.tabSize": 4,
+            "editor.autoIndent": "advanced"
+        }
+    },
+    "extensions": {
+        "recommendations": [
+            "cl.eide",
+            "keroc.hex-fmt",
+            "xiaoyongdong.srecord",
+            "hars.cppsnippets",
+            "zixuanwang.linkerscript",
+            "redhat.vscode-yaml",
+            "IBM.output-colorizer",
+            "cschlosser.doxdocgen",
+            "ms-vscode.vscode-serial-monitor",
+            "alefragnani.project-manager",
+            "cl.stm8-debug"
+        ]
+    }
+}

homework7/src/homework7.h

@@ -0,0 +1,77 @@
+/*
+ * @name: homework7.h
+ * @author: msksbr
+ * @date: 2025-05-24
+ * @description: a header for homework7's homework tests
+ * @version: 1.0f: fix errors in timer
+ * variables:
+ *   1.0:
+ *     1. sbit DB_0 ~ sbit DB_7: pin number for led matrix cathodes
+ *     2. pin number for 74HC138's address pins & enable pin
+ *       2.1. sbit ADDR0 ~ sbit ADDR2: pin number for 74HC138's address pins
+ *       2.2. sbit ADDR3 & sbit ENLED: pin number for 74HC138's enable pin
+ * functions:
+ *   1.0:
+ *     1. void switch_138(unsigned char n): switch the 74HC138's address to n
+ *     2. void delay_ms(unsigned char ms): a timer by ms base on timer0 mode 1
+ */
+
+#include <REG52.H>
+
+// variables:
+// 1. sbit DB_0 ~ sbit DB_7: pin number for led matrix cathodes
+sbit DB_0 = P2 ^ 0;
+sbit DB_1 = P2 ^ 1;
+sbit DB_2 = P2 ^ 2;
+sbit DB_3 = P2 ^ 3;
+sbit DB_4 = P2 ^ 4;
+sbit DB_5 = P2 ^ 5;
+sbit DB_6 = P2 ^ 6;
+sbit DB_7 = P2 ^ 7;
+// 2. pin number for 74HC138's address pins & enable pin
+//  2.1. sbit ADDR0 ~ sbit ADDR2: pin number for 74HC138's address pins
+sbit ADDR0 = P1 ^ 0; // @var ADDR0: to A(A0)
+sbit ADDR1 = P1 ^ 1; // @var ADDR1: to B(A1)
+sbit ADDR2 = P1 ^ 2; // @var ADDR2: to C(A2)
+// 2.2. sbit ADDR3 & sbit ENLED: pin number for 74HC138's enable pin
+sbit ADDR3 = P1 ^ 3; // @var ADDR3: to E2
+sbit ENLED = P1 ^ 4; // @var ENLED: to E3
+
+// functions:
+// 1. void switch_138(unsigned char n): switch the 74HC138's address to n
+void switch_138(unsigned char n)
+{
+    bit A0, A1, A2;
+    // @subsection: enable the 74HC138
+    ENLED = 0;
+    ADDR3 = 0;
+    // @subsection: turn n to 3 bit binary number
+    A0 = n & 0x01;
+    A1 = (n >> 1) & 0x01;
+    A2 = (n >> 2) & 0x01;
+    // @subsection: switch the 74HC138's address to n
+    ADDR0 = A0;
+    ADDR1 = A1;
+    ADDR2 = A2;
+}
+// 2. void delay_ms(unsigned char ms): a timer by ms base on timer0 mode 1
+void delay_ms(unsigned char ms)
+{
+    TMOD &= 0xF0; // set the timer mode to 16-bit timer mode.
+    TMOD |= 0x01; // set the timer mode to 16-bit timer mode.
+
+    // 1ms timer definition:
+    TH0 = 0XFC;
+    TL0 = 0X18;
+
+    // start the timer:
+    TR0 = 1;
+
+    while (ms--) {
+        while (!TF0) {} // wait for the timer to overflow.
+        TF0 = 0;        // clear the timer flag.
+        TH0 = 0XFC;     // reload the timer value.
+        TL0 = 0X18;     // reload the timer value.
+    }
+    TR0 = 0; // stop the timer.
+}

homework7/src/test1.c

@@ -0,0 +1,22 @@
+/*
+ * @name: test1.c
+ * @author: msksbr
+ * @date: 2025-05-24
+ * @description: a test for homework7's homework tests
+ * @version: 1.0
+ * homework zh_CN: 点亮点阵左上角的那个LED小灯
+ * homework EN: point the left top LED of the led matrix
+ */
+
+#include "homework7.h"
+
+void test1()
+{
+    switch_138(0); // switch the 74HC138's address to 0
+    DB_0 = 0;      // turn on the led matrix's left top LED
+}
+
+void main()
+{
+    test1();
+}

homework7/src/test2.c

@@ -0,0 +1,36 @@
+/*
+ * @name: test2.c
+ * @author: msksbr
+ * @date: 2025-05-24
+ * @description: a test for homework7's homework tests
+ * @version: 1.0
+ * homework zh_CN: 点阵显示心形图形
+ * homework EN: display a heart shape on the led matrix
+ */
+
+#include "homework7.h"
+
+void test2()
+{
+    unsigned char i; // @var i: a counter for the loop
+    unsigned char code heart[] = {
+        0x00, 0x66, 0xFF, 0xFF,
+        0xFF, 0x7E, 0x3C, 0x18};
+    // @subsection: display a heart shape on the led matrix
+    while (1) // @loop: display the heart shape on the led matrix
+    {
+        for (i = 8; i > 0; i--) // @loop: display the heart shape on the led matrix
+        {
+            switch_138(i); // switch the 74HC138's address to i
+            P2 = ~heart[i]; // display the heart shape on the led matrix
+            delay_ms(1);
+            P2 = 0xFF; // turn off the led matrix
+        }
+        i = 8;
+    }
+}
+
+void main()
+{
+    test2();
+}

homework7/src/test3.c

@@ -0,0 +1,64 @@
+/*
+ * @name: test1.c
+ * @author: msksbr
+ * @date: 2025-05-25
+ * @description: a test for homework7's homework tests
+ * @version: 1.0f: fix animation bugs
+ * homework zh_CN: 点阵显示一个 I ❤ U 的向下移动动画
+ * homework EN: display a animation of I ❤ U moving down on the led matrix
+ */
+
+#include "homework7.h"
+
+unsigned char code display[] = {
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // space
+    0x00, 0x3C, 0x18, 0x18, 0x18, 0x18, 0x18, 0x3C, // I
+    0x00, 0x66, 0xFF, 0xFF, 0xFF, 0x7E, 0x3C, 0x18, // ❤
+    0x00, 0x66, 0x66, 0x66, 0x66, 0x66, 0x7E, 0x3C, // U
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // space
+};
+
+void test3()
+{
+    EA   = 1;
+    TMOD = 0x01;
+    TH0  = 0xFC;
+    TL0  = 0x67;
+    ET0  = 1;
+    TR0  = 1;
+    while (1);
+}
+
+void timer0ISF() interrupt 1
+{
+    static unsigned char i     = 0;
+    static unsigned char tmr   = 0;
+    static unsigned char index = 32;
+
+    TH0 = 0xFC;
+    TL0 = 0x67;
+
+    P2 = 0xFF;
+
+    switch_138(i);
+    i++;
+    P2 = ~display[index + i];
+    if (i >= 8) {
+        i = 0;
+    }
+
+    tmr++;
+    if (tmr >= 250) {
+        tmr = 0;
+        if (index == 0) {
+            index = 32;
+        } else {
+            index--;
+        }
+    }
+}
+
+void main()
+{
+    test3();
+}

homework7/src/test4.c

@@ -0,0 +1,87 @@
+/*
+ * @name: test4.c
+ * @author: msksbr
+ * @date: 2025-05-25
+ * @description: a test for homework7's homework tests
+ * @version: 1.0
+ * homework zh_CN: 点阵显示一个 I ❤ U 的向右移动动画
+ * homework EN: display a I ❤ U moving right animation on the led matrix
+ */
+
+#include "homework7.h"
+
+unsigned char code frames[30][8] = {
+    {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF},
+    {0xFF, 0x7F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x7F},
+    {0xFF, 0x3F, 0x7F, 0x7F, 0x7F, 0x7F, 0x7F, 0x3F},
+    {0xFF, 0x1F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x1F},
+    {0xFF, 0x0F, 0x9F, 0x9F, 0x9F, 0x9F, 0x9F, 0x0F},
+    {0xFF, 0x87, 0xCF, 0xCF, 0xCF, 0xCF, 0xCF, 0x87},
+    {0xFF, 0xC3, 0xE7, 0xE7, 0xE7, 0xE7, 0xE7, 0xC3},
+    {0xFF, 0xE1, 0x73, 0x73, 0x73, 0xF3, 0xF3, 0xE1},
+    {0xFF, 0x70, 0x39, 0x39, 0x39, 0x79, 0xF9, 0xF0},
+    {0xFF, 0x38, 0x1C, 0x1C, 0x1C, 0x3C, 0x7C, 0xF8},
+    {0xFF, 0x9C, 0x0E, 0x0E, 0x0E, 0x1E, 0x3E, 0x7C},
+    {0xFF, 0xCE, 0x07, 0x07, 0x07, 0x0F, 0x1F, 0x3E},
+    {0xFF, 0x67, 0x03, 0x03, 0x03, 0x07, 0x0F, 0x9F},
+    {0xFF, 0x33, 0x01, 0x01, 0x01, 0x03, 0x87, 0xCF},
+    {0xFF, 0x99, 0x00, 0x00, 0x00, 0x81, 0xC3, 0xE7},
+    {0xFF, 0xCC, 0x80, 0x80, 0x80, 0xC0, 0xE1, 0xF3},
+    {0xFF, 0xE6, 0xC0, 0xC0, 0xC0, 0xE0, 0xF0, 0xF9},
+    {0xFF, 0x73, 0x60, 0x60, 0x60, 0x70, 0x78, 0xFC},
+    {0xFF, 0x39, 0x30, 0x30, 0x30, 0x38, 0x3C, 0x7E},
+    {0xFF, 0x9C, 0x98, 0x98, 0x98, 0x9C, 0x1E, 0x3F},
+    {0xFF, 0xCE, 0xCC, 0xCC, 0xCC, 0xCE, 0x0F, 0x1F},
+    {0xFF, 0x67, 0x66, 0x66, 0x66, 0x67, 0x07, 0x0F},
+    {0xFF, 0x33, 0x33, 0x33, 0x33, 0x33, 0x03, 0x87},
+    {0xFF, 0x99, 0x99, 0x99, 0x99, 0x99, 0x81, 0xC3},
+    {0xFF, 0xCC, 0xCC, 0xCC, 0xCC, 0xCC, 0xC0, 0xE1},
+    {0xFF, 0xE6, 0xE6, 0xE6, 0xE6, 0xE6, 0xE0, 0xF0},
+    {0xFF, 0xF3, 0xF3, 0xF3, 0xF3, 0xF3, 0xF0, 0xF8},
+    {0xFF, 0xF9, 0xF9, 0xF9, 0xF9, 0xF9, 0xF8, 0xFC},
+    {0xFF, 0xFC, 0xFC, 0xFC, 0xFC, 0xFC, 0xFC, 0xFE},
+    {0xFF, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFF}};
+
+void test4()
+{
+    EA    = 1;
+    ENLED = 0;
+    ADDR3 = 0;
+    TMOD  = 0x01;
+    TH0   = 0xFC;
+    TL0   = 0x67;
+    ET0   = 1;
+    TR0   = 1;
+    while (1);
+}
+
+void InterruptTimer0() interrupt 1
+{
+    static unsigned char i     = 0;
+    static unsigned char tmr   = 0;
+    static unsigned char index = 29;
+
+    TH0 = 0xFC;
+    TL0 = 0x67;
+    P2  = 0xFF;
+    switch_138(i);
+    i++;
+    if (i >= 8) {
+        i = 0;
+    }
+    P2 = frames[index][i];
+    tmr++;
+    if (tmr >= 250) {
+        tmr = 0;
+        if (index == 0) {
+            index = 30;
+        } else {
+            index--;
+        }
+    }
+}
+
+void main()
+{
+    test4();
+}

homework7/src/test5.c

@@ -0,0 +1,65 @@
+/*
+ * @name: test5.c
+ * @author: msksbr
+ * @date: 2025-05-25
+ * @description: a test for homework7's homework tests
+ * @version: 1.0f: fix the bug that charset is RL reversed
+ * homework zh_CN: 基于点阵的 9 到 0 的倒计时秒表显示
+ * homework EN: display a countdown timer on the led matrix from 9 to 0
+ */
+
+#include "homework7.h"
+
+unsigned char code number_char[10][8] = {
+    {0x0E, 0x1B, 0x1B, 0x1B, 0x1B, 0x1B, 0x0E, 0x00}, // 0
+    {0x0C, 0x0F, 0x0C, 0x0C, 0x0C, 0x0C, 0x1F, 0x00}, // 1
+    {0x0F, 0x1B, 0x18, 0x1C, 0x0E, 0x07, 0x1F, 0x00}, // 2
+    {0x0F, 0x1B, 0x18, 0x1E, 0x18, 0x1B, 0x0F, 0x00}, // 3
+    {0x0C, 0x0C, 0x0E, 0x0F, 0x1F, 0x0C, 0x0C, 0x00}, // 4
+    {0x1F, 0x03, 0x0F, 0x18, 0x18, 0x1B, 0x0F, 0x00}, // 5
+    {0x1E, 0x07, 0x0F, 0x1B, 0x1B, 0x1F, 0x0E, 0x00}, // 6
+    {0x1F, 0x18, 0x1C, 0x0C, 0x0E, 0x06, 0x06, 0x00}, // 7
+    {0x0E, 0x1B, 0x1F, 0x1F, 0x1B, 0x1B, 0x0E, 0x00}, // 8
+    {0x0E, 0x1B, 0x1B, 0x1B, 0x1E, 0x1C, 0x0F, 0x00}  // 9
+};
+
+void test5()
+{
+    TMOD = 0x10;
+    TH1  = 0xFC;
+    TL1  = 0x18;
+    TR1  = 1;
+    ET1  = 1;
+    EA   = 1;
+    while (1);
+}
+
+void timer1_ISR() interrupt 3
+{
+    static unsigned char i           = 0;
+    static unsigned int count        = 0;
+    static unsigned char current_num = 9;
+
+    TH1 = 0xFC;
+    TL1 = 0x18;
+
+    P2 = 0xFF;
+    switch_138(i);
+    P2 = ~number_char[current_num][i];
+
+    if (++i >= 8) i = 0;
+
+    if (++count >= 1000) {
+        count = 0;
+        if (current_num > 0) {
+            current_num--;
+        } else {
+            current_num = 9;
+        }
+    }
+}
+
+void main()
+{
+    test5();
+}

homework8/.clang-format

@@ -0,0 +1,38 @@
+---
+BasedOnStyle: Microsoft
+Language: Cpp
+
+###################################
+#          indent conf
+###################################
+
+UseTab: Never
+IndentWidth: 4
+TabWidth: 4
+ColumnLimit: 0
+AccessModifierOffset: -4
+NamespaceIndentation: All
+FixNamespaceComments: false
+BreakBeforeBraces: Linux
+
+###################################
+#          other styles
+###################################
+
+# 
+# for more conf, you can ref: https://clang.llvm.org/docs/ClangFormatStyleOptions.html
+#
+
+AllowShortIfStatementsOnASingleLine: true
+
+AllowShortLoopsOnASingleLine: true
+
+AllowShortBlocksOnASingleLine: true
+
+IndentCaseLabels: true
+
+SortIncludes: false
+
+AlignConsecutiveMacros: AcrossEmptyLines
+
+AlignConsecutiveAssignments: Consecutive

homework8/.eide/eide.json

@@ -0,0 +1,80 @@
+{
+  "name": "homework8",
+  "type": "C51",
+  "dependenceList": [],
+  "srcDirs": [
+    "src"
+  ],
+  "virtualFolder": {
+    "name": "<virtual_root>",
+    "files": [],
+    "folders": []
+  },
+  "outDir": "build",
+  "deviceName": null,
+  "packDir": null,
+  "miscInfo": {
+    "uid": "4605848772e4bc90af79b39d074376ac"
+  },
+  "targets": {
+    "Debug": {
+      "excludeList": [],
+      "toolchain": "Keil_C51",
+      "compileConfig": {
+        "options": "null"
+      },
+      "uploader": "Custom",
+      "uploadConfig": {
+        "bin": "",
+        "commandLine": "",
+        "eraseChipCommand": ""
+      },
+      "uploadConfigMap": {},
+      "custom_dep": {
+        "name": "default",
+        "incList": [],
+        "libList": [],
+        "defineList": []
+      },
+      "builderOptions": {
+        "SDCC": {
+          "version": 3,
+          "beforeBuildTasks": [],
+          "afterBuildTasks": [],
+          "global": {
+            "device": "mcs51",
+            "optimize-type": "speed",
+            "use-non-free": false
+          },
+          "c/cpp-compiler": {
+            "language-c": "c99"
+          },
+          "asm-compiler": {},
+          "linker": {
+            "$mainFileName": "main",
+            "output-format": "hex"
+          }
+        },
+        "Keil_C51": {
+          "version": 2,
+          "beforeBuildTasks": [],
+          "afterBuildTasks": [],
+          "global": {
+            "ram-mode": "SMALL",
+            "rom-mode": "LARGE"
+          },
+          "c/cpp-compiler": {
+            "optimization-type": "SPEED",
+            "optimization-level": "level-8"
+          },
+          "asm-compiler": {},
+          "linker": {
+            "remove-unused": true,
+            "output-format": "elf"
+          }
+        }
+      }
+    }
+  },
+  "version": "3.5"
+}

homework8/.eide/files.options.yml

@@ -0,0 +1,20 @@
+##########################################################################################
+#                        Append Compiler Options For Source Files
+##########################################################################################
+
+# syntax:
+#   <your pattern>: <compiler options>
+# For get pattern syntax, please refer to: https://www.npmjs.com/package/micromatch
+#
+# examples:
+#   'main.cpp':           --cpp11 -Og ...
+#   'src/*.c':            -gnu -O2 ...
+#   'src/lib/**/*.cpp':   --cpp11 -Os ...
+#   '!Application/*.c':   -O0
+#   '**/*.c':             -O2 -gnu ...
+
+version: "2.0"
+options:
+    Debug:
+        files: {}
+        virtualPathFiles: {}

homework8/.gitignore

@@ -0,0 +1,15 @@
+# dot files
+/.vscode/launch.json
+/.settings
+/.eide/log
+/.eide.usr.ctx.json
+
+# project out
+/build
+/bin
+/obj
+/out
+
+# eide template
+*.ept
+*.eide-template

homework8/.vscode/settings.json

@@ -0,0 +1 @@
+{}

homework8/.vscode/tasks.json

@@ -0,0 +1,40 @@
+{
+    "version": "2.0.0",
+    "tasks": [
+        {
+            "label": "build",
+            "type": "shell",
+            "command": "${command:eide.project.build}",
+            "group": "build",
+            "problemMatcher": []
+        },
+        {
+            "label": "flash",
+            "type": "shell",
+            "command": "${command:eide.project.uploadToDevice}",
+            "group": "build",
+            "problemMatcher": []
+        },
+        {
+            "label": "build and flash",
+            "type": "shell",
+            "command": "${command:eide.project.buildAndFlash}",
+            "group": "build",
+            "problemMatcher": []
+        },
+        {
+            "label": "rebuild",
+            "type": "shell",
+            "command": "${command:eide.project.rebuild}",
+            "group": "build",
+            "problemMatcher": []
+        },
+        {
+            "label": "clean",
+            "type": "shell",
+            "command": "${command:eide.project.clean}",
+            "group": "build",
+            "problemMatcher": []
+        }
+    ]
+}

homework8/homework8.code-workspace

@@ -0,0 +1,44 @@
+{
+    "folders": [
+        {
+            "path": "."
+        }
+    ],
+    "settings": {
+        "files.autoGuessEncoding": true,
+        "C_Cpp.default.configurationProvider": "cl.eide",
+        "C_Cpp.errorSquiggles": "disabled",
+        "files.associations": {
+            ".eideignore": "ignore",
+            "*.a51": "a51",
+            "*.h": "c",
+            "*.c": "c",
+            "*.hxx": "cpp",
+            "*.hpp": "cpp",
+            "*.c++": "cpp",
+            "*.cpp": "cpp",
+            "*.cxx": "cpp",
+            "*.cc": "cpp"
+        },
+        "[yaml]": {
+            "editor.insertSpaces": true,
+            "editor.tabSize": 4,
+            "editor.autoIndent": "advanced"
+        }
+    },
+    "extensions": {
+        "recommendations": [
+            "cl.eide",
+            "keroc.hex-fmt",
+            "xiaoyongdong.srecord",
+            "hars.cppsnippets",
+            "zixuanwang.linkerscript",
+            "redhat.vscode-yaml",
+            "IBM.output-colorizer",
+            "cschlosser.doxdocgen",
+            "ms-vscode.vscode-serial-monitor",
+            "alefragnani.project-manager",
+            "cl.stm8-debug"
+        ]
+    }
+}

homework8/src/homework1.c

@@ -0,0 +1,29 @@
+#include <reg52.h>
+sbit ADDR0 = P1 ^ 0;
+sbit ADDR1 = P1 ^ 1;
+sbit ADDR2 = P1 ^ 2;
+sbit ADDR3 = P1 ^ 3;
+sbit ENLED = P1 ^ 4;
+sbit LED9  = P0 ^ 7;
+sbit LED8  = P0 ^ 6;
+sbit LED7  = P0 ^ 5;
+sbit LED6  = P0 ^ 4;
+sbit KEY1  = P2 ^ 4;
+sbit KEY2  = P2 ^ 5;
+sbit KEY3  = P2 ^ 6;
+sbit KEY4  = P2 ^ 7;
+void main()
+{
+    ENLED = 0;
+    ADDR3 = 1;
+    ADDR2 = 1;
+    ADDR1 = 1;
+    ADDR0 = 0;
+    P2    = 0xF7;
+    while (1) {
+        LED9 = KEY1;
+        LED8 = KEY2;
+        LED7 = KEY3;
+        LED6 = KEY4;
+    }
+}