1 單片機單片機 C 語言代碼手冊語言代碼手冊 1 LED 燈燈 點亮一個點亮一個 LED include void main while 1 P0 0 x01 P2 0 x7d 流水燈閃爍流水燈閃爍 include sbit LED P0 0 void delay unsigned int i unsigned int j for i i 0 i for j 110 j 0 j void main LED 0 delay 60 LED 1 delay 10 流水燈流水燈 左移左移 include include unsigned char aa void delay unsigned int xms unsigned int i j for i xms i 0 i for j 110 j 0 j void main aa 0 xfe while 1 P0 aa delay 1000 aa crol aa 1 跑馬燈跑馬燈 include include void delayms unsigned char ms unsigned char i while ms for i 0 i 120 i void main unsigned char LED LED 0 xfe 11111110 P2 LED while 1 delayms 250 LED crol LED 1 循環右移 1位 點亮下一個LED P2 LED 用循環移位指令實現用循環移位指令實現 LED 流水燈效果流水燈效果 include include void delayms unsigned char i 延時子程序 unsigned char j while i for j 0 j 120 j void main unsigned char LED LED 0 xfe 0 xfe 1111 1110 while 1 P2 LED delayms 250 LED LED 1 循環右移 1 位 點亮下一個 LED 為左移 位 if LED 0 x00 LED 0 xfe 0 xfe 1111 1110 左右跑馬燈左右跑馬燈 include void delay unsigned int i unsigned char j for i i 0 i for j 255 j 0 j char LED void main unsigned char i while 1 LED 0 xfe for i 0 i 8 i P2 LED delay 500 LED LED 1 左移 LED LED 0 x01 移位后 后面的位為高電平 2 if LED 0 x7f break 提前退出 FOR 循環 for i 0 i 1 右移 LED LED 0 x80 移位后 后面的位為高電平 LED 作二進制加法作二進制加法 include void delay unsigned int i unsigned char j for i i 0 i for j 255 j 0 j void main unsigned char Num 0 xff while 1 P2 Num delay 1000 Num LED 閃爍閃爍 定時器定時器 include include unsigned char num aa 0 xfe void main TMOD 0 x01 TH0 65536 45872 256 TL0 65536 45872 256 EA 1 ET0 1 TR0 1 while 1 if num 1 num 0 P2 aa aa crol aa 1 void T0 time interrupt 1 TH0 65536 45872 256 TL0 65536 45872 256 num 2 數碼管數碼管 0 9 顯示顯示 include void delay2ms unsigned int delaytime unsigned int cnt for cnt 0 cnt9 cnt 0 delay2ms 2500 95 顯示顯示 include void delay2ms unsigned int delaytime unsigned int cnt for cnt 0 cnt delaytime 50 cnt unsigned char s 10 0 x3f 0 x06 0 x5b 0 x4f 0 x66 0 x6d 0 x7d 0 x07 0 x7f 0 x6f main unsigned char num 95 unsigned char cnt 0 while 1 switch cnt 2 case 0 P0 0 x02 P2 s num 10 break case 1 P0 0 x04 P2 s num 10 break delay2ms 1 138 片選實現動態顯示片選實現動態顯示 include include sbit LS138A P2 2 定義LS138譯碼器的輸入A腳由P2 2控制 sbit LS138B P2 3 定義LS138譯碼器的輸入 B腳由P2 3控制 sbit LS138C P2 4 定義LS138譯碼器的輸入 C腳由P2 4控制 void delay unsigned int i 函數聲名 char cnt unsigned char code Disp Tab 共陰數碼管 0 9 0 x3f 0 x06 0 x5b 0 x4f 0 x66 0 x6d 0 x7d 0 x07 0 x7f 0 x6f 0 x40 void main 3 unsigned int i j 1 unsigned int led 10 cnt 0 while 1 進入循環狀態 if cnt 50 cnt 0 延時計數 每掃描一次加一次 j 每隔 50 個掃描周期加一次 led 0 Disp Tab j 10000 1000 0 x80 led 1 Disp Tab j 1000 100 0 x80 led 2 Disp Tab j 100 10 0 x80 led 3 Disp Tab j 10 0 x80 led 4 Disp Tab j 10000 1000 千位 led 5 Disp Tab j 1000 100 百位帶小數點 led 6 Disp Tab j 100 10 十位 led 7 Disp Tab j 10 個位 for i 0 i 0 i for j 200 j 0 j 單片機直接片選實現動態顯示單片機直接片選實現動態顯示 include include void delay unsigned int i 函數聲名 char DelayCNT 定義變量 unsigned char code Disp Tab 共陰數碼管 0 9 0 x3f 0 x06 0 x5b 0 x4f 0 x66 0 x6d 0 x7d 0 x07 0 x7f 0 x6f 0 x40 段碼控制 unsigned char code dispbit 8 共陰數碼管 1 8 個 0 xfe 0 xfd 0 xfb 0 xf7 0 xef 0 xdF 0 xbF 0 x7F 位選控制 查表法 void main unsigned int i LedNumVal 1 變量定義 unsigned int LedOut 10 變量定義 DelayCNT 0 while 1 if DelayCNT 20 控制數字變化速度 DelayCNT 0 20 個掃描周期清零一次 LedNumVal 每隔 20 個掃描周期加一次 LedOut 0 Disp Tab LedNumVal 10000 1000 LedOut 1 Disp Tab LedNumVal 1000 100 0 x80 LedOut 2 Disp Tab LedNumVal 100 10 LedOut 3 Disp Tab LedNumVal 10 LedOut 4 Disp Tab LedNumVal 10000 1000 千位 LedOut 5 Disp Tab LedNumVal 1000 100 0 x80 百位小數 LedOut 6 Disp Tab LedNumVal 100 10 十位 LedOut 7 Disp Tab LedNumVal 10 個位 for i 0 i 0 i for j 200 j 0 j 動態動態 靜態靜態 LED include include sbit LED8 1 P1 1 J14 接在 P1 1 上 void delay unsigned int i 函數聲名 char DelayCNT char LED void main LED 0 x01 DelayCNT 0 while 1 if DelayCNT 10 點亮動靜 LED 燈速度控制 DelayCNT 0 LED LED 0 i for j 200 j 0 j 數碼管數碼管 138 動態顯示動態顯示 include define uint unsigned int define uchar unsigned char sbit LS138A P2 2 sbit LS138B P2 3 sbit LS138C P2 4 uchar code led 8 void delay uint xms uint i j for i xms i 0 i for j 110 j 0 j uchar code table 0 x3f 0 x06 0 x5B 0 x4f 0 x66 0 x6d 0 x7d 0 x07 0 x7f 0 x6f void main while 1 進入循環狀態 uint cnt j LS138A 1 LS138B 1 LS138C 1 if cnt 50 cnt 0 延時計數 每掃描一次加一次 j 每隔 50 個掃描周期加一次 led 0 table j 10000 1000 led 1 table j 1000 100 led 2 table j 100 10 led 3 table j 10 led 4 table j 10000 1000 千位 led 5 table j 1000 100 百位帶小數點 led 6 table j 100 10 十位 led 7 table j 10 個位 數碼管數碼管 依次顯示依次顯示 0 F include unsigned char code table 共陽數碼管 0 x3F 0 x06 0 x5B 0 x4F 0 x66 0 x6D 0 x7D 0 x07 0 x7F 0 x6F 0 x77 0 x7C 0 x39 0 x5E 0 x79 0 x71 void delay unsigned int xms unsigned int i j for i xms i 0 i for j 110 j 0 j void main unsigned char cnt while 1 for cnt 0 cnt 16 cnt P0 table cnt delay 100 數碼管數碼管 直選動態顯示直選動態顯示 include unsigned char code dispiaybit 0 xfe 0 xfd 0 xfb 0 xf7 0 xef 0 xdf 0 xbf 0 x7f unsigned char code table 0 x06 0 x5B 0 x4f 0 x66 0 x6d 0 x7d 0 x07 0 x7f 0 x6f void delay unsigned int xms unsigned int i j for i xms i 0 i for j 110 j 0 j void main unsigned char m while 1 for m 0 m 8 m P0 table m P1 dispiaybit m delay 1 數碼管秒表數碼管秒表 include void delay int xms unsigned int cnt for cnt 0 cnt 250 num cnt 0 一位靜態顯示一位靜態顯示 include include define NOP nop 定義空指令 void delay unsigned int i 函數聲名 unsigned char code LED7Code 共陽極 0 x3F 0 x06 0 x5B 0 x4F 0 x66 0 x6D 0 x7D 0 x07 0 x7F 0 x6F 0 x77 0 x7C 0 x39 0 x5E 0 x79 0 x71 void main unsigned int LedNumVal 1 C 定義變量 while 1 if C 300 LedNumVal 每隔 300 個掃描周期加一次 C 0 每隔 300 個掃描清零 將字模送到 P0 口顯示 P0 LED7Code LedNumVal 10 LED7 0 x7f 為小數點 共陰和共陽此處不一樣 delay 150 調用延時程序 void delay unsigned int i char j for i i 0 i for j 200 j 0 j 3 蜂鳴器蜂鳴器 嘀嘀嘀嘀 include sbit buzz P3 4 main TMOD 0 x01 TH0 1000 256 TL0 1000 256 EA 1 ET0 1 TR0 1 for void T0 irq void interrupt 1 using 1 TH0 300 256 TL0 300 256 buzz buzz PZ 蜂鳴器蜂鳴器 include sbit beep P1 5 void delay unsigned int xms unsigned int i j for i xms i 0 i for j 110 j 0 j void main beep 1 delay 1 beep 0 delay 1 八月桂花八月桂花 本例采用 89C52 晶振為 11 0592MHZ 關于如何編制音樂代碼 其實十分簡單 各位可以看以下代碼 頻率常數即音樂術語中的音調 而節拍常數即音樂術語中的多少拍 include include sbit Beep P1 5 unsigned char n 0 n 為節拍常數變量 unsigned char code music tab 格式為 頻率常數 節拍常 數 頻率常數 節拍常數 0 x18 0 x30 0 x1C 0 x10 0 x20 0 x40 0 x1C 0 x10 0 x18 0 x10 0 x20 0 x10 0 x1C 0 x10 0 x18 0 x40 0 x1C 0 x20 0 x20 0 x20 0 x1C 0 x20 0 x18 0 x20 0 x20 0 x80 0 xFF 0 x20 0 x30 0 x1C 0 x10 0 x18 0 x20 0 x15 0 x20 0 x1C 0 x20 0 x20 0 x20 0 x26 0 x40 0 x20 0 x20 0 x2B 0 x20 0 x26 0 x20 0 x20 0 x20 0 x30 0 x80 0 xFF 0 x20 0 x20 0 x1C 0 x10 0 x18 0 x10 0 x20 0 x20 0 x26 0 x20 0 x2B 0 x20 0 x30 0 x20 0 x2B 0 x40 0 x20 0 x20 0 x1C 0 x10 0 x18 0 x10 0 x20 0 x20 0 x26 0 x20 0 x2B 0 x20 0 x30 0 x20 0 x2B 0 x40 0 x20 0 x30 0 x1C 0 x10 0 x18 0 x20 0 x15 0 x20 0 x1C 0 x20 0 x20 0 x20 0 x26 0 x40 0 x20 0 x20 0 x2B 0 x20 0 x26 0 x20 0 x20 0 x20 0 x30 0 x80 6 0 x20 0 x30 0 x1C 0 x10 0 x20 0 x10 0 x1C 0 x10 0 x20 0 x20 0 x26 0 x20 0 x2B 0 x20 0 x30 0 x20 0 x2B 0 x40 0 x20 0 x15 0 x1F 0 x05 0 x20 0 x10 0 x1C 0 x10 0 x20 0 x20 0 x26 0 x20 0 x2B 0 x20 0 x30 0 x20 0 x2B 0 x40 0 x20 0 x30 0 x1C 0 x10 0 x18 0 x20 0 x15 0 x20 0 x1C 0 x20 0 x20 0 x20 0 x26 0 x40 0 x20 0 x20 0 x2B 0 x20 0 x26 0 x20 0 x20 0 x20 0 x30 0 x30 0 x20 0 x30 0 x1C 0 x10 0 x18 0 x40 0 x1C 0 x20 0 x20 0 x20 0 x26 0 x40 0 x13 0 x60 0 x18 0 x20 0 x15 0 x40 0 x13 0 x40 0 x18 0 x80 0 x00 void int0 interrupt 1 采用中斷 0 控制節拍 TH0 0 xd8 TL0 0 xef n void delay unsigned char m 控制頻率延時 unsigned i 3 m while i void delayms unsigned char a 豪秒延時子程序 while a 采用 while a 不要采用 while a 各位可編譯一下看看匯編結果就知道 了 void main unsigned char p m m 為頻率常數變量 unsigned char i 0 TMOD TMOD 0 x01 TH0 0 xd8 TL0 0 xef IE 0 x82 play while 1 a p music tab i if p 0 x00 i 0 delayms 1000 goto play 如果碰到結束符 延時 1 秒 回到開始再來一遍 else if p 0 xff i i 1 delayms 100 TR0 0 goto a 若碰到休止符 延時 100ms 繼續取下一音符 else m music tab i n music tab i 取頻率常數 和 節拍常數 TR0 1 開定時器 1 while n 0 Beep Beep delay m 等待節拍完成 通過 P1 口輸出音頻 可多聲道 哦 TR0 0 關定時器 1 5 繼電器繼電器 按鍵控制繼電器按鍵控制繼電器 include sbit RELAY P1 4 定義繼電器對應單片機管腳 sbit K1 P2 7 定義按鈕對應單片機管腳 void main if K1 RELAY 0 按鈕按下 開啟繼電器 else RELAY 1 按鈕松開 關閉繼電器 4 按鍵按鍵 模擬開關模擬開關 include sbit K1 P3 0 sbit L1 P2 0 void delay unsigned int i unsigned int j for i i 0 i for j 110 j 0 j void main while 1 if K1 0 delay 100 if K1 0 L1 L1 while K1 按鍵鍵狀態顯示按鍵鍵狀態顯示 include include sbit BEEP P1 5 sbit RELAY P1 4 sbit K1 P0 0 sbit K2 P0 1 sbit K3 P0 2 sbit K4 P0 3 sbit K5 P0 4 sbit K6 P0 5 void beep main while 1 P2 0 xff if K1 0 7 P2 0 xfe if K2 0 P2 0 xfd if K3 P2 0 xfb if K4 P2 0 xf7 if K5 beep 喇叭發聲 RELAY 1 if K6 RELAY 0 通過了反相器 void beep unsigned char i j for i 0 i 100 i BEEP BEEP BEEP 取反 for j 0 j 250 j 需要產生方波 nop BEEP 1 關閉蜂鳴器 按鍵移位按鍵移位 include include void delayms unsigned char ms void proc key unsigned char key v void delayms unsigned char ms unsigned char i while ms for i 0 i 120 i sbit K1 P0 0 對應按鈕 K1 sbit K2 P0 1 對應按鈕 K2 void main unsigned char key s key v key v 0 x03 P2 0 xfe while 1 key s scan key if key s key v delayms 10 key s scan key if key s key v key v key s proc key key v unsigned char scan key unsigned char key s key s 0 x00 key s K2 key s 1 key s K1 return key s void proc key unsigned char key v if key v else if key v 6 定時器定時器 中斷中斷 蜂鈴器蜂鈴器 timer1 include include sbit Beep P1 5 unsigned int USE C void main TMOD 0 x10 定時 計數器 1 工作于方式 1 TH0 0 x4C TL0 0 x00 50ms 定時常數 EA 1 開總中斷 ET1 1 允許定時 計數器 1 中斷 TR1 1 啟動定時 計數器 1 中斷 while 1 void Time1 void interrupt 3 TH1 0 x4c 50ms 定時 TL1 0 x00 if USE C 20 每隔 1 秒發聲 Beep Beep USE C 0 中斷中斷 0 計數計數 1 位數碼管顯示位數碼管顯示 include include unsigned int LedNumVal 此表為 LED 的字模 0 1 2 3 4 5 6 7 8 9 A b c d E L P U Hidden 20 unsigned char code Disp Tab 0 xC0 0 xF9 0 xA4 0 xB0 0 x99 0 x92 0 x82 0 xF8 0 x80 0 x90 0 x88 0 x83 0 xC6 0 xA1 0 x86 0 xbf 0 xc7 0 x8c 0 xc1 0 xff 0 xf7 8 void main void IT0 0 低電平觸發 IT0 1 下降沿觸發 EA 1 EX0 1 while 1 P0 Disp Tab LedNumVal 10 INT0 中斷函數 void counter void interrupt 0 EX0 0 LedNumVal 中斷計數 EX0 1 中斷中斷 0 計數計數 4 位數碼管顯示位數碼管顯示 試驗 4 位數碼管上顯示外部中斷計數 include include sbit LS138A P2 2 sbit LS138B P2 3 sbit LS138C P2 4 unsigned int LedNumVal 0 LedOut 8 此表為 LED 的字模 0 1 2 3 4 5 6 7 8 9 A b c d E L P U Hidden 20 unsigned char code Disp Tab 0 xC0 0 xF9 0 xA4 0 xB0 0 x99 0 x92 0 x82 0 xF8 0 x80 0 x9 0 0 x88 0 x83 0 xC6 0 xA1 0 x86 0 xbf 0 xc7 0 x8c 0 xc1 0 xff 0 xf7 void delay unsigned int i char j for i i 0 i for j 200 j 0 j display unsigned char i LedOut 0 Disp Tab LedNumVal 10000 1000 LedOut 1 Disp Tab LedNumVal 1000 100 LedOut 2 Disp Tab LedNumVal 100 10 LedOut 3 Disp Tab LedNumVal 10 for i 0 i 8 i P0 LedOut i switch i case 0 LS138A 0 LS138B 0 LS138C 0 break case 1 LS138A 1 LS138B 0 LS138C 0 break case 2 LS138A 0 LS138B 1 LS138C 0 break case 3 LS138A 1 LS138B 1 LS138C 0 break case 4 LS138A 0 LS138B 0 LS138C 1 break case 5 LS138A 1 LS138B 0 LS138C 1 break case 6 LS138A 0 LS138B 1 LS138C 1 break case 7 LS138A 1 LS138B 1 LS138C 1 break delay 150 void main void P0 0 xff P1 0 xff P2 0 xff IT0 0 低電平觸發 IT0 1 下降沿觸發 EA 1 EX0 1 while 1 display INT0 中斷函數 void counter void interrupt 0 EX0 0 LedNumVal 中斷計數 EX0 1 INT0 INT1 include include sbit LS138A P2 2 sbit LS138B P2 3 sbit LS138C P2 4 unsigned int LedNumVal 1 LedNumVal 2 LedOut 8 unsigned char code Disp Tab 共陰數碼管 0 9 0 x3f 0 x06 0 x5b 0 x4f 0 x66 0 x6d 0 x7d 0 x07 0 x7f 0 x6f 0 x40 void delay unsigned int i char j for i i 0 i for j 200 j 0 j void main void unsigned char i P0 0 xff P1 0 xff P2 0 xff IT0 0 低電平觸發 IT0 1 下降沿觸發 EX0 1 IT1 0 低電平觸發 IT1 1 下降沿觸發 9 EX1 1 EA 1 while 1 LedOut 0 Disp Tab LedNumVal 1 10000 1000 LedOut 1 Disp Tab LedNumVal 1 1000 100 0 x80 0 x7f 小數點 LedOut 2 Disp Tab LedNumVal 1 100 10 LedOut 3 Disp Tab LedNumVal 1 10 LedOut 4 Disp Tab LedNumVal 2 10000 1000 LedOut 5 Disp Tab LedNumVal 2 1000 100 LedOut 6 Disp Tab LedNumVal 2 100 10 LedOut 7 Disp Tab LedNumVal 2 10 for i 0 i 8 i P0 LedOut i switch i case 0 LS138A 0 LS138B 0 LS138C 0 break case 1 LS138A 1 LS138B 0 LS138C 0 break case 2 LS138A 0 LS138B 1 LS138C 0 break case 3 LS138A 1 LS138B 1 LS138C 0 break case 4 LS138A 0 LS138B 0 LS138C 1 break case 5 LS138A 1 LS138B 0 LS138C 1 break case 6 LS138A 0 LS138B 1 LS138C 1 break case 7 LS138A 1 LS138B 1 LS138C 1 break delay 150 INT0 中斷函數 void counter0 void interrupt 0 EX0 0 delay 100 LedNumVal 1 EX0 1 INT1 中斷函數 void counter1 void interrupt 2 EX1 0 delay 100 LedNumVal 2 EX1 1 T0 數碼管數碼管 include char num unsigned char Led 10 0 x3f 0 x06 0 x5B 0 x4f 0 x66 0 x6d 0 x7d 0 x07 0 x7f 0 x6f void main TMOD 0 x01 EA 1 ET0 1 TR0 1 TH0 65536 45872 256 TL0 65536 45872 256 while 1 void T0 time interrupt 1 TH0 65536 45872 256 TL0 65536 45872 256 num if num 200 num 0 P0 0 x1e P2 Led 1 TIMEER0 試驗數碼管上顯示定時器中斷計數 include include sbit LS138A P2 2 定義 138 管腳 sbit LS138B P2 3 sbit LS138C P2 4 unsigned int LedNumVal LedOut 8 此表為 LED 的字模 0 1 2 3 4 5 6 7 8 9 A b c d E L P U Hidden 20 unsigned char code Disp Tab 0 xC0 0 xF9 0 xA4 0 xB0 0 x99 0 x92 0 x82 0 xF8 0 x80 0 x9 0 0 x88 0 x83 0 xC6 0 xA1 0 x86 0 xbf 0 xc7 0 x8c 0 xc1 0 xff 0 xf7 系統初始化 void system Ini TMOD 0 x11 TH1 0 x1C 12 000M TL1 0 x18 IE 0 x8A TR1 1 void delay unsigned int i char j for i i 0 i for j 200 j 0 j void main system Ini while 1 unsigned char i LedOut 0 Disp Tab LedNumVal 10000 1000 LedOut 1 Disp Tab LedNumVal 1000 100 LedOut 2 Disp Tab LedNumVal 100 10 LedOut 3 Disp Tab LedNumVal 10 for i 0 i 500 計數 500 次 IntCnt 0 SecFlag 1 switch Counter 5 case 1 P0 0 x02 0000 0010 P2 LedSeg Sec 10 break case 2 P0 0 x04 0000 0100 P2 LedSeg Sec 10 break case 3 P0 0 x08 0000 1000 P2 LedSeg Min 10 break case 4 P0 0 x10 0001 0000 P2 LedSeg Min 10 break void InitTime 中斷定時初始化 TMOD 0 x01 GATE C T M1 M0 GATE C T M1 M0 設置為定時器 0 的工作方式 1 0 0 0 0 0 0 0 1 TH0 0 xf8 裝載初值 TL0 0 xcd TCON 0 x10 TF1 TR1 TF0 TR0 0000 控制啟停 0 0 0 1 IE 0 x82 EA 00 ES ET1 EX1 ET0 EX0 中斷允許控制 E enable 1 00 0 0 0 1 0 void main unsigned int Counter 0 bit StopFlag 0 0 Time Run 1 Time Stop InitTime 初始化單片機內部的定時器 以中斷方式工作在 16 位模式 while 1 if StopFlag 0 走時 if SecFlag 計時程序 SecFlag 0 if Sec 59 Sec 0 if Min 59 Min 0 定時器定時器 按鍵按鍵 include reg51 h bit SecFlag 0 sbit TIMESTOP K P1 0 void Delay2ms unsigned int DelayTime 軟件延時 unsigned int Count for Count 0 Count 500 計數 500 次 IntCnt 0 SecFlag 1 switch Counter 5 11 case 1 P0 0 x02 0000 0010 P2 LedSeg Sec 10 break case 2 P0 0 x04 0000 0100 P2 LedSeg Sec 10 break case 3 P0 0 x08 0000 1000 P2 LedSeg Min 10 break case 4 P0 0 x10 0001 0000 P2 LedSeg Min 10 break void InitTime 硬件延時 TMOD 0 x01 GATE C T M1 M0 GATE C T M1 M0 設置為定時器 0 的工作方式 1 0 0 0 0 0 0 0 1 TH0 0 xf8 裝載初值 TL0 0 xcd TCON 0 x10 TF1 TR1 TF0 TR0 0000 控制啟停 0 0 0 1 IE 0 x82 EA 00 ES ET1 EX1 ET0 EX0 E enable 中斷允許控制 1 00 0 0 0 1 0 void main unsigned int Counter 0 bit StopFlag 0 0 Time Run 1 Time Stop InitTime 初始化單片機內部的定時器 以中斷方式工作在 16 位模式 while 1 if StopFlag 0 走時 if SecFlag 計時程序 SecFlag 0 if Sec 59 Sec 0 if Min 59 Min 0 按鍵工作 讓走時停止 StopFlag 1 if TIMESTOP K 0 Delay2ms 5 while TIMESTOP K 0 StopFlag StopFlag 7 LED 點陣點陣 顯示數字顯示數字 LED 點陣實驗 流動顯示 1 2 3 4 5 6 7 8 9 include unsigned char code tab 0 xfe 0 xfd 0 xfb 0 xf7 0 xef 0 xdf 0 xbf 0 x7f unsigned char code digittab 18 8 0 x00 0 x00 0 x3e 0 x41 0 x41 0 x41 0 x3e 0 x00 0 0 x00 0 x00 0 x00 0 x00 0 x21 0 x7f 0 x01 0 x00 1 0 x00 0 x00 0 x27 0 x45 0 x45 0 x45 0 x39 0 x00 2 0 x00 0 x00 0 x22 0 x49 0 x49 0 x49 0 x36 0 x00 3 0 x00 0 x00 0 x0c 0 x14 0 x24 0 x7f 0 x04 0 x00 4 0 x00 0 x00 0 x72 0 x51 0 x51 0 x51 0 x4e 0 x00 5 0 x00 0 x00 0 x3e 0 x49 0 x49 0 x49 0 x26 0 x00 6 0 x00 0 x00 0 x40 0 x40 0 x40 0 x4f 0 x70 0 x00 7 0 x00 0 x00 0 x36 0 x49 0 x49 0 x49 0 x36 0 x00 8 0 x00 0 x00 0 x32 0 x49 0 x49 0 x49 0 x3e 0 x00 9 0 x00 0 x00 0 x7F 0 x48 0 x48 0 x30 0 x00 0 x00 P 0 x00 0 x00 0 x7F 0 x48 0 x4C 0 x73 0 x00 0 x00 R 0 x00 0 x00 0 x7F 0 x49 0 x49 0 x49 0 x00 0 x00 E 0 x00 0 x00 0 x3E 0 x41 0 x41 0 x62 0 x00 0 x00 C 0 x00 0 x00 0 x7F 0 x08 0 x08 0 x7F 0 x00 0 x00 H 0 x00 0 x00 0 x00 0 xFF 0 xFF 0 x00 0 x00 0 x00 I 0 x00 0 x7F 0 x10 0 x08 0 x04 0 x7F 0 x00 0 x00 N 0 x7C 0 x48 0 x48 0 xFF 0 x48 0 x48 0 x7C 0 x00 中 unsigned int timecount unsigned char cnta unsigned char cntb void main void TMOD 0 x01 TH0 65536 3000 256 TL0 65536 3000 256 TR0 1 開啟定時 0 ET0 1 EA 1 開啟中斷 cntb 0 while 1 void t0 void interrupt 1 using 0 TH0 65536 3000 256 定時器高位裝載數據 TL0 65536 3000 256 定時器低位裝載數據 if cntb 8 cnta 0 if timecount 333 timecount 0 if cntb 36 cntb 0 滾動滾動 LED 點陣實驗 左右上下流動顯示 include unsigned char code taba 0 xfe 0 xfd 0 xfb 0 xf7 0 xef 0 xdf 0 xbf 0 x7f unsigned char code tabb 0 x01 0 x02 0 x04 0 x08 0 x10 0 x20 0 x40 0 x80 void delay1 void unsigned char i j k for k 10 k 0 k for i 20 i 0 i for j 248 j 0 j void main void unsigned char i j while 1 for j 0 j 3 j from left to right 3 time for i 0 i 8 i P2 taba i P0 0 xff delay1 for j 0 j 3 j from right to left 3 time for i 0 i 8 i P2 taba 7 i P0 0 xff delay1 for j 0 j 3 j from top to bottom 3 time for i 0 i 8 i P2 0 x00 P0 tabb 7 i delay1 for j 0 j 3 j from bottom to top 3 time for i 0 i 8 i P2 0 x00 P0 tabb i delay1 8 1602 液晶液晶 靜態顯示靜態顯示 include define uchar unsigned char define uint unsigned int uchar code table1 LIJUNLIN1988 12 uchar code table2 TEL 13402989513 15 sbit E P2 7 sbit RS P2 6 sbit R P2 5 uchar num void delay uint x uint y for x x 0 x for y 110 y 0 y void write com uchar com 寫指令 RS 0 P0 com delay 5 E 1 delay 5 E 0 void write data uchar date 寫數據 RS 1 P0 date delay 5 E 1 delay 5 E 0 void init 初始化 E 0 write com 0 x38 write com 0 x0e write com 0 x06 write com 0 x01 write com 0 x80 void main R 0 init for num 0 num 12 num write data table1 num delay 20 write com 0 x80 0 x40 13 for num 0 num 15 num write data table2 num delay 20 while 1 動態顯示動態顯示 include define uchar unsigned char define uint unsigned int uchar code table1 LIJUNLIN 8 uchar code table2 13402989513 11 sbit E P2 7 sbit RS P2 6 sbit R P2 5 uchar num void delay uint x uint y for x x 0 x for y 110 y 0 y void write com uchar com 寫指令 RS 0 P0 com delay 5 E 1 delay 5 E 0 void write data uchar date 寫數據 RS 1 P0 date delay 5 E 1 delay 5 E 0 void init 初始化 E 0 write com 0 x38 write com 0 x0e write com 0 x06 write com 0 x01 write com 0 x80 0 x10 void main R 0 init for num 0 num 8 num write data table1 num delay 20 write com 0 x80 0 x53 for num 0 num 11 num write data table2 num delay 20 for num 0 num 16 num write com 0 x18 delay 20 while 1 滾動顯示滾動顯示 1 從左到右逐字顯示 閃動二次 清屏 2 再從右到左逐字顯示 閃動二次 清屏 3 周期性地重復上述顯示方式 include include typedef unsigned char BYTE typedef bit BOOL sbit LCD RS P2 6 sbit LCD RW P2 5 sbit LCD EP P2 7 BYTE code dis1 WELCOME TO BYTE code dis2 WWW PRECHIN COM BYTE code dis3 OT EMOCLEW BYTE code dis4 MOC NIHCERP WWW delay int ms 延時子程序 int i while ms for i 0 i 250 i nop nop nop nop BOOL lcd bz 測試 LCD 忙碌狀態 BOOL result LCD RS 0 LCD RW 1 LCD EP 1 nop nop nop nop result BOOL P0 LCD EP 0 return result lcd wcmd BYTE cmd 寫入指令數據到 LCD while lcd bz LCD RS 0 14 LCD RW 0 LCD EP 0 nop nop P0 cmd nop nop nop nop LCD EP 1 nop nop nop nop LCD EP 0 lcd pos BYTE pos 設定顯示位置 lcd wcmd pos 0 x80 lcd wdat BYTE dat 寫入字符顯示數據到 LCD while lcd bz LCD RS 1 LCD RW 0 LCD EP 0 P0 dat nop nop nop nop LCD EP 1 nop nop nop nop LCD EP 0 lcd init LCD 初始化設定 lcd wcmd 0 x38 16 2 顯示 5 7 點陣 8 位數據 delay 1 lcd wcmd 0 x0c 顯示開 關光標 delay 1 lcd wcmd 0 x06 移動光標 delay 1 lcd wcmd 0 x01 清除 LCD 的顯示內容 delay 1 main BYTE i lcd init 初始化 LCD delay 10 while 1 lcd wcmd 0 x06 向右移動光標 lcd pos 0 設置顯示位置為第一行的第 1 個字符 i 0 while dis1 i 0 顯示字符 WLCOME TO lcd wdat dis1 i i delay 30 控制兩字之間顯示速度 lcd pos 0 x40 設置顯示位置為第二行第 1 個字符 i 0 while dis2 i 0 lcd wdat dis2 i 顯示字 WWW PRECHIN COM i delay 30 控制兩字之間顯示速度 delay 800 控制停留時間 lcd wcmd 0 x01 清除 LCD 的顯示內容 delay 1 lcd wcmd 0 x04 向左移動光標 lcd pos 15 設置顯示位置為第一行的第 16 個字符 i 0 while dis3 i 0 顯示字符 WLCOME TO lcd wdat dis3 i i delay 30 控制兩字之間顯示速度 lcd pos 0 x4F 設置顯示位置為第二行的第 16 個字符 i 0 while dis4 i 0 lcd wdat dis4 i 顯示字 WWW PRECHIN COM i delay 30 控制兩字之間顯示速度 delay 800 控制停留時間 lcd wcmd 0 x01 清除 LCD 的顯示內容 delay 200 控制兩屏轉換時間 歡迎顯示歡迎顯示 1602 字符型 LCD 顯示演示程序 在第一行顯示 welcome 在第二行顯示 www PRECHIN com include include typedef unsigned char BYTE typedef unsigned int WORD typedef bit BOOL sbit rs P2 6 sbit rw P2 5 sbit ep P2 7 BYTE code dis1 welcome BYTE code dis2 www PRECHIN com delay BYTE ms 延時子程序 BYTE i while ms for i 0 i 250 i nop nop nop nop 15 BOOL lcd bz 測試 LCD 忙碌狀態 BOOL result rs 0 rw 1 ep 1 nop nop nop nop result BOOL P0 ep 0 return result lcd wcmd BYTE cmd 寫入指令數據到 LCD while lcd bz rs

展開閱讀全文

與50位技術專家面對面20年技術見證，附贈技術全景圖

總結

以上是生活随笔為你收集整理的c语言错误 xef代表什么,单片机C语言代码手册 含100多个经典C程序的全部內容，希望文章能夠幫你解決所遇到的問題。

如果覺得生活随笔網站內容還不錯，歡迎將生活随笔推薦給好友。