c8051f340定时器2怎么无法控制，贴代码

只看该作者 · 2013-8-16 10:24

#include<c8051f340.h>

// Peripheral specific initialization functions,
// Called from the Init_Device() function
void PCA_Init()
{
PCA0MD &= ~0x40;
PCA0MD = 0x00;
}

void Timer_Init()
{
TMR2RLL = 0xffff;
TMR2L    = 0xffff;
}

void Port_IO_Init()
{
// P0.0  -  Unassigned,  Open-Drain, Digital
// P0.1  -  Unassigned,  Open-Drain, Digital
// P0.2  -  Unassigned,  Open-Drain, Digital
// P0.3  -  Unassigned,  Open-Drain, Digital
// P0.4  -  Unassigned,  Open-Drain, Digital
// P0.5  -  Unassigned,  Open-Drain, Digital
// P0.6  -  Unassigned,  Open-Drain, Digital
// P0.7  -  Unassigned,  Open-Drain, Digital

// P1.0  -  Unassigned,  Open-Drain, Digital
// P1.1  -  Unassigned,  Open-Drain, Digital
// P1.2  -  Unassigned,  Open-Drain, Digital
// P1.3  -  Unassigned,  Open-Drain, Digital
// P1.4  -  Unassigned,  Open-Drain, Digital
// P1.5  -  Unassigned,  Open-Drain, Digital
// P1.6  -  Unassigned,  Open-Drain, Digital
// P1.7  -  Unassigned,  Open-Drain, Digital

// P2.0  -  Unassigned,  Open-Drain, Digital
// P2.1  -  Unassigned,  Open-Drain, Digital
// P2.2  -  Unassigned,  Open-Drain, Digital
// P2.3  -  Unassigned,  Open-Drain, Digital
// P2.4  -  Unassigned,  Push-Pull,  Digital
// P2.5  -  Unassigned,  Open-Drain, Digital
// P2.6  -  Unassigned,  Open-Drain, Digital
// P2.7  -  Unassigned,  Open-Drain, Digital

// P3.0  -  Unassigned,  Open-Drain, Digital
// P3.1  -  Unassigned,  Open-Drain, Digital
// P3.2  -  Unassigned,  Open-Drain, Digital
// P3.3  -  Unassigned,  Open-Drain, Digital
// P3.4  -  Unassigned,  Open-Drain, Digital
// P3.5  -  Unassigned,  Open-Drain, Digital
// P3.6  -  Unassigned,  Open-Drain, Digital
// P3.7  -  Unassigned,  Open-Drain, Digital

P2MDOUT = 0x10;
XBR1    = 0x40;
}

void Oscillator_Init()
{
OSCICN = 0x83;
}

// Initialization function for device,
// Call Init_Device() from your main program
void Init_Device(void)
{
PCA_Init();
Timer_Init();
Port_IO_Init();
Oscillator_Init();
}

sbit D3=P2^4;
void main()
{

   Init_Device();
   TR2=1;
   while(1)
      {
      while(TF2H==0);
      TF2H=0;

          D3=~D3;
}
}

只看该作者 · 2013-8-16 10:26

修改TMR2RLL=0x0000 TMR2L =0x0000 后。为什么波形基本没变化？？？？？？？按理说变化应该很大啊

1万 · 2013-8-16 10:27

本帖最后由 ayb_ice 于 2013-8-16 10:29 编辑

什么叫无法控制

是你不会控制吧

另外可能狗咬人了吧

只看该作者 · 2013-8-16 10:28

感谢指教，我哪里乱控制了？？

只看该作者 · 2013-8-16 10:31

狗咬人？？我已经关闭看门狗啦啊？在pca初始化设置那里关狗了

只看该作者 · 2013-8-16 10:35

准确的说，应该是我哪里设置问题。就是不知道哪里出了问题。论坛的大神出来看看

只看该作者 · 2013-8-16 10:41

准确的说，应该是我哪里设置问题。就是不知道哪里出了问题。论坛的大神出来看看

只看该作者 · 2013-8-16 10:43

ayb_ice 发表于 2013-8-16 10:27
什么叫无法控制

是你不会控制吧

你好，你能发现这代码哪里有问题吗？

只看该作者 · 2013-8-16 10:53

求高人指点

只看该作者 · 2013-8-16 11:10

我找到原因了。谢谢大家

只看该作者 · 2013-8-16 11:11

#include<c8051f340.h>
sfr16 TMR2RL = 0xCA;                // Timer2 Reload Register
sfr16 TMR2 = 0xCC;                   // Timer2 Register

// Peripheral specific initialization functions,
// Called from the Init_Device() function
void PCA_Init()
{
PCA0MD &= ~0x40;
PCA0MD = 0x00;
}

void Timer_Init()
{
TMR2RL = 0xffff;
TMR2 = 0xffff;
}

void Port_IO_Init()
{
// P0.0  -  Unassigned,  Open-Drain, Digital
// P0.1  -  Unassigned,  Open-Drain, Digital
// P0.2  -  Unassigned,  Open-Drain, Digital
// P0.3  -  Unassigned,  Open-Drain, Digital
// P0.4  -  Unassigned,  Open-Drain, Digital
// P0.5  -  Unassigned,  Open-Drain, Digital
// P0.6  -  Unassigned,  Open-Drain, Digital
// P0.7  -  Unassigned,  Open-Drain, Digital

// P1.0  -  Unassigned,  Open-Drain, Digital
// P1.1  -  Unassigned,  Open-Drain, Digital
// P1.2  -  Unassigned,  Open-Drain, Digital
// P1.3  -  Unassigned,  Open-Drain, Digital
// P1.4  -  Unassigned,  Open-Drain, Digital
// P1.5  -  Unassigned,  Open-Drain, Digital
// P1.6  -  Unassigned,  Open-Drain, Digital
// P1.7  -  Unassigned,  Open-Drain, Digital

// P2.0  -  Unassigned,  Open-Drain, Digital
// P2.1  -  Unassigned,  Open-Drain, Digital
// P2.2  -  Unassigned,  Open-Drain, Digital
// P2.3  -  Unassigned,  Open-Drain, Digital
// P2.4  -  Unassigned,  Push-Pull,  Digital
// P2.5  -  Unassigned,  Open-Drain, Digital
// P2.6  -  Unassigned,  Open-Drain, Digital
// P2.7  -  Unassigned,  Open-Drain, Digital

// P3.0  -  Unassigned,  Open-Drain, Digital
// P3.1  -  Unassigned,  Open-Drain, Digital
// P3.2  -  Unassigned,  Open-Drain, Digital
// P3.3  -  Unassigned,  Open-Drain, Digital
// P3.4  -  Unassigned,  Open-Drain, Digital
// P3.5  -  Unassigned,  Open-Drain, Digital
// P3.6  -  Unassigned,  Open-Drain, Digital
// P3.7  -  Unassigned,  Open-Drain, Digital

P2MDOUT = 0x10;
XBR1    = 0x40;
}

void Oscillator_Init()
{
OSCICN = 0x83;
}

// Initialization function for device,
// Call Init_Device() from your main program
void Init_Device(void)
{
PCA_Init();
Timer_Init();
Port_IO_Init();
Oscillator_Init();
}

sbit D3=P2^4;
void main()
{

   Init_Device();
   TR2=1;
   while(1)
      {
      while(TF2H==0);
      TF2H=0;

          D3=~D3;
}
}