英飞凌磁传感器 TLE5012b STM32F103 SPI 程序说明

1.硬件:

   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:

1:NC
2:SCK <= 120R => stm32f103 PA5
3:CSQ (CS) <= 120R => stm32f103 PB0
4:DATA <= 120R => stm32f103 PA6
  DATA <= 120R => stm32f103 PA7
  DATA <= 2.2K => Vdd 3.3V(如果不加电阻,上拉就好了。)
  PS:因是三线 SPI , MOSI , MISO 并线使用
 
5:NC
6:Vdd 3.3V
7:GND
8:NC

英飞凌磁传感器 TLE5012b STM32F103 SPI 程序说明_第1张图片

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|=0x40000000;}//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:英飞凌磁传感器TLE5012bSTM32F103SPI源码及Datasheet_tle5012b磁性编码器驱动指南-嵌入式代码类资源-CSDN下载



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