关于rt-thread互斥锁第二线程检测碰撞的问题，求解答？？

发布于 2019-06-21 15:11:19 浏览：1405 订阅该版

想写一个利用lcd的小游戏，可是在利用互斥锁的时候发现线程2并没有像我想的那样执行检测。现在的问题是虽然小球和障碍物重合到一起线程二也没有执行黑屏操作
开发板是正点原子的潘多拉stm32l4开发板。

代码如下：

#include <rtthread.h>
#include <rtdevice.h>
#include <board.h>
#include <drv_lcd.h>
#include <rttlogo.h>
//********************************************************************************************
#define THREAD_PRIORITY         8
#define THREAD_TIMESLICE        5
static rt_mutex_t dynamic_mutex = RT_NULL;
static rt_uint8_t number1,number2 = 0;

int x=120,y=230;//小球初始坐标
//障碍物全局变量
int x1=120;
int y1=120;

//**************************draw_man*****************************************************画小球的函数

void draw_Man(int x,int y)
{
    for (int i = 0; i < 10; i += 2)
    {
        lcd_draw_circle(x, y, i);				
    }	
}

//******************************* stone *******************************************画障碍物的函数
void stone(int x,int y)
{
			lcd_draw_circle(x,y,10);
}

//******************************man_move *************************************************用于小球移动的函数

void man_move()
{
		rt_pin_mode(PIN_KEY2, PIN_MODE_INPUT);
		rt_pin_mode(PIN_KEY1, PIN_MODE_INPUT);
		rt_pin_mode(PIN_KEY0, PIN_MODE_INPUT);
		rt_pin_mode(PIN_WK_UP, PIN_MODE_INPUT);
		while(1){
			if(rt_pin_read(PIN_KEY0) == PIN_LOW)
			{				
				if (x + 10 <= 230) {
						x+=10;
						lcd_clear(WHITE);
						draw_Man(x,y);
						stone(x1,y1);
				}
								
			}
			if(rt_pin_read(PIN_KEY2) == PIN_LOW)
			{
					if (x - 10 >= 10) {
						x-=10;
						lcd_clear(WHITE);
						draw_Man(x,y);\
						stone(x1,y1);
				}				
			}
			if(rt_pin_read(PIN_WK_UP) == PIN_HIGH)
			{
					if (y - 10 >= 10) {
						y-=10;
						lcd_clear(WHITE);
						draw_Man(x,y);
						stone(x1,y1);
				}					
			}
			if(rt_pin_read(PIN_KEY1) == PIN_LOW)
			{
					if (y + 10 <= 230) {
						y+=10;
						lcd_clear(WHITE);
						draw_Man(x,y);
						stone(x1,y1);
				}				
			}
		}

}
//********************************************************************线程一用来执行控制小球移动的函数，线程二用来检测小球坐标和障碍物的坐标值是否相等。

ALIGN(RT_ALIGN_SIZE)
static char thread1_stack[1024];
static struct rt_thread thread1;
static void rt_thread_entry1(void *parameter)
{
      while(1)
      {
          rt_mutex_take(dynamic_mutex, RT_WAITING_FOREVER);          
          man_move();
          rt_thread_mdelay(10); 
          rt_mutex_release(dynamic_mutex);
       }	    
}

ALIGN(RT_ALIGN_SIZE)
static char thread2_stack[1024];
static struct rt_thread thread2;
static void rt_thread_entry2(void *parameter)
{     
      while(1)
      {
          rt_mutex_take(dynamic_mutex, RT_WAITING_FOREVER);
          if(x == x1&&y==y1)
          {
							lcd_display_off();
							rt_mutex_release(dynamic_mutex);
          }    
      }	  
}
//********************************************************************************

int mutex_sample(void)
{

dynamic_mutex = rt_mutex_create("dmutex", RT_IPC_FLAG_FIFO);
    if (dynamic_mutex == RT_NULL)
    {
        rt_kprintf("create dynamic mutex failed.<br>");
        return -1;
    }

rt_thread_init(&thread1,
                   "thread1",
                   rt_thread_entry1,
                   RT_NULL,
                   &thread1_stack[0],
                   sizeof(thread1_stack), 
                   THREAD_PRIORITY, THREAD_TIMESLICE);
    rt_thread_startup(&thread1);

rt_thread_init(&thread2,
                   "thread2",
                   rt_thread_entry2,
                   RT_NULL,
                   &thread2_stack[0],
                   sizeof(thread2_stack), 
                   THREAD_PRIORITY-1, THREAD_TIMESLICE);
    rt_thread_startup(&thread2);
    return 0;
}

//***************************************************************************************

int main(void)
{    
		lcd_set_color(WHITE,BLACK);
		lcd_show_string(40,48,24,"Falling Stone");
		lcd_show_string(20,120,16,"\"press any key begin game\"");
		lcd_show_string(85,220,16,"By: Good Good Study");
		mutex_sample();	
    return 0;		
}