用ARM驱动触摸屏,中断方式
打印到串口终端的信息如下:
Test Touch Screen...
HandlerIRQ...
Select IRQ function...
HandlerTC...
Auto xy mode...
鎬
显示已经跳转到HandlerTC子函数,也进入了自动xy模式.
可是怎么就死了呢?
有时候多按几下复位键,又能够读出xy坐标:
Test Touch Screen...
HandlerIRQ...
Select IRQ function...
HandlerTC...
Auto xy mode...
HandlerADC...
X=0287 Y=0316
很奇怪,不知道是哪里出错了
贴上自己的程序:
#define ISR_ADC_OFT 31
void HandlerTC(void)
{
//Disable TC intrrupt
rSUBSRCPND |= (1<<9);
rSRCPND |= (0x8000);
rINTPND |= (0x8000);
UartSendString("HandlerTC...");
if(rADCDAT0 & 0x8000)
{
rADCTSC = (1<<7) | (1<<6) | (1<<4) | (3);
UartSendString("wait intrrupt mode...");
}
else
{
//AUTO_PST = 1, PULL_UP = 1,XY_PST = 0
rADCTSC = (1<<3) | (1<<2);
UartSendString("Auto xy mode...");
rADCCON |= 1;//ADC start
}
}
void HandlerADC(void)
{
//Disable ADC intrrupt
rSUBSRCPND |= (1<<10);
rSRCPND |= (0x8000);
rINTPND |= (0x8000);
UartSendString("HandlerADC...");
SEND_XY_VALUE;
rADCTSC = (1<<7) | (1<<6) | (1<<4) | (3);
}
void TouchScrIntHandle(void)
{
UartSendString("Select IRQ function...");
if(rSUBSRCPND & (1<<9))
HandlerTC();
else if(rSUBSRCPND & (1<<10))
HandlerADC();
else
UartSendString("other interrupt occur...");
}
void SysClkSet(void)
{
//Fin = 12MHz, FCLK = 400MHz, FCLK:HCLK:PCLK = 1:4:4
//FCLK = 400MHz,HCLK = 100MHz, PCLK = 100MHz;
rMPLLCON = (42<<12) | (1<<4);//FCLK = 400MHz
rCLKDIVN = (2<<1);//FCLK:HCLK:PCLK = 1:4:4
}
void ADC_Init(void)
{
isr_handle_array[ISR_ADC_OFT] = TouchScrIntHandle;
rINTMSK &= ~(1<<31);//Enable ADC interrupt
rINTSUBMSK &= ~(1<<9);//Enable INT_TC interrupt
rINTSUBMSK &= ~(1<<10);//Enable INT_ADC_S interrupt
//PRSCVL = 99, A/D CLK = PCLK / (PRSCVL + 1)= 1MHz
rADCCON = (1<<14) | (99<<6);
rADCDLY = 50000;
//UD_SEN = 0, PULL_UP = 0, XP_SEN = 1, XM_SEN = 0
//YP_SEN = 1, YM_SEN = 1, XY_PST = 3.
rADCTSC = (1<<7) | (1<<6) | (1<<4) | (3);
//AUTO_PST = 1,
//rADCTSC |= (1<<2);
//AUTO_PST = 1,
//rADCDAT0 |= (1<<14);
//rADCDAT1 |= (1<<14);
}
void LCD_Init(void)
{
//I/O port Init,
rGPCUP = 0xffffffff;// Disable pullup
rGPCCON = 0xaaaaaaaa;// GPIO管脚用于VD[7:0],LCDVF[2:0],VM,VFRAME,VLINE,VCLK,LEND
rGPDUP = 0xffffffff;// Disable pullup
rGPDCON = 0xaaaaaaaa;// GPIO管脚用于VD[23:8]
rGPGUP = 0xffffffff;
rGPGCON = (3<<8);//GPG4:LCD_PWREN
//CLKVAL = 4, VCLK = HCLK / [(CLKVAL + 1) * 2] = 50MHz
//PNRMODE = 0b11, TFT LCD
//BPPMODE = 0b1100, 16BPP
rLCDCON1 = (4<<8) | (3<<5) | (12<<1);
//VBPD = 1, LINEVAL = 320-1, VFPD = 5, VSPW = 1
rLCDCON2 = (1<<24) | (319<<14) | (5<<6) | (1);
//HBPD = 36, HOZVAL = 240-1, HPFD = 19,
rLCDCON3 = (36<<19) | (239<<8) | (19);
//HSPW = 5,
rLCDCON4 = 5;
//FRM565 = 1, INVVLINE = 1, INVVFRAME = 1, BSWP = 1
rLCDCON5 = (1<<11) | (1<<9) | (1<<8) | (1<<1);
rLCDSADDR1 = ((LCDBUFFER>>22)<<21) | (0x1FFFFF & (LCDBUFFER>>1));
rLCDSADDR2 = (0x1FFFFF) & ((LCDBUFFER + 240*320*2)>>1);
rLCDSADDR3 = 120;
}
void HandlerIRQ(void)
{
unsigned long oft = rINTOFFSET;
UartSendString("HandlerIRQ...");
//清中断
if (oft == 4)
rEINTPEND = 1<<7;
rSRCPND = 1<<oft;
rINTPND = rINTPND;
isr_handle_array[oft]();
}
void Isr_Init(void)
{
rINTMOD=0x0; // All=IRQ mode
rINTMSK=BIT_ALLMSK; // All interrupt is masked.
pISR_IRQ = (int)HandlerIRQ;
}
int Main(void)
{
unsigned int ADDR;
SysClkSet();
Isr_Init();
UartInit();
ADC_Init();
LCD_Init();
rTPAL |= (0xff);
rTPAL |= (1<<24);
UartSendString("Test Touch Screen...");
for(;;)
{
;
}
}
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