#include "DSP2833x_Device.h" // DSP2833x Headerfile Include File
#include "DSP2833x_Examples.h" // DSP2833x Examples Include File
#define RT1 GpioDataRegs.GPADAT.bit.GPIO5
/*
#define LED2 GpioDataRegs.GPADAT.bit.GPIO1
#define LED3 GpioDataRegs.GPADAT.bit.GPIO2
#define LED4 GpioDataRegs.GPADAT.bit.GPIO3
#define LED5 GpioDataRegs.GPADAT.bit.GPIO4 */
typedef unsigned char U8; /* defined for unsigned 8-bits integer variable 无符号8位整型变量 */
typedef signed char S8; /* defined for signed 8-bits integer variable 有符号8位整型变量 */
typedef unsigned int U16; /* defined for unsigned 16-bits integer variable 无符号16位整型变量 */
typedef signed int S16; /* defined for signed 16-bits integer variable 有符号16位整型变量 */
typedef unsigned long U32; /* defined for unsigned 32-bits integer variable 无符号32位整型变量 */
typedef signed long S32; /* defined for signed 32-bits integer variable 有符号32位整型变量 */
typedef float F32; /* single precision floating point variable (32bits) 单精度浮点数(32位长度) */
typedef double F64; /* double precision floating point variable (64bits) 双精度浮点数(64位长度) */
//
#define uchar unsigned char
#define uint unsigned int
// #define Data_0_time 4
//----------------------------------------------//
//----------------------------------------------//
U8 U8FLAG,k;
U8 U8count,U8temp;
U8 U8T_data_H,U8T_data_L,U8RH_data_H,U8RH_data_L,U8checkdata;
U8 U8T_data_H_temp,U8T_data_L_temp,U8RH_data_H_temp,U8RH_data_L_temp,U8checkdata_temp;
U8 U8comdata;
U8 outdata[5]; //定义发送的字节数
U8 indata[5];
U8 count, count_r=0;
// U8 str[5]={"RS232"};
U16 U16temp1,U16temp2,U8RH,U8T;
/*SendData(U8 *a)
{
outdata[0] = a[0];
outdata[1] = a[1];
outdata[2] = a[2];
outdata[3] = a[3];
outdata[4] = a[4];
count = 1;
SBUF=outdata[0];
} */
void Delay(U16 j)
{ U8 i;
for(;j>0;j--)
{
for(i=0;i<27;i++);
}
}
void Delay_10us(void)
{
U8 i;
i--;
i--;
i--;
i--;
i--;
i--;
}
void configtestled(void);
void COM(void)
{
U8 i;
U8comdata=0;
GpioCtrlRegs.GPADIR.bit.GPIO5 = 0; // GPIO0设置为输入
for(i=0;i<8;i++)
{
U8FLAG=2;
while((!RT1)&&U8FLAG++);
Delay_10us();
Delay_10us();
Delay_10us();
U8temp=0;//26-28us,表示0
if(RT1)
{ U8temp=1;
U8FLAG=2;}//超过28us依然为高电平,表示为1
while((RT1)&&U8FLAG++);
//超时则跳出for循环
if(U8FLAG==0x0001)break;
//判断数据位是0还是1
// 如果高电平高过预定0高电平值则数据位为 1
U8comdata<<=1;
U8comdata|=U8temp; //0
}//rof
}
//--------------------------------
//-----湿度读取子程序 ------------
//--------------------------------
//----以下变量均为全局变量--------
//----温度高8位== U8T_data_H------
//----温度低8位== U8T_data_L------
//----湿度高8位== U8RH_data_H-----
//----湿度低8位== U8RH_data_L-----
//----校验 8位 == U8checkdata-----
//----调用相关子程序如下----------
//---- Delay();, Delay_10us();,COM();
//--------------------------------
void RH(void)
{
configtestled();
//主机拉低500us
RT1=0;
Delay(5);
RT1=1;
//总线由上拉电阻拉高 主机延时20us
Delay_10us();
Delay_10us();
Delay_10us();
Delay_10us();
//主机设为输入 判断从机响应信号
// P2_0=1;
GpioCtrlRegs.GPAMUX1.bit.GPIO5 = 0; // GPIO5复用为GPIO功能
GpioCtrlRegs.GPADIR.bit.GPIO5 = 0; // GPIO5设置为输入
//判断从机是否有低电平响应信号 如不响应则跳出,响应则向下运行
if(!RT1) //T !
{
U8FLAG=2;
//判断从机是否发出 80us 的低电平响应信号是否结束
while((!RT1)&&U8FLAG++);
U8FLAG=2;
//判断从机是否发出 80us 的高电平,如发出则进入数据接收状态
while((RT1)&&U8FLAG++);
//数据接收状态
COM();
U8RH_data_H_temp=U8comdata;
COM();
U8RH_data_L_temp=U8comdata;
COM();
U8T_data_H_temp=U8comdata;
COM();
U8T_data_L_temp=U8comdata;
COM();
U8checkdata_temp=U8comdata;
RT1=1; //?????
//数据校验
U8temp=(U8T_data_H_temp+U8T_data_L_temp+U8RH_data_H_temp+U8RH_data_L_temp);
if(U8temp==U8checkdata_temp)
{
U8RH_data_H=U8RH_data_H_temp;
U8RH_data_L=U8RH_data_L_temp;
U8T_data_H=U8T_data_H_temp;
U8T_data_L=U8T_data_L_temp;
U8checkdata=U8checkdata_temp;
}//fi
}//fi
U8RH=256*U8RH_data_H+U8RH_data_L;
U8T=U8T_data_H*256+U8T_data_L;
}
//----------------------------------------------
//main()功能描述: AT89C51 11.0592MHz 串口发
//送温湿度数据,波特率 9600
void main(void)
{
// Step 1. Initialize System Control:
// PLL, WatchDog, enable Peripheral Clocks
// This example function is found in the DSP2833x_SysCtrl.c file.
// Step 2. Initalize GPIO:
// This example function is found in the DSP2833x_Gpio.c file and
// illustrates how to set the GPIO to it's default state.
// InitGpio(); // Skipped for this example
InitXintf16Gpio(); //zq
InitPieCtrl();
// Step 3. Clear all interrupts and initialize PIE vector table:
// Disable CPU interrupts
DINT;
// Initialize the PIE control registers to their default state.
// The default state is all PIE interrupts disabled and flags
// are cleared.
// This function is found in the DSP2833x_PieCtrl.c file.
// InitPieCtrl();
// Disable CPU interrupts and clear all CPU interrupt flags:
IER = 0x0000;
IFR = 0x0000;
// Initialize the PIE vector table with pointers to the shell Interrupt
// Service Routines (ISR).
// This will populate the entire table, even if the interrupt
// is not used in this example. This is useful for debug purposes.
// The shell ISR routines are found in DSP2833x_DefaultIsr.c.
// This function is found in DSP2833x_PieVect.c.
InitPieVectTable();
// configtestled();
// LED1=1;
// DELAY_US(10);
// LED2=1;
// DELAY_US(10);
//uchar str[6]={"RS232"};
/* 系统初始化 */
/* TMOD = 0x20; //定时器T1使用工作方式2
TH1 = 253; // 设置初值
TL1 = 253;
TR1 = 1; // 开始计时
SCON = 0x50; //工作方式1,波特率9600bps,允许接收
ES = 1;
EA = 1; // 打开所以中断
TI = 0;
RI = 0;
SendData(str) ; //发送到串口
Delay(10); //延时100US(12M晶振) */
while(1)
{
//------------------------
//调用温湿度读取子程序
RH();
//串口显示程序
//--------------------------
/*str[0]=U8RH_data_H;
str[1]=U8RH_data_L;
str[2]=U8T_data_H;
str[3]=U8T_data_L;
str[4]=U8checkdata;
SendData(str) ; //发送到串口
//读取模块数据周期不宜小于 2S
Delay(20000);*/
}//elihw
}//MAIN
/*
void RSINTR() interrupt 4 using 2
{
U8 InPut3;
if(TI==1) //发送中断
{
TI=0;
if(count!=5) //发送完5位数据
{
SBUF= outdata[count];
count++;
}
}
if(RI==1) //接收中断
{
InPut3=SBUF;
indata[count_r]=InPut3;
count_r++;
RI=0;
if (count_r==5)//接收完4位数据
{
//数据接收完毕处理。
count_r=0;
str[0]=indata[0];
str[1]=indata[1];
str[2]=indata[2];
str[3]=indata[3];
str[4]=indata[4];
P0=0;
}
}
} */
void configtestled (void)
{
EALLOW;
GpioCtrlRegs.GPAMUX1.bit.GPIO5 = 0; // GPIO0复用为GPIO功能
GpioCtrlRegs.GPADIR.bit.GPIO5 = 1; // GPIO0设置为输出
/*
GpioCtrlRegs.GPAMUX1.bit.GPIO1 = 0; // GPIO1 = GPIO1
GpioCtrlRegs.GPADIR.bit.GPIO1 = 1;
GpioCtrlRegs.GPAMUX1.bit.GPIO2 = 0; // GPIO0复用为GPIO功能
GpioCtrlRegs.GPADIR.bit.GPIO2 = 1; // GPIO0设置为输出
GpioCtrlRegs.GPAMUX1.bit.GPIO3 = 0; // GPIO1 = GPIO1
GpioCtrlRegs.GPADIR.bit.GPIO3 = 1;
GpioCtrlRegs.GPAMUX1.bit.GPIO4 = 0; // GPIO1 = GPIO1
GpioCtrlRegs.GPADIR.bit.GPIO4 = 1;
EDIS;*/
}
//===========================================================================
// No more.
//===========================================================================
程序有问题,但刚开始学,本来是51单片机的程序,想转成dsp的 |