WebOct 10, 2024 · The EN pin of an LCD is connected to the P2.2 pin of the microcontroller. The EN pin of an LCD is connected to the P2.2 pin of the microcontroller. The data pin of the LCD is connected to P3.0 – P3.7 of the microcontroller. Code. #include #define lcd P3 sbit PIR=P1^0; sbit rs=P2^0; //register select sbit rw=P2^1; //RW sbit en=P2^2 ... WebSep 13, 2016 · The sbit type defines a bit within a special function register (SFR). It is used in one of the following ways: sbit name = sfr-name ^ bit-position; sbit name = sfr-address ^ bit-position; sbit name = sbit-address; Where name is the name of the SFR bit. sfr-name is the name of a previously-defined SFR.
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Webmcu keil 485. Contribute to ktboy0502/mcu485 development by creating an account on GitHub. WebAug 12, 2024 · sbit LS138A = P2^2; //定义138译码器的输入A脚由P2.2控制 sbit LS138B = P2^3; //定义138译码器的输入脚B由P2.3控制 sbit LS138C = P2^4; //定义138译码器的输入 … cabinet hanging ribbon christmas wreaths
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WebMar 13, 2024 · 52单片机代码设计一个0.01秒精度的秒表,从00.00秒~19.99秒循环正计时并显示在数码管上; 设置一个报警门限值,范围08~12,初始门限值为10,选取两个按键可以对其进行加、减操作,并显示在数码管上; 当秒表数值大于该门限值,则发出声光报警,即用一个发光二极管指示灯闪烁,点亮0.1s,熄灭0.3s ... WebJan 5, 2024 · sbit LS138A = P2^2; //定义138译码器的输入A脚由P2.2控制 sbit LS138B = P2^3; //定义138译码器的输入脚B由P2.3控制 sbit LS138C = P2^4; //定义138译码器的输入脚C由P2.4控制 unsigned char ch; bit read_flag= 0 ; //此表为 LED 的字模, 共阴数码管 0-9 - unsigned char code Disp_Tab [] = … WebMar 13, 2024 · 52单片机代码实现设计一个0.01秒精度的秒表,从00.00秒~19.99秒循环正计时并显示在数码管上; 设置一个报警门限值,范围08~12,初始门限值为10,选取两个按键可以对其进行加、减操作,并显示在数码管上; 当秒表数值大于该门限值,则发出声光报警,即用一个发光二极管指示灯闪烁,点亮0.1s,熄灭 ... cabinet hardware 05401