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所有資料51hei提供下載:
C8051F同時(shí)實(shí)現(xiàn)AD和串口收發(fā)的程序.rar
(7.5 KB, 下載次數(shù): 39)
2017-8-31 10:13 上傳
點(diǎn)擊文件名下載附件
下載積分: 黑幣 -5
單片機(jī)源程序如下:
- //---------------------------------------------------------------------
- #include <C8051F020.h>
- #include "stdio.h"
- sfr16 TMR3RL = 0x92; //定時(shí)器3重裝載寄存器
- sfr16 TMR3 = 0x94; //定時(shí)器3計(jì)數(shù)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
- //----------------------------------------------------------------------
- //參數(shù)設(shè)置區(qū)
- //----------------------------------------------------------------------
- #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,修改請(qǐng)也修改PCONVAL
- #define PCONVAL 0x00 //PCON的值,=0x00時(shí)SMOD0=0; =0x80時(shí)SMOD0=1
- #define TXVAL (256-SYSCLK*(SMODVAL+1)/BAUDRATE/384) //定時(shí)器初值
- #define MAX_LEN 1//每次接收/發(fā)送字符串的長度
- #define SAMPLERATE0 5000
- #define NUM_SAMPLES 1
- #define TURE 1
- #define FALSE 0
- //---------------------------------------------------------------------
- //全局變量
- //---------------------------------------------------------------------
- sbit LED = P1^6; //LED '1'亮 '0'滅
- bit readFlag = 0; //讀標(biāo)志
- uchar readCounts = 0; //已經(jīng)讀取的字符個(gè)數(shù),與MAX_LEN比較
- uchar idATa trdATa[MAX_LEN]; //要接收/發(fā)送的字符串
- xdATa unsigned samples[NUM_SAMPLES];
- bit ADC0_DONE;
- //----------------------------------------------------------------------
- //子函數(shù)聲明
- //----------------------------------------------------------------------
- void SYSCLK_Init(void); //系統(tǒng)時(shí)鐘初始化
- void PORT_Init(void); //端口初始化
- void UART0_Init(void); //串口UART0初始化
- void Send_Char(uchar ch); //發(fā)送單個(gè)字符
- void Send_String(uchar * str, uint len); //發(fā)送一個(gè)字符串
- void UART0_ISR(); //串口中斷服務(wù)程序,接收字符
- void Timer3_Init(uint counts); //定時(shí)器3初始化
- void Timer3_ISR(void); //定時(shí)器3中斷服務(wù)程序
- void ADC0_Init (void);
- //----------------------------------------------------------------------
- //主函數(shù)
- //----------------------------------------------------------------------
- void main(void)
- {unsigned short i;
- floAT temp,k;
- WDTCN = 0xde; //禁止看門狗
- WDTCN = 0xad;
- P6&=0x02;
- here:
- i=0;
- SYSCLK_Init(); //時(shí)鐘初始化
- PORT_Init(); //端口初始化
- UART0_Init(); //串口初始化
- Timer3_Init(SYSCLK/12/10); //定時(shí)器初始化
- EA = 1; //開全局中斷
- 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) //已經(jīng)讀取
- {
- readFlag = 0; //清零
- Send_String(trdATa,MAX_LEN); //發(fā)送字符串
- i++;
- if(i==10000){goto here;}
- }
-
- }
- }}
- //----------------------------------------------------------------------
- //子函數(shù)具體實(shí)現(xiàn)
- //----------------------------------------------------------------------
- //系統(tǒng)時(shí)鐘初始化
- void SYSCLK_Init(void)
- {
- uint i;
- OSCXCN = 0x67; //采用外部晶振22.1184MHz,不分頻. 選型OSCXCN=0110,0111
- for(i=0;i<256;i++); //等待>1ms
- while(!(OSCXCN&0x80)); //查詢直到XTLVLD=1,晶振穩(wěn)定
- OSCICN = 0x88; //切換到外部振蕩器,允許時(shí)鐘失效監(jiān)測(cè)器. OSCICN=1000,1000
- }
- //端口初始化
- void PORT_Init(void)
- {
- XBR0 = 0x04; //允許UART0,RX,TX連到2個(gè)端口引腳. XBR0=0000,0100
- XBR1 = 0x00;
- XBR2 = 0x40; //交*開關(guān)使能
- P0MDOUT |= 0x03; //P0.0為推拉方式輸出,即TX0,RX0所在的端口 0000,0011
- P1MDOUT |=0x40; //P1.6為推拉方式輸出,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中斷開啟 ADC時(shí)候要屏蔽
- TR1 = 1; //啟動(dòng)定時(shí)器T1
- }
- //定時(shí)器初始化
- void Timer3_Init(uint counts)
- {
- TMR3CN = 0x00; //禁止定時(shí)器T3,清TF3,采用SYSCLK/12為時(shí)基
- TMR3RL = -counts; //初始化重裝載值
- TMR3 = 0xffff; //設(shè)置為立即重裝載
- EIE2 |= 0x01; //T3中斷開啟
- TMR3CN |= 0x04; //啟動(dòng)T3
- }
- //發(fā)送單個(gè)字符
- void Send_Char(uchar ch)
- {
- SBUF0 = ch; //送入緩沖區(qū)1
- while(TI0 == 0); //等待發(fā)送完畢
- TI0 = 0; //軟件清零
- }
- //發(fā)送字符串,調(diào)用Send_Char() len字符串長度
- void Send_String(uchar * str,uint len)
- {
- uint k = 0;
- do
- {
- Send_Char(*(str + k));
- k++;
- } while(k < len);
- }
- //定時(shí)器3中斷服務(wù)程序
- void Timer3_ISR(void) interrupt 14 using 0
- {
- TMR3CN &= ~(0x80); //清TF3
- LED = ~LED;
- }
- //UART0中斷服務(wù)程序. 接收字符
- void UART0_ISR(void) interrupt 4 using 1
- {
- uchar rxch;
- if(RI0) //中斷標(biāo)志 RI0=1 數(shù)據(jù)完整接收
- {
- RI0 = 0; //軟件清零
- rxch = SBUF0; //讀緩沖
- if(readCounts>=MAX_LEN)
- {
- readCounts = 0;
- readFlag = 1;
- }
- ……………………
- …………限于本文篇幅 余下代碼請(qǐng)從51黑下載附件…………
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