ht1621驱动断码屏。全显时，com4上的段不显示

ID:289495 · 发表于 2018-11-8 09:42

测试发现，点亮的断码越多，com4上的段显示越暗，全部显示后，com4上的段就没显示了
怎么回事啊？

ID:289495 · 发表于 2018-11-16 08:42

已解决，硬件问题

ID:289495 · 发表于 2018-11-15 11:20

本帖最后由 fsdSADASDSA 于 2018-11-15 11:15 编辑

这是程序

#include "lcd.h"
#include "sys.h"

unsigned char tab9[]={
0x0F,0x0F,0x0F,0x0F,0x0F,0x0F,0x0F,0x0F,0x0F,0x0F,0x0F,0x0F,0x0F,0x0F,0x0F,0x0F,
0x0F,0x0F,0x0F,0x0F,0x0F,0x0F,0x0F,0x0F,0x0F,0x0F,0x0F,0x0F,0x0F,0x0F,0x0F,0x0F,
0x0F,0x0F,0x0F,0x0F,0x0F,0x0F,0x0F,0x0F,0x0F,0x0F,0x0F,0x0F,0x0F,0x0F,0x0F,0x0F
};
unsigned char tab0[]={
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00
};

void Delayns(void)
{
      __asm("nop");__asm("nop");__asm("nop");__asm("nop");__asm("nop");__asm("nop");
      __asm("nop");__asm("nop");__asm("nop");__asm("nop");__asm("nop");__asm("nop");
}

void Delay_t(uint t)
{
      uint i,j;
      for(i=0;i<t;i++)
      for(j=0;j<80;j++);
}

//PB3--CS
//PB4--背光
//PB5--WR
//PB6--DATA

void Initial_LCD()
{
      GPIO_InitTypeDef  GPIO_InitStructure;

      RCC_AHBPeriphClockCmd( RCC_AHBPeriph_GPIOB, ENABLE);

GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3|GPIO_Pin_4 |GPIO_Pin_5|GPIO_Pin_6;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
      GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
      GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
      GPIO_InitStructure.GPIO_Speed = GPIO_Speed_10MHz;
      GPIO_Init(GPIOB, &GPIO_InitStructure);

      LCD_CS_H();
      LCD_WR_H();
      LCD_DATA_H();

      LCD_RD_L();
      delay_ms(10);
      LCD_RD_H();
      delay_ms(100);

      Write_command(0x30);//select 1/4 dut & 1/3 bias
      Write_command(0x02);//RC 256K
      Write_command(0x52);//system enable
      Write_command(0x06);//LCD ON
}
//////////////////////////////////////
void Write_ID(unsigned char ID,unsigned char cnt)
{
unsigned char i;

for(i=0;i<cnt;i++)
{
         LCD_WR_L();
         delay_us(5);
         if(ID&0x80)
               LCD_DATA_H();
         else
            LCD_DATA_L();

         LCD_WR_H();
         delay_us(5);

         ID<<=1;
}
}

void Write_data_bit(unsigned char dat,unsigned char cnt)
{
      unsigned char i;
      for(i=0;i<cnt;i++)
      {
            LCD_WR_L();
            delay_us(5);

            if(dat&0x01)
                     LCD_DATA_H();
            else
                     LCD_DATA_L();

            //delay_us(5);
            LCD_WR_H();
            delay_us(5);
            dat>>=1;
      }
}
//写命令函数
void Write_command(unsigned char Command_byte)
{
      LCD_CS_L();
      delay_us(5);

      Write_ID(0x80,4);
      Write_ID(Command_byte,8);
      LCD_CS_H();
}

//写一个数据
void Singal_data_write(unsigned char address,unsigned char dat)
{
      LCD_CS_L();
      delay_us(5);

      Write_ID(0xa0,3);//write 101
      Write_ID(address,6);//address from 0x00
      Write_data_bit(dat,4);

      LCD_CS_H();delay_us(5);
}

//写所有数据
void Writeall_data_1621(unsigned char *p)
{
      unsigned char i;
      unsigned char temp_data;
      LCD_CS_L();
      delay_us(5);

      Write_ID(0xa0,3);//write 101
      Write_ID(0x00,6);//address from 0x00

      for(i=0;i<48;i++)
      {
            temp_data =p;
            Write_data_bit(temp_data,4);
      }

      LCD_CS_H();
}

#include "sys.h"
#include "lcd.h"

extern unsigned char tab8[];
extern unsigned char tab2[];
extern unsigned char tab9[];
extern unsigned char tab5[];
extern unsigned char tab0[];
extern unsigned char tab4[];

int main(void)
{
      delay_init(48);

   Initial_LCD();

      delay_ms(1000);
      delay_ms(1000);
      Writeall_data_1621(tab0); //清屏
      delay_ms(100);

      while(1)
      {
            Writeall_data_1621(tab9);                      Delay_t(3000);//全部显示
      }
}

ID:337808 · 发表于 2018-12-13 22:08

//写所有数据
void Write_All_data_1621(unsigned char *p)
{
      unsigned char i;
      unsigned char temp_data;
      LCD_CS_L();
      delay_us(5);

      Write_ID(0xA0,3);//write 101
      Write_ID(0x00,6);//address from 0x00

      for(i=0;i<48;i++)
      {
            temp_data = p++; //原文为temp_data=p; 请楼主赐教？？？？
            Write_data_bit(temp_data,4);
      }

      LCD_CS_H();
}

帐号		自动登录	找回密码
密码			立即注册