pwm.c

来自「PWM test for LEDs for LPC2114」· C语言 代码 · 共 29 行

	   /************************************************************************
 ** Program Name : PWMDAC	                                           **
 ** Compiler     : Keil                                				   **
 ** Board        : MiniARM                                       	   **
 ** Firm         : UC Micro Systems                                    **
 ** Website      : www.ucmicrosys.com                                  **
 **                                                                    **
 ** Description  : This program changes the value of DAC when pressing **
				   the key1. See the O/P on CRO by connecting the probe**
				   on test point PWM/PWMDAC							   **
 ***********************************************************************/
				 
				 

#include  "lpc21xx.h"

typedef unsigned char  uint8;                
typedef signed   char  int8;                   
typedef unsigned short uint16;                  
typedef signed   short int16;                   
typedef unsigned int   uint32;                  
typedef signed   int   int32;                  
typedef float          fp32;                    
typedef double         fp64;                    


#define Fosc            11059200                    //10MHz~25MH
#define Fcclk           (Fosc * 4)                  //Fosc(1~32)<=60MHZ
#define Fcco            (Fcclk * 4)                 //CCO Fcclk 2