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/************* 功能說明 **************
本例程基于STC8H8K64U為主控芯片的實(shí)驗(yàn)箱9.5進(jìn)行編寫測(cè)試，STC8H系列帶DMA模塊的芯片可通用參考.
9.5之前實(shí)驗(yàn)箱版本，12864模塊接口，P4.2與P4.4接口需要進(jìn)行調(diào)換才能使用硬件LCM接口通信.
LCM接口驅(qū)動(dòng)液晶屏程序
8bit M6800模式, P6口接D0~D7
sbit LCD_RS = P4^5; //數(shù)據(jù)/命令切換
sbit LCD_RW = P4^2; //讀寫控制
sbit LCD_E = P4^4; //使能
sbit LCD_RESET = P3^4; //復(fù)位
LCM指令通過中斷方式等待發(fā)送完成
DMA設(shè)置長(zhǎng)度16字節(jié)，通過中斷方式判斷傳輸完成
設(shè)置時(shí)鐘 1.2MHz (128*64屏, ST7920驅(qū)動(dòng), 速度太快顯示會(huì)不正常).
******************************************/
#include "..\..\comm\STC8H.h"
#include "stdio.h"
#include "intrins.h"
#include "LCD_IMG.h"
#define MAIN_Fosc 12000000L //定義計(jì)算時(shí)鐘參數(shù)
typedef unsigned char u8;
typedef unsigned int u16;
typedef unsigned long u32;
sbit LCD_RS = P4^5; //數(shù)據(jù)/命令切換
sbit LCD_RW = P4^2; //讀寫控制
sbit LCD_E = P4^4; //使能
//sbit LCD_PSB = P3^5; //PSB腳為12864的串、并通訊功能切換，我們使用8位并行接口，PSB=1
sbit LCD_RESET = P3^4; //復(fù)位
//IO連接
#define LCD_DataPort P6 //8位數(shù)據(jù)口
#define USR_LCM_IF 1 //1: use LCM Interface
u16 index;
bit DmaFlag=0;
bit LcmFlag=0;
u8 code uctech[] = {"11111111111 "};
u8 code net[] = {" 111111111111 "};
u8 code mcu[] = {"111111111111"};
u8 code qq[] = {" 111111111111 "};
void delay_ms(u16 ms);
void GPIO_Init(void);
void LCM_Config(void);
void DMA_Config(void);
void LCD_Init(void);
void DisplayImage (u8 *DData);
void DisplayListChar(u8 X, u8 Y, u8 code *DData);
void Write_Cmd(unsigned char WCLCD,unsigned char BuysC);
void Write_Data(unsigned char WDLCD);
void LCDClear(void);
void main(void)
{
P_SW2 |= 0x80; //擴(kuò)展寄存器(XFR)訪問使能
P0M1 = 0; P0M0 = 0; //設(shè)置為準(zhǔn)雙向口
P1M1 = 0; P1M0 = 0; //設(shè)置為準(zhǔn)雙向口
P2M1 = 0; P2M0 = 0; //設(shè)置為準(zhǔn)雙向口
P3M1 = 0; P3M0 = 0; //設(shè)置為準(zhǔn)雙向口
P4M1 = 0; P4M0 = 0; //設(shè)置為準(zhǔn)雙向口
P5M1 = 0; P5M0 = 0; //設(shè)置為準(zhǔn)雙向口
P6M1 = 0; P6M0 = 0; //設(shè)置為準(zhǔn)雙向口
P7M1 = 0; P7M0 = 0; //設(shè)置為準(zhǔn)雙向口
GPIO_Init();
#if USR_LCM_IF == 1
LCM_Config();
DMA_Config();
EA = 1;
#endif
// delay_ms(100); //啟動(dòng)等待，等LCD進(jìn)入工作狀態(tài)
LCD_Init(); //LCM初始化
while(1)
{
LCDClear();
DisplayImage(gImage_gxw);
delay_ms(200);
LCDClear();
DisplayListChar(0,1,uctech); //顯示字庫中的中文數(shù)字
DisplayListChar(0,2,net); //顯示字庫中的中文數(shù)字
DisplayListChar(0,3,mcu); //顯示字庫中的中文
DisplayListChar(0,4,qq); //顯示字庫中的中文數(shù)字
delay_ms(200);
}
}
//按指定位置顯示一串字符
void DisplayListChar(u8 X, u8 Y, u8 code *DData)
{
u8 ListLength,X2;
ListLength = 0;
X2 = X;
if(Y < 1) Y=1;
if(Y > 4) Y=4;
X &= 0x0F; //限制X不能大于16，Y在1-4之內(nèi)
switch(Y)
{
case 1: X2 |= 0X80; break; //根據(jù)行數(shù)來選擇相應(yīng)地址
case 2: X2 |= 0X90; break;
case 3: X2 |= 0X88; break;
case 4: X2 |= 0X98; break;
}
Write_Cmd(X2, 1); //發(fā)送地址碼
while (DData[ListLength] >= 0x20) //若到達(dá)字串尾則退出
{
if (X <= 0x0F) //X坐標(biāo)應(yīng)小于0xF
{
Write_Data(DData[ListLength]); //
ListLength++;
X++;
}
}
}
//圖形顯示122*32
void DisplayImage (u8 *DData)
{
#if USR_LCM_IF == 0
u8 y;
#endif
u8 x,i;
unsigned int tmp=0;
for(i=0;i<9;) //分兩屏，上半屏和下半屏，因?yàn)槠鹗嫉刂凡煌枰珠_
{
for(x=0;x<32;x++) //32行
{
Write_Cmd(0x34,1);
Write_Cmd((u8)(0x80+x),1); //列地址
Write_Cmd((u8)(0x80+i),1); //行地址，下半屏，即第三行地址0X88
Write_Cmd(0x30,1);
#if USR_LCM_IF == 1
DMA_LCM_TXAH = (u8)((u16)&DData[tmp] >> 8);
DMA_LCM_TXAL = (u8)((u16)&DData[tmp]);
while(DmaFlag);
DmaFlag = 1;
DMA_LCM_CR = 0xa0; //Write data
#else
for(y=0;y<16;y++)
Write_Data(DData[tmp+y]);//讀取數(shù)據(jù)寫入LCD
#endif
tmp+=16;
}
i+=8;
}
Write_Cmd(0x36,1); //擴(kuò)充功能設(shè)定
Write_Cmd(0x30,1);
}
//========================================================================
// 函數(shù): void delay_ms(u16 ms)
// 描述: 延時(shí)函數(shù)。
// 參數(shù): ms,要延時(shí)的ms數(shù), 自動(dòng)適應(yīng)主時(shí)鐘.
// 返回: none.
// 版本: VER1.0
// 日期: 2013-4-1
// 備注:
//========================================================================
void delay_ms(u16 ms)
{
u16 i;
do{
i = MAIN_Fosc / 10000;
while(--i);
}while(--ms);
}
void LCD_delay(void)
{
_nop_();
_nop_();
_nop_();
_nop_();
_nop_();
_nop_();
_nop_();
_nop_();
_nop_();
_nop_();
}
//讀狀態(tài)
void ReadStatusLCD(void)
{
//#if USR_LCM_IF == 1
//
// LcmFlag = 1;
// LCMIFCR = 0x86; //Enable interface, Read command
// while(LcmFlag);
//
//#else
LCD_DataPort = 0xFF;
//P6口設(shè)置成輸入口
P6M0=0x00;
P6M1=0xFF;
LCD_RS = 0;
LCD_RW = 1;
LCD_delay();
LCD_E = 1;
LCD_delay();
while (LCD_DataPort & 0x80); //檢測(cè)忙信號(hào)
LCD_E = 0;
//P6口設(shè)置成推挽輸出
P6M0=0xFF;
P6M1=0x00;
LCD_DataPort = 0xFF; //拉高P6
//#endif
}
void Write_Cmd(unsigned char WCLCD,unsigned char BuysC)
{
#if USR_LCM_IF == 1
if (BuysC) ReadStatusLCD(); //根據(jù)需要檢測(cè)忙
LCMIFDATL = WCLCD;
LcmFlag = 1;
LCMIFCR = 0x84; //Enable interface, write command out
while(LcmFlag);
#else
if (BuysC) ReadStatusLCD(); //根據(jù)需要檢測(cè)忙
LCD_RS = 0;
LCD_RW = 0;
LCD_DataPort = WCLCD;
LCD_delay();
LCD_E = 1;
LCD_delay();
LCD_E = 0;
#endif
}
void Write_Data(unsigned char WDLCD)
{
#if USR_LCM_IF == 1
LCMIFDATL = WDLCD;
LcmFlag = 1;
LCMIFCR = 0x85; //Enable interface, write data out
while(LcmFlag);
#else
ReadStatusLCD(); //檢測(cè)忙
LCD_RS = 1;
LCD_RW = 0;
LCD_DataPort = WDLCD;
LCD_delay();
LCD_E = 1;
LCD_delay();
LCD_E = 0;
#endif
}
/*****************************************************************************
* @name :void GPIO_Init(void)
* @date :2018-11-13
* @function :Set the gpio to push-pull mode
* @parameters :None
* @retvalue :None
******************************************************************************/
void GPIO_Init(void)
{
//P6口設(shè)置成推挽輸出
P6M0=0xff;
P6M1=0x00;
//P3.4口設(shè)置成推挽輸出
P3M0=0x10;
P3M1=0x00;
//P4.2,P4.4,P4.5口設(shè)置成推挽輸出
P4M0=0x34;
P4M1=0x00;
}
/*****************************************************************************
* @name :void LCM_Config(void)
* @date :2018-11-13
* @function :Config LCM
* @parameters :None
* @retvalue :None
******************************************************************************/
void LCM_Config(void)
{
LCMIFCFG = 0x85; //bit7 1:Enable Interrupt, bit1 0:8bit mode; bit0 0:8080,1:6800, Data port P6
LCMIFCFG2 = 0x1f; //RS:P45,RD:P44,WR:P42; Setup Time,HOLD Time
LCMIFSTA = 0x00;
}
/*****************************************************************************
* @name :void DMA_Config(void)
* @date :2020-12-09
* @function :Config DMA
* @parameters :None
* @retvalue :None
******************************************************************************/
void DMA_Config(void)
{
DMA_LCM_AMT = 0x0f; //設(shè)置傳輸總字節(jié)數(shù)：n+1
DMA_LCM_TXAH = (u8)((u16)&gImage_gxw >> 8);
DMA_LCM_TXAL = (u8)((u16)&gImage_gxw);
DMA_LCM_STA = 0x00;
DMA_LCM_CFG = 0x82;
DMA_LCM_CR = 0x80;
}
/*****************************************************************************
* @name :void LCDReset(void)
* @date :2018-08-09
* @function :Reset LCD screen
* @parameters :None
* @retvalue :None
******************************************************************************/
void LCDReset(void)
{
// LCD_PSB = 1; //并口
delay_ms(10);
LCD_RESET = 0;
delay_ms(10);
LCD_RESET = 1;
delay_ms(100);
}
/*****************************************************************************
* @name :void LCD_Init(void)
* @date :2018-08-09
* @function :Initialization LCD screen
* @parameters :None
* @retvalue :None
******************************************************************************/
void LCD_Init(void)
{
LCDReset(); //初始化之前復(fù)位
//*************LCD 初始化**********//
Write_Cmd(0x30,1); //顯示模式設(shè)置,開始要求每次檢測(cè)忙信號(hào)
Write_Cmd(0x01,1); //顯示清屏
Write_Cmd(0x06,1); // 顯示光標(biāo)移動(dòng)設(shè)置
Write_Cmd(0x0C,1); // 顯示開及光標(biāo)設(shè)置
}
void LCDClear(void) //清屏
{
Write_Cmd(0x01,1); //顯示清屏
Write_Cmd(0x34,1); // 顯示光標(biāo)移動(dòng)設(shè)置
Write_Cmd(0x30,1); // 顯示開及光標(biāo)設(shè)置
}
/*****************************************************************************
* @name :void LCM_Interrupt(void)
* @date :2018-11-13
* @function :None
* @parameters :None
* @retvalue :
******************************************************************************/
void LCMIF_DMA_Interrupt(void) interrupt 13
{
if(LCMIFSTA & 0x01)
{
LCMIFSTA = 0x00;
LcmFlag = 0;
}
if(DMA_LCM_STA & 0x01)
{
DmaFlag = 0;
DMA_LCM_CR = 0;
DMA_LCM_STA = 0;
}
}
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