Pattern water flow lamp 1: check the table and display the LED lamp

To study the LED After the lamp moves left and right , The following implements a variety of patterns of running water lamps .

Hardware circuit design

combination 51 Knowledge of the smallest system of single chip microcomputer , utilize AD19 Draw the minimum system circuit （ Power supply part is not included ）.

This design needs to realize 8 individual LED Light on and off .LED（ Light-emitting diode ） Positive connection +5V Power Supply , The negative pole is connected to the single chip microcomputer P1 mouth , In this way, as long as the SCM P1 The diode can be turned on when the output level of the port is high or low , Realization LED Light on and off .

Simulation circuit design

Simulation circuit diagram and AD The schematic drawing method is consistent , However, it should be noted that the capacitance value in the simulated minimum system reset circuit is 0.1uf, Resistance value 100Ω, And AD There are differences in the schematic diagram .

Programming

The program uses Keil5 Design ,8 position LED Realize the program of pattern flow lamp ：

/*-----------------------------------------------
   name ：IO Port high and low level control 
   Content ： By looking up the table 1 A value of bytes is then assigned to P1 port 
------------------------------------------------*/
#include<reg52.h> // Include header file , In general, there is no need to change , The header file contains the definition of special function registers 

/*------------------------------------------------
                    Look up table 
------------------------------------------------*/
unsigned char code table[]=
{
  0x7f,0xbf,0xdf,0xef,
  0xf7,0xfb,0xfd,0xfe,
  0xff,0xff,0x00,0x00, 
  0x55,0x55,0xaa,0xaa
};
/*------------------------------------------------
                   Function declaration 
------------------------------------------------*/
void Delay(unsigned int t); // Function declaration 
/*------------------------------------------------
                     The main function 
------------------------------------------------*/
void main (void)
{                 
  unsigned char i;  // Define an unsigned character local variable  i  Value range  0~255
  while (1)         // Main circulation 
  {
 for(i=0;i<16;i++)   // Join in  for loop , indicate for Loop program loop in braces 
                     // perform 16 Time , Indicates that there are 16 Elements 
    {
       P1=table[i];
       Delay(30000);
    }
                     // Add other programs that need to work all the time in the main loop 
  }
}
/*------------------------------------------------
  The time delay function , Contains input parameters  unsigned int t, No return value 
 unsigned int  Is to define unsigned integer variables , The range of values is 
 0~65535
------------------------------------------------*/
void Delay(unsigned int t)
{
   while(--t);
}

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Simulation Implementation

In order to intuitively feel the effect of this design , Here use protues8.7 The simulation realizes the pattern water lamp , See the video for details .

http://mpvideo.qpic.cn/0bf2ean7kaa3jeagkaceyzpuwigd6uqbx5ia.f10002.mp4?