STM32温度报警传感器代码.docx

主函数 、main.c

#include "led.h"

#include "delay.h"

#include "sys.h"

#include "usart.h"

#include "lcd.h"

#include "ds18b20.h"

#include "key.h"

#include <string.h>

void TIM3_Int_Init(u16 arr,u16 psc)

{

TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;

NVIC_InitTypeDef NVIC_InitStructure;

RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3, ENABLE); //时钟使能

TIM_TimeBaseStructure.TIM_Period = arr; //设置在下一个更新事件装入

活动的自动重装载寄存器周期的值 计数到 5000 为 500ms

TIM_TimeBaseStructure.TIM_Prescaler =psc; //设置用来作为 TIMx 时钟频

率除数的预分频值 10Khz 的计数频率

TIM_TimeBaseStructure.TIM_ClockDivision = 0; //设置时钟分割:TDTS =

TIM_ITConfig( //使能或者失能指定的 TIM 中断

TIM3, //TIM2

TIM_IT_Update ,

ENABLE //使能

);

NVIC_InitStructure.NVIC_IRQChannel = TIM3_IRQn; //TIM3 中断

NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0; //先占

优先级 0 级

NVIC_InitStructure.NVIC_IRQChannelSubPriority = 3; //从优先级 3 级

NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; //IRQ 通道被使能

int main(void)

{

u8 t = 0;

u8 shuzu[20];

u8 keyvalue=0;

u8 gaibianshui=0;

short temperature;

delay_init(); //延时函数初始化

uart_init(9600); //串口初始化为 9600

NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);// 设置中断优先

级分组 2

//LCD_ShowString(0,90,200,16,16,"Max 32 C Min 26 C");

memset(shuzu, 0, 20);

sprintf(shuzu, "Max is %2d C,Min is %2d C", temp_high, temp_low);

LCD_ShowString(0, 90, 200, 16, 16, shuzu);

while (DS18B20_Init()) //DS18B20 初始化

{

LCD_ShowString(0, 130, 200, 16, 16, "DS18B20 Error");

delay_ms(200);

LCD_Fill(0, 130, 239, 130 + 16, WHITE);

delay_ms(200);

}

POINT_COLOR = BLUE; //设置字体为蓝色

LCD_ShowString(0, 110, 260, 16, 16, "The temperature is: . C now

");

LCD_ShowChar(0+25*8,110,',',16,0);

LCD_ShowChar(0+29*8,110,'!',16,0);

temperature = DS18B20_Get_Temp();

if (temperature < 0)

{

LCD_ShowChar(0 + 40, 150, '-', 16, 0); //显示