51 microcontroller learning: LED dot matrix experiment (display image)

Experiment name: LED dot matrix experiment (display image)
Wiring instructions:
Experimental phenomenon: After downloading the program, the 8*8 LED dot matrix displays a heart shape.
Note: The J24 yellow jumper cap next to the LED dot matrix is ​​shorted to the GND end
*** *************************************************** **********************************/
#include "reg51.h"

typedef unsigned int u16; //Redefine the system default data type
typedef unsigned char u8;

//Define 74HC595 control pin
sbit SRCLK=P3^6; //Shift register clock input
sbit RCLK=P3^5; //Storage register clock input
sbit SER=P3^4; //Serial data input

#define LEDDZ_COL_PORT P0 //Point array control port

u8 gled_row[8]={0x38,0x7C,0x7E,0x3F,0x3F,0x7E,0x7C,0x38};//LED dot matrix display image row data
u8 gled_col[8]={0x7f,0xbf,0xdf,0xef,0xf7 ,0xfb,0xfd,0xfe};//Column data of LED dot matrix display image

/****************************************************** ****************************
* Function name: delay_10us
* Function function: Delay function, when ten_us=1, the delay is approximately 10us
* Input: ten_us
* Output: None
**************************************** ***************************************/
void delay_10us(u16 ten_us)
{
while(ten_us --);
}

/****************************************************** ******************************
* Function name: hc595_write_data(u8 dat)
* Function function: Write one byte to 74HC595 data
* input: dat:data
* output: none
****************************************** *****************************************/
void hc595_write_data(u8 dat)
{
u8 i=0;

for(i=0;i<8;i++)//Loop 8 times to write a byte into the register
{ SER=dat>>7;//Transmit the high-order dat
of a byte first
<<=1;//Move the low bit to the high bit
SRCLK=0;
delay_10us(1);
SRCLK=1;
delay_10us(1);//The rising edge of the shift register clock sends the port data into the register
}
RCLK=0;
delay_10us(1);
RCLK=1;//The rising edge of the storage register clock will output the data previously written to the register
}

/****************************************************** ******************************
* Function name: main
* Function function: main function
* Input: None
* Output: None
* *************************************************** ****************************/
void main()
{
u8 i=0;

while(1)
{
for(i=0;i<8;i++)//Loop 8 times to scan 8 rows and columns
{
LEDDZ_COL_PORT=gled_col[i];//Transmit column selection data
hc595_write_data(gled_row[i]);/ /Transmit row selection data
delay_10us(100);//Delay for a period of time, waiting for the display to stabilize
hc595_write_data(0x00);//Eliminate shadow
}
}
}