#include“stm32f10x_conf.h“

#define?SDI_H?GPIO_SetBits（GPIODGPIO_Pin_2）
#define?SDI_L?GPIO_ResetBits（GPIODGPIO_Pin_2）
#define?SCLK_H?GPIO_SetBits（GPIODGPIO_Pin_3）
#define?SCLK_L?GPIO_ResetBits（GPIODGPIO_Pin_3）
#define?NCS_H?GPIO_SetBits（GPIODGPIO_Pin_4）
#define?NCS_L?GPIO_ResetBits（GPIODGPIO_Pin_4）

#define?SDO?GPIO_ReadInputDataBit（GPIODGPIO_Pin_0）
#define?DRDY?GPIO_ReadInputDataBit（GPIODGPIO_Pin_1）//iso?module?is?not?connect

void?RCC_Configuration（void）;?
void?GPIO_Configuration（void）;
void?NVIC_Configuration（void）;?
void?Delay（vu32?nCount）;
uint8_t?MAX31865_SB_Read（uint8_t?addr）;
void?MAX31865_SB_Write（uint8_t?addruint8_t?wdata）;
float?Get_tempture（void）;
uint8_t?Fault_Status;??
float?tempture;

int?main（void）?
{?
??RCC_Configuration（）;????
??GPIO_Configuration（）;?
??NVIC_Configuration（）;?
??Delay（0xfff）;
??MAX31865_SB_Write（0x800xc1）;//MAX31865?init?（50Hz?filter）
??//MAX31865_SB_Write（0x800xFF）;//Set?High?Fault?Threshold?MSB
??//MAX31865_SB_Write（0x800xFF）;//Set?High?Fault?Threshold?LSB
??//MAX31865_SB_Write（0x800x00）;//Set?Low?Fault?Threshold?MSB?
??//MAX31865_SB_Write（0x800x00）;//Set?Low?Fault?Threshold?LSB?
??Delay（0xfff）;
??while?（1）?
??{?
????Delay（0x1ffff）;
????tempture=Get_tempture（）;
????Fault_Status=MAX31865_SB_Read（0x07）;//Get?Fault_Status
??}?
}?


float?Get_tempture（void）
{
??float?temps;
??uint16_t?dtemp[2];
??uint16_t?data_temp;
??dtemp[0]=MAX31865_SB_Read（0x01）;
??dtemp[1]=MAX31865_SB_Read（0x02）;
??data_temp=（dtemp[0]<<7）+（dtemp[1]>>1）;//Get?15Bit?DATA;
??temps=data_temp;
??temps=（temps*402）/32768;//Here?is?the?rtd?R?value;
??temps=（temps-100）/0.385055;//A?gruad
??return?temps;
}



uint8_t?MAX31865_SB_Read（uint8_t?addr）//SPI?Single-Byte?Read
{
??uint8_t?read?=?0;
??NCS_L;Delay（0x1f）;
??for（uint8_t?i?=?0;?i???{
????SCLK_H;
????if?（addr?&?0x80）{SDI_H;}
????else?{SDI_L;}
????Delay（0x1f）;
????SCLK_L;
????addr?<<=?1;
????Delay（0x1f）;
??}
??
??Delay（0x1f）;
??for?（uint8_t?i?=?0;?i???{
????SCLK_H;
????read?=?read<<1;
????Delay（0x1f）;
????if（SDO）
????{
??????read++;
????}
????SCLK_L;
????Delay（0x1f）;
??}
??NCS_H;
??return?read;
}

void?MAX31865_SB_Write（uint8_t?addruint8_t?wdata）//SPI?Single-Byte?Write
{
??NCS_L;Delay（0x1f）;
??for（uint8_t?i?=?0;?i???{
????SCLK_H;
????if?（addr?&?0x80）{SDI_H;}
????else?{SDI_L;}
????Delay（0x1f）;
????SCLK_L;
????addr?<<=?1;
????Delay（0x1f）;
??}
??
??for（uint8_t?i?=?0;?i???{
????SCLK_H;
????if?（wdata?&?0x80）{SDI_H;}
????else?{SDI_L;}
????Delay（0x1f）;
????SCLK_L;
????wdata?<<=?1;
????Delay（0x1f）;
??}
??NCS_H;
}



void?RCC_Configuration（void）?
{????
??ErrorStatus?HSEStartUpStatus;
??RCC_DeInit（）;?
??RCC_HSEConfig（RCC_HSE_ON）;?
??HSEStartUpStatus?=?RCC_WaitForHSEStartUp（）;?
??if（HSEStartUpStatus?==?SUCCESS）?
??{?
????FLASH_PrefetchBufferCmd（FLASH_PrefetchBuffer_Enable）;?
????FLASH_SetLatency（FLASH_Latency_2）;?
????RCC_HCLKConf

?屬性????????????大小?????日期????時(shí)間???名稱
-----------?---------??----------?-----??----

?????文件???????4468??2018-07-06?09:53??STM32模擬SPI參考程序\main.c

?????文件????1254447??2018-08-31?03:53??MAX31865_中文規(guī)格書(shū).pdf

?????目錄??????????0??2018-08-31?03:51??STM32模擬SPI參考程序

-----------?---------??----------?-----??----

??????????????1258915????????????????????3