C8051F同时实现AD和串口收发的程序

1、C8051F同时实现AD和串口收发的程序/-#include #include stdio.hsfr16 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 c

2、har#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#defin

3、e SAMPLERATE0 5000#define NUM_SAMPLES 1#define TURE 1#define FALSE 0/-/全局变量/-sbit LED = P16; /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 trdATaMAX_LEN; /要接收/发送的字符串xdATa unsigned samplesNUM_SAMPLES;bit ADC0_DONE;/-/子函数声明/-void SYSCLK_Init(void); /系统时钟初始化void

4、 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 s

5、hort 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

6、); 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=0110,0111for(i=0;i1mswhile(!(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

7、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=0000,0100XBR1 = 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 0000,0011P1MDOUT |=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/BAU

8、DRATE/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

9、(uchar ch)SBUF0 = ch; /送入缓冲区1while(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 =MAX_LEN) readCounts = 0;readFlag = 1;trdATareadCounts = rxch; /存入数组,供发送readCounts+; /ADC0_Init/配置ADC0使用定时器3溢出作为转换启动信号，转换信号结束时候产生中断，使用左对齐输出方式/允许ADC0，但保持ADC0转换结束中断为禁止状态void ADC0_Init(void) ADC0CN=0x04; /定时器 3 溢出启动 ADC0 转换 REF0CN=0x07; /内部偏压发生器工作，内部电压基准缓冲器工作。内部电压基准提供从 VR