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C51 COMPILER V9.56.0.0 LCD 04/08/2022 02:58:55 PAGE 1 |
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C51 COMPILER V9.56.0.0, COMPILATION OF MODULE LCD |
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OBJECT MODULE PLACED IN lcd.OBJ |
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COMPILER INVOKED BY: D:\Keil_v5\C51\BIN\C51.EXE lcd.c OPTIMIZE(8,SPEED) BROWSE DEBUG OBJECTEXTEND TABS(2) |
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line level source |
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1 #include "lcd.h" |
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2 |
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3 |
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4 void Read_Busy() //忙检测函数，判断bit7是0，允许执行；1禁止 |
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5 { |
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6 1 unsigned char sta; // |
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7 1 LCD1602_DB = 0xff; |
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8 1 LCD1602_RS = 0; |
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9 1 LCD1602_RW = 1; |
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10 1 do |
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11 1 { |
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12 2 LCD1602_EN = 1; |
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13 2 sta = LCD1602_DB; |
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14 2 LCD1602_EN = 0; //使能，用完就拉低，释放总线 |
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15 2 }while(sta & 0x80); |
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16 1 } |
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17 |
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18 void Lcd1602_Write_Cmd(unsigned char cmd) //写命令 |
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19 { |
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20 1 Read_Busy(); |
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21 1 LCD1602_RS = 0; |
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22 1 LCD1602_RW = 0; |
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23 1 LCD1602_DB = cmd; |
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24 1 LCD1602_EN = 1; |
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25 1 LCD1602_EN = 0; |
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26 1 } |
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27 |
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28 void Lcd1602_Write_Data(unsigned char dat) //写数据 |
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29 { |
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30 1 Read_Busy(); |
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31 1 LCD1602_RS = 1; |
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32 1 LCD1602_RW = 0; |
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33 1 LCD1602_DB = dat; |
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34 1 LCD1602_EN = 1; |
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35 1 LCD1602_EN = 0; |
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36 1 } |
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37 |
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38 void LcdSetCursor(unsigned char x,unsigned char y) //坐标显示 |
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39 { |
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40 1 unsigned char addr; |
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41 1 if(y == 0) |
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42 1 addr = 0x00 + x; |
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43 1 else |
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44 1 addr = 0x40 + x; |
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45 1 |
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46 1 Lcd1602_Write_Cmd(addr|0x80); |
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47 1 } |
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48 |
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49 //按指定位置显示一个字符 |
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50 void DisplayOneChar(unsigned char X, unsigned char Y, unsigned char DData) |
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51 { |
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52 1 Y &= 0x1; |
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53 1 X &= 0xF; //限制X不能大于15，Y不能大于1 |
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54 1 if (Y) X |= 0x40; //当要显示第二行时地址码+0x40; |
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55 1 X |= 0x80; //算出指令码 |
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C51 COMPILER V9.56.0.0 LCD 04/08/2022 02:58:55 PAGE 2 |
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56 1 Lcd1602_Write_Cmd(X); //发命令字 |
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57 1 Lcd1602_Write_Data(DData); //发数据 |
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58 1 } |
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59 |
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60 |
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61 void LcdShowStr(unsigned char x,unsigned char y,unsigned char *str) //显示字符串 |
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62 { |
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63 1 LcdSetCursor(x,y); //当前字符的坐标 |
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64 1 while(*str != '\0') |
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65 1 { |
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66 2 Lcd1602_Write_Data(*str++); |
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67 2 } |
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68 1 } |
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69 |
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70 void InitLcd1602() //1602初始化 |
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71 { |
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72 1 Lcd1602_Write_Cmd(0x38); //打开，5*8,8位数据 |
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73 1 Lcd1602_Write_Cmd(0x0c); |
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74 1 Lcd1602_Write_Cmd(0x06); |
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75 1 Lcd1602_Write_Cmd(0x01); //清屏 |
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76 1 } |
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MODULE INFORMATION: STATIC OVERLAYABLE |
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CODE SIZE = 157 ---- |
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CONSTANT SIZE = ---- ---- |
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XDATA SIZE = ---- ---- |
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PDATA SIZE = ---- ---- |
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DATA SIZE = ---- 3 |
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IDATA SIZE = ---- ---- |
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BIT SIZE = ---- ---- |
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END OF MODULE INFORMATION. |
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C51 COMPILATION COMPLETE. 0 WARNING(S), 0 ERROR(S)
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