static int xpt2046_read_values(struct XPT2046_TS_EVENT *ts_dev)
{
uint16 *ptmpdata;
int ret = 0,cnt = 0;
bool accept = false;
int tmp_p = 0;
ptmpdata = kzalloc(sizeof(uint16)*2, GFP_KERNEL);
do {
ptmpdata[0] = gLastZvalue[0];
ptmpdata[1] = gLastZvalue[1];
accept = xpt2046_pressure_filter(ts_dev);
//accept = true;
if(accept)
{
ptmpdata[0]= PT2046_read_op(ts_dev,READ_X);
udelay(ADC_DELAYS);
ptmpdata[1]= PT2046_read_op(ts_dev,READ_Y);
udelay(ADC_DELAYS);
gLastZvalue[0] = ptmpdata[0];
gLastZvalue[1] = ptmpdata[1];
ret++;
}
//printk("pressure = %d, x = %d y = %d accept = %d \n",gDebugData[0], ptmpdata[0], ptmpdata[1], accept);
cnt++;
} while(cnt<2||0!=TouchFilter(&ptmpdata[0],&ptmpdata[1],ts_dev->pendown));
tmp_p = tmp_save_ad_point_num % SAVEPOINTMAXNUM;
if(ret)
{
ts_dev->x = gLastZvalue[0];
ts_dev->y = gLastZvalue[1];
if(cal_status_android < 5 && cal_status_android >= 0)
{
tmp_save_ad_point_x[tmp_p] = ts_dev->x;
tmp_save_ad_point_y[tmp_p] = ts_dev->y;
tmp_save_ad_point_num ++;
}
}
else
{
ts_dev->x = 0;
ts_dev->y = 4095;
}
//printk("xpt2046_read_values() ts_dev->x = %d, ts_dev->y = %d cal_status_android = %d tmp_save_ad_point_num = %d tmp_p = %d \n",
// ts_dev->x, ts_dev->y, cal_status_android, tmp_save_ad_point_num, tmp_p);
gDebugData[1] = ts_dev->x;
gDebugData[2] = ts_dev->y;
rk28printk("pressure = %d adx = %d ady = %d\n",gDebugData[0],gDebugData[1],gDebugData[2]);
rk28printk("pressure = %d\n",gDebugData[0]);
kfree(ptmpdata);
return ret;
}
/**************************************************************
** 函数名:ManageTouch
** 功能:触摸管理
** 注意事项:研究中...笔中断有效时开始消抖(非阻塞延迟),->进入有效读TOUCH,每个循环读一次并检测笔中断,够10个循环则滤波出值.
***************************************************************/
void ManageTouch(void)
{
Touch_Cnt_Time++;
/**************************************************************
PEN为无效效
***************************************************************/
if(GET_PEN_INT)
{
/**************************************************************
考虑这里也要使用消抖-释放消抖
***************************************************************/
if(!(Touch_Flag&TOUCH_F_RELEASE))
{
//如果之前有HOLD标志,则代表释放
if(Touch_Flag&TOUCH_F_HOLD)
{
Touch_Flag=TOUCH_F_NULL;
Touch_Flag|=TOUCH_F_RELEASE|TOUCH_F_HOLD;
T_Release_X=T_Hold_X;
T_Release_Y=T_Hold_Y;
}
//否则之前只有PUSH标志,也代表释放
else if(Touch_Flag&TOUCH_F_PUSH)
{
Touch_Flag=TOUCH_F_NULL;
Touch_Flag|=TOUCH_F_RELEASE|TOUCH_F_PUSH;
T_Release_X=T_Push_X;
T_Release_Y=T_Push_Y;
}
}
return;
}
/**************************************************************
PEN为有效
***************************************************************/
//如果之前有释放状态,则从新开始判断触摸
if(Touch_Flag&TOUCH_F_RELEASE)
{
goto new_touch;
}
//-1.TOUCH_F_WAIT_HOLD标志,代表要开始计算等待保持时间
if(Touch_Flag&TOUCH_F_WAIT_HOLD)
{
if(Touch_Cnt_Time>=TOUCH_CNT_WAIT_HOLD_TIME)
{
Touch_Flag|=TOUCH_F_HOLD;
Touch_Flag&=~TOUCH_F_WAIT_HOLD;
T_Hold_X=T_Release_X;
T_Hold_Y=T_Release_Y;
}
}
//-1.HOLD并且非滤波标志
else if((Touch_Flag&TOUCH_F_HOLD)&&(!(Touch_Flag&TOUCH_F_FILTERING)))
{
Touch_Flag|=TOUCH_F_FILTERING; //则开始滤波
Filter_No=0;
}
//-3.PUSH标志并且非滤波标志*_*
else if((Touch_Flag&TOUCH_F_PUSH)&&(!(Touch_Flag&TOUCH_F_FILTERING)))
{
if(Touch_Cnt_Time>=TOUCH_CNT_HOLD_TIME) //则开始计算BPK,时间到则又进入滤波
{
Touch_Flag|=TOUCH_F_FILTERING;
Filter_No=0;
}
}
//-3.FLITERING-当没PUSH到PUSH的时候会进入这里一次,HOLD则连续进入
else if(Touch_Flag&TOUCH_F_FILTERING)
{
GetOneCoordinate(Filter_No);
if((++Filter_No)==MAX_TOUCH_FILTER_NO)
{
if(!(Touch_Flag&TOUCH_F_PUSH)) //之前没有PUSH,则这个是属于PUSH的滤波
{
TouchFilter(&T_Push_X,&T_Push_Y);
Touch_Flag=TOUCH_F_PUSH;
Touch_Cnt_Time=0;
}
else //属于HOLD的滤波
{
TouchFilter(&T_Release_X,&T_Release_Y);//放到Release纯粹为了节省临时变量
Touch_Flag&=~TOUCH_F_FILTERING;
Touch_Flag|=TOUCH_F_WAIT_HOLD;
Touch_Cnt_Time=0;
}
}
}
//-4.BCK-消抖时间到,则转入滤波
else if(Touch_Flag&TOUCH_F_BCK_TIME)
{
if(Touch_Cnt_Time>=TOUCH_CNT_FLITER_TIME)
{
Touch_Flag=TOUCH_F_FILTERING;
Filter_No=0;
}
}
//-5.PUCH_NULL,置消抖标志
else
{
new_touch:
Touch_Flag=TOUCH_F_BCK_TIME;
Touch_Cnt_Time=0;
}
}
