ht1621怎么弄也不亮
不知道哪出了问题,总之就是一直不亮;希望老沙给看看啊mcu用的是stm32,,液晶找厂家定制的;
wr\rd\data\cs全部接上拉电阻:10K
vlcd的偏压电阻是:20k
程序写在下面 编译环境:IAR for arm 5.2
程序如下:
#define SYSDIS 0x00
#define SYSEN 0x02
#define LCDOFF 0x04
#define LCDON 0x06
#define RC256K 0x30
#define BIAS3 0x52
#define CMD_ID 0x04
#define DATA_ID0x05
#define LCDCLR 0x00
/********定义管脚为高电平或低电平,reset=0,set=1*/
#define CS_LOW {GPIO_ResetBits(GPIOA, GPIO_Pin_4);} /*清除指定的端口位0*/
#define CS_HIGH {GPIO_SetBits(GPIOA, GPIO_Pin_4);}/*设置数据端口位1*/
#define RD_LOW {GPIO_ResetBits(GPIOA, GPIO_Pin_6);}
#define RD_HIGH {GPIO_SetBits(GPIOA, GPIO_Pin_6);}
#define WR_LOW {GPIO_ResetBits(GPIOA, GPIO_Pin_5);}
#define WR_HIGH {GPIO_SetBits(GPIOA, GPIO_Pin_5);}
#define DATA_LOW{GPIO_ResetBits(GPIOA, GPIO_Pin_7);}
#define DATA_HIGH {GPIO_SetBits(GPIOA, GPIO_Pin_7);}
const u8 HT1621_Data={0x7D,0x05,0x3E,0x7B,0x63,0x5C,0x5F,0x70,
0x7F,0x7C,0x4E,0x4B,0x0E,0x17,0x1F};
const u8 HT1621_Addr={0x14,0x15,0x16,0x17,0x18,0x19,0x1A,0x1B,
0x1C,0x1D,0x1E,0x1F};
/*若显示小数点,则需要
/********定义符号显示地址、数字******************/
#defineLCD_COM0 0x08
#defineLCD_COM1 0x04
#defineLCD_COM2 0x02
#defineLCD_COM3 0x00
/**********************************
写id 命令(100、101)
**********************************/
void HT1621_WriteId (u8 id)
{
u8 c; /*循环计数 */
u8 shield=0x04; /*0000 0100,数据屏蔽shield*/
CS_LOW /*cs=0*/
for(c=0;c<3;c++)
{
if((shield & id)==0)
DATA_LOW
else
DATA_HIGH
shield = shield>>1;
WR_LOW
LCD128_Delay();
WR_HIGH
LCD128_Delay();
}
CS_HIGH
}
/************************************************
写八位命令包括LCDon\off,SYSon\off、偏压等等8位CMD
*************************************************/
void HT1621_WriteCmd(u8 cmd)
{
u8 c; /*循环计数*/
u8 shield=0x80; /*1000 0000,数据屏蔽shield */
CS_LOW
for(c=0;c<8;c++)
{
if((shield & cmd)==0)
DATA_LOW
else
DATA_HIGH
shield = shield>>1;
WR_LOW
LCD128_Delay();
WR_HIGH
LCD128_Delay();
}
CS_HIGH
}
/*********************************************
写6位地址A5-A0,低六位有效,seg口
*********************************************/
void HT1621_WriteAddr(u8 addr)
{
u8 c; /*循环计数 */
u8 shield=0x20; /*0010 0000,从第三位开始读*/
CS_LOW;
for(c=0;c<6;c++)
{
if((shield & addr)==0)
DATA_LOW
else
DATA_HIGH
shield = shield>>1; /*从高位A5开始依次向下写到A0*/
WR_LOW
LCD128_Delay();
WR_HIGH
LCD128_Delay();
}
CS_HIGH
}
/***************************************************
写4位数据,直接写进ram需要D0-D3,低4位有效
***************************************************/
void HT1621_WriteData(u8 data)
{
u8 c; /*循环计数 */
u8 shield=0x08; /*0000 1000,数据屏蔽shield*/
CS_LOW
for(c=0;c<4;c++)
{
if((shield & data)==0)
DATA_LOW
else
DATA_HIGH
shield >>= 1;
WR_LOW
LCD128_Delay();
WR_HIGH
LCD128_Delay();
}
CS_HIGH
}
/*******************************************
初始化LCD
*******************************************/
void HT1621_Init(void)
{
//GPIO_InitTypeDef GPIO_InitStructure;
//GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5 | GPIO_Pin_6 | GPIO_Pin_7 | GPIO_Pin_4;
//GPIO_InitStructure.GPIO_Speed = GPIO_Speed_10MHz;
//GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; /*推免模式*/
//GPIO_Init(GPIOA, &GPIO_InitStructure);
CS_LOW
HT1621_WriteId (CMD_ID);
HT1621_WriteCmd(BIAS3); /*1/3bias,4comm */
HT1621_WriteCmd(SYSEN); /*SysOn*/
HT1621_WriteCmd(LCDON); /*LcdOn*/
HT1621_WriteCmd(RC256K); /*Rc256*/
CS_HIGH
}
/*************************************************
显示一位数字
*************************************************/
void HT1621_WriteNum(u8 addr,u8 data)
{
u8 data_h;
u8 data_l;
//addr=HT1621_Addr;
//if(addr!=3)
//data=HT1621_Data;
//else
//data=HT1621_Data|0x80;
data_h=data>>4;
data_l=data&0x0F;
HT1621_WriteId(DATA_ID); /*送101数据命令*/
HT1621_WriteAddr(addr); /*写地址*/
HT1621_WriteData(data_h); /*写数据*/
HT1621_WriteId(DATA_ID);
HT1621_WriteAddr(addr-1); /*地址减1,旁边的seg口*/
HT1621_WriteData(data_l);
} 希望大家给看看啊,我这天天弄,弄不出来啊 lz共同研究,坛子里有人搞出来了! 感觉你第一段代码好象有问题,你再仔细看看! 给你一段MSP430的驱动作为参考一下,希望能有帮助
cs-----p6.6
wr-----p6.4
dat----p6.3
mcu----msp430f149
/***********写字节****************************/
void write_byte(uchar k,uchar n)
{
uchar i,j;
for(i=0;i<n;i++)
{
if(k&0x80)
P6OUT|=0x08;//p6.3=1
else
P6OUT&=0xf7;//p6.3=0
dely(1);
P6OUT|=0x10; //wr=1
j=0;
k=k<<1;
j=0;
P6OUT&=0xef; //wr=0
}
}
void write_byte1(uchar k,uchar n)
{
uchar i;
for(i=0;i<n;i++)
{
if(k&0x01)
P6OUT|=0x08; //6.3=1
else
P6OUT&=0xf7; //6.3=0
dely(1);
P6OUT|=0x10; //wr=1
dely(1);
k=k>>1;
dely(1);
P6OUT&=0xef; //wr=0
}
}
/********写命令**********************************/
void write_com(uchar com)
{
P6OUT&=0xbf; //cs=0
dely(1);
write_byte(0x80,3); //写100
write_byte(com,8);
P6OUT|=0x10; //wr=1
dely(1);
P6OUT&=0xef; //wr=0
dely(1);
P6OUT|=0x40; //cs=1
}
/********写数据*********************************/
void write_dat(uchar add,uchar mdata)
{
P6OUT&=0xbf; //cs=0
dely(1);
add=add<<2;
write_byte(0xa0,3); //写101
write_byte(add,6);
write_byte1(mdata,4);
dely(1);
P6OUT|=0x40; //cs=1
}
/*******清屏************************************/
void display_clr(viod)
{
uchar i;
for(i=0;i<32;i++)
{
write_dat(i,0);
}
}
/******初始化液晶*******************************/
void int1621(void)
{
P6OUT|=0x40; //cs=1
dely(1);
P6OUT&=0xef; //wr=0
dely(1);
P6OUT|=0x08; //dat=1
dely(1);
write_com(0x29);
write_com(0x18);
write_com(0x06);
write_com(0x04);
write_com(0x01);
write_com(0x03);
display_clr();
}
/*******显示************************************/
void display(uchar add,uint dat)
{
add=add*4+1; //显示地址
intxin.x=dat;
write_dat(add,intxin.c>>4);
write_dat(add+1,intxin.c);
write_dat(add+2,intxin.c>>4);
write_dat(add+3,intxin.c);
}
display(1,display_buffer1); //显示位置,显示段码
display(2,display_buffer1);
display(3,display_buffer1);
display(4,display_buffer1); 不好意思,我错了。你我代码差不多!也是不点屏!请版主提醒下啊! for(c=0;c<3;c++)
把3改为4试试 Ht有51的标准代码发布 初始化和时序出错就没戏 我这里有个AVR汇编的头文件,贴出来看看能不能帮帮你.
.EQU BIAS =$52 ;1/3 偏压4 背极
.EQU RC256 =$30 ;系统时钟选用片内RC 振荡器
.EQU SYSEN =$02 ;打开系统时钟
.EQU LCDON =$06 ;打开偏压发生器
.EQU SYSDIS =$00 ;关闭系统时钟和偏压发生器
.EQU X32K =$28 ;系统时钟选择为片外晶振
.EQU ToneOn =$12 ;打开音频输出
.EQU ToneOff =$10 ;关闭音频输出
.EQU Tone4k =$80 ;音频输出频率为4K
.EQU Tone2k =$C0 ;音频输出频率为2K
.EQU TIMEREN =$0C ;时基输出使能
.EQU TIMERDIS =$08 ;时基输出禁能
.EQU CLRtime =$18 ;清零进基发生器
.EQU WDTEN =$0E ;使能WDT 溢出标志输出
.EQU WDTDIS =$0A ;禁止WDT 溢出标志输出
.EQU CLRWDT =$1C ;清零WDT
.EQU IRQEN =$10 ;使能IRQ 输出
.EQU IRQDIS =$00 ;禁止IRQ 输出
.EQU FR1 =$40 ;设置时基输出1HZ WDT 溢出时间4s
.equ lcdport =portb
.equ lcdsda =0
.equ lcdsck =1
.equ lcdcs =2
.dseg
l1disbuf: .byte 16 ;第一行显存
l2disbuf: .byte 16 ;第二行显存
l3disbuf: .byte 16 ;第三行显存
l4disbuf: .byte 16 ;第四行显存
l5disbuf: .byte 16 ;第五行显存
.cseg
ht1621init: ;HT1621初始化
ldi r16, lcdon
rcall ht1621wrcom
ldi r16, sysen
rcall ht1621wrcom
ldi r16, bias
rcall ht1621wrcom
ret
lcdwr1000: ;写命令数据头为101
sbi lcdport, lcdsda
cbi lcdport, lcdsck
sbi lcdport, lcdsck
cbi lcdport, lcdsda
cbi lcdport, lcdsck
sbi lcdport, lcdsck
cbi lcdport, lcdsck
sbi lcdport, lcdsck
cbi lcdport, lcdsck
sbi lcdport, lcdsck
ret
lcdwr101: ;写数据数据头为101
sbi lcdport, lcdsda
cbi lcdport, lcdsck
sbi lcdport, lcdsck
cbi lcdport, lcdsda
cbi lcdport, lcdsck
sbi lcdport, lcdsck
sbi lcdport, lcdsda
cbi lcdport, lcdsck
sbi lcdport, lcdsck
ret
lcdwr000000: ;向HT1621写入RAM地址为6位数,从0开始
cbi lcdport, lcdsda
push r17
ldi r17, 6
lcdwr60:
cbi lcdport, lcdsck
sbi lcdport, lcdsck
dec r17
brne lcdwr60
pop r17
ret
ht1621wrcom: ;向HT1621写入一个命令字节
cbi lcdport, lcdcs
rcall lcdwr1000
rcall ht1621wrbyte
sbi lcdport, lcdcs
sbi lcdport, lcdsda
ret
ht1621dis: ;向HT1621写入16个字节,即显示16个数字
cbi lcdport, lcdcs
rcall lcdwr101
rcall lcdwr000000
push r18
ldi r18, 15
ldi xh, high(l1disbuf)
ldi xl, low(l1disbuf)
ht1621wrda010:
ldi zh, high(numtab*2)
ldi zl, low(numtab*2)
ld r16, x+
clr r17
add zl, r16
adc zh, r17
lpm r16, z
rcall ht1621wrbyte
dec r18
brne ht1621wrda010
sbi lcdport, lcdcs
pop r18
ret
disbufinit: ;显示缓存初始化
ldi xh, high(l1disbuf)
ldi xl, low(l1disbuf)
push r17
ldi r17, 16
ldi r16, $00
disbufinit010:
st x+, r16
inc r16
dec r17
brne disbufinit010
pop r17
ret
disbufclr: ;清零显示缓存
ldi xh, high(l1disbuf)
ldi xl, low(l1disbuf)
push r17
ldi r17, 4
ldi r16, 16 ;16=空格即不显示
disbufclr010:
st x+, r16
st x+, r16
st x+, r16
st x+, r16
dec r17
brne disbufclr010
pop r17
ret
ht1621wrbyte: ;向HT1621写入一个字节
push r17
ldi r17, 8
ht1621wrbyte000:
rol r16
brcc ht1621wrbyte010
sbi lcdport, lcdsda
rjmp ht1621wrbyte020
ht1621wrbyte010:
cbi lcdport, lcdsda
ht1621wrbyte020:
cbi lcdport, lcdsck
sbi lcdport, lcdsck
dec r17
brne ht1621wrbyte000
pop r17
ret
/*
$01对应卡尔,年,月,日,2个冒号,星期
$02对应NUM1-15的C显示
$04对应NUM1-15的G显示
$08对应NUM1-15的B显示
$10对应NUM1-15的D显示
$20对应NUM1-15的E显示
$40对应NUM1-15的F显示
$80对应NUM1-15的A显示
第一行NUM1-15与第2-5行NUM1-8的显示码表格
第2-5行NUM9-15显示码要高低半字节交换*/
numtab:
.db $fb,$0b,$bd,$9f,$4f,$d7,$f7,$8b,$ff,$df,$ef,$77,$35,$3f,$f5,$e5,$00 延时时间足够了没? 给个 KeilC51 使用过的
用过的例子ourdev_679896O39W14.rar(文件大小:5K) (原文件名:Ht1620驱动of KeilC51.rar) 顶................
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