led.c

来自「瑞萨(Renesas)M16C系列芯片的函数库」· C语言 代码 · 共 36 行

#include "LED.h"	// LED utility header
#include "sfr62p.h"	// SFR definition of M16C/62P

/*""FUNC COMMENT""*************************************************************
* ID         		: ---
* Function name     : void InitLED(void)
* Function     		: initialize light-emitted diode
* Paramenter   		: none
* Return 	 		: none
* Function used		: none
* Notice	   		: none
* History    		: ---
*""FUNC COMMENT END""*********************************************************/
void InitLED(void)
{
	pd5 = pd5 & 0xE1; // P5_1 to P5_5 is used as input
	pd2 = 0xFF;	//P2 is used as output
	p2 = 0xFF;	//all LED not light
}

/*""FUNC COMMENT""*************************************************************
* ID         		: ---
* Function name     : void SetLED(unsigned char)
* Function     		: light diode with parameter
* Paramenter   		: none
* Return 	 		: none
* Function used		: none
* Notice	   		: none
* History    		: ---
*""FUNC COMMENT END""*********************************************************/
void SetLED(unsigned char value)
{
	value = ~value;	// because the circuit, the parameter should be reversed
	p2 = value;		// set the result to Port P2
}