#include?“compiler_defs.h“
#include?“C8051F520A_defs.h“???????????//?SFR?declarations
#include?
/*MCU:c8051f530a:RAM?256;ROM:8K;12位AD、DA
????????????報文（自激發送?>1K/s）：0xaa（1字節）+數據位（3字節）+采集數據量（2字節）0xbb（1字節）+xor*/

#define?uchar?unsigned?char
#define?uint??unsigned?int
#define?ulong?unsigned?long

#define??SYSCLK???????12250000????//時鐘頻率12.25M
#define??BAUDRATE?????115200??????//?波特率

#define??double_al????

#define?ERROR_DATA??0
#define??T_count?7
sbit?CPU_CLK=P0^1;
sbit?SCLK=P1^6;
sbit?DOUT=P1^5;

sbit?AD_OK=P0^0;
sbit?MAX_485=P0^3;

ulong?AVRAGE_L_AD_24bits;
ulong?L_AD_24bits;
uchar?send_count;?????//?發送數據計數
bit???send_OK=0;?????//發送完標志位
int???dat_count;??????//連續收到同一個數的次數
char??avrge_dat_count;
unsigned?int??ad_data_count;

uchar?idata?C_out_buff[T_count+1]_at_?0xd5;

long?avrg_buff[8];
long?avrg_buff1[9];
//****************************************function?define******************************************//
void?PCA_Init（void）;????????//PCA看門狗
void?Oscillator_Init?（void）;//內部晶振初始化
void?Port_Init?（void）;??????//?端口初始化
void?UART0_Init?（void）;?????//??串口初始化
void?_nop（uint?count）;??????//???
//void?send_datas（void）;??????//??數據發送????為提高發送速度由中斷發送代替2012.5.14
unsigned?long?readADS1252（void）;//AD讀取
//*************************************************530初始化****************************************************//
void?PCA_Init（void）
{
???PCA0CN?=???0x40;????????????????????//?PCA?counter?enable
???PCA0MD?&=?~0x40?;???????????????????//?Watchdog?timer?disabled
???PCA0MD?&=??0xF1;????????????????????//?Timebase?selected?-?System?clock?/?12
???PCA0CPL2?=?0xFF;????????????????????//?Offset?value
}
void?Oscillator_Init?（void）
{
???OSCICN?=?0xc6;??????????????????????//?Set?the?internal?oscillator?to12m	
???while（!（OSCICN&0x10））;								???
}
void?Port_Init?（void）
{?????????????
????P0SKIP????=?0x01;????????????????//跳過VREF
????P0SKIP???|=?0x30;????????????????//跳過TX;RX
	REF0CN????=0x13;?????????????????//vref2.2v
	P0MDOUT?|=?0x02;??
????XBR0??????=?0x01;????????????????//使能UART0
????XBR1??????=?0x40;?????????????????//交叉譯碼開關使能?
}
void?UART0_Init?（void）
{
???SCON0?=?0x10;???????????????????????//?SCON0:?8-bit?variable?bit?rate
???????????????????????????????????????//????????level?of?STOP?bit?is?ignored
???????????????????????????????????????//????????RX?enabled
???????????????????????????????????????//????????ninth?bits?are?zeros
???????????????????????????????????????//????????clear?RI0?and?TI0?bits
???if?（SYSCLK/BAUDRATE/2/256?????{
??????TH1?=?-（SYSCLK/BAUDRATE/2）;
??????CKCON?&=?~0x0B;??????????????????//?T1M?=?1;?SCA1:0?=?xx
??????CKCON?|=??0x08;
????}?
???else?if?（SYSCLK/BAUDRATE/2/256?????{
??????TH1?=?-（SYSCLK/BAUDRATE/2/4）;
??????CKCON?&=?~0x0B;??????????????????//?T1M?=?0;?SCA1:0?=?01
??????CKCON?|=??0x01;
????}
????else?if?（SYSCLK/BAUDRATE/2/256????{
??????TH1?=?-（SYSCLK/BAUDRATE/2/12）;
??????CKCON?&=?~0x0B;??????????????????//?T1M?=?0;?SCA1:0