英飞凌磁传感器 TLE5012b STM32F103 SPI 程序说明

   A. 英飞凌磁传感器 TLE5012bE1000

   B. STM32F103

   C. 磁铁，请用“径向充磁”的圆磁铁，如 直径 10 x 厚 2mm，找TB买

2.TLE5012B_E1000 接线说明:

3.源码说明：

   A. 初始化 SPI5012B_Init();

   B. 得到 0~359 角度 ReadAngle() 或 角速度 ReadSpeed()

void SPI5012B_Init(void) { SPI_InitTypeDef SPI_InitStructure; GPIO_InitTypeDef GPIO_InitStructure; RCC_APB2PeriphClockCmd( RCC_APB2Periph_SPI1,ENABLE ); //以下二句，在它处声明，请增加使用 RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA|RCC_APB2Periph_GPIOB|RCC_APB2Periph_AFIO,ENABLE); GPIO_PinRemapConfig(GPIO_Remap_SWJ_Disable,ENABLE);//使JTDO、JTDI、JTCK 当成普通IO口进行操作 //GPIOB0 当成普通IO口进行操作 /*SPI: NSS,SCK,MISO and MOSI */ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;//PA5--CLK--复用推挽 GPIO_Init(GPIOA, &GPIO_InitStructure); //GPIO_StructInit(&GPIO_InitStructure); /* Configure PA6 as encoder input */ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPD;//PA6--MISO--输入 GPIO_Init(GPIOA, &GPIO_InitStructure); /* PA7*/ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_7; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;//PA7--MOSI--推挽输出 GPIO_Init(GPIOA, &GPIO_InitStructure); GPIO_InitStructure.GPIO_Pin = GPIO_CS_Pin_Name;//PB0--CS--推挽输出 GPIO_Init(GPIO_CS_Pin_Type, &GPIO_InitStructure); /SPI/ SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex;//SPI1--双线全双工！！ SPI_InitStructure.SPI_Mode = SPI_Mode_Master; SPI_InitStructure.SPI_DataSize = SPI_DataSize_16b; SPI_InitStructure.SPI_CPOL = SPI_CPOL_Low; SPI_InitStructure.SPI_CPHA = SPI_CPHA_2Edge; SPI_InitStructure.SPI_NSS = SPI_NSS_Soft; SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_8; SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB; SPI_InitStructure.SPI_CRCPolynomial = 7; SPI_Init(SPI1, &SPI_InitStructure); SPI_Cmd(SPI1, ENABLE); }

uint16_t SPIx_ReadWriteByte(uint16_t byte) { uint16_t retry = 0; while( (SPI1->SR&1<<1) == 0 )//发送缓冲区非空 { if( ++retry > 200 ) return 0;//延迟一段时间后返回 } SPI1->DR = byte; //发送数据 retry = 0; while( (SPI1->SR&1<<0) == 0 ) //接收缓冲区为空 { if( ++retry > 200 ) return 0;//延迟一段时间后返回 } return SPI1->DR; //读一下缓冲区，清标志 } //得到 0~359 度 uint16_t ReadAngle(void) { return ( ReadValue(READ_ANGLE_VALUE) * 360 / 0x10000 ); } //得到角速度 uint16_t ReadSpeed(void) { return ReadValue(READ_SPEED_VALUE); } uint16_t ReadValue(uint16_t u16RegValue) { uint16_t u16Data; SPI_CS_ENABLE; SPIx_ReadWriteByte(u16RegValue); SPI_TX_OFF; //发送 0xFFFF 是无用的，可能是为了有时钟 u16Data = ( SPIx_ReadWriteByte(0xffff) & 0x7FFF ) << 1;//0x12/0xff*100k SPI_CS_DISABLE; SPI_TX_ON; return(u16Data); }

/ * @file spi_TLE5012B.h * @author Keith Cheung * @version V3.5.0 * @date 13-MAY-2017 * @brief This file contains the headers of the spi_TLE5012B. * @attention * * * 
 
   
     © COPYRIGHT 2017 
   
 */ #ifndef _TLE5012B_H_ #define _TLE5012B_H_ #include "stm32f10x.h" //SPI5012B_Init() 时钟需另外加上 //以下内容需按实际更改 #define SPI_TX_OFF {GPIOA->CRL&=0x0FFFFFFF;GPIOA->CRL|=0x;}//把PA7（MOSI）配置成开漏--输入模式 #define SPI_TX_ON {GPIOA->CRL&=0x0FFFFFFF;GPIOA->CRL|=0xB0000000;}//把PA7（MOSI）配置成推挽--输出模式（50MHz） #define GPIO_CS_Pin_Name GPIO_Pin_0 #define GPIO_CS_Pin_Type GPIOB //以下内容一般不需变动 #define SPI_CS_ENABLE GPIO_ResetBits(GPIO_CS_Pin_Type, GPIO_CS_Pin_Name) //片选脚电平拉低 #define SPI_CS_DISABLE GPIO_SetBits(GPIO_CS_Pin_Type, GPIO_CS_Pin_Name) //片选脚电平拉高 //#define INDEX_ENABLE GPIO_SetBits(GPIOA, GPIO_Pin_4)/* for incremental signal index */ //#define CLK_H GPIO_SetBits(GPIOA, GPIO_Pin_5) //时钟脚PA5电平拉高 //#define CLK_L GPIO_ResetBits(GPIOA, GPIO_Pin_5) //时钟脚PA5电平拉低 //#define DATA_H GPIO_SetBits(GPIOA, GPIO_Pin_6) //PA6（MISO）电平拉高 //#define DATA_L GPIO_ResetBits(GPIOA, GPIO_Pin_6) //PA6（MISO）电平拉低 //#define READ_DATA GPIO_ReadInputDataBit(GPIOA,GPIO_Pin_6) /* SPI command for TLE5012 */ #define READ_STATUS 0x8001 //8000 #define READ_ANGLE_VALUE 0x8021 //8020 #define READ_SPEED_VALUE 0x8031 //8030 #define WRITE_MOD1_VALUE 0x5060 //0_1010_0_000110_0001 #define MOD1_VALUE 0x0001 #define WRITE_MOD2_VALUE 0x5080 //0_1010_0_001000_0001 #define MOD2_VALUE 0x0801 #define WRITE_MOD3_VALUE 0x5091 //0_1010_0_001001_0001 #define MOD3_VALUE 0x0000 #define WRITE_MOD4_VALUE 0x50E0 //0_1010_0_001110_0001 #define MOD4_VALUE 0x0098 //9bit 512 #define WRITE_IFAB_VALUE 0x50B1 #define IFAB_VALUE 0x000D /* Functionality mode */ #define REFERESH_ANGLE 0 void SPI5012B_Init(void); void SPI_SendData16(uint16_t SendData); uint16_t SPI_ReadData16(void); uint16_t ReadAngle(void); uint16_t ReadSpeed(void); uint16_t ReadValue(uint16_t u16Value); uint16_t SPIx_ReadWriteByte(uint16_t byte); uint16_t TlE5012W_Reg(uint16_t Reg_CMD, uint16_t Reg_Data); #endif 

4. 源码下载：http://download.csdn.net/detail/keith_cheung/