ucos II+ucGUI+s3c2410+LCD+触摸屏整合01
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- UID
- 872238
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ucos II+ucGUI+s3c2410+LCD+触摸屏整合01
环境：ads2.2＋arm9 ＋s3c2410
注意：由于编译器（ads1.2或2.2）对全局变量初始化为0的不完全支持，有时必须手动初始化为0，切记！！！
一、ucos II移植到arm9 s3c2410
可从官网下载移植代码，基本无需改动。
在os_cpu_a.s中的函数UCOS_IRQHandler中的bl OSIntEnter和bl C_IRQHandler之间插入如下代码
ldr r0, =OSIntNesting
ldrb r0,[r0]
cmp r0,#1
bne XX
ldr r0,=OSTCBCur
ldr r1,[r0]
str sp,[r1] ; store sp in preempted tasks's TCB
XX
二、ucGui 390移植到arm9 s3c2410
1. Lcd驱动：
1） 画点函数：
对dm2410实验板上的lcd，左上为原点（0，0），函数如下：
void LCD2410_SetPixel(int xp, int yp, U16 color, int dindex)
{
*(pLCDBuffer565 + SCREEN_WIDTH*yp + xp) = color;
}
为了达到更快的显示速度，别忘了开启Cache！！！
2）LCD控制器的初始化，对2410函数如下：
int LCD2410_Init(void)
{
if(!isLcdInit)
{
InitLcdPort();
InitLcdRegs();
isLcdInit = 1;
return 0;
}
return 1;
}
void InitLcdPort(void)
{
// LCD port initialize.
s2410IOP->GPCUP = 0xFFFFFFFF;
s2410IOP->GPCCON = 0xAAAAAAAA;
s2410IOP->GPDUP = 0xFFFFFFFF;
s2410IOP->GPDCON = 0xAAAAAAAA;
s2410IOP->GPGCON &= ~(3 << 8); /* Set LCD_PWREN as output */
s2410IOP->GPGCON |= (1 << 8);
s2410IOP->GPGDAT |= (1 << 4); //* Backlight ON
}
void InitLcdRegs(void)
{
s2410LCD->LCDCON1 = (CLKVAL_TFT << 8) | //* VCLK = HCLK / ((CLKVAL + 1) * 2) -> About 7 Mhz
(EACH_FRAME << 7) | //* 0 : Each Frame
(3 << 5) | // TFT LCD Pannel
(12 << 1) | //Y: // 16bpp Mode
(0 << 0) ; // Disable LCD Output
s2410LCD->LCDCON2 = (VBPD << 24) | //* VBPD : ((32-1)&0xff) = 0x1f
(LINEVAL_TFT << 14) | //* LINEVAL_TFT : 480 - 1
(VFPD << 6) | //* VFPD : ((11-1)&0xff) = 0xa
(VSPW << 0) ; //* VSPW : ((2-1) &0x3f) = 0x1
s2410LCD->LCDCON3 = (HBPD << 19) | //* HBPD : ((88-1)&0x7f)
(HOZVAL_TFT << 8) | //* HOZVAL_TFT : 800 - 1
(HFPD << 0) ; //* HFPD : ((40-1)&0xff)
s2410LCD->LCDCON4 = (MVAL << 8) | //* MVAL : 13
(HSPW << 0) ; //* HSPW : ((128-1)&0xff)
s2410LCD->LCDCON5 = (0 << 12) | // BPP24BL : LSB valid
(1 << 11) | // FRM565 MODE : 5:5:5:1 Format
(0 << 10) | // INVVCLK : VCLK Falling Edge
(1 << 9) | // INVVLINE : Inverted Polarity
(1 << 8) | // INVVFRAME : Inverted Polarity
(0 << 7) | // INVVD : Normal
(0 << 6) | // INVVDEN : Normal
(0 << 5) | // INVPWREN : Normal
(0 << 4) | // INVENDLINE : Normal
(1 << 3) | // PWREN : Disable PWREN
(0 << 2) | // ENLEND : Disable LEND signal
(0 << 1) | // BSWP : Swap Disable
(1 << 0) ; // HWSWP : Swap Enable
s2410LCD->LCDSADDR1 = ((FRAMEBUF_DMA_BASE >> 22) << 21) |
((M5D(FRAMEBUF_DMA_BASE >> 1)) << 0);
s2410LCD->LCDSADDR2=M5D( (FRAMEBUF_DMA_BASE+(LCD_XSIZE_TFT*LCD_YSIZE_TFT*2))>>1 );
s2410LCD->LCDSADDR3=(((LCD_XSIZE_TFT-LCD_XSIZE_TFT)/1)<<11)|(LCD_XSIZE_TFT/1);
s2410LCD->LCDINTMSK|=(3); // MASK LCD Sub Interrupt
s2410LCD->LPCSEL&=(~7); // Disable LPC3600
s2410LCD->TPAL=0; // Disable Temp Palette
s2410LCD->LCDCON1 |= 1;
}
其中，部分变量、常量定义如下：
#define LCD_XSIZE_TFT (800)
#define LCD_YSIZE_TFT (480)
#define HOZVAL_TFT (LCD_XSIZE_TFT-1)
#define LINEVAL_TFT (LCD_YSIZE_TFT-1)
#define MVAL (13)
#define MVAL_USED (1)
#define EACH_FRAME (0)
//STN/CSTN timing parameter for LCBHBT161M(NANYA)
#define WLH (3)
#define WDLY (3)
#define LINEBLANK (1 &0xff)
#define VBPD ((32-1)&0xff)
#define VFPD ((11-1)&0xff)
#define VSPW ((2-1) &0x3f)
#define HBPD ((88-1)&0x7f)
#define HFPD ((40-1)&0xff)
#define HSPW ((128-1)&0xff)
#define CLKVAL_TFT (0)
#define M5D(n) ((n) & 0x1fffff)
#define SCREEN_WIDTH 800 //800
#define SCREEN_HEIGHT 480 //480
#define FRAMEBUF_DMA_BASE (0x35000000)
U16* pLCDBuffer565=(U16*)FRAMEBUF_DMA_BASE;
3）填写配置文件LCDConf.h
#define LCD_XSIZE (800) /* X-resolution of LCD, Logical coor. */
#define LCD_YSIZE (480) /* Y-resolution of LCD, Logical coor. */
#define LCD_BITSPERPIXEL (16)
#define LCD_CONTROLLER 1
#define LCD_SWAP_RB_0 1
2．触摸屏驱动：
触摸屏驱动计算出触摸屏的坐标（x，y），对dm2410实验板上的触摸屏，左下为原点，但不一定是（0，0）。两个函数：
1） 设置中断向量，开中断：
void SetTSInterrupt(void)
{
rADCDLY = (50000);
rADCCON = (1<<14)|(ADCPRS<<6)|(7<<3)|(0<<2)|(0<<1)|(0);
rADCTSC = (0<<8)|(1<<7)|(1<<6)|(0<<5)|(1<<4)|(0<<3)|(0<<2)|(3);
pISR_ADC = (U32)TSIrqISR; //
rINTMSK &= ~(BIT_ADC);
rINTSUBMSK &= ~(BIT_SUB_TC);
}
2） 中断处理函数：
static void TSIrqISR(void)
{
int i;
U32 Pt[6];
rINTSUBMSK |= (BIT_SUB_ADC|BIT_SUB_TC);
if(rADCDAT0 & 0x8000)
{//抬起
isDown = 0;
rADCTSC &= 0xff; // Set stylus down interrupt
TX = -1;
TY = -1; //抬起触笔时，TX,TY要值成不大于0的数
}
else //按下
{ isDown = 1;
rADCTSC=(0<<8)|(0<<7)|(0<<6)|(1<<5)|(1<<4)|(1<<3)|(0<<2)|(1);
for(i=0;i<LOOP;i++); //delay to set up the next channel
for(i=0;i<5;i++) //5 times
{
rADCCON|=0x1; // Start X-position conversion
while(rADCCON & 0x1); // Check if Enable_start is low
while(!(0x8000&rADCCON)); // Check ECFLG
Pt=(0x3ff&rADCDAT0);
}
Pt[5]=(Pt[0]+Pt[1]+Pt[2]+Pt[3]+Pt[4])/5;//多次采样取平均值
TX = Pt[5];
rADCTSC=(0<<8)|(0<<7)|(1<<6)|(1<<5)|(0<<4)|(1<<3)|(0<<2)|(2);
for(i=0;i<LOOP;i++); //delay to set up the next channel
for(i=0;i<5;i++) //5 times
{
rADCCON|=0x1; // Start Y-position conversion
while(rADCCON & 0x1); // Check if Enable_start is low
while(!(0x8000&rADCCON)); // Check ECFLG
Pt=(0x3ff&rADCDAT1);
}
Pt[5]=(Pt[0]+Pt[1]+Pt[2]+Pt[3]+Pt[4])/5;// 多次采样取平均值
TY = Pt[5];
rADCTSC=(1<<8)|(1<<7)|(1<<6)|(0<<5)|(1<<4)|(0<<3)|(0<<2)|(3);
}
//cprintf("%d,%d\n",TX,TY);
OSMboxPost(TouchMbox, 0);//向处理触摸进程发消息
rSUBSRCPND |= BIT_SUB_TC;
rINTSUBMSK &= ~(BIT_SUB_TC); // Unmask sub interrupt (TC)
ClearPending(BIT_ADC);
}
3） 需要的量：
#define LOOP 1
#define ADCPRS 0x27
int TX=0;//触摸坐标x
int TY=0;//触摸坐标y
extern OS_EVENT *TouchMbox;
int isDown;
4） 触摸屏校准：
Ucgui390中，带有一校准程序（于TOUCH_Calibrate.c中），可以改写为我所用（见下文）。
也可设置默认值，测出左下最小坐标minX，minY和右上最大坐标maxX，maxY，注意是触摸坐标，不是lcd坐标，如下填写配置文件GUITouchConf.h:
#define GUI_TOUCH_AD_LEFT minX
#define GUI_TOUCH_AD_TOP maxY
#define GUI_TOUCH_AD_RIGHT maxX
#define GUI_TOUCH_AD_BOTTOM minY
#define GUI_TOUCH_SWAP_XY 0
#define GUI_TOUCH_MIRROR_X 1
#define GUI_TOUCH_MIRROR_Y 1
#define TOUCH_NEED_CALIBRATE 0
3、如下填写GUIConf.h：
#define GUI_OS (1) /* Compile with multitasking support */
#define GUI_SUPPORT_TOUCH (1) /* Support a touch screen (req. win-manager) */
#define GUI_SUPPORT_UNICODE (1) /* Support mixed ASCII/UNICODE strings */
#define GUI_SUPPORT_CHINESE (1)
#define GUI_DEFAULT_FONT &GUI_Font6x8
#define GUI_ALLOC_SIZE 12500 /* Size of dynamic memory ... For WM and memory devices*/
#define GUI_WINSUPPORT 1 /* Window manager package available */
#define GUI_SUPPORT_MEMDEV 1 /* Memory devices available */
#define GUI_SUPPORT_AA 1 /* Anti aliasing available */
4、ucgui与lcd驱动函数的连接，即修改LCDWin.c文件：
在LCDWin.c中，去掉无用的头文件包含。
#define SETPIXEL(x, y, c) LCD2410_SetPixel(x, y, c, LCD_DISPLAY_INDEX)
#define GETPIXEL(x, y) LCD2410_GetPixel(x,y, LCD_DISPLAY_INDEX)
即将“LCDSIM_XX”改成“LCD2410_XX”，这两个函数位于lcd驱动文件中。
……………………………
#define SETPIXEL(x, y, c) \
if (!_CheckBound(c)) { \
LCD2410_SetPixel(x, y, c, LCD_DISPLAY_INDEX); \
}
#else
#define SETPIXEL(x, y, c) LCD2410_SetPixel(x, y, c, LCD_DISPLAY_INDEX)
#endif
#define GETPIXEL(x, y) LCD2410_GetPixel(x,y,LCD_DISPLAY_INDEX)
……………………………
static void _XorPixel(int x, int y) {
unsigned int Index = LCD_L0_GetPixelIndex(x,y);
LCD2410_SetPixel(x, y, LCD_NUM_COLORS-1-Index, LCD_DISPLAY_INDEX);
}
……………………………
int LCD_L0_Init(void) {
return LCD2410_Init();//调用lcd初始化函数
} |
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