C8051F同时实现AD和串口收发的程序

ID:229453 · 发表于 2017-8-31 10:13

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C8051F同时实现AD和串口收发的程序.rar (7.5 KB, 下载次数: 39)

单片机源程序如下:

//---------------------------------------------------------------------
#include <C8051F020.h>
#include "stdio.h"
sfr16 TMR3RL = 0x92; //定时器3重装载寄存器
sfr16 TMR3 = 0x94; //定时器3计数器
sfr16 DP =0x82;
sfr16 ADC0 =0xbe;
sfr16 ADC0GT =0xc4;
sfr16 ADCOLT =0xc6;
sfr16 RCAP2 =0xca;
sfr16 T2 =0xcc;
sfr16 RCAP4 =0xe4;
sfr16 T4 =0xf4;
sfr16 DAC0 =0xd2;
sfr16 DAC1 =0xd5;
#define uchar unsigned char
#define uint unsigned int
//----------------------------------------------------------------------
//参数设置区
//----------------------------------------------------------------------
#define BAUDRATE 9600 //波特率bps
#define SYSCLK 11059200 //外部晶振,修改也要修改OSCXCN
#define SMODVAL 0 //SMOD的值,修改请也修改PCONVAL
#define PCONVAL 0x00 //PCON的值,=0x00时SMOD0=0; =0x80时SMOD0=1
#define TXVAL (256-SYSCLK*(SMODVAL+1)/BAUDRATE/384) //定时器初值
#define MAX_LEN 1//每次接收/发送字符串的长度
#define SAMPLERATE0 5000
#define NUM_SAMPLES 1
#define TURE 1
#define FALSE 0
//---------------------------------------------------------------------
//全局变量
//---------------------------------------------------------------------
sbit LED = P1^6; //LED '1'亮 '0'灭
bit readFlag = 0; //读标志
uchar readCounts = 0; //已经读取的字符个数,与MAX_LEN比较
uchar idATa trdATa[MAX_LEN]; //要接收/发送的字符串
xdATa unsigned samples[NUM_SAMPLES];
bit ADC0_DONE;
//----------------------------------------------------------------------
//子函数声明
//----------------------------------------------------------------------
void SYSCLK_Init(void); //系统时钟初始化
void PORT_Init(void); //端口初始化
void UART0_Init(void); //串口UART0初始化
void Send_Char(uchar ch); //发送单个字符
void Send_String(uchar * str, uint len); //发送一个字符串
void UART0_ISR(); //串口中断服务程序,接收字符
void Timer3_Init(uint counts); //定时器3初始化
void Timer3_ISR(void); //定时器3中断服务程序
void ADC0_Init (void);
//----------------------------------------------------------------------
//主函数
//----------------------------------------------------------------------
void main(void)
{unsigned short i;
floAT temp,k;
WDTCN = 0xde; //禁止看门狗
WDTCN = 0xad;
P6&=0x02;
here:
i=0;
SYSCLK_Init(); //时钟初始化
PORT_Init(); //端口初始化
UART0_Init(); //串口初始化
Timer3_Init(SYSCLK/12/10); //定时器初始化
EA = 1; //开全局中断
ADC0_Init();
AD0INT=0;
AD0BUSY=1;
while(AD0INT==0);
temp=ADC0;
k=(temp*2.4)/4096;
printf("\n");
printf("voltage%f",k);
printf("\n");
i=0;
while(1)
{
{if(readFlag) //已经读取
{
readFlag = 0; //清零
Send_String(trdATa,MAX_LEN); //发送字符串
i++;
if(i==10000){goto here;}
}
}
}}
//----------------------------------------------------------------------
//子函数具体实现
//----------------------------------------------------------------------
//系统时钟初始化
void SYSCLK_Init(void)
{
uint i;
OSCXCN = 0x67; //采用外部晶振22.1184MHz,不分频. 选型OSCXCN=0110,0111
for(i=0;i<256;i++); //等待>1ms
while(!(OSCXCN&0x80)); //查询直到XTLVLD=1,晶振稳定
OSCICN = 0x88; //切换到外部振荡器,允许时钟失效监测器. OSCICN=1000,1000
}
//端口初始化
void PORT_Init(void)
{
XBR0 = 0x04; //允许UART0,RX,TX连到2个端口引脚. XBR0=0000,0100
XBR1 = 0x00;
XBR2 = 0x40; //交*开关使能
P0MDOUT |= 0x03; //P0.0为推拉方式输出,即TX0,RX0所在的端口 0000,0011
P1MDOUT |=0x40; //P1.6为推拉方式输出,即LED所在的端口 0100,0000
}
//串口初始化
void UART0_Init(void)
{
SCON0=0x50;
TMOD=0x20;
TH1=-(SYSCLK/BAUDRATE/16);
TR1=1;
CKCON|=0x10;
PCON|=0x80;
TI0=1;
TR0 = 1;
ES0 =1; //UART0中断开启 ADC时候要屏蔽
TR1 = 1; //启动定时器T1
}
//定时器初始化
void Timer3_Init(uint counts)
{
TMR3CN = 0x00; //禁止定时器T3,清TF3,采用SYSCLK/12为时基
TMR3RL = -counts; //初始化重装载值
TMR3 = 0xffff; //设置为立即重装载
EIE2 |= 0x01; //T3中断开启
TMR3CN |= 0x04; //启动T3
}
//发送单个字符
void Send_Char(uchar ch)
{
SBUF0 = ch; //送入缓冲区1
while(TI0 == 0); //等待发送完毕
TI0 = 0; //软件清零
}
//发送字符串,调用Send_Char() len字符串长度
void Send_String(uchar * str,uint len)
{
uint k = 0;
do
{
Send_Char(*(str + k));
k++;
} while(k < len);
}
//定时器3中断服务程序
void Timer3_ISR(void) interrupt 14 using 0
{
TMR3CN &= ~(0x80); //清TF3
LED = ~LED;
}
//UART0中断服务程序. 接收字符
void UART0_ISR(void) interrupt 4 using 1
{
uchar rxch;
if(RI0) //中断标志 RI0=1 数据完整接收
{
RI0 = 0; //软件清零
rxch = SBUF0; //读缓冲
if(readCounts>=MAX_LEN)
{
readCounts = 0;
readFlag = 1;
}
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ID:467431 · 发表于 2021-3-6 17:16

ES0 =1; //UART0中断开启 ADC时候要屏蔽楼主，ADC这个中断不能与串口中断同时使用吗？

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