cd_ad.h

Keil ,LPC932系列环境下开发的频率测量单片机程序,用定时器来计脉冲数从而得出频率.

#define U32 unsigned long
#define U8 unsigned char
#define U16 unsigned int

#define AVERAGECOUNT	10
#define ROUND	AVERAGECOUNT/2		//四舍五入

float RH;
volatile unsigned char TH1Buff;
volatile unsigned char TL1Buff;
volatile unsigned int Frequence;
volatile unsigned int count ;
volatile unsigned long systimer ;
unsigned char sys_th0 , sys_tl0 ;
sbit test_pin = P1^7;

void Uart_Printf(char *s);
void Uart_Printchar(char c);

extern bit PGM_USER(unsigned char page_hi , unsigned char page_lo );
extern unsigned char  FLASH_ReadByte(unsigned int addr);
extern bit  FLASH_WriteByte(unsigned int addr, unsigned char dat);
extern void delayms(unsigned int delay);
/////////////////////////////////////////////////////////////////////////////////////////////
//设备属性结构
typedef struct NTSD_ATTRIBUTES {		//Total Station Device
//U8 Size;			//本结构数据长度。如果以后扩展该结构能从此长度识别 13字节
U8 InterfaceProtocol;	//设备接口协议 uart(0) I2C(1) SPI(2) USB(3)
U8 VenderID;		//制造商ID 
U8 DeviceID;		//设备ID
U8 HardWareVersion;		//设备硬件版本
U32  DeviceVersion;		//设备软件版本号
U32  SerialNumber;		//产品出厂编号
//0x0d
} NTSDEVICE ;