1. 怎样编写单片机的串口通信的程序
GCC只是一个编译器，和别的编译器一样。 串口通讯程序一般都是这样一个流程（AVR单片机正常工作的情况下）： 1 配置时钟，包括使能时钟，配置串口波特率。 2 其他配置，包括校验设置，使能串口等。 3 收发数据。主要过程为查询串口标志位，然后根据串口标志位去判断是否完成了收发数据。 按照这三个步骤去写程序，应该很快就能完成一个通讯程序。
2. 51单片机 串口程序
void
main()
{
scon
=
0x50;
tmod
=
0x20;
//设置定时器1为工作方式2
th1
=
0xf4;
tl1
=
0xf4;
tr1
=
1;
ea
=
1;
es
=
1;
while(1)
{
if(flag)
{
flag
=
0;
//不关闭串口中断，要让它继续接收
num1++;
//超过255，自动就是0
sbuf
=
num1;
while(!ti);
ti
=
0;
sbuf
=
a;
while(!ti);
ti
=
0;
}
}
}
void
ser()
interrupt
4
{
if
(ri)
{
ri
=
0;
a
=
sbuf;
flag
=
1;
}
}
3. 怎样编写单片机的串口通信的程序，一般的步骤是怎么样
编写串口通讯程序步骤为：
1、设置波特率
2、设置串口工作方式
3、收发数据。
比如：
main()
{
unsignedchardat;
TMOD=0x20;
TH1=0xfd;
TL1=0xfd;
TR1=1;
SCON=0x50;
while(1)
{
while(RI==0);
RI=0;
dat=SBUF;
SBUF=~dat;
while(TI==0)
TI=0;
}
}
4. 单片机串口通信程序
串口部分没有对，你好好看看串行口控制器SCON里面RI和TI的用法。TI=1不是启动发送，而是表示发送完毕。一般来说，发送一个数据，可以这样写：
voidSend_Char(charp)
{
SBUF=p;
while(!TI);
TI=0;
}
发送一串数据，假设是p[]，那么程序代码可以这样写：
voidSend_Str(char*p)
{
chari=0;
while(p[i]!=' ')
{
SBUF=p[i];
while(!TI);
TI=0;
i++;
}
}
5. STC单片机串口程序
//注意,如您使用的MCU没有那个功能,就不要操作相应的寄存器
//注意,如您使用的MCU没有那那么大的扩展SRAM,就不要操作超过范围的SRAM
#include<reg51.h>
#include<intrins.h>
sfr S2CON = 0x9A;
//S2SM0,S2SM1,S2SM2,S2REN,S2TB8,SRB8,S2TI,S2RI
sfr IE2 = 0xAF;
//X,X,X,X,X,X,ESPI,ES2
sfr S2BUF = 0x9B;
sfr AUXR = 0x8e;
sfr BRT = 0x9c;
sfr IAP_CONTR = 0xC7;
sfr CCON = 0xD8;
sfr CMOD = 0xD9;
sfr CL = 0xE9;
sfr CH = 0xF9;
sfr CCAP0L = 0xEA;
sfr CCAP0H = 0xFA;
sfr CCAPM0 = 0xDA;
sfr CCAPM1 = 0xDB;
sbit CR = 0xDE;
sbit MCU_Start_Led = P1^7;
sbit S2_Interrupt_Receive_Led = P1^4;
//unsigned char self_command_array[4] = {0x22,0x33,0x44,0x55};
#define Self_Define_ISP_Download_Command 0x22
#define RELOAD_COUNT 0xfb //18.432MHz,12T,SMOD=0,9600bps
void serial_port_one_initial();
void send_UART_one(unsigned char);
void UART_one_Interrupt_Receive(void);
void serial_port_two_initial();
void send_UART_two(unsigned char);
void UART_two_Interrupt_Receive(void);
void soft_reset_to_ISP_Monitor(void);
void delay(void);
void display_MCU_Start_Led(void);
void send_PWM(void);
void main(void)
{
unsigned int array_point = 0;
unsigned char xdata Test_array_one[512] =
{
0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f,
0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27,
0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f,
0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37,
0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f,
0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47,
0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f,
0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57,
0x58, 0x59, 0x5a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f,
0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67,
0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f,
0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77,
0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f,
0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87,
0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f,
0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97,
0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f,
0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7,
0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf,
0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7,
0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf,
0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7,
0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf,
0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7,
0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0xdd, 0xde, 0xdf,
0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7,
0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef,
0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7,
0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff,
0xff, 0xfe, 0xfd, 0xfc, 0xfb, 0xfa, 0xf9, 0xf8,
0xf7, 0xf6, 0xf5, 0xf4, 0xf3, 0xf2, 0xf1, 0xf0,
0xef, 0xee, 0xed, 0xec, 0xeb, 0xea, 0xe9, 0xe8,
0xe7, 0xe6, 0xe5, 0xe4, 0xe3, 0xe2, 0xe1, 0xe0,
0xdf, 0xde, 0xdd, 0xdc, 0xdb, 0xda, 0xd9, 0xd8,
0xd7, 0xd6, 0xd5, 0xd4, 0xd3, 0xd2, 0xd1, 0xd0,
0xcf, 0xce, 0xcd, 0xcc, 0xcb, 0xca, 0xc9, 0xc8,
0xc7, 0xc6, 0xc5, 0xc4, 0xc3, 0xc2, 0xc1, 0xc0,
0xbf, 0xbe, 0xbd, 0xbc, 0xbb, 0xba, 0xb9, 0xb8,
0xb7, 0xb6, 0xb5, 0xb4, 0xb3, 0xb2, 0xb1, 0xb0,
0xaf, 0xae, 0xad, 0xac, 0xab, 0xaa, 0xa9, 0xa8,
0xa7, 0xa6, 0xa5, 0xa4, 0xa3, 0xa2, 0xa1, 0xa0,
0x9f, 0x9e, 0x9d, 0x9c, 0x9b, 0x9a, 0x99, 0x98,
0x97, 0x96, 0x95, 0x94, 0x93, 0x92, 0x91, 0x90,
0x8f, 0x8e, 0x8d, 0x8c, 0x8b, 0x8a, 0x89, 0x88,
0x87, 0x86, 0x85, 0x84, 0x83, 0x82, 0x81, 0x80,
0x7f, 0x7e, 0x7d, 0x7c, 0x7b, 0x7a, 0x79, 0x78,
0x77, 0x76, 0x75, 0x74, 0x73, 0x72, 0x71, 0x70,
0x6f, 0x6e, 0x6d, 0x6c, 0x6b, 0x6a, 0x69, 0x68,
0x67, 0x66, 0x65, 0x64, 0x63, 0x62, 0x61, 0x60,
0x5f, 0x5e, 0x5d, 0x5c, 0x5b, 0x5a, 0x59, 0x58,
0x57, 0x56, 0x55, 0x54, 0x53, 0x52, 0x51, 0x50,
0x4f, 0x4e, 0x4d, 0x4c, 0x4b, 0x4a, 0x49, 0x48,
0x47, 0x46, 0x45, 0x44, 0x43, 0x42, 0x41, 0x40,
0x3f, 0x3e, 0x3d, 0x3c, 0x3b, 0x3a, 0x39, 0x38,
0x37, 0x36, 0x35, 0x34, 0x33, 0x32, 0x31, 0x30,
0x2f, 0x2e, 0x2d, 0x2c, 0x2b, 0x2a, 0x29, 0x28,
0x27, 0x26, 0x25, 0x24, 0x23, 0x22, 0x21, 0x20,
0x1f, 0x1e, 0x1d, 0x1c, 0x1b, 0x1a, 0x19, 0x18,
0x17, 0x16, 0x15, 0x14, 0x13, 0x12, 0x11, 0x10,
0x0f, 0x0e, 0x0d, 0x0c, 0x0b, 0x0a, 0x09, 0x08,
0x07, 0x06, 0x05, 0x04, 0x03, 0x02, 0x01, 0x00
};
unsigned char i = 0;
serial_port_one_initial(); //串口1初始化
// serial_port_two_initial(); //串口2初始化
display_MCU_Start_Led(); //点亮发光二极管表示单片机开始工作
// send_UART_two(0x55); //串口2发送数据表示单片机串口正常工作
// send_UART_two(0xaa); //串口2发送数据表示单片机串口正常工作
/*
for(array_point=0; array_point<512; array_point++)
{
send_UART_two(Test_array_one[array_point]);
}
*/
send_UART_one(0x34); //串口1发送数据表示单片机串口正常工作
send_UART_one(0xa7); //串口1发送数据表示单片机串口正常工作
for(array_point=0; array_point<512; array_point++)
{
send_UART_one(Test_array_one[array_point]);
}
// send_PWM(); //6kHz PWM, 50% ty
while(1);
}
void serial_port_one_initial()
{
SCON = 0x50; //0101,0000 8位可变波特率，无奇偶校验位
// TMOD = 0x21; //0011,0001 设置顶时器1为8位自动重装计数器
// TH1 = RELOAD_COUNT; //设置定时器1自动重装数
// TL1 = RELOAD_COUNT;
// TR1 = 1; //开定时器1
BRT = RELOAD_COUNT;
// BRTR = 1, S1BRS = 1, EXTRAM = 1 ENABLE EXTRAM
AUXR = 0x11; // T0x12,T1x12,UART_M0x6,BRTR,S2SMOD,BRTx12,EXTRAM,S1BRS
ES = 1; //允许串口中断
EA = 1; //开总中断
}
void serial_port_two_initial()
{
//sfr SCON = 0x98;
//SM0,SM1,SM2,REN,TB8,RB8,TI,RI
//sfr S2CON = 0x9A;
//S2SM0,S2SM1,S2SM2,S2REN,S2TB8,S2RB8,S2TI,S2RI
//sfr S2BUF = 0x9B;
//sfr IE2 = 0xAF;
//X,X,X,X,X,X,ESPI,ES2
S2CON = 0x50; //0101,0000 8位可变波特率，无奇偶校验位,允许接收
BRT = RELOAD_COUNT;
// BRTR = 1, S1BRS = 1, EXTRAM = 0 ENABLE EXTRAM
AUXR = 0x11; // T0x12,T1x12,UART_M0x6,BRTR,S2SMOD,BRTx12,EXTRAM,S1BRS
// ES = 1; //允许串口1中断
// ES2 = 1
IE2 = 0x01; //允许串口2中断,ES2=1
EA = 1; //开总中断
}
void send_UART_one(unsigned char i)
{
ES = 0; //关串口中断
TI = 0; //清零串口发送完成中断请求标志
SBUF = i;
while(TI ==0); //等待发送完成
TI = 0; //清零串口发送完成中断请求标志
ES = 1; //允许串口中断
}
void send_UART_two(unsigned char i)
{
//sfr SCON = 0x98;
//SM0,SM1,SM2,REN,TB8,RB8,TI,RI
//sfr S2CON = 0x9A;
//S2SM0,S2SM1,S2SM2,S2REN,S2TB8,S2RB8,S2TI,S2RI
//sfr S2BUF = 0x9B;
//sfr IE2 = 0xAF;
//X,X,X,X,X,X,ESPI,ES2
unsigned char temp = 0;
// ES = 0; //关串口1中断
IE2 = 0x00; //关串口2中断,es2=0
// TI = 0; //清零串口1发送完成中断请求标志
S2CON = S2CON & 0xFD; //B'11111101,清零串口2发送完成中断请求标志
// SBUF = i;
S2BUF = i;
// while(TI ==0); //等待发送完成
do
{
temp = S2CON;
temp = temp & 0x02;
}while(temp==0);
// TI = 0; //清零串口发送完成中断请求标志
S2CON = S2CON & 0xFD; //B'11111101,清零串口2发送完成中断请求标志
// ES = 1; //允许串口1中断
// ES2 = 1
IE2 = 0x01; //允许串口2中断,ES2=1
}
void UART_one_Interrupt_Receive(void) interrupt 4
{
unsigned char k = 0;
if(RI==1)
{
RI = 0;
k = SBUF;
if(k==Self_Define_ISP_Download_Command) //是自定义下载命令
{
delay(); //延时1秒就足够了
delay(); //延时1秒就足够了
soft_reset_to_ISP_Monitor(); //软复位到系统ISP监控区
}
send_UART_one(k+1);
}
else
{
TI = 0;
}
}
void UART_two_Interrupt_Receive(void) interrupt 8
{
//sfr SCON = 0x98;
//SM0,SM1,SM2,REN,TB8,RB8,TI,RI
//sfr S2CON = 0x9A;
//S2SM0,S2SM1,S2SM2,S2REN,S2TB8,S2RB8,S2TI,S2RI
//sfr S2BUF = 0x9B;
//sfr IE2 = 0xAF;
//X,X,X,X,X,X,ESPI,ES2
unsigned char k = 0;
k = S2CON ;
k = k & 0x01;
//if(S2RI==1)
if(k==1)
{
//RI = 0;
S2CON = S2CON & 0xFE; //1111,1110
S2_Interrupt_Receive_Led = 0;
k = S2BUF;
if(k==Self_Define_ISP_Download_Command) //是自定义下载命令
{
delay(); //延时1秒就足够了
delay(); //延时1秒就足够了
soft_reset_to_ISP_Monitor(); //软复位到系统ISP监控区
}
send_UART_two(k+1);
}
else
{
//TI = 0;
S2CON = S2CON & 0xFD; //1111,1101
}
}
void soft_reset_to_ISP_Monitor(void)
{
IAP_CONTR = 0x60; //0110,0000 软复位到系统ISP监控区
}
void delay(void)
{
unsigned int j = 0;
unsigned int g = 0;
for(j=0;j<5;j++)
{
for(g=0;g<60000;g++)
{
_nop_();
_nop_();
_nop_();
_nop_();
_nop_();
}
}
}
void display_MCU_Start_Led(void)
{
//sbit MCU_Start_Led = P1^7;
unsigned char i = 0;
for(i=0;i<1;i++)
{
MCU_Start_Led = 0; //顶亮MCU开始工作指示灯
delay();
MCU_Start_Led = 1; //熄灭MCU开始工作指示灯
delay();
MCU_Start_Led = 0; //顶亮MCU开始工作指示灯
}
}
void send_PWM(void)
{
CMOD = 0x00; // CIDL - - - - CPS1 CPS0 ECF Setup PCA Timer
// CPS1 CPS0 = 00, Fosc/12 is PCA/PWM clock
// 18432000/12/256 = 6000
CL = 0x00;
CH = 0x00;
CCAP0L = 0x80; //Set the initial value same as CCAP0H
CCAP0H = 0x80; //50% Duty Cycle
CCAPM0 = 0x42; //0100,0010 Setup PCA mole 0 in 8BIT PWM, P3.7
CR = 1; //启动 PCA/PWM 定时器
}
6. 51单片机串口收发程序
11，单片串口的收发程序镇甘城子应该也是比较不错的证件，能够真诚地使用所有认为这个属相应该比较广一点儿也不所以我认为这跟屏幕放大。
7. 求51单片机串口接收程序
void Init_Com(void)//功能:串口初始化,波特率，方式1
{
TMOD=0x20;//定时器工作方式2
TH1=0xfa;//晶振11.0592，波特率4800
TL1=0xfa;
SCON=0x50;//串行口工作在方式1，允许接收，波特率由定时器控制
PCON=0x00;//串行口加倍位为0
ES=1;
TR1=1;
ES = 1; //开串口中断
EA = 1; //开总中断
}
void Com_Int(void) interrupt 4 //串口接收中断函数
{
EA = 0;
if(RI == 1) //当硬件接收到一个数据时，RI会置位
{
DATA= SBUF; //保存接收到的数据
RI = 0; //接收到一位数据后就让RI为零，关闭中断
}
EA = 1;
}
8. 编写单片机串口收发数据的完整程序（C语言编写）
我用的新唐芯片，8051内核，跟51差不多，望采纳
void UART_Initial (void)
{
P02_Quasi_Mode; //Setting UART pin as Quasi mode for transmit
P16_Quasi_Mode; //Setting UART pin as Quasi mode for transmit
SCON_1 = 0x50; //UART1 Mode1,REN_1=1,TI_1=1
T3CON = 0x08; //T3PS2=0,T3PS1=0,T3PS0=0(Prescale=1), UART1 in MODE 1
clr_BRCK;
RH3 = HIBYTE(65536 - (1000000/u32Baudrate)-1); /*16 MHz */
RL3 = LOBYTE(65536 - (1000000/u32Baudrate)-1); /*16 MHz */
set_TR3; //Trigger Timer3
}
以上是初始化的
void Send_Data_To_UART1(UINT8 c)
{
TI_1 = 0;
SBUF_1 = c;
while(TI_1==0);
}
这个是发送
void UART_isr (void) interrupt 4 //串行中断服务程序
{
if (RI_1==1)
{ /* if reception occur */
clr_RI_1; /* clear reception flag for next reception */
Receive_Date[c] = SBUF_1;
if (Receive_Date[0] == First_Date)
{
c++;
}
else if(Receive_Date_Size > 0 && Receive_Date_Size < 4)
{
c++;
}
else if(Receive_Date[c] == Last_Date && Receive_Date_Size ==4)
{
c = 0;
Flag_Receive_One = 1;
}
else
{
c = 0;
}
}
}
接收
9. 简单51单片机串口程序
试试下列程序，这时用中断发送的。
#include<reg51.h>
#define uchar unsigned char
uchar txt[] = "hello";
uchar i = 0;
void main(void)
{
PCON = 0X00;
SCON = 0X50;
TMOD = 0X20;
TH1 = 0XFD;
TL1 = 0XFD;
TR1 = 1;
EA = 1;
ES = 1;
TI = 1;
while(1) {
if(i == 6) {
i = 0;
TI = 1;
}
}
}
void uart() interrupt 4
{
if(RI == 1) RI = 0;
if(TI == 1) {SBUF = txt[i++]; TI = 0;}
}
本程序，可以用串口助手接收。收到的是：hellohellohellohellohello....
10. 单片机串口程序
用中断方式就行了，程序写到串口中断程序中去