嵌入式蓝桥杯2011年“国信长天杯”第三届嵌入式设计与开发的模拟试题“模拟停车场计费系统”设计任务书
首先我们看试题要求
首先我们看到试题要求并不是很多
需要用到的模块有 按键 LED LCD 串口 定时器
但是要实现的功能就很多
功能比较多 我们一个一个来实现 边实现边思考
不能一口吃个大胖子
首先我们初始化 LED KEY 串口
分割线
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今天下午出通知 要下个月才省赛 了
顿时有不想搞的冲动
然而这个赛题已经完成了90% 然后被一些BUG严重的影响了心情
主要是断断续续改
写程序真的要一气呵成 完成一个小功能就沾沾自喜是不行的
这个BUG想放弃改了 先把代码放着了
这个题目还是让我学到很多东西的
主函数代码
#include "stm32f10x.h"
#include "lcd.h"
#include "led.h"
#include "tim.h"
#include "key.h"
#include "myuart.h"
#include "led.h"
#include "rtc.h"
#include "beep.h"
_Bool LED_Parking = 1 ; //³µÎ»±êÖ¾ ÓгµÎ»¾ÍÊÇÊÇ 1 û³µÎ»¾ÍÊÇ 0 LED
_Bool Parking_1 = 1 ; //³µÎ»±êÖ¾ ÓгµÎ»¾ÍÊÇÊÇ 1 û³µÎ»¾ÍÊÇ 0 ʵ¼Ê³µÎ»±êÖ¾ 1¾ÍÊÇÓÐ 0¾ÍÊÇûÓÐ
_Bool Parking_2 = 1 ; //³µÎ»±êÖ¾ ÓгµÎ»¾ÍÊÇÊÇ 1 û³µÎ»¾ÍÊÇ 0 ʵ¼Ê³µÎ»±êÖ¾ 1¾ÍÊÇÓÐ 0¾ÍÊÇûÓÐ
_Bool Parking_3 = 1 ; //³µÎ»±êÖ¾ ÓгµÎ»¾ÍÊÇÊÇ 1 û³µÎ»¾ÍÊÇ 0 ʵ¼Ê³µÎ»±êÖ¾ 1¾ÍÊÇÓÐ 0¾ÍÊÇûÓÐ
_Bool Parking_4 = 1 ; //³µÎ»±êÖ¾ ÓгµÎ»¾ÍÊÇÊÇ 1 û³µÎ»¾ÍÊÇ 0 ʵ¼Ê³µÎ»±êÖ¾ 1¾ÍÊÇÓÐ 0¾ÍÊÇûÓÐ
_Bool Parking_5 = 1 ; //³µÎ»±êÖ¾ ÓгµÎ»¾ÍÊÇÊÇ 1 û³µÎ»¾ÍÊÇ 0 ʵ¼Ê³µÎ»±êÖ¾ 1¾ÍÊÇÓÐ 0¾ÍÊÇûÓÐ
_Bool Parking_6 = 1 ; //³µÎ»±êÖ¾ ÓгµÎ»¾ÍÊÇÊÇ 1 û³µÎ»¾ÍÊÇ 0 ʵ¼Ê³µÎ»±êÖ¾ 1¾ÍÊÇÓÐ 0¾ÍÊÇûÓÐ
_Bool Parking_7 = 1 ; //³µÎ»±êÖ¾ ÓгµÎ»¾ÍÊÇÊÇ 1 û³µÎ»¾ÍÊÇ 0 ʵ¼Ê³µÎ»±êÖ¾ 1¾ÍÊÇÓÐ 0¾ÍÊÇûÓÐ
_Bool Parking_8 = 1 ; //³µÎ»±êÖ¾ ÓгµÎ»¾ÍÊÇÊÇ 1 û³µÎ»¾ÍÊÇ 0 ʵ¼Ê³µÎ»±êÖ¾ 1¾ÍÊÇÓÐ 0¾ÍÊÇûÓÐ
_Bool Parking_9 = 1 ; //³µÎ»±êÖ¾ ÓгµÎ»¾ÍÊÇÊÇ 1 û³µÎ»¾ÍÊÇ 0 ʵ¼Ê³µÎ»±êÖ¾ 1¾ÍÊÇÓÐ 0¾ÍÊÇûÓÐ
_Bool Parking_10 = 1 ; //³µÎ»±êÖ¾ ÓгµÎ»¾ÍÊÇÊÇ 1 û³µÎ»¾ÍÊÇ 0 ʵ¼Ê³µÎ»±êÖ¾ 1¾ÍÊÇÓÐ 0¾ÍÊÇûÓÐ
u8 display_nTime = 0; //ÏÔʾÿ¸ö³µÅŵÄʱ¼ä 0 - 10
u32 Parking_time_1 =0; //³µÎ»×ܼÆʱÆ÷1
u32 Parking_time_2 =0; //³µÎ»×ܼÆʱÆ÷2
u32 Parking_time_3 =0; //³µÎ»×ܼÆʱÆ÷3
u32 Parking_time_4 =0; //³µÎ»×ܼÆʱÆ÷4
u32 Parking_time_5 =0; //³µÎ»×ܼÆʱÆ÷5
u32 Parking_time_6 =0; //³µÎ»×ܼÆʱÆ÷6
u32 Parking_time_7 =0; //³µÎ»×ܼÆʱÆ÷7
u32 Parking_time_8 =0; //³µÎ»×ܼÆʱÆ÷8
u32 Parking_time_9 =0; //³µÎ»×ܼÆʱÆ÷9
u32 Parking_time_10 =0; //³µÎ»×ܼÆʱÆ÷10
extern u8 key_status ;//0ÊÇûÓа´Ï 1ÊÇ°´ÏÂÁË
extern u8 key_release ;//1°´ÏÂÖ®ºóËÉ¿ª ¿ÉÒÔ´¥·¢×´Ì¬ 0 ±íʾ²»ÄÜ´¥·¢×´Ì¬
u8 THH_P =0 ,TMM_P=0,TSS_P=0; //³µÎ»¼ÆʱÆ÷µÄ·ÖÃëʱ
__IO uint32_t TimeDisplay = 0;
_Bool key_usart=1;
//Main Body
u8 Rates =1; //Êշѱ¶ÂÊ
u8 rates[20]={
0};
unsigned char IDcode =0; //³µÎ»±àÂë
u8 IDCode_nTIME[20]={
0};
void DISPLAY_Parking_time(void);
int main(void)
{
STM3210B_LCD_Init();
LCD_Clear(Blue);
LCD_SetBackColor(White);
USART2_Init();
KEY_Init();
SysTick_Config(SystemCoreClock/1000);
TIM2_Init();
LED_Init();
BEEP_Init();
BEEP_Control(1);
Delay_Ms(100);
BEEP_Control(0);
LCD_Clear(White);
LCD_DisplayStringLine(Line3 ," IDCode nTime ");
LCD_SetTextColor(Black);
RTC_Configuration();
Time_Adjust(23,55,55);
LED_Control(0x00);
while(1)
{
KEY_Read();
LCD_DisplayStringLine(Line4 ,IDCode_nTIME);
DISPLAY_Parking_time();
/* If 1s has been elapsed */
if (TimeDisplay == 1)
{
/* Display current time */
TimeDisplay = 0;
Time_Display(RTC_GetCounter());
}
}
}
void KEY_Read(void)
{
u8 t;
t=KEY_Scan();
if(key_status)
{
if(t=='1')
{
LCD_DisplayStringLine(Line3 ," IDCode nTime ");
key_usart=1;
switch(IDcode)
{
case 1 :
if(Parking_1)
{
Parking_1=0;
display_nTime=1;
}
break;
case 2 :
if(Parking_2)
{
Parking_2=0;
display_nTime=1;
}
break;
case 3 :
if(Parking_3)
{
Parking_3=0;
display_nTime=1;
}
break;
case 4 :
if(Parking_4)
{
Parking_4=0;
display_nTime=1;
}
break;
case 5 :
if(Parking_5)
{
Parking_5=0;
display_nTime=1;
}
break;
case 6 :
if(Parking_6)
{
Parking_6=0;
display_nTime=1;
}
break;
case 7 :
if(Parking_7)
{
Parking_7=0;
display_nTime=1;
}
break;
case 8 :
if(Parking_8)
{
Parking_8=0;
display_nTime=1;
}
break;
case 9 :
if(Parking_9)
{
Parking_9=0;
display_nTime=1;
}
break;
case 10 :
if(Parking_10)
{
Parking_10=0;
display_nTime=1;
}
break;
}
key_status=0;
}
if(t=='2')
{
if(Parking_1||Parking_2||Parking_3||Parking_4||Parking_5||Parking_6||Parking_7||Parking_8||Parking_9||Parking_10) //µ«·²ÓпÕλ
BEEP_Control(0);
else BEEP_Control(1);
LCD_DisplayStringLine(Line3 ," IDCode fee ");
switch(IDcode)
{
case 1:
Parking_1=1;
break;
case 2:
Parking_2=1;
break;case 3:
Parking_3=1;
break;case 4:
Parking_4=1;
break;case 5:
Parking_5=1;
break;case 6:
Parking_6=1;
break;case 7:
Parking_7=1;
break;case 8:
Parking_8=1;
break;case 9:
Parking_9=1;
break;case 10:
Parking_10=1;
}
}
}
}
void DISPLAY_Parking_time(void)
{
if(Parking_1||Parking_2||Parking_3||Parking_4||Parking_5||Parking_6||Parking_7||Parking_8||Parking_9||Parking_10) //µ«·²ÓпÕλ
LED_Control(0x01);
else LED_Control(0x02);
sprintf(rates," Rates = %d ",Rates);
LCD_DisplayStringLine(Line9 ,rates);
if(IDcode>10)IDcode=10;
if(Rates>10)Rates=10;
switch(IDcode)
{
case 1:
THH_P=Parking_time_1/3600;
TMM_P = (Parking_time_1 % 3600) / 60;
TSS_P = (Parking_time_1 % 3600) % 60;
if(Parking_1)
sprintf(IDCode_nTIME," %d %d ",IDcode,Rates*(THH_P+1));
else
sprintf(IDCode_nTIME," %d %0.2d-%0.2d-%0.2d ",IDcode,THH_P,TMM_P,TSS_P);
break;
case 2:
THH_P=Parking_time_2/3600;
TMM_P = (Parking_time_2 % 3600) / 60;
TSS_P = (Parking_time_2 % 3600) % 60;
if(Parking_2)
sprintf(IDCode_nTIME," %d %d ",IDcode,Rates*(THH_P+1));
else
sprintf(IDCode_nTIME," %d %0.2d-%0.2d-%0.2d ",IDcode,THH_P,TMM_P,TSS_P);
break;
case 3:
THH_P=Parking_time_3/3600;
TMM_P = (Parking_time_3 % 3600) / 60;
TSS_P = (Parking_time_3 % 3600) % 60;
if(Parking_3)
sprintf(IDCode_nTIME," %d %d ",IDcode,Rates*(THH_P+1));
else
sprintf(IDCode_nTIME," %d %0.2d-%0.2d-%0.2d ",IDcode,THH_P,TMM_P,TSS_P);
break;
case 4:
THH_P=Parking_time_4/3600;
TMM_P = (Parking_time_4 % 3600) / 60;
TSS_P = (Parking_time_4 % 3600) % 60;
if(Parking_4)
sprintf(IDCode_nTIME," %d %d ",IDcode,Rates*(THH_P+1));
else
sprintf(IDCode_nTIME," %d %0.2d-%0.2d-%0.2d ",IDcode,THH_P,TMM_P,TSS_P);
break;
case 5:
THH_P=Parking_time_5/3600;
TMM_P = (Parking_time_5 % 3600) / 60;
TSS_P = (Parking_time_5 % 3600) % 60;
if(Parking_5)
sprintf(IDCode_nTIME," %d %d ",IDcode,Rates*(THH_P+1));
else
sprintf(IDCode_nTIME," %d %0.2d-%0.2d-%0.2d ",IDcode,THH_P,TMM_P,TSS_P);
break;
case 6:
THH_P=Parking_time_6/3600;
TMM_P = (Parking_time_6 % 3600) / 60;
TSS_P = (Parking_time_6 % 3600) % 60;
if(Parking_6)
sprintf(IDCode_nTIME," %d %d ",IDcode,Rates*(THH_P+1));
else
sprintf(IDCode_nTIME," %d %0.2d-%0.2d-%0.2d ",IDcode,THH_P,TMM_P,TSS_P);
break;
case 7:
THH_P=Parking_time_7/3600;
TMM_P = (Parking_time_7 % 3600) / 60;
TSS_P = (Parking_time_7 % 3600) % 60;
if(Parking_7)
sprintf(IDCode_nTIME," %d %d ",IDcode,Rates*(THH_P+1));
else
sprintf(IDCode_nTIME," %d %0.2d-%0.2d-%0.2d ",IDcode,THH_P,TMM_P,TSS_P);
break;
case 8:
THH_P=Parking_time_8/3600;
TMM_P = (Parking_time_8 % 3600) / 60;
TSS_P = (Parking_time_8 % 3600) % 60;
if(Parking_8)
sprintf(IDCode_nTIME," %d %d ",IDcode,Rates*(THH_P+1));
else
sprintf(IDCode_nTIME," %d %0.2d-%0.2d-%0.2d ",IDcode,THH_P,TMM_P,TSS_P);
break;
case 9:
THH_P=Parking_time_9/3600;
TMM_P = (Parking_time_9 % 3600) / 60;
TSS_P = (Parking_time_9 % 3600) % 60;
if(Parking_9)
sprintf(IDCode_nTIME," %d %d ",IDcode,Rates*(THH_P+1));
else
sprintf(IDCode_nTIME," %d %0.2d-%0.2d-%0.2d ",IDcode,THH_P,TMM_P,TSS_P);
break;
case 10:
THH_P=Parking_time_10/3600;
TMM_P = (Parking_time_10 % 3600) / 60;
TSS_P = (Parking_time_10 % 3600) % 60;
if(Parking_10)
sprintf(IDCode_nTIME," %d %d ",IDcode,Rates*(THH_P+1));
else
sprintf(IDCode_nTIME," %d %0.2d-%0.2d-%0.2d ",IDcode,THH_P,TMM_P,TSS_P);
break;
}
}
//
void RTC_IRQHandler(void)
{
if (RTC_GetITStatus(RTC_IT_SEC) != RESET)
{
/* Clear the RTC Second interrupt */
RTC_ClearITPendingBit(RTC_IT_SEC);
/* Enable time update */
TimeDisplay = 1;
/* Wait until last write operation on RTC registers has finished */
RTC_WaitForLastTask();
//Í£³µ³¡¼ÆËãʱ¼ä
if(Parking_1)Parking_time_1=0;
else Parking_time_1++;
if(Parking_2)Parking_time_2=0;
else Parking_time_2++;
if(Parking_3)Parking_time_3=0;
else Parking_time_3++;
if(Parking_4)Parking_time_4=0;
else Parking_time_4++;
if(Parking_5)Parking_time_5=0;
else Parking_time_5++;
if(Parking_6)Parking_time_6=0;
else Parking_time_6++;
if(Parking_7)Parking_time_7=0;
else Parking_time_7++;
if(Parking_8)Parking_time_8=0;
else Parking_time_8++;
if(Parking_9)Parking_time_9=0;
else Parking_time_9++;
if(Parking_10)Parking_time_10=0;
else Parking_time_10++;
}
}
按键代码
#include "key.h"
#include "tim.h"
#include "led.h"
#include "beep.h"
extern _Bool Parking_one ; //³µÎ»±êÖ¾ ÓгµÎ»¾ÍÊÇÊÇ 1 û³µÎ»¾ÍÊÇ 0 ʵ¼Ê³µÎ»±êÖ¾ 1¾ÍÊÇÓÐ 0¾ÍÊÇûÓÐ
extern unsigned char IDcode ;
extern u8 IDCode_nTIME[20];
extern u8 THH_P ,TMM_P,TSS_P;
extern _Bool key_usart; //0Êǵȴý´®¿Ú 1ÊÇ´®¿Ú·¢ËÍÍêÁË
void KEY_Init(void)
{
GPIO_InitTypeDef GPIO_InitStruct;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA,ENABLE);
GPIO_InitStruct.GPIO_Mode=GPIO_Mode_IPU;
GPIO_InitStruct.GPIO_Pin=GPIO_Pin_0|GPIO_Pin_8;
GPIO_InitStruct.GPIO_Speed=GPIO_Speed_10MHz;
GPIO_Init(GPIOA,&GPIO_InitStruct);
}
u8 key_status = 1;//0ÊÇûÓа´Ï 1ÊÇ°´ÏÂÁË
u8 key_release = 1;//1°´ÏÂÖ®ºóËÉ¿ª ¿ÉÒÔ´¥·¢×´Ì¬ 0 ±íʾ²»ÄÜ´¥·¢×´Ì¬
u8 KEY_Scan(void)
{
if((KEY_0&&KEY_1)!=1)
{
Delay_Ms(20);
if((KEY_0&&KEY_1)!=1)
{
if(KEY_0==0)
return '1';
else if(KEY_1==0)
return '2';
}
}
else
{
key_status = 1;
}
}
串口处理代码
#include "myuart.h"
extern u8 Rates; //Êշѱ¶Â
extern _Bool key_usart; //0Êǵȴý´®¿Ú 1ÊÇ´®¿Ú·¢ËÍÍêÁË
void USART2_Init(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
USART_InitTypeDef USART_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;
/* Enable GPIO clock */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_AFIO, ENABLE);
RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2 , ENABLE);
/* Configure USART Tx as alternate function push-pull */
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOA, &GPIO_InitStructure);
/* Configure USART Rx as input floating */
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3;
GPIO_Init(GPIOA, &GPIO_InitStructure);
USART_InitStructure.USART_BaudRate = 115200;
USART_InitStructure.USART_WordLength = USART_WordLength_8b;
USART_InitStructure.USART_StopBits = USART_StopBits_1;
USART_InitStructure.USART_Parity = USART_Parity_No;
USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
/* USART configuration */
USART_Init(USART2,&USART_InitStructure);
/* Enable USART */
USART_Cmd(USART2, ENABLE);
USART_ITConfig(USART2, USART_IT_RXNE, ENABLE);
/* Enable the USARTz Interrupt */
NVIC_InitStructure.NVIC_IRQChannel = USART2_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
}
int fputc(int ch, FILE *f)
{
/* Place your implementation of fputc here */
/* e.g. write a character to the USART */
USART_SendData(USART2, (uint8_t) ch);
/* Loop until the end of transmission */
while (USART_GetFlagStatus(USART2, USART_FLAG_TC) == RESET)
{
}
return ch;
}
extern unsigned char IDcode ;
u8 usart2_char[10]={
0};
u8 usart2_counter=0;
u8 one = 0 , two = 0,three =0,four=0;
u8 fxone = 0 , fxtwo = 0,fxthree =0,fxfour=0;
void USART2_IRQHandler(void)
{
if(USART_GetITStatus(USART2, USART_IT_RXNE) != RESET)
{
/* Read one byte from the receive data register */
USART_ClearITPendingBit(USART2, USART_IT_RXNE);
// usart2_char[usart2_counter++]=USART_ReceiveData(USART2);
if(four)
{
four=USART_ReceiveData(USART2);
one =0 ; two =0;
if(four == '\r')
{
four=0;
}
else
{
IDcode =IDcode*10+(four - '0');
printf("I get ID%d \r",four-'0');
four = 0;
}
}
if(two)
{
three=USART_ReceiveData(USART2);
IDcode=(three - '0');
four=1;
}
if(USART_ReceiveData(USART2)=='I')one=1;
if(USART_ReceiveData(USART2)=='D'&&one)
{
key_usart=1;
two=1;
}
if(fxfour)
{
fxfour=USART_ReceiveData(USART2);
fxone =0 ; fxtwo =0;
if(fxfour == '\r')fxfour=0;
else
{
Rates =Rates*10+(fxfour - '0');
fxfour = 0;
}
}
if(fxtwo)
{
fxthree=USART_ReceiveData(USART2);
Rates=(fxthree - '0');
fxfour=1;
}
if(USART_ReceiveData(USART2)=='F')fxone=1;
if(USART_ReceiveData(USART2)=='x'&&fxone)fxtwo=1;
}
}
时钟代码
#include "tim.h"
#include "led.h"
u32 TimingDelay = 0;
u16 TIM2_nTime=0;
void Delay_Ms(u32 nTime)
{
TimingDelay = nTime;
while(TimingDelay != 0);
}
void TIM2_Init(void)
{
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
NVIC_InitTypeDef NVIC_InitStructure;
/* TIM2 clock enable */
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);
/* GPIOC clock enable */
/* NVIC Configuration */
/* Enable the TIM2 global Interrupt */
NVIC_InitStructure.NVIC_IRQChannel = TIM2_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
/* GPIO Configuration */
/* ---------------------------------------------------------------
TIM2 Configuration: Output Compare Timing Mode:
TIM2 counter clock at 6 MHz
CC1 update rate = TIM2 counter clock / CCR1_Val = 146.48 Hz
CC2 update rate = TIM2 counter clock / CCR2_Val = 219.7 Hz
CC3 update rate = TIM2 counter clock / CCR3_Val = 439.4 Hz
CC4 update rate = TIM2 counter clock / CCR4_Val = 878.9 Hz
--------------------------------------------------------------- */
/* Compute the prescaler value
1M = 1 000 000 000 us x 1000 1ms
Time base configuration */
TIM_TimeBaseStructure.TIM_Period = 1000-1;
TIM_TimeBaseStructure.TIM_Prescaler = 71;
TIM_TimeBaseStructure.TIM_ClockDivision = 0;
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseStructure.TIM_RepetitionCounter=0;
TIM_TimeBaseInit(TIM2, &TIM_TimeBaseStructure);
/* Prescaler configuration */
/* Output Compare Timing Mode configuration: Channel1 */
/* Output Compare Timing Mode configuration: Channel2 */
/* TIM IT enable */
TIM_ITConfig(TIM2, TIM_IT_Update, ENABLE);
/* TIM2 enable counter */
TIM_Cmd(TIM2, ENABLE);
}
void TIM2_IRQHandler(void)
{
if (TIM_GetITStatus(TIM2, TIM_IT_Update) != RESET)
{
TIM_ClearITPendingBit(TIM2, TIM_IT_Update);
TIM2_nTime++;
// if(TIM2_nTime>500)TIM2_nTime=0;
// if(TIM2_nTime>250)LED_Control(0x00);
// else LED_Control(0xff);
}
}
RTC代码
#include "rtc.h"
#include "stdio.h"
_Bool parking_one =0;
void NVIC_Configuration(void)
{
NVIC_InitTypeDef NVIC_InitStructure;
/* Configure one bit for preemption priority */
/* Enable the RTC Interrupt */
NVIC_InitStructure.NVIC_IRQChannel = RTC_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
}
void RTC_Configuration(void)
{
NVIC_Configuration();
/* Enable PWR and BKP clocks */
RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR | RCC_APB1Periph_BKP, ENABLE);
/* Allow access to BKP Domain */
PWR_BackupAccessCmd(ENABLE);
/* Reset Backup Domain */
BKP_DeInit();
/* Enable the LSI OSC */
RCC_LSICmd(ENABLE);
/* Wait till LSI is ready */
while (RCC_GetFlagStatus(RCC_FLAG_LSIRDY) == RESET)
{
}
/* Select the RTC Clock Source */
RCC_RTCCLKConfig(RCC_RTCCLKSource_LSI);
/* Enable RTC Clock */
RCC_RTCCLKCmd(ENABLE);
/* Wait for RTC registers synchronization */
RTC_WaitForSynchro();
/* Wait until last write operation on RTC registers has finished */
RTC_WaitForLastTask();
/* Enable the RTC Second */
RTC_ITConfig(RTC_IT_SEC, ENABLE);
/* Wait until last write operation on RTC registers has finished */
RTC_WaitForLastTask();
/* Set RTC prescaler: set RTC period to 1sec */
RTC_SetPrescaler(40000);
/* Wait until last write operation on RTC registers has finished */
RTC_WaitForLastTask();
/* To output second signal on Tamper pin, the tamper functionality
must be disabled (by default this functionality is disabled) */
BKP_TamperPinCmd(DISABLE);
/* Enable the RTC Second Output on Tamper Pin */
BKP_RTCOutputConfig(BKP_RTCOutputSource_Second);
}
/**
* @brief Returns the time entered by user, using Hyperterminal.
* @param None
* @retval Current time RTC counter value
*/
/**
* @brief Adjusts time.
* @param None
* @retval None
*/
void Time_Adjust(u8 Tmp_HH,u8 Tmp_MM,u8 Tmp_SS)
{
/* Wait until last write operation on RTC registers has finished */
RTC_WaitForLastTask();
/* Change the current time */
RTC_SetCounter(Tmp_HH*3600 + Tmp_MM*60 + Tmp_SS);
/* Wait until last write operation on RTC registers has finished */
RTC_WaitForLastTask();
}
/**
* @brief Displays the current time.
* @param TimeVar: RTC counter value.
* @retval None
*/
uint32_t THH = 0, TMM = 0, TSS = 0;
void Time_Display(uint32_t TimeVar)
{
/* Reset RTC Counter when Time is 23:59:59 */
if (RTC_GetCounter() == 0x0001517F)
{
RTC_SetCounter(0x0);
/* Wait until last write operation on RTC registers has finished */
RTC_WaitForLastTask();
}
/* Compute hours */
THH = TimeVar / 3600;
/* Compute minutes */
TMM = (TimeVar % 3600) / 60;
/* Compute seconds */
TSS = (TimeVar % 3600) % 60;
// printf("Time: %0.2d:%0.2d:%0.2d\r", THH, TMM, TSS);
}
蜂鸣器代码
#include "beep.h"
void BEEP_Init(void)
{
GPIO_InitTypeDef GPIO_InitStruct;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB,ENABLE);
GPIO_PinRemapConfig(GPIO_Remap_SWJ_NoJTRST,ENABLE);
GPIO_InitStruct.GPIO_Mode=GPIO_Mode_Out_PP;
GPIO_InitStruct.GPIO_Pin=GPIO_Pin_4;
GPIO_InitStruct.GPIO_Speed=GPIO_Speed_10MHz;
GPIO_Init(GPIOB,&GPIO_InitStruct);
}
void BEEP_Control(u8 BEEP)
{
if(BEEP==1)
GPIO_ResetBits(GPIOB,GPIO_Pin_4);
else
GPIO_SetBits(GPIOB,GPIO_Pin_4);
}