//=========================DS18b20.h=========================///*-----------------------------------------------DS18b20驱动程序------------------------------------------------*/#ifndef__DS18B20_H#define__DS18B20_Htypedefenum{FAILED=0,PASSED=!FAILED}TestStatus;#defineDQ_GPIOGPIOD#defineDQ_GPIO_PinGPIO_Pin_5//REGISTERCOMMANDS#defineREGISTER_9_BITS0x1F#defineREGISTER_10_BITS0x3F#defineREGISTER_11_BITS0x5F#defineREGISTER_12_BIT20x7F//ROMCOMMANDS#defineROM_Search_Cmd0xF0#defineROM_Read_Cmd0x33#defineROM_Match_Cmd0x55#defineROM_Skip_Cmd0xCC#defineROM_AlarmSearch_Cmd0xEC//DS18b20FUNCTIONCOMMANDS#defineConvert_T0x44#defineWrite_Scratchpad0x4E#defineRead_Scratchpad0xBE#defineCopy_Scratchpad0x48#defineRecall_EEPROM0x88#defineRead_PowerSupply0x84#defineDQ_Write_1()GPIO_SetBits(DQ_GPIO,DQ_GPIO_Pin)//写1#defineDQ_Write_0()GPIO_ResetBits(DQ_GPIO,DQ_GPIO_Pin)//写0#defineDQ_ReadBit()GPIO_ReadInputDataBit(DQ_GPIO,DQ_GPIO_Pin)//读DQ上的值externvoidGPIO_DQ_Out_Mode(void);//DQ输出模式externvoidGPIO_DQ_Input_Mode(void);//DQ输入模式externvoidTx_ResetPulse(void);//发送复位脉冲externvoidRx_PresencePulse(void);//接受应答信号externvoidWrite_OneByte_ToDS18b20(unsignedchardata);//写一个字节到18b20externunsignedcharRead_OneByte_FromDS18b20(void);//从18b20读一个字节externvoidRead_Temperature(unsignedchar*sign,unsignedchar*interger,unsignedint*decimal);//读温度//写配置参数TH，TL和初始化配置寄存器externvoidWrite_EEPROM(unsignedcharTh,unsignedcharTl,unsignedcharRegister_Con);voidDS18B20_Init(void);//初始化#endif/*DS18B20*///=================================================================////=========================DS18b20.c================================//#include"stm32f10x_lib.h"#include"DS18b20.h"#include"SysTick_Delay.h"/******************************************函数名称：GPIO_DQ_Out_Mode功能：设置DQ引脚为开漏输出模式参数：无返回值：无*******************************************/voidGPIO_DQ_Out_Mode(void){GPIO_InitTypeDefGPIO_InitStructure;GPIO_InitStructure.GPIO_Pin=DQ_GPIO_Pin;GPIO_InitStructure.GPIO_Speed=GPIO_Speed_50MHz;GPIO_InitStructure.GPIO_Mode=GPIO_Mode_Out_OD;//开漏输出GPIO_Init(DQ_GPIO,&GPIO_InitStructure);}/******************************************函数名称：GPIO_DQ_Input_Mode功能：设置DQ引脚为浮空输入模式参数：无返回值：无*******************************************/voidGPIO_DQ_Input_Mode(void){GPIO_InitTypeDefGPIO_InitStructure;GPIO_InitStructure.GPIO_Pin=DQ_GPIO_Pin;GPIO_InitStructure.GPIO_Speed=GPIO_Speed_50MHz;GPIO_InitStructure.GPIO_Mode=GPIO_Mode_IN_FLOATING;//浮空输入GPIO_Init(DQ_GPIO,&GPIO_InitStructure);}/******************************************函数名称：Tx_ResetPulse功能：发送复位脉冲参数：无返回值：无*******************************************/voidTx_ResetPulse(void){GPIO_DQ_Out_Mode();DQ_Write_0();//复位脉冲Delay_Nus(500);//至少保持480usDQ_Write_1();//加速上升沿速度Delay_Nus(1);}/******************************************函数名称：Rx_PresencePulse功能：接受应答信号参数：无返回值：无*******************************************/voidRx_PresencePulse(void){GPIO_DQ_Input_Mode();while(DQ_ReadBit());//等待DS18b20应答while(DQ_ReadBit()==0);//DS18b20将总线拉低60~240us,然后总线由上拉电阻拉高Delay_Nus(300);GPIO_DQ_Out_Mode();//接受完成，主机重新控制总线}/******************************************函数名称：Write_OneByte_ToDS18b20功能：写一个字节到DS18b20参数：无返回值：无************...
