基于STM32103和ds18b20的测温 5110屏幕显示 -

#include "delay.h"
#include "LCD5110.h"
#include "ds18b20.h"
#include "sys.h"
#include "timer.h"
#include "exti.h"
// vu8 i = 0;
u8 str[20];
s16 temperature ; //温度
int main(void)
{
RCC_Configuration(); //系统时钟配置
GPIO_Configuration();
delay_init() ;
NVIC_Configuration(); //设置NVIC中断分组2:2位抢占优先级，2位响应优先级
TIM3_Int_Init(4999,7199);//10Khz的计数频率，计数到5000为500ms
/*
// 配置外部中断
KEY_Init();
EXTIX_Init();
*/
SPI2_Config();
DMA_SPI_Config();
LCD_CLK_H();
LCD_VCC_H();
LCD_GND_L();
LCD_BGL_L(); //背光灯开启
delay_ms(10); //等待
LCD_Init(); //初始化液晶
LCD_Clear(); //清屏
while(DS18B20_Init()) //DS18B20初始化
{
LCD_Write_EnStr(0,0,"DS18B20 Error");
}
LCD_Write_EnStr(2,2,"DS18B20 OK");
delay_ms(1000);
delay_ms(1000);
LCD_Write_EnStr(0,0,"*************");
LCD_Write_EnStr(0,1," The current ");
LCD_Write_EnStr(0,2," temperature");
LCD_Write_EnStr(6,3,"is");
LCD_Write_EnStr(0,5,"*************");
while(1)
{
if(temperature<0)
{
LCD_Write_EnStr(2,4,"-"); //显示负号
temperature=-temperature; //转为正数
}else LCD_Write_EnStr(0,4," "); //去掉负号
LCD_Write_EnStr(4,4,str);
}
}
//定时器3中断服务程序
//每500ms读取一次温度
void TIM3_IRQHandler(void) //TIM3中断
{
if (TIM_GetITStatus(TIM3, TIM_IT_Update) != RESET) //检查TIM3更新中断发生与否
{
temperature = DS18B20_Get_Temp(); //读取温度
num_to_str( temperature,str); //将温度转换为ASC值
TIM_ClearITPendingBit(TIM3, TIM_IT_Update ); //清除TIMx更新中断标志
}
}
/*
void EXTI3_IRQHandler(void)
……………………
…………限于本文篇幅余下代码请从51黑下载附件…………

复制代码