基于STM32的DS18b20驱动程序.doc

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1、//=========================DS18b20.h=========================///*-----------------------------------------------              DS18b20驱动程序------------------------------------------------*/#ifndef__DS18B20_H#define__DS18B20_Htypedefenum{FAILED=0,PASSED=!FAILED}TestStatus;#defineDQ_GPIO GPIOD#de

2、fineDQ_GPIO_PinGPIO_Pin_5//REGISTERCOMMANDS#defineREGISTER_9_BITS 0x1F#defineREGISTER_10_BITS0x3F#defineREGISTER_11_BITS0x5F#defineREGISTER_12_BIT20x7F//ROMCOMMANDS#defineROM_Search_Cmd  0xF0#defineROM_Read_Cmd    0x33#defineROM_Match_Cmd   0x55#defineROM_Skip_Cmd    0xCC#defineROM_AlarmSearc

3、h_Cmd0xEC//DS18b20FUNCTIONCOMMANDS#defineConvert_T         0x44#defineWrite_Scratchpad 0x4E#defineRead_Scratchpad  0xBE#defineCopy_Scratchpad  0x48#defineRecall_EEPROM    0x88#defineRead_PowerSupply 0x84#defineDQ_Write_1()    GPIO_SetBits(DQ_GPIO,DQ_GPIO_Pin) //写1#defineDQ_Write_0()    GPIO_R

4、esetBits(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_OneB

5、yte_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,unsignedcharT

6、l,unsignedcharRegister_Con);voidDS18B20_Init(void);//初始化#endif/*DS18B20*///=================================================================////=========================DS18b20.c================================//#include"stm32f10x_lib.h"#include"DS18b20.h"#include"SysTick_Delay.h"/***********

7、*******************************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;