drv_touch.c

一款SmartPhone的驱动代码

#include "sysMCU.h"

#include "sysGUI.h"


extern unsigned short x_avrg;
extern unsigned short y_avrg;
extern unsigned short x_add[AD_DATA_NUM];	// A/D data of T/P x axes 
extern unsigned short y_add[AD_DATA_NUM];	// A/D data of T/P y axes 

extern unsigned char x_tp_map[256];//814
extern unsigned char y_tp_map[512];//814

extern unsigned char keytemp,k5_data;// define in drv_key.c
extern unsigned short bKeyStatus;   // Key status 0: up 1:down define in drv_key.c

int times;

unsigned short get_avrg(unsigned short *);

/****************************************
 * init_io
 *   Type :	void
 *   Ret val :	none
 *   Argument :	void
 *   Function :	Initialize TouchPanel,AD I/O port; 
 *				Initialize Interrupt K63 port interrupt FPT3.
 ****************************************/
void init_io(void)
{
 	// set p02(BXH),p03(BXL),p15(BYH),p16(BYL) as touch panel control IO PORT 
 	*(volatile unsigned char *)IO_CFP0_ADDR &= 0x03;
 	*(volatile unsigned char *)IO_CFP1_ADDR &= 0x90;
 	//set p02,p03,p15,p16 output	
 	*(volatile unsigned char *)IO_IOC0_ADDR |= 0x0c;
 	*(volatile unsigned char *)IO_IOC1_ADDR |= 0x60;
 	
 	
 		
 	// set P15(BYH)=1,P02(BXH)=1,P16(BYL)=1,P03(BXL)=0
 	*(volatile unsigned char *)IO_P0D_ADDR &= 0xf7;	
 	*(volatile unsigned char *)IO_P0D_ADDR |= 0xf4;		
	*(volatile unsigned char *)IO_P1D_ADDR |= 0x60;			


	//select k62 as interrupt factor FPT2 input port
	*(volatile unsigned char *)IN_SPT0_SPT3_ADDR &=0xcf;
	*(volatile unsigned char *)IN_SPT0_SPT3_ADDR |=IN_SPT2_K62;
	//select input signal polarity for port interrupt generation,low level
	*(volatile unsigned char *)IN_SPP_ADDR &=0x0fb;
	//select an edge trigger for port interrupt generation
	*(volatile unsigned char *)IN_SEP_ADDR |=0x04;
	//set FPT2 interrupt priority
	*(volatile unsigned char *)INT_PP2_PP3_ADDR &=0xf0;
	*(volatile unsigned char *)INT_PP2_PP3_ADDR |=INT_PRIL_LVL4;
	
	//set k60,k61 as touch panel ad input port
	*(volatile unsigned char *)IN_CFK6_ADDR |=0x03;
	//[0x40181], select perscaler clock source	: OCS3 
	*(volatile unsigned char *)OSC_PSCDT0_ADDR = OSC_PSCDT0_OSC3;		
	// set input clock :recommended maximum clock is 2M and ad convert time is 10us		
	//fpscin/32 is set and selected clock is output from prescale to ad convert
	*(volatile unsigned char *)PRESC_PSAD_ADDR = 0x0c;		
	//select A/D start AD0 and end chanel AD0 
	*(volatile unsigned char *)AD_CS_ADDR = AD_CE_0 | AD_CS_0;		
	//A/D converter enable, A/D converter stop, A/D converter over write error clear 
	*(volatile unsigned char *)AD_OWE_ADDR = AD_ADE_ENA | AD_ADST_STOP | AD_OWE_NOERR;		
	//select A/D normal mode & trigger by software 
	*(volatile unsigned char *)AD_CH_ADDR = AD_TS_SOFT;		
	//select the sampling time x9 clock 
	*(volatile unsigned char *)AD_ST_ADDR = AD_ST_9;		
	//set AD Interrupt request on,not IDMA request on	
	*(volatile unsigned char *)INT_RS1_RADE_RP4_ADDR &=0xFD;	
	//set AD interrupt level 7	
	*(volatile unsigned char *)INT_PSIO1_PAD_ADDR &= 0x0f;
	*(volatile unsigned char *)INT_PSIO1_PAD_ADDR |= INT_PRIH_LVL4;	
	//Reset A/D converter interrupt factor flag	
	*(volatile unsigned char *)INT_FADE_FCTM_FP4_ADDR |= INT_FADE;	
	//set AD interrupt enable	
	//*(volatile unsigned char *)INT_EADE_ECTM_EP4_ADDR |= INT_EADE;	
	
	// [0x40270]
	//set FPT2 interrupt enable
//	*(volatile unsigned char *)INT_EP0_EK_ADDR |= 0x04;	
}	

void enable_tp_int(void)
{
	*(volatile unsigned char *)0x40280 |= 0x04;
	//set FPT2 interrupt enable
	*(volatile unsigned char *)INT_EP0_EK_ADDR |= 0x04;	
}

/*******************************************************************************
 * int_TP
 *   Type :	void
 *   Ret val :	none
 *   Argument :	void
 *   Function :	touch panel interrupt fuction
 *		k63 used as touch panel hardware interrupt input port
 *******************************************************************************/

void int_TP(void)
{
	asm("pushn %r15");
	// [0x40270]
	//set FPT2 interrupt disable
	*(volatile unsigned char *)INT_EP0_EK_ADDR &= 0x0fb;
		
	// reset k62 interrupt flag
	*(volatile unsigned char *)INT_FP0_FK_ADDR |= 0x04;	

	iset_flg(GUI_EVENTID,0x001);//added  for Upper layer indication

	asm("popn %r15");
	asm("reti");
}
/*******************************************************************************
 * get_adjust_point
 *   Type :	void
 *   out put :	x,y ad data value
 *   Argument :	void
 *   Function :	get pendown point coordinate value when adjust touch panel
 *******************************************************************************/
void get_adjust_point(void)
{
	*(volatile unsigned char *)INT_FADE_FCTM_FP4_ADDR |= 0x01;	/* Reset A/D interrupt factor flag*/
	
	times = 0;	
	
	while (times<AD_DATA_NUM)
	{
		{ int i;
		for (i = 0;i< 100;i++)
			asm("nop");
		}

	
		// Sample Rx:BXH(P02)=0;BXL(P03)=1;BYH(P15)=1;BYL(P16)=0
		*(volatile unsigned char *)IO_P0D_ADDR &= 0xfb;		
		*(volatile unsigned char *)IO_P1D_ADDR &= 0xbf;	
		*(volatile unsigned char *)IO_P0D_ADDR |= 0x08;	
		*(volatile unsigned char *)IO_P1D_ADDR |= 0x20;	
		
		*(volatile unsigned char *)AD_CS_ADDR = (AD_CE_1 | AD_CS_1);	/* AD1 for Rx sampling */
		*(volatile unsigned char *)AD_OWE_ADDR |= AD_ADST_RUN;	// start run AD
		
		// waiting Rx coordinate got
		//cIntFlag = *(volatile unsigned char *)INT_FADE_FCTM_FP4_ADDR;
		while ( !( *(volatile unsigned char *)INT_FADE_FCTM_FP4_ADDR & 0x01))
		{
			//cIntFlag = *(volatile unsigned char *)INT_FADE_FCTM_FP4_ADDR;
		}
		*(volatile unsigned char *)INT_FADE_FCTM_FP4_ADDR |= 0x01;	/* Reset A/D interrupt factor flag*/
		x_add[times] = *(volatile unsigned short *)AD_ADD_ADDR;	// got Rx data
		times++;
		
	}					
	times = 0;	
	while (times<AD_DATA_NUM)
	{		
			
		// waiting when the voltage stable
		{ int i;
		for (i = 0;i< 100;i++)
			asm("nop");
		}
		
		// Sample Ry:BXH(P02)=1;BXL(P03)=0;BYH(P15)=0;BYL(P16)=1
		*(volatile unsigned char *)IO_P0D_ADDR &= 0xf7;	
		*(volatile unsigned char *)IO_P1D_ADDR &= 0xdf;		
		*(volatile unsigned char *)IO_P0D_ADDR |= 0x04;		
		*(volatile unsigned char *)IO_P1D_ADDR |= 0x40;		
		
		// waiting when the voltage stable
		
	
		*(volatile unsigned char *)AD_CS_ADDR = (AD_CE_0 | AD_CS_0);	/* AD0 for Ry sampling*/
		*(volatile unsigned char *)AD_OWE_ADDR |= AD_ADST_RUN;	// start run AD
		//cIntFlag = *(volatile unsigned char *)INT_FADE_FCTM_FP4_ADDR;
		while ( !(*(volatile unsigned char *)INT_FADE_FCTM_FP4_ADDR & 0x01))
		{
			//cIntFlag = *(volatile unsigned char *)INT_FADE_FCTM_FP4_ADDR;
		}
		*(volatile unsigned char *)INT_FADE_FCTM_FP4_ADDR |= 0x01;	/* Reset A/D interrupt factor flag*/
		y_add[times] = *(volatile unsigned short *)AD_ADD_ADDR;	// got Ry data
		times++;
	}
	
	x_avrg = get_avrg(x_add);
	y_avrg = get_avrg(y_add);

 	// set P15(BYH)=1,P02(BXH)=1,P16(BYL)=1,P03(BXL)=0
 	*(volatile unsigned char *)IO_P0D_ADDR &= 0xf7;	
 	*(volatile unsigned char *)IO_P0D_ADDR |= 0xf4;		
	*(volatile unsigned char *)IO_P1D_ADDR |= 0x60;			


}
/******************************************************************
  * FUNCTION: fnIHL_GetPenPoint
  *
  * PURPOSE:
  *		get the coordinate of touch point
  *
  * PARAMETERS
  *    Input:
  *    Output:
  *    InOut:
  *
  * Return value:
  *
  * Reentrant : No
 *****************************************************************/
void fnIHL_GetPenPoint(unsigned short *xposition, unsigned short *yposition)
{
	unsigned short num;
	
	get_adjust_point();
	
	//convert ad data to lcd coordinate value
	num=x_avrg/4;
	*yposition = x_tp_map[num];
	num=y_avrg/2;
	*xposition = y_tp_map[num];
}