RealTouch的触摸驱动

发布于 2013-05-10 12:19:28 浏览：2420 订阅该版

源文件touch.c
 ``` 
            for(i=0; i<SAMP_CNT; i++)
            {
                send_buffer[0] = TOUCH_MSR_X;
                rt_spi_send_then_recv(touch->spi_device,
                                      send_buffer,
                                      1,
                                      recv_buffer,
                                      2);
                tmpxy[0]* = (recv_buffer[0] & 0x7F) << 4;
                tmpxy[1]* |= (recv_buffer[1] >> 4) & 0x0F;

send_buffer[0] = TOUCH_MSR_Y;
                rt_spi_send_then_recv(touch->spi_device,
                                      send_buffer,
                                      1,
                                      recv_buffer,
                                      2);
                tmpxy[1]* = (recv_buffer[0] & 0x7F) << 4;
                tmpxy[1]* |= (recv_buffer[1] >> 4) & 0x0F;
            }```

其中``` 
tmpxy[0]* = (recv_buffer[0] & 0x7F) << 4;
tmpxy[1]* |= (recv_buffer[1] >> 4) & 0x0F;```
第二行是否应该是tmpxy[0]*呀？
可能因为影响的是最低有效位，问题不是很明显？