如果用ADC测量交流电流，用电流互感器，怎么做会比较准确一点？
正在学习冲哥ADC视频
正在学习冲哥ADC视频
学习中，keil2也可以用
<p>第8课学习中遇到问题，当count_ms与count_ms同时执行时按下P32按钮后灯不是一个一个跳动（就是mum不是一个数一个数的＋，按一下按钮要加好几下。有视频教程不符），不知道什么原因！</p>
<pre><code>
#include "ai8051u.h" //调用ai8051u.h头文件
#include "stc32_stc8_usb.h" //调用自动下载头文件
#include "intrins.h" //调用头文件
#define u8 unsigned char //8位无符号变量
#define u16 unsigned int //16位无符号变量
u8state={0x01,0x02,0x04,0x08,0x10,0x20,0x40,0x80};
u16 count_ms={0,0,0};
u8 i=0;
u8 mum=0;
u16 Key_Vol=0;
//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++//
// 代码声明
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++//
void Timer0_Init(); //1毫秒@24.000MHz
char *USER_DEVICEDESC = NULL;
char *USER_PRODUCTDESC = NULL;
char *USER_STCISPCMD = "@STCISP#";
//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++//
// 主函数
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++//
void main()
{
int count=1;
//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++//
// 以下为USB自动下载程序
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++//
// 打开全部寄存器(EAXFR打开XFR使能——打开寄存器EA总开关——EUSB（USB）开关) //
WTST = 0;//设置程序指令延时参数，赋值为0可将CPU执行指令的速度设置为最快
EAXFR = 1; //扩展寄存器(XFR)访问使能
CKCON = 0; //提高访问XRAM速度
P0M1 = 0x00; P0M0 = 0x00;
P1M1 = 0x00; P1M0 = 0x00;
P2M1 = 0x00; P2M0 = 0x00;
P3M1 = 0x00; P3M0 = 0x00;
P4M1 = 0x00; P4M0 = 0x00;
P5M1 = 0x00; P5M0 = 0x00;
P6M1 = 0x00; P6M0 = 0x00;
P7M1 = 0x00; P7M0 = 0x00;
Timer0_Init();
usb_init(); //USB CDC 接口重置配置
EUSB = 1; //USB寄存器开关打开
EA = 1; //IE2 |= 0x80;寄存器总开关打开
while (DeviceState != DEVSTATE_CONFIGURED); //等待USB完成配置
while (1)
{
if (bUsbOutReady)
{
USB_SendData(UsbOutBuffer,OutNumber); //发送数据缓冲区，长度（接收数据原样返回, 用于测试）
usb_OUT_done();
}
P40=0;
P0=~state;
if(count_ms>1000)
{
count_ms=0;
printf("ai8051U \r\n");
}
if(count_ms>=10);
{
count_ms=0;
if(P32 == 0)
{
Key_Vol ++ ;
if(Key_Vol==5)
{
mum ++;
}
}
else
{
Key_Vol = 0 ;
}
}
//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++//
// 以上为USB自动下载程序
//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++//
} //禁止删除括号
} //禁止删除括号
//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++//
//以下为代码定时中断 100微秒@24.000MHz
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++//
void Timer0_Isr(void) interrupt 1
{
for(i=0;i<3;i++)
{
count_ms++;
}
}
void Timer0_Init(void) //1毫秒@24.000MHz
{
TM0PS = 0x00; //设置定时器时钟预分频 ( 注意:并非所有系列都有此寄存器,详情请查看数据手册 )
AUXR &= 0x7F; //定时器时钟12T模式
TMOD &= 0xF0; //设置定时器模式
TL0 = 0x30; //设置定时初始值
TH0 = 0xF8; //设置定时初始值
TF0 = 0; //清除TF0标志
TR0 = 1; //定时器0开始计时
ET0 = 1; //使能定时器0中断
}
</code></pre>
{:guzhang:}
今天串口的高级应用
第8集学习，我觉得学完冲哥的ai8051u深度入门，以后自己可以写操作系统了{:4_250:}
第8集学习，我觉得学完冲哥的ai8051u深度入门，以后自己可以写操作系统了{:4_250:}
原来擎天柱不是这个，那么小能做大多数实验吗？截图中的试验箱送吗，如果购买的话多少钱？