wince下ST7920芯片液晶串口驱动

// LcdSer.cpp : Defines the entry point for the application. // #include "LcdSer.h" #include "DotChar.h" CItsLcd::CItsLcd() { if (FALSE == MapPIO()) { RETAILMSG(1,(_T("::Lcd map io space failed!!\n"))); } if (FALSE == lcd_init()) { RETAILMSG(1,(_T("::Init lcd failed!!\n"))); } } CItsLcd::~CItsLcd() { if (v_pIOPRegs) { VirtualFree((PVOID) v_pIOPRegs, 0, MEM_RELEASE); v_pIOPRegs = NULL; } } void CItsLcd::LCD_PowerUp() { CtlCode(EXIT_SLEEP_MODE); CtlCode(FOUNCTION_SET_RE0_8BIT); } void CItsLcd::LCD_PowerDown() { CtlCode(FOUNCTION_SET_RE1_8BIT_ENPLOT); CtlCode(ENTER_SLEEP_MODE); } BOOL CItsLcd::MapPIO() { BOOL RetValue; v_pIOPRegs = (volatile IOPreg*)VirtualAlloc(0, sizeof(MEMreg), MEM_RESERVE, PAGE_NOACCESS); if (v_pIOPRegs == NULL) { RetValue = FALSE; } else { if (!VirtualCopy((PVOID)v_pIOPRegs, (PVOID)IOP_BASE, sizeof(MEMreg), PAGE_READWRITE | PAGE_NOCACHE)) { RetValue = FALSE; } } if (!RetValue) {//InitializeAddresses - Failed !! if (v_pIOPRegs) { VirtualFree((PVOID) v_pIOPRegs, 0, MEM_RELEASE); } v_pIOPRegs = NULL; return(RetValue); } v_pIOPRegs->rGPBCON &= (~(0x3<<20)); v_pIOPRegs->rGPBCON |= (0x1<<20); v_pIOPRegs->rGPBCON &= (~(0x3<<14)); v_pIOPRegs->rGPBCON |= (0x1<<14); v_pIOPRegs->rGPBCON &= (~(0x3<<10)); v_pIOPRegs->rGPBCON |= (0x1<<10); return(RetValue); } BOOL CItsLcd::lcd_init() { UCHAR command_data; Delay_n_us(40); command_data=0x30; CtlCode(command_data); /*功能设置:一次送8位数据,基本指令集*/ command_data=0x06; CtlCode(command_data); /*点设定:显示字符/光标从左到右移位,DDRAM地址加1*/ command_data=0x0c; CtlCode(command_data); /*显示设定:开显示,不显示光标,不允许当前显示位反白闪动*/ command_data=0x01; CtlCode(command_data); /*清DDRAM*/ command_data=0x02; CtlCode(command_data); /*DDRAM地址归位*/ command_data=0x80; CtlCode(command_data); /*把显示地址设为0X80，即为第一行的首位*/ return TRUE; } void CItsLcd::CtlCode(UCHAR command_data) { //function set, save it. if (0x20 == (command_data & 0xe0)) { cCurrentFun = command_data; } Delay_n_us(100); LCD_CS(TRUE); ChangeRWoption(WRITE_ONLY | RS_CODE); LCD_SEND_BYTE(command_data); LCD_CS(FALSE); } void CItsLcd::LCDPrint(PCHAR DatStr, CHAR Position) { Sleep(1); if (Position != NULL) CtlCode(Position); LCD_CS(TRUE); ChangeRWoption(WRITE_ONLY | RS_DATA); while(*DatStr != '\0') { LCD_SEND_BYTE(*DatStr); DatStr++; } LCD_CS(FALSE); } void CItsLcd::LCDPrint(PCHAR DatStr, INT iVar, CHAR Position) { CHAR temp, temp1, cItoChr[10], DatBuffer[21]; INT i = 0, j = 0; while (*DatStr != '\0') { temp = *DatStr; temp1 = *(DatStr+1); if ('%' == temp) { switch(temp1) { case 'd': case 'D': _itoa(iVar, cItoChr, 10); break; case 'x': case 'X': _itoa(iVar, cItoChr, 16); break; default: _itoa(iVar, cItoChr, 10); break; } while (cItoChr[j] != '\0') { DatBuffer[i] = cItoChr[j]; i++; j++; } if (i%2 != 0) { DatBuffer[i] = 0x20; i++; } DatStr += 2; } DatBuffer[i] = *DatStr; i++; DatStr++; } DatBuffer[i] = '\0'; LCDPrint(DatBuffer, Position); } void CItsLcd::LCD_ReverseVideo(DWORD row) { BYTE FunTemp; FunTemp = cCurrentFun; if ((cCurrentFun & 0x34) != 0x34) { CtlCode(0x34); } switch(row) { case 1: CtlCode(0x04); break; case 2: CtlCode(0x05); break; } CtlCode(FunTemp); } void CItsLcd::LCD_Cursor(DWORD OnorOff, CHAR Position) { if (0 == OnorOff) { CtlCode(0x0c); } else { CtlCode(Position); CtlCode(0x0d); } } //GPB10 片选 void CItsLcd::LCD_CS(BOOL x) { if (TRUE == x) {//设置为高电平 v_pIOPRegs->rGPBDAT |= (1<<10); } else { (v_pIOPRegs->rGPBDAT &= ~(1<<10)); } } //GPB5 数据传输 void CItsLcd::LCD_SET_DAT(BOOL x) { if (x != 0) {//设置为高电平 v_pIOPRegs->rGPBDAT |= (1<<5); } else { (v_pIOPRegs->rGPBDAT &= ~(1<<5)); } } //GPB7 模拟时钟 void CItsLcd::LCD_SCLK_JUMP() { v_pIOPRegs->rGPBDAT |= (1<<7); Delay_n_us(1); (v_pIOPRegs->rGPBDAT &= ~(1<<7)); //Sleep(1); } void CItsLcd::LCD_SEND_BYTE(UCHAR dat) { UCHAR temp, i; temp = dat; temp &= 0xf0; for(i = 0; i < 8; i++) { LCD_SET_DAT(temp&0x80); LCD_SCLK_JUMP(); temp <<= 1; } temp = dat; temp &=0x0f; temp <<= 4; temp &= 0xf0; for(i = 0; i < 8; i++) { LCD_SET_DAT(temp&0x80); LCD_SCLK_JUMP(); temp <<= 1; } } void CItsLcd::Delay_n_us(int n) { LARGE_INTEGER litmp; LONGLONG QPart1,QPart2; double dfMinus, dfFreq, dfTim; if(QueryPerformanceFrequency(&litmp)==FALSE) { return; } dfFreq = (double)litmp.QuadPart; QueryPerformanceCounter(&litmp); QPart1 = litmp.QuadPart; do { QueryPerformanceCounter(&litmp); QPart2=litmp.QuadPart; dfMinus=(double)(QPart2-QPart1); dfTim=dfMinus/dfFreq; }while(dfTim <0.000001*n); } void CItsLcd::ChangeRWoption(BYTE RWoption) { UCHAR temp; temp = 0xf8 | RWoption; BYTE i = 0; for(i = 0; i < 8; i++) { LCD_SET_DAT(temp&0x80); LCD_SCLK_JUMP(); temp <<= 1; } } void CItsLcd::DrawPoint(BYTE LineAdd, BYTE RowAdd) { //计算坐标点 BYTE byteLine = 0x80 | LineAdd; BYTE byteRow = 0x80 | RowAdd; //发送坐标点 //先发送垂直(列)地址 LCD_SEND_BYTE(byteLine); //再发送水平(行)地址 LCD_SEND_BYTE(byteRow); } void CItsLcd::DrawMode(BOOL bEnterOrQuit) { //进入扩充指令集模式 if (TRUE == bEnterOrQuit) { if ((cCurrentFun & 0x34) != 0x34) CtlCode(0x34); ClearDrawScreen(0, 10);//清楚画图 } else if (FALSE == bEnterOrQuit) { CtlCode(0x34);//关闭绘图显示开关 CtlCode(0x30);//退出扩展指令集 } } void CItsLcd::ClearDrawScreen(INT iPosition, INT sizeClear) { BYTE j = 0; BYTE i = 0; for (j = 0; j < sizeClear; j++) { LCD_CS(TRUE); //片选 for (i = 0; i < 32; i++) { ChangeRWoption(WRITE_ONLY | RS_CODE);//更改读写选项 DrawPoint(i, (iPosition + j)); ChangeRWoption(WRITE_ONLY | RS_DATA); LCD_SEND_BYTE(0x00); LCD_SEND_BYTE(0x00); } LCD_CS(FALSE); CtlCode(0x36); } } void CItsLcd::DrawChar(BYTE byteChar, INT iPos) { BYTE i = 0; PBYTE pByteChar; // if (byteChar >= 20 && byteChar <= 126) { pByteChar = AsciiChar[byteChar - 0x20]; } else { pByteChar = AsciiChar[0]; } LCD_CS(TRUE); //片选 for (i = 0; i < 32; i++) { ChangeRWoption(WRITE_ONLY | RS_CODE);//更改读写选项 DrawPoint(i, iPos); ChangeRWoption(WRITE_ONLY | RS_DATA); LCD_SEND_BYTE(pByteChar[i * 2]); LCD_SEND_BYTE(pByteChar[i * 2 + 1]); } LCD_CS(FALSE); CtlCode(0x36);//显示 } void CItsLcd::DrawString(PCHAR strString, INT position) { DWORD i = 0; for (i = 0; i < 10; i++) { if (0 == strString[i]) break; DrawChar(strString[i], position + i); } } void CItsLcd::DrawNumber(BYTE byteNum, INT pos) { //先清除这三个数字位 ClearDrawScreen(pos, 3); BYTE numCharH = (byteNum / 100) + '0';; BYTE numCharM = ((byteNum % 100) / 10) + '0'; BYTE numCharL = ((byteNum % 100) % 10) + '0'; //个位 DrawChar(numCharL, pos + 2); //十位 if ('0' == numCharH) { numCharH = 0x20; if ('0' == numCharM) numCharM = 0x20; } DrawChar(numCharM, pos + 1); //百位 DrawChar(numCharH, pos); }