今天小编要和大家分享的是控制,MCU相关信息,接下来我将从51单片机对LCD1602液晶显示的驱动控制设计,hych228e液晶显示器这几个方面来介绍。
控制,MCU相关技术文章51单片机对LCD1602液晶显示的驱动控制设计
利用串行A/D转换器TLC549对输入信号电压源进行采集转换成数字信号给51单片机,经单片机进行数据处理后给1602液晶显示。
误差小于1%.
#include
#include
#define uint unsigned int
#define uchar unsigned char
uchar LCD[6]; //电压数据转换成LCD1602液晶字符显示
uint Volt;
sbit DO= P1^0; //时钟
sbit CS= P1^1; //片选
sbit CLK = P1^2; //数据输出
sbit RS = P2^0; //1602液晶数据/命令选择端
sbit RW = P2^1; //1602液晶读写端
sbit E= P2^2; //1602液晶使能端
// Function Prototypes
void check_busy(void);
void write_command(uchar com);
void write_date(uchar date);
void LCD_init(void);
void string(uchar ad ,uchar *s);
//void lcd_test(void);
void delay(uint);
void Volt_To_LCD1602(void);
void delay_ms(uint xms);
void Data_Conversion(void);
uchar TLC549_ADC(void);
/*******************************************
LCD1602 Driver mapped as IO peripheral
*******************************************/
// Delay
// Delay
void delay(uint j)
{
uchar i = 60;
for(; j》0; j--)
{
while(--i);
i = 59;
while(--i);
i = 60;
}
}
// Test the Busy bit
void check_busy(void)
{
do
{
P0 = 0xff;
E = 0;
RS = 0;
RW = 1;
E = 1;
_nop_();
} while(P0 & 0x80);
E = 0;
}
// Write a command
void write_command(uchar com)
{
check_busy();
E = 0;
RS = 0;
RW = 0;
P0 = com;
E = 1;
_nop_();
E = 0;
delay(1);
}
// Write Data
void write_date(uchar date)
{
check_busy();
E = 0;
RS = 1;
RW = 0;
P0 = date;
E = 1;
_nop_();
E = 0;
delay(1);
}
// Initialize LCD controller
void LCD_init(void)
{
write_command(0x38); // 8-bits, 2 lines, 7x5 dots
write_command(0x0C); // no cursor, no blink, enable display
write_command(0x06); // auto-increment on
write_command(0x01); // clear screen
delay(1);
}
// Display a string
void string(uchar ad, uchar *s)