九齐单片机 NY8B062D 之GPIO引脚的使用

柔情只为你懂 2023-01-10 11:55 129阅读 0赞

这个是资料整理 方便我在开发的时候 做配置使用 不需要每次都去看datasheet，

IOSTA =   C_PA2_Input | C_PA3_Input | C_PA4_Input | C_PA7_Input ;
     IOSTB =   C_PB5_Input |  C_PB3_Input;  
     APHCON = (unsigned char)~( C_PA6_PHB | C_PA5_PHB | C_PA7_PHB);//上拉
     BPHCON = (unsigned char)~( C_PB5_PHB | C_PB3_PHB );	//上拉
     BODCON = C_PB5_OD | C_PB4_OD;		// Enable open-drain of PB5.PB4, others disable
    IOSTB = 0xF8;//0 为定义输出 1为配置为输出// PB0.PB1.PB2: output mode, others: input mode
    
     PORTAbits.PA0 ^=1;	  //反转

1：注意: 上拉和下拉 是低电平有效 所以要取反 使用(unsigned char)~的符号。  
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2：配置IOSTA的时候 一定要把要输入的配置好 要不然就是默认为输出口，（因为对应的位为1的时候 才是输入）  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl8zOTMyODQwNg_size_16_color_FFFFFF_t_70 1]

// IOSTA = 每次设置的时候 都要一次把引脚设置好
     IOSTA =   C_PA7_Input   | C_PA5_Oput 
     // While PA7 Inputs High/Low, then PA5 Outputs High/Low
    		if(PORTAbits.PA7) //判断A7引脚是不是高
    			PORTAbits.PA5 = 1;
    		else
    			PORTAbits.PA5 = 0;
    			
       if ( !(PORTAbits.PA6) )    //判断A67引脚是不是低

直接读取引脚的值；  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl8zOTMyODQwNg_size_16_color_FFFFFF_t_70 2]  
读取引脚的电平值 使用扫描的方法

//--------------------------------------------------------------------------
    // check key status
    //--------------------------------------------------------------------------
    char KeyScan(void)	
    {  
    	char KeyStatus;
    	
    	KeyStatus = ~PORTA;
    	
      	return(KeyStatus);
    } 
    
     KeyStatus = KeyScan() & 0x40;	         // PA6
    	        if (KeyStatus != 0)				         // check if a key is pressed // PortA.6 （LED1）is pressed

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