Function rtgui_touch_calculate

bsp/loongson/ls1cdev/drivers/touch.c:213–310

static void rtgui_touch_calculate(void)
{
    if (touch != RT_NULL)
    {
        /* read touch */
        {
            rt_uint8_t i, j, k, min;
            rt_uint16_t temp;
            rt_uint16_t tmpxy[2][SAMP_CNT];
            rt_uint8_t send_buffer[1];
            rt_uint8_t recv_buffer[2];
            for(i=0; i<SAMP_CNT; i++)
            {
                send_buffer[0] = TOUCH_MSR_X;
          touch_send_then_recv(touch->spi_device, send_buffer, 1, recv_buffer, 2);
                rt_kprintf("touch x: %d ",(recv_buffer[0]*256|recv_buffer[1])>>4);
#if defined(_ILI_HORIZONTAL_DIRECTION_)
                tmpxy[1][i]  = (recv_buffer[0]<<8)|recv_buffer[1] ;
                tmpxy[1][i] >>= 4;
#else
                tmpxy[0][i]  = (recv_buffer[0]<<8)|recv_buffer[1] ;
                tmpxy[0][i] >>=4;

#endif
                send_buffer[0] = TOUCH_MSR_Y;
                touch_send_then_recv(touch->spi_device, send_buffer, 1, recv_buffer, 2);
          rt_kprintf("touch y: %d \n",(recv_buffer[0]*256|recv_buffer[1])>>4);

#if defined(_ILI_HORIZONTAL_DIRECTION_)
                tmpxy[0][i]  = (recv_buffer[0]<<8)|recv_buffer[1] ;
                tmpxy[0][i] >>= 4;
#else
                tmpxy[1][i]  = (recv_buffer[0]<<8)|recv_buffer[1] ;
                tmpxy[1][i] >>= 4;
#endif
            }
            /*再次打开触摸中断*/
            send_buffer[0] = 1 << 7;
          touch_send_then_recv(touch->spi_device, send_buffer, 1, recv_buffer, 2);
                touch_send_then_recv(touch->spi_device, send_buffer, 1, recv_buffer, 2);
            /* calculate average */
            {
                rt_uint32_t total_x = 0;
                rt_uint32_t total_y = 0;
                for(k=0; k<2; k++)
                {
                    // sorting the ADC value
                    for(i=0; i<SAMP_CNT-1; i++)
                    {
                        min=i;
                        for (j=i+1; j<SAMP_CNT; j++)
                        {
                            if (tmpxy[k][min] > tmpxy[k][j])
                                min=j;
                        }
                        temp = tmpxy[k][i];
                        tmpxy[k][i] = tmpxy[k][min];
                        tmpxy[k][min] = temp;