www.pudn.com > S3C2440_uCos-II.rar > lcd_drv.c
#include#include #include #include #include //======================= #include "../UCOS-II/includes.h" /* uC/OS interface */ //======================= #include "2440addr.h" #include "lcd_drv.h" //TFT 640480 //unsigned int __LCDFrameBuffer[VIDEO_VISIBLE_ROWS][LCD_XSIZE_TFT_640480]; volatile unsigned char *__LCDFrameBuffer; static OS_EVENT *Sem_LcdDraw; #define WRDATA (1) #define POLLACK (2) #define RDDATA (3) #define SETRDADDR (4) typedef unsigned char U8; typedef unsigned int U32; /*#define IIC_INTPEND 0x10*/ #define IICBUFSIZE 0x20 static U8 _iicData[IICBUFSIZE]; static int _iicDataCount; static int _iicStatus; static int _iicMode; static int _iicPt; static void IicPoll(void); static void Run_IicPoll(void); void Uart0_Printf(char *fmt,...); static void Delay(int sec) { int dl; while(sec != -1){ sec--; for (dl=4900;dl>0;dl--); } return; } //**************[ iic_wr ]***************************************** static void iic_wr(U32 slvAddr,U32 addr,U8 data) { _iicMode = WRDATA; _iicPt = 0; _iicData[0] = (U8)addr; _iicData[1] = data; _iicDataCount = 2; rIICDS = slvAddr; //0xa0 //Master Tx mode, Start(Write), IIC-bus data output enable //Bus arbitration sucessful, Address as slave status flag Cleared, //Address zero status flag cleared, Last received bit is 0 rIICSTAT = 0xf0; //Clearing the pending bit isn't needed because the pending bit has been cleared. while(_iicDataCount!=-1) Run_IicPoll(); _iicMode = POLLACK; while(1) { rIICDS = slvAddr; _iicStatus = 0x100; //To check if _iicStatus is changed rIICSTAT = 0xf0; //Master Tx, Start, Output Enable, Sucessful, Cleared, Cleared, 0 rIICCON = 0xaf; //Resumes IIC operation. while(_iicStatus==0x100) Run_IicPoll(); if(!(_iicStatus & 0x1)) break; //When ACK is received } rIICSTAT = 0xd0; //Master Tx condition, Stop(Write), Output Enable rIICCON = 0xaf; //Resumes IIC operation. Delay(1); //Wait until stop condtion is in effect. //Write is completed. } //************************[ iic_rd ]******************************** static U8 iic_rd(U32 slvAddr,U32 addr) { _iicMode = SETRDADDR; _iicPt = 0; _iicData[0] = (U8)addr; _iicDataCount = 1; rIICDS = slvAddr; rIICSTAT = 0xf0; //MasTx,Start //Clearing the pending bit isn't needed because the pending bit has been cleared. while(_iicDataCount!=-1) Run_IicPoll(); _iicMode = RDDATA; _iicPt = 0; _iicDataCount = 1; rIICDS = slvAddr; rIICSTAT = 0xb0; //Master Rx,Start rIICCON = 0xaf; //Resumes IIC operation. while(_iicDataCount!=-1) Run_IicPoll(); return _iicData[1]; } //**********************[ Run_IicPoll ]********************************* static void Run_IicPoll(void) { if(rIICCON & 0x10) //Tx/Rx Interrupt Enable IicPoll(); } //**********************[IicPoll ]************************************** static void IicPoll(void) { U32 iicSt,i; iicSt = rIICSTAT; if(iicSt & 0x8){} //When bus arbitration is failed. if(iicSt & 0x4){} //When a slave address is matched with IICADD if(iicSt & 0x2){} //When a slave address is 0000000b if(iicSt & 0x1){} //When ACK isn't received switch(_iicMode) { case POLLACK: _iicStatus = iicSt; break; case RDDATA: if((_iicDataCount--)==0) { _iicData[_iicPt++] = rIICDS; rIICSTAT = 0x90; //Stop MasRx condition rIICCON = 0xaf; //Resumes IIC operation. Delay(1); //Wait until stop condtion is in effect. //Too long time... //The pending bit will not be set after issuing stop condition. break; } _iicData[_iicPt++] = rIICDS; //The last data has to be read with no ack. if((_iicDataCount)==0) rIICCON = 0x2f; //Resumes IIC operation with NOACK. else rIICCON = 0xaf; //Resumes IIC operation with ACK break; case WRDATA: if((_iicDataCount--)==0) { rIICSTAT = 0xd0; //stop MasTx condition rIICCON = 0xaf; //resumes IIC operation. Delay(1); //wait until stop condtion is in effect. //The pending bit will not be set after issuing stop condition. break; } rIICDS = _iicData[_iicPt++]; //_iicData[0] has dummy. for(i=0;i<10;i++); //for setup time until rising edge of IICSCL rIICCON = 0xaf; //resumes IIC operation. break; case SETRDADDR: // Uart_Printf("[S%d]",_iicDataCount); if((_iicDataCount--)==0) { break; //IIC operation is stopped because of IICCON[4] } rIICDS = _iicData[_iicPt++]; for(i=0;i<10;i++); //for setup time until rising edge of IICSCL rIICCON = 0xaf; //resumes IIC operation. break; default: break; } } static int VGADAC_init(void) { //int var0,var1; unsigned int lcdcon; lcdcon = rLCDCON1; rLCDCON1 = lcdcon & ~1; rGPEUP |= 0xc000; //Pull-up disable rGPECON = (rGPECON&~0xf0000000)|0xa0000000; //GPE15:IICSDA , GPE14:IICSCL //Enable ACK, Prescaler IICCLK=PCLK/16, Enable interrupt, Transmit clock value Tx clock=IICCLK/16 //IICCON = 0xaf; rIICCON = (1<<7) | (0<<6) | (1<<5) | (0xf); rIICADD = 0x10; //2410 slave address = [7:1] rIICSTAT = 0x10; //IIC bus data output enable(Rx/Tx) //Uart0_Printf("VGA set1!\n"); iic_wr(0xec,4,0x20); //Uart0_Printf("VGA set2!\n"); iic_wr(0xec,7,0x8c); //Uart0_Printf("VGA set3!\n"); iic_wr(0xec,14,0x1b); //Uart0_Printf("VGA set4!\n"); iic_wr(0xec,13,0x03); //Uart0_Printf("VGA ve!\n"); if (iic_rd(0xec,4) != 0x20) return -1; if (iic_rd(0xec,7) != 0x8c) return -1; if (iic_rd(0xec,14) != 0x1b) return -1; rLCDCON1 = lcdcon; return 0; } void Lcd_Init() { //int ClkVal; __LCDFrameBuffer = (unsigned char*)_LCD_FBADDRESS;//+0x800000; if (VGADAC_init()!=0) { Uart0_Printf("VGA Initial error!\n"); while(1); //return; } //Uart0_Printf("VGA Initial ok!\n"); rGPCUP=0xffffffff; // Disable Pull-up register rGPCCON=0xaaaaaaaa; //Initialize VD[7:0],LCDVF[2:0],VM,VFRAME,VLINE,VCLK,LEND rGPDUP=0xffffffff; // Disable Pull-up register rGPDCON=0xaaaaaaaa; //Initialize VD[23:8] // 时钟25MHz MVAL值 TFT 24BPP //rLCDCON1=(CLKVAL_TFT_640480<<8)|(MVAL_USED<<7)|(3<<5)|(13<<1)|0; // 时钟25MHz MVAL值 TFT 16BPP rLCDCON1=(CLKVAL_TFT_640480<<8)|(MVAL_USED<<7)|(3<<5)|(12<<1)|0; rLCDCON2=(VBPD_640480<<24)|(LINEVAL_TFT_640480<<14)|(VFPD_640480<<6)|(VSPW_640480); rLCDCON3=(HBPD_640480<<19)|(HOZVAL_TFT_640480<<8)|(HFPD_640480); rLCDCON4=(MVAL<<8)|(HSPW_640480); //0x00 XX XX XX 5:5:5:I // --- R G B //rLCDCON5=(0<<12)|(0<<11)|(1<<9)|(1<<8)|1; // BPP24:MSB,HSYNC and VSYNC are inverted //0x00 XX XX XX 5:6:5 // --- R G B rLCDCON5=(0<<12)|(1<<11)|(1<<9)|(1<<8)|1; // BPP24:MSB,HSYNC and VSYNC are inverted rLCDSADDR1=( ( (unsigned int)_LCD_FBADDRESS >> 22) << 21 ) | M5D ( (unsigned int)_LCD_FBADDRESS >> 1 ); rLCDSADDR2=M5D( ( (unsigned int)_LCD_FBADDRESS + (VIDEO_VISIBLE_COLS*VIDEO_VISIBLE_ROWS*VIDEO_PIXEL_SIZE ) ) >> 1 ); rLCDSADDR3=(0<<11)|(VIDEO_VISIBLE_COLS*2); //rLPCSEL&=(~7); // Disable LPC3600 rTCONSEL&=(~0x07); // Disable LPC3600 rTPAL=0; // Disable Temp Palette // // 为了避免屏幕抖动,先不打开液晶控制器 // Sem_LcdDraw = OSSemCreate(1); /* 创建1个信号量，初值为1 */ rLCDCON1 = rLCDCON1 | 1; } void Lcd_Switch(int cmd) { if (cmd) { rLCDCON1 |= 1; } else { rLCDCON1 &= (~((unsigned int)1)); } } void Lcd_White(void) { memset((unsigned char *)__LCDFrameBuffer, 0xff, VIDEO_VISIBLE_COLS*VIDEO_VISIBLE_ROWS*VIDEO_PIXEL_SIZE); } void Lcd_Cls() { memset((unsigned char *)__LCDFrameBuffer,0,VIDEO_VISIBLE_COLS*VIDEO_VISIBLE_ROWS*VIDEO_PIXEL_SIZE); } void Glib_PutPixel(unsigned int x , unsigned int y , unsigned int c) { //unsigned char *fb; unsigned char rcolor = (c>>16)&0xff; unsigned char gcolor = (c>>8)&0xff; unsigned char bcolor = c&0xff; if( x < VIDEO_VISIBLE_COLS && y < VIDEO_VISIBLE_ROWS ) { *(unsigned short *)(__LCDFrameBuffer + ((y) * VIDEO_VISIBLE_COLS + (x))*VIDEO_PIXEL_SIZE) = //c; (((rcolor>>3)<<11)|((gcolor>>2)<<5)|(bcolor>>3)); // lcd format 5:6:5 for 2440 } } static void Lcd_PutASCII(unsigned int x,unsigned int y,unsigned char ch,unsigned int c,unsigned int bk_c,unsigned int st) { unsigned short int i,j; unsigned char *pZK,mask,buf; pZK = &__VGA[ch*16]; for( i = 0 ; i < 16 ; i++ ) { mask = 0x80; buf = pZK[i]; for( j = 0 ; j < 8 ; j++ ) { if( buf & mask ) { Glib_PutPixel(x+j,y+i,c); }else { if( !st ) { Glib_PutPixel(x+j,y+i,bk_c); } } mask = mask >> 1; } } } void Lcd_PutHZ(unsigned int x,unsigned int y,unsigned short int QW,unsigned int c,unsigned int bk_c,unsigned int st) { /*This Function is EMPTY now, pls contact with FriendlyARM */ return ; } //---------------------- void Lcd_printf(unsigned int x,unsigned int y,unsigned int c,unsigned int bk_c,unsigned int st,char *fmt,...) { char __LCD_Printf_Buf[256]; va_list ap; unsigned char *pStr = (unsigned char *)__LCD_Printf_Buf; unsigned int i = 0; va_start(ap,fmt); vsprintf(__LCD_Printf_Buf,fmt,ap); va_end(ap); while(*pStr != 0 ) { switch(*pStr) { case '\n' : { break; } default: { if( *pStr > 0xA0 & *(pStr+1) > 0xA0 ) //中文输出 { Lcd_PutHZ( x , y , (*pStr - 0xA0)*0x0100 + *(pStr+1) - 0xA0 , c , bk_c , st); pStr++; i++; x += 16; }else //英文输出 { Lcd_PutASCII( x , y , *pStr , c , bk_c , st ); x += 8; } break; } } pStr++; i++; if( i > 256 ) break; } } void Glib_Rectangle(unsigned int x1,unsigned int y1,unsigned int x2,unsigned int y2,unsigned int color) { Glib_Line(x1,y1,x2,y1,color); Glib_Line(x2,y1,x2,y2,color); Glib_Line(x1,y2,x2,y2,color); Glib_Line(x1,y1,x1,y2,color); } void Glib_FilledRectangle(unsigned int x1,unsigned int y1,unsigned int x2,unsigned int y2,unsigned int color) { int i; for(i=y1;i<=y2;i++) Glib_Line(x1,i,x2,i,color); } // LCD display is flipped vertically // But, think the algorithm by mathematics point. // 3I2 // 4 I 1 // --+-- <-8 octants mathematical cordinate // 5 I 8 // 6I7 void Glib_Line(unsigned int x1,unsigned int y1,unsigned int x2,unsigned int y2,unsigned int color) { int dx,dy,e; dx=x2-x1; dy=y2-y1; if(dx>=0) { if(dy >= 0) // dy>=0 { if(dx>=dy) // 1/8 octant { e=dy-dx/2; while(x1<=x2) { Glib_PutPixel(x1,y1,color); if(e>0){y1+=1;e-=dx;} x1+=1; e+=dy; } } else // 2/8 octant { e=dx-dy/2; while(y1<=y2) { Glib_PutPixel(x1,y1,color); if(e>0){x1+=1;e-=dy;} y1+=1; e+=dx; } } } else // dy<0 { dy=-dy; // dy=abs(dy) if(dx>=dy) // 8/8 octant { e=dy-dx/2; while(x1<=x2) { Glib_PutPixel(x1,y1,color); if(e>0){y1-=1;e-=dx;} x1+=1; e+=dy; } } else // 7/8 octant { e=dx-dy/2; while(y1>=y2) { Glib_PutPixel(x1,y1,color); if(e>0){x1+=1;e-=dy;} y1-=1; e+=dx; } } } } else //dx<0 { dx=-dx; //dx=abs(dx) if(dy >= 0) // dy>=0 { if(dx>=dy) // 4/8 octant { e=dy-dx/2; while(x1>=x2) { Glib_PutPixel(x1,y1,color); if(e>0){y1+=1;e-=dx;} x1-=1; e+=dy; } } else // 3/8 octant { e=dx-dy/2; while(y1<=y2) { Glib_PutPixel(x1,y1,color); if(e>0){x1-=1;e-=dy;} y1+=1; e+=dx; } } } else // dy<0 { dy=-dy; // dy=abs(dy) if(dx>=dy) // 5/8 octant { e=dy-dx/2; while(x1>=x2) { Glib_PutPixel(x1,y1,color); if(e>0){y1-=1;e-=dx;} x1-=1; e+=dy; } } else // 6/8 octant { e=dx-dy/2; while(y1>=y2) { Glib_PutPixel(x1,y1,color); if(e>0){x1-=1;e-=dy;} y1-=1; e+=dx; } } } } }