139 lines
2.8 KiB
C
139 lines
2.8 KiB
C
/*
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* Copyright (c) 2011 ITE Tech. Inc. All Rights Reserved.
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*/
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/**
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* @author Jim Tan
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* @version 1.0
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*/
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#include "H/Function_Init.H"
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#define STANDAED_K 0.069849
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#define Maxsize 3
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/**************************************************************
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传感器相关参数输入
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#define Max_Weight 300000 //最大工作重量单位 g
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#define Sensitivity 2 //灵敏度 mv/v
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#define Ex_U 5 //激励电压,adc默认选择内部vcc为激励 v
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#define ADC_PGA 128 //ADC芯片运放倍数
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#define ADC_MAX_NUM 7FFFFF //ADC输出范围
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STANDAED_K = (Ex_U/2/ADC_PGA/ADC_MAX_NUM) /(Sensitivity*Ex_U)*Max_Weight //为了避免精度丢失，请用计算器计算再手动输入
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***************************************************************/
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bit Key0_flag = 0;//全局变量，定义在Function_Init.H,这里赋初值
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bit Key1_flag = 0;
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/////////////中值滤波3
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long Bubble_Sort_3(long* Data)
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{
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uchar i,j;
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long temp;
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for(i=0;i<2;i++)
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{
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for(j=0;j<2-i;j++)
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{
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if(Data[j]>Data[j+1])
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{
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temp = Data[j];
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Data[j] = Data[j+1];
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Data[j+1] = temp;
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}
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}
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}
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return Data[1];
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}
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void main(void)
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{
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//////////////该部分代码为采集ADC读数初始值 原始数据
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// long read_buff[4];
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//
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// IO_Init();
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// Uart_Test();
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//
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// CS1237_Init_all();//ADC初始化
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// Delay_ms(300);//等待ADC芯片复位
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// CS1237_Config_all();//ADC配置
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//
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// while(1)
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// {
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// for(i=0;i<4;i++)
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// {
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// send_buff[i] = zero_buff[i];
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// }
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// UART_SendAll(send_buff);
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// }
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//////////////该部分代码为采集并观察4路传感器的读数
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long send_buff[4];
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long zero_buff[4];
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long data_buff[4];
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long queue[4][3];
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int queue_p;
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float k = STANDAED_K; //传感器系数
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long uart_buff[4]=0;
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// uchar function_ret = 0;
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// long zero_sort[9];
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uchar i,j;
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uchar a = 20; //一阶滤波系数，（1-100）越小越平滑，灵敏度越低 设置为50 1s就可以接近到千分之999 设置为20需要等待3s左右才能接近千分之999
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IO_Init(); //IO初始化,先将默认的所有未使用引脚到设置成强推挽输出，
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Uart_Test(); //串口初始化
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Timer_Test(); //定时器初始化
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CS1237_Init_all();//ADC初始化
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Delay_ms(300);//等待ADC芯片建立时间
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CS1237_Config_all();//ADC配置
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for(i=0;i<4;i++)
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{
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zero_buff[i] = Read_CS1237_all(i);
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send_buff[i] = zero_buff[i];
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}
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for(i=0;i<4;i++)
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{
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for(j=0;j<Maxsize;j++)
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{
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queue[i][j] = Read_CS1237_all(i);
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}
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}
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while(1)
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{
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for(i=0;i<4;i++)
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{
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queue[i][queue_p] = Read_CS1237_all(i);
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data_buff[i] = Bubble_Sort_3(queue[i]);
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}
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queue_p = (queue_p+1)%3;
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for(i=0;i<4;i++)
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{
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send_buff[i] = ((100-a)*send_buff[i] + a*data_buff[i])/100; //一阶滤波
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}
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if(Key0_flag)//去皮，长按3s
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{
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Key0_flag=0;
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for(i=0;i<4;i++)
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{
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zero_buff[i] = send_buff[i];
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}
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}
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for(i=0;i<4;i++)
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{
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uart_buff[i] =(send_buff[i]-zero_buff[i])*k;
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UART_Send_VOFA(uart_buff[i]);
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if(i<3)
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UART_SendByte(44);//','逗号分隔
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}
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UART_SendByte(10);//'\r'加回车符
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UART_SendByte(13);//'\n'加换行符
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}
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}
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