用keil写一个MAX7219程序,数字1-9流动显示
时间: 2023-05-16 18:05:25 浏览: 104
非常感谢您的提问。以下是一个基于Keil的MAX7219程序,可以实现数字1-9的流动显示:
```
#include <reg51.h>
#define MAX7219_DIN P1_0
#define MAX7219_CS P1_1
#define MAX7219_CLK P1_2
void delay(unsigned int t) {
unsigned int i, j;
for (i = 0; i < t; i++) {
for (j = 0; j < 125; j++);
}
}
void send_byte(unsigned char data) {
unsigned char i;
for (i = 8; i > 0; i--) {
MAX7219_CLK = 0;
MAX7219_DIN = data & 0x80;
data <<= 1;
MAX7219_CLK = 1;
}
}
void send_cmd(unsigned char cmd, unsigned char data) {
MAX7219_CS = 0;
send_byte(cmd);
send_byte(data);
MAX7219_CS = 1;
}
void init_max7219() {
send_cmd(0x09, 0x00);
send_cmd(0x0a, 0x03);
send_cmd(0x0b, 0x07);
send_cmd(0x0c, 0x01);
send_cmd(0x0f, 0x00);
}
void display_number(unsigned char num) {
send_cmd(0x01, num);
}
void main() {
unsigned char i;
init_max7219();
while (1) {
for (i = 1; i <= 9; i++) {
display_number(i);
delay(1000);
}
}
}
```
希望这个程序能够帮助您实现数字1-9的流动显示。如果您有任何问题,请随时联系我。