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发表于 2023-6-1 08:40:09
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/*---------------------------------------------------------------------*/
/* --- STC MCU Limited ------------------------------------------------*/
/* --- STC15F4K60S4 系列 定时器0的16位自动重装载模式举例---------------*/
/* --- Mobile: (86)13922805190 -------------- -------------------------*/
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/* --- Tel: 86-0513-55012928,55012929,55012966-------------------------*/
/* --- Web: www.STCMCU.com --------------------------------------------*/
/* --- Web: www.GXWMCU.com --------------------------------------------*/
/* 如果要在程序中使用此代码,请在程序中注明使用了STC的资料及程序 */
/* 如果要在文章中应用此代码,请在文章中注明使用了STC的资料及程序 */
/*---------------------------------------------------------------------*/
//本示例在Keil开发环境下请选择Intel的8058芯片型号进行编译
//若无特别说明,工作频率一般为11.0592MHz
//STC15F2K60S2 系列
//定时器1的16位自动重装载模式;1ms中断
//定时器0的16位自动重装载模式;10ms中断
//定时器2用作串口1的波特率发生器
//的初始化例子.
#include "reg51.h"
#include "intrins.h"
typedef unsigned char BYTE;
typedef unsigned int WORD;
#define FOSC 11059200L //系统频率
#define BAUD 115200 //串口波特率
#define NONE_PARITY 0 //无校验
#define ODD_PARITY 1 //奇校验
#define EVEN_PARITY 2 //偶校验
#define MARK_PARITY 3 //标记校验
#define SPACE_PARITY 4 //空白校验
#define PARITYBIT NONE_PARITY //定义校验位
//-----------------------------------------------
#define T0MS (65536-FOSC/10000) //1T模式
//#define T0MS (65536-FOSC/12/10000) //12T模式
#define T1MS (65536-FOSC/1000) //1T模式
//#define T1MS (65536-FOSC/12/1000) //12T模式
sfr P0M1 = 0x93;
sfr P0M0 = 0x94;
sfr P1M1 = 0x91;
sfr P1M0 = 0x92;
sfr P2M1 = 0x95;
sfr P2M0 = 0x96;
sfr P3M1 = 0xb1;
sfr P3M0 = 0xb2;
sfr P4M1 = 0xb3;
sfr P4M0 = 0xb4;
sfr P5M1 = 0xC9;
sfr P5M0 = 0xCA;
sfr P6M1 = 0xCB;
sfr P6M0 = 0xCC;
sfr P7M1 = 0xE1;
sfr P7M0 = 0xE2;
sfr AUXR = 0x8e; //Auxiliary register
sfr T2H = 0xd6; //定时器2高8位
sfr T2L = 0xd7; //定时器2低8位
sfr P_SW1 = 0xA2; //外设功能切换寄存器1
#define S1_S0 0x40 //P_SW1.6
#define S1_S1 0x80 //P_SW1.7
sbit P10 = P1^0;
sbit P11 = P1^1;
sbit P22 = P2^2;
bit busy;
void SendData(BYTE dat);
void SendString(char *s);
//-----------------------------------------------
/* Timer0 interrupt routine */
void tm0_isr() interrupt 1
{
P10 = ! P10; //将测试口取反
}
//-----------------------------------------------
/* Timer1 interrupt routine */
void tm1_isr() interrupt 3
{
P11 = ! P11; //将测试口取反
}
//-----------------------------------------------
/* main program */
void main()
{
P0M0 = 0x00;
P0M1 = 0x00;
P1M0 = 0x00;
P1M1 = 0x00;
P2M0 = 0x00;
P2M1 = 0x00;
P3M0 = 0x00;
P3M1 = 0x00;
P4M0 = 0x00;
P4M1 = 0x00;
P5M0 = 0x00;
P5M1 = 0x00;
P6M0 = 0x00;
P6M1 = 0x00;
P7M0 = 0x00;
P7M1 = 0x00;
AUXR |= 0x80; //定时器0为1T模式
// AUXR &= 0x7f; //定时器0为12T模式
TMOD = 0x00; //设置定时器为模式0(16位自动重装载)
TL0 = T0MS; //初始化计时值
TH0 = T0MS >> 8;
TR0 = 1; //定时器0开始计时
ET0 = 1; //使能定时器0中断
AUXR |= 0x40; //定时器1为1T模式
// AUXR &= 0xdf; //定时器1为12T模式
TMOD |= 0x00; //设置定时器为模式0(16位自动重装载)
TL1 = T1MS; //初始化计时值
TH1 = T1MS >> 8;
TR1 = 1; //定时器1开始计时
ET1 = 1;
ACC = P_SW1;
ACC &= ~(S1_S0 | S1_S1); //S1_S0=0 S1_S1=0
P_SW1 = ACC; //(P3.0/RxD, P3.1/TxD)
// ACC = P_SW1;
// ACC &= ~(S1_S0 | S1_S1); //S1_S0=1 S1_S1=0
// ACC |= S1_S0; //(P3.6/RxD_2, P3.7/TxD_2)
// P_SW1 = ACC;
//
// ACC = P_SW1;
// ACC &= ~(S1_S0 | S1_S1); //S1_S0=0 S1_S1=1
// ACC |= S1_S1; //(P1.6/RxD_3, P1.7/TxD_3)
// P_SW1 = ACC;
#if (PARITYBIT == NONE_PARITY)
SCON = 0x50; //8位可变波特率
#elif (PARITYBIT == ODD_PARITY) || (PARITYBIT == EVEN_PARITY) || (PARITYBIT == MARK_PARITY)
SCON = 0xda; //9位可变波特率,校验位初始为1
#elif (PARITYBIT == SPACE_PARITY)
SCON = 0xd2; //9位可变波特率,校验位初始为0
#endif
T2L = (65536 - (FOSC/4/BAUD)); //设置波特率重装值
T2H = (65536 - (FOSC/4/BAUD))>>8;
AUXR |= 0x14; //T2为1T模式, 并启动定时器2
AUXR |= 0x01; //选择定时器2为串口1的波特率发生器
ES = 1; //使能串口1中断
EA = 1;
SendString("STC15F2K60S2\r\nUart Test !\r\n");
while (1);
}
/*----------------------------
UART 中断服务程序
-----------------------------*/
void Uart() interrupt 4
{
if (RI)
{
RI = 0; //清除RI位
P0 = SBUF; //P0显示串口数据
P22 = RB8; //P2.2显示校验位
}
if (TI)
{
TI = 0; //清除TI位
busy = 0; //清忙标志
}
}
/*----------------------------
发送串口数据
----------------------------*/
void SendData(BYTE dat)
{
while (busy); //等待前面的数据发送完成
ACC = dat; //获取校验位P (PSW.0)
if (P) //根据P来设置校验位
{
#if (PARITYBIT == ODD_PARITY)
TB8 = 0; //设置校验位为0
#elif (PARITYBIT == EVEN_PARITY)
TB8 = 1; //设置校验位为1
#endif
}
else
{
#if (PARITYBIT == ODD_PARITY)
TB8 = 1; //设置校验位为1
#elif (PARITYBIT == EVEN_PARITY)
TB8 = 0; //设置校验位为0
#endif
}
busy = 1;
SBUF = ACC; //写数据到UART数据寄存器
}
/*----------------------------
发送字符串
----------------------------*/
void SendString(char *s)
{
while (*s) //检测字符串结束标志
{
SendData(*s++); //发送当前字符
}
}
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发表于 2023-5-31 23:06:08
