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菜鸟

2014-12-24 18:18:29 打赏

11楼

#include "stm32f10x.h"   
#include "stm32_eval.h"   
#include    
#define VREF 3.3   
GPIO_InitTypeDef   GPIO_InitStructure;   
USART_InitTypeDef USART_InitStructure;   
USART_ClockInitTypeDef USART_ClockInitStructure;   
  
void delay_us(u32 n)     
{     
    u8 j;     
    while(n--)     
   for(j=0;j<10;j++);     
}     
void  delay_ms(u32 n)     
{     
   while(n--)     
   delay_us(1000);     
}     
void RCC_Configuration(void)   
{   
    SystemInit();   
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD|RCC_APB2Periph_AFIO, ENABLE);   
 GPIO_PinRemapConfig(GPIO_Remap_SWJ_JTAGDisable,ENABLE);//disable JTAG   
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD|RCC_APB2Periph_AFIO, ENABLE);   
 GPIO_PinRemapConfig(GPIO_Remap_SWJ_JTAGDisable,ENABLE);//disable JTAG   
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2;   
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;   
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;   
 GPIO_Init(GPIOD, &GPIO_InitStructure);   
    GPIO_ResetBits(GPIOD,GPIO_Pin_2);   
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC|RCC_APB2Periph_AFIO, ENABLE);   
 GPIO_PinRemapConfig(GPIO_Remap_SWJ_JTAGDisable,ENABLE);//disable JTAG   
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0|GPIO_Pin_1|GPIO_Pin_2|GPIO_Pin_3|GPIO_Pin_4|GPIO_Pin_5|GPIO_Pin_6|GPIO_Pin_7;   
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;   
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;   
  GPIO_Init(GPIOC, &GPIO_InitStructure);   
    GPIO_SetBits(GPIOC,GPIO_Pin_0|GPIO_Pin_1|GPIO_Pin_2|GPIO_Pin_3|GPIO_Pin_4|GPIO_Pin_5|GPIO_Pin_6|GPIO_Pin_7);   
      RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);   
}    
  
void USART_int(long BaudRate)   
{   
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA|RCC_APB2Periph_USART1,ENABLE);   
       GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;   
   GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;   
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;    
   GPIO_Init(GPIOA, &GPIO_InitStructure);   
    /* PA10 USART1_Rx  */  
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;   
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;   
    GPIO_Init(GPIOA, &GPIO_InitStructure);   
 
  USART_InitStructure.USART_BaudRate = BaudRate;//??????   
  USART_InitStructure.USART_WordLength = USART_WordLength_8b;//???????8bit   
  USART_InitStructure.USART_StopBits = USART_StopBits_1;//????1   
  USART_InitStructure.USART_Parity = USART_Parity_No;//????   
  USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;//??????none   
  USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;//??????????   
   USART_ClockInitStructure.USART_Clock = USART_Clock_Disable;        
   USART_ClockInitStructure.USART_CPOL = USART_CPOL_Low;         
   USART_ClockInitStructure.USART_CPHA = USART_CPHA_2Edge;         
   USART_ClockInitStructure.USART_LastBit = USART_LastBit_Disable;   
   USART_ClockInit(USART1, &USART_ClockInitStructure);   
  USART_Init(USART1, &USART_InitStructure);   
  USART_Cmd(USART1, ENABLE);   
    USART_ITConfig(USART1, USART_IT_RXNE, ENABLE);   
 USART_Cmd(USART1, ENABLE);   
}   
  
void PWM_Config()   
{uint16_t PrescalerValue = 0;//预分频器值   
    TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;   
TIM_OCInitTypeDef  TIM_OCInitStructure;   
    /* TIM2 clock enable */  
  RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);   
  /* GPIOA  enable */  
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO  , ENABLE);//使能复用功能时钟   
       
       GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1|GPIO_Pin_2|GPIO_Pin_3;   
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;//复用推挽输出   
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;   
  GPIO_Init(GPIOA, &GPIO_InitStructure);   

       TIM_Cmd(TIM2, ENABLE);//TIM2使能   
     /* Compute the prescaler value */  
  PrescalerValue = (uint16_t) (SystemCoreClock / 24000000) - 1;   
  /* Time base configuration */  
  TIM_TimeBaseStructure.TIM_Period = 0x07FF;//设置自动重装载   
  TIM_TimeBaseStructure.TIM_Prescaler = PrescalerValue;//设置预分频值   
 TIM_TimeBaseStructure.TIM_ClockDivision = 0;//设置时钟分割TDTS=Tck_tim   
  TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;//向上计数   
  TIM_TimeBaseInit(TIM2, &TIM_TimeBaseStructure);//根据指定参数初始化TIMx   
  TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;//选择PWM模式1   
  TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;//输出极性高   
  /* PWM1 Mode configuration: Channel2 */  
  TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;   
  TIM_OCInitStructure.TIM_Pulse = 0xFFFF;//通道占空比时间   
  TIM_OC2Init(TIM2, &TIM_OCInitStructure);//初始化TIM2 OC2   
    /* PWM1 Mode configuration: Channel3 */  
  TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;//比较输出使能   
  TIM_OCInitStructure.TIM_Pulse = 0xFFFF;//通道占空比时间   
  TIM_OC3Init(TIM2, &TIM_OCInitStructure);//初始化TIM2 OC3   
    /* PWM1 Mode configuration: Channel4 */  
  TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;   
  TIM_OCInitStructure.TIM_Pulse = 0xFFFF;//通道占空比时间   
  TIM_OC4Init(TIM2, &TIM_OCInitStructure);//初始化TIM2 OC4   
       
  TIM_ARRPreloadConfig(TIM2, ENABLE);//使能预装载寄存器   
}   
  
void PWM_TEST()   
{ unsigned int temp0,temp1,temp2;   
    printf("PWM-RGB TEST......\r\n");   
   while(1)   
    {   
  if(temp0=500,temp1=0,temp2=2047)   
           {TIM_SetCompare2(TIM2,temp0);delay_ms(400);    
      TIM_SetCompare3(TIM2,temp1);delay_ms(400);         
       TIM_SetCompare4(TIM2,temp2);delay_ms(400);   
      }   
    if(temp0=1500,temp1=0,temp2=0)   
          {TIM_SetCompare2(TIM2,temp0);delay_ms(400);    
       TIM_SetCompare3(TIM2,temp1);delay_ms(400);         
       TIM_SetCompare4(TIM2,temp2);delay_ms(400);   
         }   
    if(temp0=1760,temp1=380,temp2=0)   
             {TIM_SetCompare2(TIM2,temp0);delay_ms(400);    
       TIM_SetCompare3(TIM2,temp1);delay_ms(400);         
      TIM_SetCompare4(TIM2,temp2);delay_ms(400);   
            }   
    if(temp0=970,temp1=2047,temp2=0)   
             {TIM_SetCompare2(TIM2,temp0);delay_ms(400);    
      TIM_SetCompare3(TIM2,temp1);delay_ms(400);         
       TIM_SetCompare4(TIM2,temp2);delay_ms(400);   
            }              
  if(temp0=500,temp1=250,temp2=1750)   
            {TIM_SetCompare2(TIM2,temp0);delay_ms(400);    
       TIM_SetCompare3(TIM2,temp1);delay_ms(400);         
       TIM_SetCompare4(TIM2,temp2);delay_ms(400);   
            }                                      
    if(temp0=500,temp1=1500,temp2=1000)   
             {TIM_SetCompare2(TIM2,temp0);delay_ms(400);    
       TIM_SetCompare3(TIM2,temp1);delay_ms(400);         
       TIM_SetCompare4(TIM2,temp2);delay_ms(400);   
           }   
 if(temp0=1250,temp1=750,temp2=1250)            
           {TIM_SetCompare2(TIM2,temp0);delay_ms(400);    
       TIM_SetCompare3(TIM2,temp1);delay_ms(400);         
       TIM_SetCompare4(TIM2,temp2);delay_ms(400);   
        }   
}   
int main(void)   
{      
  RCC_Configuration();   
USART_int(115200);   
    printf(" config done...\r\n");   
    PWM_Config();   
    delay_ms(1000);   
    while(1)   
{   
       PWM_TEST();   
    }   
}   
#ifdef  USE_FULL_ASSERT   
void assert_failed(uint8_t* file, uint32_t line)   
{while (1)   
  {   
  }   
}   
#endif   
  
#ifdef __GNUC__   
  #define PUTCHAR_PROTOTYPE int __io_putchar(int ch)   
#else   
  #define PUTCHAR_PROTOTYPE int fputc(int ch, FILE *f)   
#endif /* __GNUC__ */   
PUTCHAR_PROTOTYPE   
{   
USART_SendData(EVAL_COM1, (uint8_t) ch);   
void assert_failed(uint8_t* file, uint32_t line)   
{    
  while (1)   
 {   
  }   
}   
#endif

123yanfang35

菜鸟

2014-12-25 14:02:58 打赏

12楼

#include "stm32f10x.h"   
27.#include "stm32_eval.h"   
28.#include "delay.h"   
29.#include    
30.volatile int flag;   
31.#define Set_B20()    GPIO_SetBits(GPIOC, GPIO_Pin_12)      //上拉关闭PC12   
32.#define Reset_B20()  GPIO_ResetBits(GPIOC, GPIO_Pin_12)  //下拉打开PC12   
33.#define Read_B20()   GPIO_ReadInputDataBit(GPIOC,GPIO_Pin_12)  //读PC12状态   
34.unsigned char Error_Flag=0;   
35.unsigned char zf=0;   
36.void SysTick_Configuration(void)   
37.{   
38.  /* Setup SysTick Timer for 10 msec interrupts  */  
39.  if (SysTick_Config(48000))                //SysTick配置   
40.  {    
41.    /* Capture error */    
42.    while (1);   
43.  }     
44. /* Configure the SysTick handler priority */  
45.  NVIC_SetPriority(SysTick_IRQn, 0x0);                       //SysTick中断优先级   
46.}   
47.  
48.  
49./** @addtogroup STM32F10x_StdPeriph_Examples  
50.  * @{  
51.  */  
52.  
53./** @addtogroup EXTI_Config  
54.  * @{  
55.  */    
56.  
57./* Private typedef -----------------------------------------------------------*/  
58./* Private define ------------------------------------------------------------*/  
59./* Private macro -------------------------------------------------------------*/  
60./* Private variables ---------------------------------------------------------*/  
61.GPIO_InitTypeDef   GPIO_InitStructure;   
62.USART_InitTypeDef USART_InitStructure;   
63.USART_ClockInitTypeDef USART_ClockInitStructure;   
64.  
65.void RCC_Configuration(void)   
66.{   
67.  RCC_DeInit();                 //将外设RCC重新设为缺省值     
68.       
69.  RCC_HSICmd(ENABLE);            //使能内部高速晶振     
70.  while(RCC_GetFlagStatus(RCC_FLAG_HSIRDY) == RESET);      //当SHI晶振就绪则重新设定    
71.     
72.  RCC_SYSCLKConfig(RCC_SYSCLKSource_HSI);      //设置系统时钟，选择SHI时钟为系统时钟   
73.     
74.  RCC_HSEConfig(RCC_HSE_OFF);     //设置外部高速晶振，HSE晶振OFF    
75.  RCC_LSEConfig(RCC_LSE_OFF);      //设置外部低速晶振，LSE晶振OFF     
76.       
77.    //******配置PLL时钟频率为48MHZ*******//   
78.       
79.  RCC_PLLConfig(RCC_PLLSource_HSI_Div2,RCC_PLLMul_8);    //RCC_PLLMul_x 即设置PLL时钟频率为 6*x MHz   
80.       
81.  //************************************//     
82.       
83.  RCC_PLLCmd(ENABLE);             ////*******************使能PLL    
84.  while(RCC_GetFlagStatus(RCC_FLAG_PLLRDY) == RESET);        //PLL就绪     
85.  RCC_ADCCLKConfig(RCC_PCLK2_Div4);                     //  ADC时钟=PCLK/2     
86.  RCC_PCLK2Config(RCC_HCLK_Div1);                       //  APB2时钟=HCLK    
87.  RCC_PCLK1Config(RCC_HCLK_Div2);            /// APB1时钟=HCLK/2     
88.  RCC_HCLKConfig(RCC_SYSCLK_Div1);         //  AHB时钟=系统时钟    
89.  RCC_SYSCLKConfig(RCC_SYSCLKSource_PLLCLK);       // 选择PLL为系统时钟     
90.  while(RCC_GetSYSCLKSource() != 0x08);        //当PLL不是系统时钟    
91.  
92.       
93.//  SystemInit();   
94.       
95.    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD|RCC_APB2Periph_AFIO, ENABLE); //使能APB2外设时钟/****GPIOD时钟和功能复用IO时钟***/     
96. GPIO_PinRemapConfig(GPIO_Remap_SWJ_JTAGDisable,ENABLE);//disable JTAG    SW_DP使能     
97.RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD|RCC_APB2Periph_AFIO, ENABLE);   
98. GPIO_PinRemapConfig(GPIO_Remap_SWJ_JTAGDisable,ENABLE);//disable JTAG   
99.  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2;         // //选择设置GPIO管脚    
100.  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;  ////设置管脚速率     
101.  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;     ////设置管脚工作状态，此为推挽输出     
102.  GPIO_Init(GPIOD, &GPIO_InitStructure);    //初始化GPIOD    
103.    GPIO_ResetBits(GPIOD,GPIO_Pin_2);     //上拉关闭蜂鸣器     
104.    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC|RCC_APB2Periph_AFIO, ENABLE);   
105. GPIO_PinRemapConfig(GPIO_Remap_SWJ_JTAGDisable,ENABLE);//disable JTAG   
106.  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0|GPIO_Pin_1|GPIO_Pin_2|GPIO_Pin_3|GPIO_Pin_4|GPIO_Pin_5|GPIO_Pin_6|GPIO_Pin_7;//LED   
107.  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;   
108.  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;   
109.  GPIO_Init(GPIOC, &GPIO_InitStructure);   
110.    GPIO_SetBits(GPIOC,GPIO_Pin_0|GPIO_Pin_1|GPIO_Pin_2|GPIO_Pin_3|GPIO_Pin_4|GPIO_Pin_5|GPIO_Pin_6|GPIO_Pin_7);   
111.      RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE); //使能TIM2时钟   
112.}    
113.  
114.void USART_int(long BaudRate)   
115.{   
116.    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA|RCC_APB2Periph_USART1,ENABLE);//使能GPIOA、USART1外设时钟   
117.       GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;   
118.    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;   
119.    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;    
120.    GPIO_Init(GPIOA, &GPIO_InitStructure);   
121.    /* PA10 USART1_Rx  */  
122.    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;   
123.    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;   
124.    GPIO_Init(GPIOA, &GPIO_InitStructure);   
125.  /* USARTx configured as follow:  
126.        - BaudRate = 115200 baud    
127.        - Word Length = 8 Bits  
128.        - One Stop Bit  
129.        - No parity  
130.        - Hardware flow control disabled (RTS and CTS signals)  
131.        - Receive and transmit enabled  
132.  */  
133.  USART_InitStructure.USART_BaudRate = BaudRate;//设置USART传输波特率  BaudRate = 9600 可以直接写9600   
134.  USART_InitStructure.USART_WordLength = USART_WordLength_8b;//一帧传输或者接收的数据位数为8bit   
135.  USART_InitStructure.USART_StopBits = USART_StopBits_1;//在帧结尾传输一个停止位   
136.  USART_InitStructure.USART_Parity = USART_Parity_No;//奇偶模式失能   
137.  USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;//硬件流控制失能   
138.  USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;//使能接收发模式   
139.    USART_ClockInitStructure.USART_Clock = USART_Clock_Disable;    //时钟低电平活动   
140.    USART_ClockInitStructure.USART_CPOL = USART_CPOL_Low;      //引脚时钟输出低电平时钟   
141.    USART_ClockInitStructure.USART_CPHA = USART_CPHA_2Edge;     //第二个时钟边沿开始捕获数据   
142.    USART_ClockInitStructure.USART_LastBit = USART_LastBit_Disable;//最后一位数据的时钟脉冲不从SCLK输出   
143.    USART_ClockInit(USART1, &USART_ClockInitStructure);   
144.  USART_Init(USART1, &USART_InitStructure);//USART1初始化   
145.  USART_Cmd(USART1, ENABLE);//使能USART1时钟外设   
146.    USART_ITConfig(USART1, USART_IT_RXNE, ENABLE);//使能接受中断   
147. USART_Cmd(USART1, ENABLE);   
148.}   
149.  
150.void delay_18b20(u32 nus)    //18b20按照严格的时序工作，这是专属延时   
151.{   
152.    u16 i;   
153.    while(nus--)   
154.        for(i=12;i>0;i--);   
155.}   
156.  
157.  
158.       
159.void Init18B20(void)  //18B20初始化   
160.{   
161.   u8 aa=0;   
162.   u8 count =0;   
163.    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC, ENABLE);//使能PC时钟   
164.  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12;   
165.  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_OD;//开漏输出   
166.  GPIO_Init(GPIOC, &GPIO_InitStructure);   
167.   Set_B20() ;   // GPIO_SetBits(GPIOC, GPIO_Pin_12)    
168.   delay_18b20(1);   
169.   Reset_B20();   
170.  
171.   delay_18b20(480);   
172.   Set_B20();   
173.//  delay_18b20(500);   
174.   delay_18b20(480);   
175.  
176.    count=0;   
177.    aa=Read_B20();         //温度读取   
178.    /****个人认为限制温度不超过99度，作为一个保护*/  
179.    while(!aa && count<100)      
180.   {   
181.    aa=Read_B20();   
182.    count++;          //相当一个for（）和while结合   
183.   }   
184.   if(count>=99)   
185.        Error_Flag=1;   
186.    else  
187.        Error_Flag=0;   
188.      
189.}   
190.     
191.unsigned char Read18B20(void)//按位读取数据   
192.{     
193.unsigned char i=0;   
194.unsigned char date=0;   
195.u8 tempp;   
196.   for(i=8;i>0;i--)   
197.   {   
198.  
199.   Reset_B20();   //打开PC12   
200.   date>>=1;    //标志右移一位   
201.   delay_18b20(1);   
202.   Set_B20();    //关闭   
203.    delay_18b20(1);   
204.   tempp=Read_B20();   //读取温度   
205.  
206.   if(tempp)   
207.        date|=0x80;     // 1000 0000   将最高位填1 ，然后右移，每次最高位由0变1，使8位全部传递完毕 0xff = 1111 1111   
208.    delay_18b20(60);   
209.    }   
210.    return(date);   
211.}   
212.void Write18B20(unsigned char date)//写数据   
213.{   
214.    unsigned char i=0;   
215.  
216.    for (i=8; i>0; i--)   
217.    {   
218.        Reset_B20();    
219.        delay_18b20(1);            
220.        if(date & 0x01)            
221.        {      
222.            Set_B20();   
223.        }   
224.        else  
225.        {   Reset_B20();}   
226.        delay_18b20(60);   
227.        date>>=1;         
228.         Set_B20();   
229.         delay_18b20(1);   
230.               
231.    }   
232.    delay_18b20(15);   
233.}   
234.  
235. float Read_T()//读温度   
236.{      
237.        unsigned char TUp,TDown;   
238.    unsigned char fTemp;   
239.    u8 TT=0;   
240.  
241.     float Temp = 0;   
242.    Init18B20();   
243.    Write18B20(0xcc);        
244.    Write18B20(0x44);       
245.    Init18B20();   
246.    Write18B20(0xcc);      
247.    Write18B20(0xbe);      
248.    TDown = Read18B20();       
249.    TUp = Read18B20();         
250.       
251.    if(TUp>0x7f)         
252.    {   
253.        TDown=~TDown;     
254.        TUp=~TUp+1;    
255.        TUp/=8;             
256.        zf=1;            
257.    }   
258.    else  
259.        zf=0;        
260.  
261.    fTemp=TDown&0x0f;          
262.    TUp<<=4;   
263.    TDown>>=4;   
264.    TT=TUp|TDown;   
265.    Temp=TT+(float)fTemp/16;           
266.    return(Temp);   
267.}   
268.                                    
269.int main(void)   
270.{   
271.           
272.  /*!< At this stage the microcontroller clock setting is already configured,   
273.       this is done through SystemInit() function which is called from startup  
274.       file (startup_stm32f10x_xx.s) before to branch to application main.  
275.       To reconfigure the default setting of SystemInit() function, refer to  
276.       system_stm32f10x.c file  
277.     */        
278.          
279.  /* System Clocks Configuration */  
280.    char ID[8];   
281.    int i;   
282.  RCC_Configuration();   
283.  USART_int(115200);   
284.    SysTick_Configuration();   
285.    printf(" config done...\r\n");   
286.  delay_ms(1000);   
287.       
288.    Init18B20();     //初始化   
289.    Write18B20(0x33);  //写入读取地址的命令   
290.    delay_18b20(20);   
291.    for(i=0;i<8;i++)   //这里必须用for不然 只会输出printf("event 1 oc......\r\n")这句，不会继续运行   
292.    {   
293.        ID[i] = Read18B20();//读取地址   
294.    }   
295.       
296.    while(1)   
297.    {   
298.        if(flag == 300)   
299.        {   
300.            printf("At the moment of ID is:")   ;    
301.            for(i=0;i<8;i++)     //字符不能直接输出，要按位输出   
302.        {   
303.          printf("%u",ID[i]);//输出地址   
304.        }   
305.            printf("\r\n")  ;   
306.        }   
307.        if(flag == 500)   
308.        {              
309.            printf("The Temperature is:%f\r\n",Read_T());//读取温度并输出   
310.            printf("===================================================\r\n");   
311.    }   
312.    }   
313.}   
314.  
315.  
316.  
317.#ifdef  USE_FULL_ASSERT   
318.  
319./**  
320.  * @brief  Reports the name of the source file and the source line number  
321.  *         where the assert_param error has occurred.  
322.  * @param  file: pointer to the source file name  
323.  * @param  line: assert_param error line source number  
324.  * @retval None  
325.  */  
326.void assert_failed(uint8_t* file, uint32_t line)   
327.{    
328.  /* User can add his own implementation to report the file name and line number,  
329.     ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */  
330.  
331.  /* Infinite loop */  
332.  while (1)   
333.  {   
334.  }   
335.}   
336.  
337.#endif   
338.  
339./**  
340.  * @}  
341.  */    
342.  
343./**  
344.  * @}  
345.  */    
346.  
347.#ifdef __GNUC__   
348.  /* With GCC/RAISONANCE, small printf (option LD Linker->Libraries->Small printf  
349.     set to 'Yes') calls __io_putchar() */  
350.  #define PUTCHAR_PROTOTYPE int __io_putchar(int ch)   
351.#else   
352.  #define PUTCHAR_PROTOTYPE int fputc(int ch, FILE *f)   
353.#endif /* __GNUC__ */   
354.     
355.  
356.  
357./**  
358.  * @brief  Retargets the C library printf function to the USART.  
359.  * @param  None  
360.  * @retval None  
361.  */  
362.PUTCHAR_PROTOTYPE   
363.{   
364.  /* Place your implementation of fputc here */  
365.  /* e.g. write a character to the USART */  
366.  USART_SendData(EVAL_COM1, (uint8_t) ch);   
367.  
368.  /* Loop until the end of transmission */  
369.  while (USART_GetFlagStatus(EVAL_COM1, USART_FLAG_TC) == RESET)   
370.  {}   
371.  
372.  return ch;   
373.}   
374.  
375.#ifdef  USE_FULL_ASSERT   
376.  
377./**  
378.  * @brief  Reports the name of the source file and the source line number  
379.  *         where the assert_param error has occurred.  
380.  * @param  file: pointer to the source file name  
381.  * @param  line: assert_param error line source number  
382.  * @retval None  
383.  */  
384.void assert_failed(uint8_t* file, uint32_t line)   
385.{    
386.  /* User can add his own implementation to report the file name and line number,  
387.     ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */  
388.  
389.  /* Infinite loop */  
390.  while (1)   
391.  {   
392.  }   
393.}   
394.  
395.#endif   
396.

123yanfang35

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2014-12-25 19:52:07 打赏

13楼

/** 
  ****************************************************************************** 
  * @file    EXTI/EXTI_Config/main.c  
  * @author  MCD Application Team 
  * @version V3.5.0 
  * @date    08-April-2011 
  * @brief   Main program body 
  ****************************************************************************** 
  * @attention 
  * 
  * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS 
  * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE 
  * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY 
  * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING 
  * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE 
  * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS. 
  * 
  * <h2><center>&copy; COPYRIGHT 2011 STMicroelectronics</center></h2> 
  ****************************************************************************** 
  */   
  
/* Includes ------------------------------------------------------------------*/  
#include <stm32f10x.h> 
#include "stm32_eval.h"  
#include "delay.h"
#include <stdio.h>  
#include "spi_flash.h"  
#define VREF 3.3  
  
#define TxBufferSize1   (countof(TxBuffer1) - 1)  
#define RxBufferSize1   (countof(TxBuffer1) - 1)  
#define countof(a)      (sizeof(a) / sizeof(*(a)))  
#define  BufferSize (countof(Tx_Buffer)-1)  
typedef enum { FAILED = 0, PASSED = !FAILED} TestStatus;  
#define  FLASH_WriteAddress     0x00000  
#define  FLASH_ReadAddress      FLASH_WriteAddress  
#define  FLASH_SectorToErase    FLASH_WriteAddress  
#define  sFLASH_ID              0xEF3015     //W25X16  
//#define  sFLASH_ID              0xEF4015   //W25Q16  
#define buff_size  16;       
char rx_buff_count=0;  
/* ???????? */  
uint8_t Tx_Buffer[4096] ;  //发送缓冲
uint8_t Rx_Buffer[BufferSize];  //接受缓冲
__IO uint32_t DeviceID = 0;  //装置ID
__IO uint32_t FlashID = 0; //闪存ID 
__IO TestStatus TransferStatus1 = FAILED;  //状态测试
  
// ??????  
void Delay(__IO uint32_t nCount);  
TestStatus Buffercmp(uint8_t* pBuffer1, uint8_t* pBuffer2, uint16_t BufferLength);  
  
/** @addtogroup STM32F10x_StdPeriph_Examples 
  * @{ 
  */  
  
/** @addtogroup EXTI_Config 
  * @{ 
  */   
  
/* Private typedef -----------------------------------------------------------*/  
/* Private define ------------------------------------------------------------*/  
/* Private macro -------------------------------------------------------------*/  
/* Private variables ---------------------------------------------------------*/  
GPIO_InitTypeDef   GPIO_InitStructure;  
USART_InitTypeDef USART_InitStructure;  
USART_ClockInitTypeDef USART_ClockInitStructure;  
  
char *int_to_string(int number,char *strnum)//整形数据转换为字符型  
{  
int j=0,i=0,n=0;  
char temp;  
while(number>0)  
{  
*(strnum+j)=number%10+48;  
j++;  
number=number/10;  
n++;  
}  
  
      
for(i=0;i<n/2;i++)  
{  
temp=*(strnum+j+i-n);  
*(strnum+j+i-n)=*(strnum+j-i-1);  
*(strnum+j-i-1)=temp;  
}  
strnum[n]='\0';  
return strnum;  
}  
  
void RCC_Configuration(void)  
{  
  RCC_DeInit();  
      
  RCC_HSICmd(ENABLE);  //使能HSI
  while(RCC_GetFlagStatus(RCC_FLAG_HSIRDY) == RESET);  
    
  RCC_SYSCLKConfig(RCC_SYSCLKSource_HSI);  
    
  RCC_HSEConfig(RCC_HSE_OFF);  
  RCC_LSEConfig(RCC_LSE_OFF);  
  RCC_PLLConfig(RCC_PLLSource_HSI_Div2,RCC_PLLMul_9); //  72HMz  
  RCC_PLLCmd(ENABLE);  
  while(RCC_GetFlagStatus(RCC_FLAG_PLLRDY) == RESET);  
  RCC_ADCCLKConfig(RCC_PCLK2_Div4);  
  RCC_PCLK2Config(RCC_HCLK_Div1);  
  RCC_PCLK1Config(RCC_HCLK_Div2);  
  RCC_HCLKConfig(RCC_SYSCLK_Div1);  
  RCC_SYSCLKConfig(RCC_SYSCLKSource_PLLCLK);  
  while(RCC_GetSYSCLKSource() != 0x08)
  
      
    //SystemInit();  
      
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD|RCC_APB2Periph_AFIO, ENABLE);  
 GPIO_PinRemapConfig(GPIO_Remap_SWJ_JTAGDisable,ENABLE);//disable JTAG  
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD|RCC_APB2Periph_AFIO, ENABLE);  
 GPIO_PinRemapConfig(GPIO_Remap_SWJ_JTAGDisable,ENABLE);//disable JTAG  
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2;  
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;  
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;  
  GPIO_Init(GPIOD, &GPIO_InitStructure);  
    GPIO_ResetBits(GPIOD,GPIO_Pin_2);  
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC|RCC_APB2Periph_AFIO, ENABLE);  
 GPIO_PinRemapConfig(GPIO_Remap_SWJ_JTAGDisable,ENABLE);//disable JTAG  
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0|GPIO_Pin_1|GPIO_Pin_2|GPIO_Pin_3|GPIO_Pin_4|GPIO_Pin_5|GPIO_Pin_6|GPIO_Pin_7;  
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;  
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;  
  GPIO_Init(GPIOC, &GPIO_InitStructure);  
    GPIO_SetBits(GPIOC,GPIO_Pin_0|GPIO_Pin_1|GPIO_Pin_2|GPIO_Pin_3|GPIO_Pin_4|GPIO_Pin_5|GPIO_Pin_6|GPIO_Pin_7);  
      RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);  
}   
  
void USART_int(long BaudRate)  
{  
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA|RCC_APB2Periph_USART1,ENABLE);  
       GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;  
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;  
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;   
    GPIO_Init(GPIOA, &GPIO_InitStructure);  
    /* PA10 USART1_Rx  */  
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;  
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;  
    GPIO_Init(GPIOA, &GPIO_InitStructure);  
  /* USARTx configured as follow: 
        - BaudRate = 115200 baud   
        - Word Length = 8 Bits 
        - One Stop Bit 
        - No parity 
        - Hardware flow control disabled (RTS and CTS signals) 
        - Receive and transmit enabled 
  */  
  USART_InitStructure.USART_BaudRate = BaudRate;//??????  
  USART_InitStructure.USART_WordLength = USART_WordLength_8b;//???????8bit  
  USART_InitStructure.USART_StopBits = USART_StopBits_1;//????1  
  USART_InitStructure.USART_Parity = USART_Parity_No;//????  
  USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;//??????none  
  USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;//??????????  
    USART_ClockInitStructure.USART_Clock = USART_Clock_Disable;       
    USART_ClockInitStructure.USART_CPOL = USART_CPOL_Low;        
    USART_ClockInitStructure.USART_CPHA = USART_CPHA_2Edge;        
    USART_ClockInitStructure.USART_LastBit = USART_LastBit_Disable;  
    USART_ClockInit(USART1, &USART_ClockInitStructure);  
  USART_Init(USART1, &USART_InitStructure);  
  USART_Cmd(USART1, ENABLE);  
    USART_ITConfig(USART1, USART_IT_RXNE, ENABLE);  
 USART_Cmd(USART1, ENABLE);  
}  
  
TestStatus Buffercmp(uint8_t* pBuffer1, uint8_t* pBuffer2, uint16_t BufferLength)  
{  
  while(BufferLength--)  
  {  
    if(*pBuffer1 != *pBuffer2)  
    {  
      return FAILED;  
    }  
  
    pBuffer1++;  
    pBuffer2++;  
  }  
  return PASSED;  
}  
  
void Delay(__IO uint32_t nCount)  
{  
  for(; nCount != 0; nCount--);  
}  
  
void ADC_CONFIG(){  
    ADC_InitTypeDef ADC_InitStructure;  
    #if defined (STM32F10X_LD_VL) || defined (STM32F10X_MD_VL) || defined (STM32F10X_HD_VL)  
  /* ADCCLK = PCLK2/2 */  
  RCC_ADCCLKConfig(RCC_PCLK2_Div2);   
#else  
  /* ADCCLK = PCLK2/4 */  
  RCC_ADCCLKConfig(RCC_PCLK2_Div4);   
#endif  
ADC_DeInit(ADC1);  
  /* Enable ADC1 and GPIOC clock */  
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1 | RCC_APB2Periph_GPIOB, ENABLE);  
      
    /* Configure PB0 (ADC Channel14) as analog input -------------------------*/  
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0;  
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;  
  GPIO_Init(GPIOB, &GPIO_InitStructure);  
      
    
  /* ADC1 configuration ------------------------------------------------------*/  
  ADC_InitStructure.ADC_Mode = ADC_Mode_Independent;  
  ADC_InitStructure.ADC_ScanConvMode = ENABLE;  
  ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;  
  ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None;  
  ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;  
  ADC_InitStructure.ADC_NbrOfChannel = 1;  
  ADC_Init(ADC1, &ADC_InitStructure);  
  
  
  /* Enable ADC1 DMA */  
  ADC_DMACmd(ADC1, ENABLE);  
    
  /* Enable ADC1 */  
  ADC_Cmd(ADC1, ENABLE);  
  
}  
  
int Get_ADC(){  
     /* ADC1 regular channel configuration */   
  ADC_RegularChannelConfig(ADC1, ADC_Channel_8, 1, ADC_SampleTime_55Cycles5);  
    /* Enable ADC1 reset calibration register */     
  ADC_ResetCalibration(ADC1);  
  /* Check the end of ADC1 reset calibration register */  
  while(ADC_GetResetCalibrationStatus(ADC1));  
  
  /* Start ADC1 calibration */  
  ADC_StartCalibration(ADC1);  
  /* Check the end of ADC1 calibration */  
  while(ADC_GetCalibrationStatus(ADC1));  
       
  /* Start ADC1 Software Conversion */   
  ADC_SoftwareStartConvCmd(ADC1, ENABLE);  
      
    return ADC_GetConversionValue(ADC1);  
}  
  
  
void SPI_TEST()
{ 
	int i=0;      
	int ADValue = 0;  
	float Volt=0.00;
     char shuzu[100];
	 for(i=0;i<5;i++)  
        {   
					ADValue = Get_ADC();
		Volt = VREF*ADValue/4095;
		printf("===============================\r\n");
		printf("The ADC value is:%d\r\n",ADValue);
		printf("The Volt is:%f V\r\n",Volt);
			delay_ms(500);			 
		
    }  
	
	printf("\r\n这是一个2M SPI总线flash(W25X16)测试 \r\n");
	SPI_FLASH_Init();
	/* Get SPI Flash Device ID */
	DeviceID = SPI_FLASH_ReadDeviceID();
	Delay( 200 );
	/* Get SPI Flash ID */
	FlashID = SPI_FLASH_ReadID();
	printf("\r\n FlashID is 0x%X,  Manufacturer Device ID is 0x%X\r\n", FlashID, DeviceID);
	/* Check the SPI Flash ID */
	if (FlashID == sFLASH_ID)  /* #define  sFLASH_ID  0xEF3015 */
	{
		printf("\r\n 检测到华邦flash W25X16 !\r\n");
		/* Erase SPI FLASH Sector to write on */
		SPI_FLASH_SectorErase(FLASH_SectorToErase);	 	 
		
		/*写缓存并发送*/
		SPI_FLASH_BufferWrite(Tx_Buffer, FLASH_WriteAddress, BufferSize);
		printf("\r\n写入的数据是:%s \r\t", Tx_Buffer);
		
		/* 读出刚才写入的数据*/
		SPI_FLASH_BufferRead(Rx_Buffer, FLASH_ReadAddress, BufferSize);
		printf("\r\n读出的数据是:%s \r\n", Rx_Buffer);
		
		/* ????????????????? */
		TransferStatus1 = Buffercmp(Tx_Buffer, Rx_Buffer, BufferSize);
		
		if( PASSED == TransferStatus1 )
		{    
			printf("\r\n 2M SPI总线flash(W25X16)测试成功!\n\r");
		}
		else
		{        
			printf("\r\n 2M SPI总线flash(W25X16)测试失败!\n\r");
		}
	}// if (FlashID == sFLASH_ID)
	else
	{    
		printf("\r\n 未检测到 W25X16 ID!\n\r");
	}
	
	SPI_Flash_PowerDown();  
	printf("\r\n=================================================\n\r");
}  
/* Private functions ---------------------------------------------------------*/  
  
/** 
  * @brief  Main program. 
  * @param  None 
  * @retval None 
  */  
int main(void)  
{  
  
	      
  /*!< At this stage the microcontroller clock setting is already configured,  
       this is done through SystemInit() function which is called from startup 
       file (startup_stm32f10x_xx.s) before to branch to application main. 
       To reconfigure the default setting of SystemInit() function, refer to 
       system_stm32f10x.c file 
     */       
         
  /* System Clocks Configuration */  
      
  RCC_Configuration();  
  USART_int(115200);   
    ADC_CONFIG();  
	 printf(" config done...\r\n"); 
	 Get_ADC();
    delay_ms(1000);  
	    while(1)  
    {              
      SPI_TEST();  
        delay_ms(1000);  
    }  
}  
  
  
  
  
#ifdef  USE_FULL_ASSERT  
  
/** 
  * @brief  Reports the name of the source file and the source line number 
  *         where the assert_param error has occurred. 
  * @param  file: pointer to the source file name 
  * @param  line: assert_param error line source number 
  * @retval None 
  */  
void assert_failed(uint8_t* file, uint32_t line)  
{   
  /* User can add his own implementation to report the file name and line number, 
     ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */  
  
  /* Infinite loop */  
  while (1)  
  {  
  }  
}  
  
#endif  
  
/** 
  * @} 
  */   
  
/** 
  * @} 
  */   
  
#ifdef __GNUC__  
  /* With GCC/RAISONANCE, small printf (option LD Linker->Libraries->Small printf 
     set to 'Yes') calls __io_putchar() */  
  #define PUTCHAR_PROTOTYPE int __io_putchar(int ch)  
#else  
  #define PUTCHAR_PROTOTYPE int fputc(int ch, FILE *f)  
#endif /* __GNUC__ */  
    
  
  
/** 
  * @brief  Retargets the C library printf function to the USART. 
  * @param  None 
  * @retval None 
  */  
PUTCHAR_PROTOTYPE  
{  
  /* Place your implementation of fputc here */  
  /* e.g. write a character to the USART */  
  USART_SendData(EVAL_COM1, (uint8_t) ch);  
  
  /* Loop until the end of transmission */  
  while (USART_GetFlagStatus(EVAL_COM1, USART_FLAG_TC) == RESET)  
  {}  
  
  return ch;  
}  
  
#ifdef  USE_FULL_ASSERT  
  
/** 
  * @brief  Reports the name of the source file and the source line number 
  *         where the assert_param error has occurred. 
  * @param  file: pointer to the source file name 
  * @param  line: assert_param error line source number 
  * @retval None 
  */  
void assert_failed(uint8_t* file, uint32_t line)  
{   
  /* User can add his own implementation to report the file name and line number, 
     ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */  
  
  /* Infinite loop */  
  while (1)  
  {  
  }  
}  
  
#endif

123yanfang35

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2014-12-25 22:19:30 打赏

14楼

/**
  ******************************************************************************
  * @file    EXTI/EXTI_Config/main.c 
  * @author  MCD Application Team
  * @version V3.5.0
  * @date    08-April-2011
  * @brief   Main program body
  ******************************************************************************
  * @attention
  *
  * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
  * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
  * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY
  * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
  * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
  * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
  *
  *

	© COPYRIGHT 2011 STMicroelectronics

******************************************************************************
  */ 

/* Includes ------------------------------------------------------------------*/
#include "stm32f10x.h"
#include "stm32_eval.h"
#include "delay.h"
#include 
volatile int flag;
#define Set_B20()	 GPIO_SetBits(GPIOC, GPIO_Pin_12) //上拉关闭PC12 
#define Reset_B20()	 GPIO_ResetBits(GPIOC, GPIO_Pin_12)//下拉打开PC12 
#define Read_B20()	 GPIO_ReadInputDataBit(GPIOC,GPIO_Pin_12)//读PC12状态  
unsigned char Error_Flag=0;
unsigned char zf=0;
void SysTick_Configuration(void)
{
  /* Setup SysTick Timer for 10 msec interrupts  */
  if (SysTick_Config(48000))                //SysTick配置48000/48ms=1ms  
  { 
    /* Capture error */ 
    while (1);
  }  
 /* Configure the SysTick handler priority */
  NVIC_SetPriority(SysTick_IRQn, 0x0);                       //SysTick中断优先级
}


/** @addtogroup STM32F10x_StdPeriph_Examples
  * @{
  */

/** @addtogroup EXTI_Config
  * @{
  */ 

/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
GPIO_InitTypeDef   GPIO_InitStructure;
USART_InitTypeDef USART_InitStructure;
USART_ClockInitTypeDef USART_ClockInitStructure;

void RCC_Configuration(void)
{
  RCC_DeInit(); //将外设RCC重新设为默认值  
    
  RCC_HSICmd(ENABLE);//使能HSI高速内部时钟 8MHZ
  while(RCC_GetFlagStatus(RCC_FLAG_HSIRDY) == RESET);  //当SHI晶振就绪则重新设定   
  
  RCC_SYSCLKConfig(RCC_SYSCLKSource_HSI);//设置系统时钟，时钟源为HSI 
  
  RCC_HSEConfig(RCC_HSE_OFF);//设置外部高速晶振，HSE晶振OFF   
  RCC_LSEConfig(RCC_LSE_OFF); //设置外部低速晶振，LSE晶振OFF  
	   /******配置PLL时钟频率为48MHZ*******/  
  RCC_PLLConfig(RCC_PLLSource_HSI_Div2,RCC_PLLMul_6); //   RCC_PLLMul_ 即设置PLL时钟频率为 6*8 MHz  
	
  RCC_PLLCmd(ENABLE);//使能PLL 
  while(RCC_GetFlagStatus(RCC_FLAG_PLLRDY) == RESET);//PLL就绪 
  RCC_ADCCLKConfig(RCC_PCLK2_Div4);//  ADC时钟=PCLK/2
  RCC_PCLK2Config(RCC_HCLK_Div1);//  APB2时钟=HCLK 
  RCC_PCLK1Config(RCC_HCLK_Div2);// APB1时钟=HCLK/2 
  RCC_HCLKConfig(RCC_SYSCLK_Div1);//  AHB时钟=系统时钟
  RCC_SYSCLKConfig(RCC_SYSCLKSource_PLLCLK); // 选择PLL为系统时钟 
  while(RCC_GetSYSCLKSource() != 0x08);//当PLL不是系统时钟 

	
//	SystemInit();
	
	RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD|RCC_APB2Periph_AFIO, ENABLE);
 GPIO_PinRemapConfig(GPIO_Remap_SWJ_JTAGDisable,ENABLE);//disable JTAG
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD|RCC_APB2Periph_AFIO, ENABLE);
 GPIO_PinRemapConfig(GPIO_Remap_SWJ_JTAGDisable,ENABLE);//disable JTAG
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
  GPIO_Init(GPIOD, &GPIO_InitStructure);
	GPIO_ResetBits(GPIOD,GPIO_Pin_2);
	RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC|RCC_APB2Periph_AFIO, ENABLE);
 GPIO_PinRemapConfig(GPIO_Remap_SWJ_JTAGDisable,ENABLE);//disable JTAG
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0|GPIO_Pin_1|GPIO_Pin_2|GPIO_Pin_3|GPIO_Pin_4|GPIO_Pin_5|GPIO_Pin_6|GPIO_Pin_7;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
  GPIO_Init(GPIOC, &GPIO_InitStructure);
	GPIO_SetBits(GPIOC,GPIO_Pin_0|GPIO_Pin_1|GPIO_Pin_2|GPIO_Pin_3|GPIO_Pin_4|GPIO_Pin_5|GPIO_Pin_6|GPIO_Pin_7);
	  RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);//使能TIM2时钟  
} 

void USART_int(long BaudRate)
{
	RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA|RCC_APB2Periph_USART1,ENABLE);
       GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; 
    GPIO_Init(GPIOA, &GPIO_InitStructure);
    /* PA10 USART1_Rx  */
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
    GPIO_Init(GPIOA, &GPIO_InitStructure);
  /* USARTx configured as follow:
        - BaudRate = 115200 baud  
        - Word Length = 8 Bits
        - One Stop Bit
        - No parity
        - Hardware flow control disabled (RTS and CTS signals)
        - Receive and transmit enabled
  */
  USART_InitStructure.USART_BaudRate = BaudRate;//??????
  USART_InitStructure.USART_WordLength = USART_WordLength_8b;//???????8bit
  USART_InitStructure.USART_StopBits = USART_StopBits_1;//????1
  USART_InitStructure.USART_Parity = USART_Parity_No;//????
  USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;//??????none
  USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;//??????????
	USART_ClockInitStructure.USART_Clock = USART_Clock_Disable;     
    USART_ClockInitStructure.USART_CPOL = USART_CPOL_Low;      
    USART_ClockInitStructure.USART_CPHA = USART_CPHA_2Edge;      
    USART_ClockInitStructure.USART_LastBit = USART_LastBit_Disable;
    USART_ClockInit(USART1, &USART_ClockInitStructure);
  USART_Init(USART1, &USART_InitStructure);
  USART_Cmd(USART1, ENABLE);
	USART_ITConfig(USART1, USART_IT_RXNE, ENABLE);
 USART_Cmd(USART1, ENABLE);
}

void delay_18b20(u32 nus) //18b20按照严格的时序工作，专属延时  
{
	u16 i;
	while(nus--)
		for(i=12;i>0;i--);
}


	
void Init18B20(void)  //18B20初始化 
{
   u8 aa=0;
   u8 count =0;
	RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC, ENABLE);//使能PC时钟 
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12;//选择PC12
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_OD;//开漏输出  
  GPIO_Init(GPIOC, &GPIO_InitStructure);
   Set_B20() ; //拉高 
   delay_18b20(1);  //复位时需要至少480us的低电平,当18b20接收到此信号后会回发芯片一个存在脉冲  
   Reset_B20(); //拉低  
   delay_18b20(480);
   Set_B20();//拉高 
   delay_18b20(480);

	count=0;  //读取18B20的温度 赋值给aa  
	
	 /*   校验读取值，错误次数大于99才报错 */ 
	aa=Read_B20();
    while(!aa && count<100)	 
   {
   	aa=Read_B20();
	count++;
   }
   if(count>=99) //次数大于99次，那么报错，标志位为1  
   		Error_Flag=1;
	else
		Error_Flag=0;   //次数未达到99次，正常工作   
}
  
unsigned char Read18B20(void)//读取18B20的一个字节  
{  
unsigned char i=0;
unsigned char date=0;
u8 tempp;
   for(i=8;i>0;i--)//按位读取，读取一个字需要循环8次 
   {

   Reset_B20();//拉低电平，读数
   date>>=1;//右移一位 
   delay_18b20(1);
   Set_B20();  //拉高电平，关闭 
    delay_18b20(1);
   tempp=Read_B20();//读取温度值  

   if(tempp)//若读取到的值非0 
   		date|=0x80; //将date的最高位置1  1000 0000   然后右移，每次最高位由0变1，使8位全部传递完毕 0xff = 1111 1111
	delay_18b20(60);
	}
	return(date);
}
void Write18B20(unsigned char date)//写入数据  
{
	unsigned char i=0;

	for (i=8; i>0; i--)
	{
		Reset_B20(); //置低电平  
		delay_18b20(1); 		
		if(date & 0x01)			 //如果date最低位为1   
		{	
			Set_B20();//置高电平  
		}
		else
		{	Reset_B20();}
		delay_18b20(60);
		date>>=1; 	 //date右移一位  
		 Set_B20();//置高电平  
		 delay_18b20(1);			
	}
	delay_18b20(15);
}

 float Read_T()//读取温度值  
{	
		unsigned char TUp,TDown;
	unsigned char fTemp;
	u8 TT=0;

	 float Temp = 0;
	Init18B20();//1820初始化  
	Write18B20(0xcc); 	 //不提供64位ROM编码使用存储器   
	Write18B20(0x44); 	 //启动一次温度转换  
	Init18B20();//1820初始化 
	Write18B20(0xcc); 	//不提供64位ROM编码使用存储器
	Write18B20(0xbe); 	 //从字节0开始读取暂存器内容  
	  /*两次读取温度*/  
	TDown = Read18B20();   	
	TUp = Read18B20();   	
	
	if(TUp>0x7f)      //  如果TUp的值大于最大值（11111111）bin 
	{
		TDown=~TDown;   //TDown取反 
		TUp=~TUp+1; //TUp取反加一  
		TUp/=8;		      //TUp除以8 
		zf=1;         //zf标志位置1   
 	}
	else
		zf=0;	 
	fTemp=TDown&0x0f;		//TDown保留后四位，赋值给fTemp  
	TUp<<=4;//TUp左移四位，舍去高四位  
	TDown>>=4;//TDown右移四位，舍去低四位  
	TT=TUp|TDown;//TUp与TDown合并 赋值给TT  
	Temp=TT+(float)fTemp/16;		
	return(Temp);
}                            
int main(void)
{
	 int i;  	unsigned char ID[8];
  /*!< At this stage the microcontroller clock setting is already configured, 
       this is done through SystemInit() function which is called from startup
       file (startup_stm32f10x_xx.s) before to branch to application main.
       To reconfigure the default setting of SystemInit() function, refer to
       system_stm32f10x.c file
     */     
       
  /* System Clocks Configuration */
  RCC_Configuration();
USART_int(115200);
	Init18B20();//初始化18B20
	SysTick_Configuration();//系统滴答时钟配置  
	
	printf(" config done...\r\n");
 Write18B20(0x33);//此命令获取18B20的ID  
	 for(i=0;i<8;i++)//用一个8位的数组保存id值  
    {  
        ID[i]=Read18B20();  
    }  
	delay_ms(1000);
	
	while(1)
	{
		if(flag == 500){
			printf("The Temperature is:%f\r\n",Read_T());//500us读一次温度 
}
  if(flag == 300){         //300us读一次id  
              printf("The id is:");  
                for(i=0;i<8;i++)          
          {       
                printf("%u",ID[i]);      
                    if(i==7){printf("\r\n");    }  
        }   
      }  
}
}
#ifdef  USE_FULL_ASSERT

/**
  * @brief  Reports the name of the source file and the source line number
  *         where the assert_param error has occurred.
  * @param  file: pointer to the source file name
  * @param  line: assert_param error line source number
  * @retval None
  */
void assert_failed(uint8_t* file, uint32_t line)
{ 
  /* User can add his own implementation to report the file name and line number,
     ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */

  /* Infinite loop */
  while (1)
  {
  }
}

#endif

/**
  * @}
  */ 

/**
  * @}
  */ 

#ifdef __GNUC__
  /* With GCC/RAISONANCE, small printf (option LD Linker->Libraries->Small printf
     set to 'Yes') calls __io_putchar() */
  #define PUTCHAR_PROTOTYPE int __io_putchar(int ch)
#else
  #define PUTCHAR_PROTOTYPE int fputc(int ch, FILE *f)
#endif /* __GNUC__ */  
/**
  * @brief  Retargets the C library printf function to the USART.
  * @param  None
  * @retval None
  */
PUTCHAR_PROTOTYPE
{
  /* Place your implementation of fputc here */
  /* e.g. write a character to the USART */
  USART_SendData(EVAL_COM1, (uint8_t) ch);

  /* Loop until the end of transmission */
  while (USART_GetFlagStatus(EVAL_COM1, USART_FLAG_TC) == RESET)
  {}

  return ch;
}

#ifdef  USE_FULL_ASSERT

/**
  * @brief  Reports the name of the source file and the source line number
  *         where the assert_param error has occurred.
  * @param  file: pointer to the source file name
  * @param  line: assert_param error line source number
  * @retval None
  */
void assert_failed(uint8_t* file, uint32_t line)
{ 
  /* User can add his own implementation to report the file name and line number,
     ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */

  /* Infinite loop */
  while (1)
  {
  }
}

	#endif

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