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MSP432P401R外接MAX7219点阵屏模块点阵屏数据异常，希望可以找一下哪里可能存在问题，是配置存在问题还是硬件电路设计有问题，数字无法正确显示。
谢谢！点阵屏.zip
楼主你好，你的点阵屏是共阳极还是共阴极？
做电子设计，需要电路和程序匹配才可以正常驱动的
#include <reg52.h> #include <intrins.h> #define uchar unsigned char #define uint unsigned int //����Max7219�˿� sbit Max7219_pinCLK = P2^2; sbit Max7219_pinCS = P2^1; sbit Max7219_pinDIN = P2^0; uchar code disp1[38][8]={ {0x3C,0x42,0x42,0x42,0x42,0x42,0x42,0x3C},//0 {0x10,0x18,0x14,0x10,0x10,0x10,0x10,0x10},//1 {0x7E,0x2,0x2,0x7E,0x40,0x40,0x40,0x7E},//2 {0x3E,0x2,0x2,0x3E,0x2,0x2,0x3E,0x0},//3 {0x8,0x18,0x28,0x48,0xFE,0x8,0x8,0x8},//4 {0x3C,0x20,0x20,0x3C,0x4,0x4,0x3C,0x0},//5 {0x3C,0x20,0x20,0x3C,0x24,0x24,0x3C,0x0},//6 {0x3E,0x22,0x4,0x8,0x8,0x8,0x8,0x8},//7 {0x0,0x3E,0x22,0x22,0x3E,0x22,0x22,0x3E},//8 {0x3E,0x22,0x22,0x3E,0x2,0x2,0x2,0x3E},//9 {0x8,0x14,0x22,0x3E,0x22,0x22,0x22,0x22},//A {0x3C,0x22,0x22,0x3E,0x22,0x22,0x3C,0x0},//B {0x3C,0x40,0x40,0x40,0x40,0x40,0x3C,0x0},//C {0x7C,0x42,0x42,0x42,0x42,0x42,0x7C,0x0},//D {0x7C,0x40,0x40,0x7C,0x40,0x40,0x40,0x7C},//E {0x7C,0x40,0x40,0x7C,0x40,0x40,0x40,0x40},//F {0x3C,0x40,0x40,0x40,0x40,0x44,0x44,0x3C},//G {0x44,0x44,0x44,0x7C,0x44,0x44,0x44,0x44},//H {0x7C,0x10,0x10,0x10,0x10,0x10,0x10,0x7C},//I {0x3C,0x8,0x8,0x8,0x8,0x8,0x48,0x30},//J {0x0,0x24,0x28,0x30,0x20,0x30,0x28,0x24},//K {0x40,0x40,0x40,0x40,0x40,0x40,0x40,0x7C},//L {0x81,0xC3,0xA5,0x99,0x81,0x81,0x81,0x81},//M {0x0,0x42,0x62,0x52,0x4A,0x46,0x42,0x0},//N {0x3C,0x42,0x42,0x42,0x42,0x42,0x42,0x3C},//O {0x3C,0x22,0x22,0x22,0x3C,0x20,0x20,0x20},//P {0x1C,0x22,0x22,0x22,0x22,0x26,0x22,0x1D},//Q {0x3C,0x22,0x22,0x22,0x3C,0x24,0x22,0x21},//R {0x0,0x1E,0x20,0x20,0x3E,0x2,0x2,0x3C},//S {0x0,0x3E,0x8,0x8,0x8,0x8,0x8,0x8},//T {0x42,0x42,0x42,0x42,0x42,0x42,0x22,0x1C},//U {0x42,0x42,0x42,0x42,0x42,0x42,0x24,0x18},//V {0x0,0x49,0x49,0x49,0x49,0x2A,0x1C,0x0},//W {0x0,0x41,0x22,0x14,0x8,0x14,0x22,0x41},//X {0x41,0x22,0x14,0x8,0x8,0x8,0x8,0x8},//Y {0x0,0x7F,0x2,0x4,0x8,0x10,0x20,0x7F},//Z {0x8,0x7F,0x49,0x49,0x7F,0x8,0x8,0x8},//�� {0xFE,0xBA,0x92,0xBA,0x92,0x9A,0xBA,0xFE},//�� }; void Delay_xms(uint x) { uint i,j; for(i=0;i<x;i++) for(j=0;j<112;j++); } //-------------------------------------------- //���ܣ���MAX7219(U3)д���ֽ� //��ڲ�����DATA //���ڲ������� //˵���� void Write_Max7219_byte(uchar DATA) { uchar i; Max7219_pinCS=0; for(i=8;i>=1;i--) { Max7219_pinCLK=0; Max7219_pinDIN=DATA&0x80; DATA=DATA<<1; Max7219_pinCLK=1; } } //------------------------------------------- //���ܣ���MAX7219д������ //��ڲ�����address��dat //���ڲ������� //˵���� void Write_Max7219(uchar address,uchar dat) { Max7219_pinCS=0; Write_Max7219_byte(address); //д���ַ��������ܱ�� Write_Max7219_byte(dat); //д�����ݣ����������ʾ���� Max7219_pinCS=1; } void Init_MAX7219(void) { Write_Max7219(0x09, 0x00); //���뷽ʽ��BCD�� Write_Max7219(0x0a, 0x03); //���� Write_Max7219(0x0b, 0x07); //ɨ����ޣ�8���������ʾ Write_Max7219(0x0c, 0x01); //���ģʽ��0����ͨģʽ��1 Write_Max7219(0x0f, 0x00); //��ʾ���ԣ�1�����Խ�����������ʾ��0 } void main(void) { uchar i,j; Delay_xms(50); Init_MAX7219(); while(1) { for(j=0;j<38;j++) { for(i=1;i<9;i++) Write_Max7219(i,disp1[j][i-1]); Delay_xms(1000); } } }
