STM32使用cubemx、HAL库硬件SPI驱动ICM20602

软件平台:cubemx  mdk

硬件平台:stm32f103rct6  ICM20602

工程源代码链接:

https://download.csdn.net/download/wwwlyj123321/10998420

一、配置总览

如下图所示:使用外部8m晶振,使用sw调试下载,使用串口1作为打印信息的输出,spi2连接ICM206002

STM32使用cubemx、HAL库硬件SPI驱动ICM20602_第1张图片

MISO是master in slave output

MOSI是master output slave in

二、SPI配置

SPI为全双工,硬件NSS关闭

数据位为8位,CPHA为数据线的第一个变化沿,软件控制NSS,最高位先发送,CRC关闭

STM32使用cubemx、HAL库硬件SPI驱动ICM20602_第2张图片

再配置PA8为普通io口,作为片选

STM32使用cubemx、HAL库硬件SPI驱动ICM20602_第3张图片

三、ICM20602驱动

主要使用HAL_SPI_TransmitReceive函数对ICM20602的寄存器进行读写操作。

#include "icm20602.h"

//========ICM20602寄存器地址========================
/********************************************
*复位后所有寄存器地址都为0,除了
*Register 26  CONFIG				= 0x80
*Register 107 Power Management 1 	= 0x41
*Register 117 WHO_AM_I 				= 0x12
*********************************************/
//陀螺仪温度补偿
#define	ICM20_XG_OFFS_TC_H				0x04
#define	ICM20_XG_OFFS_TC_L				0x05
#define	ICM20_YG_OFFS_TC_H				0x07
#define	ICM20_YG_OFFS_TC_L				0x08
#define	ICM20_ZG_OFFS_TC_H				0x0A
#define	ICM20_ZG_OFFS_TC_L				0x0B
//加速度自检输出(出产时设置,用于与用户的自检输出值比较)
#define	ICM20_SELF_TEST_X_ACCEL			0x0D
#define	ICM20_SELF_TEST_Y_ACCEL			0x0E
#define	ICM20_SELF_TEST_Z_ACCEL			0x0F
//陀螺仪静态偏移
#define	ICM20_XG_OFFS_USRH				0x13
#define	ICM20_XG_OFFS_USRL				0x14
#define	ICM20_YG_OFFS_USRH				0x15
#define	ICM20_YG_OFFS_USRL				0x16
#define	ICM20_ZG_OFFS_USRH				0x17
#define	ICM20_ZG_OFFS_USRL				0x18

#define	ICM20_SMPLRT_DIV				0x19
#define	ICM20_CONFIG					0x1A
#define	ICM20_GYRO_CONFIG				0x1B
#define	ICM20_ACCEL_CONFIG				0x1C
#define	ICM20_ACCEL_CONFIG2				0x1D
#define	ICM20_LP_MODE_CFG				0x1E

//运动唤醒加速度阈值
#define	ICM20_ACCEL_WOM_X_THR			0x20
#define	ICM20_ACCEL_WOM_Y_THR			0x21
#define	ICM20_ACCEL_WOM_Z_THR			0x22


#define	ICM20_FIFO_EN					0x23
#define	ICM20_FSYNC_INT					0x36
#define	ICM20_INT_PIN_CFG				0x37
//#define	ICM20_INT_ENABLE				0x38
#define	ICM20_FIFO_WM_INT_STATUS		0x39
#define	ICM20_INT_STATUS				0x3A

//加速度输出
#define	ICM20_ACCEL_XOUT_H				0x3B
#define	ICM20_ACCEL_XOUT_L				0x3C
#define	ICM20_ACCEL_YOUT_H				0x3D
#define	ICM20_ACCEL_YOUT_L				0x3E
#define	ICM20_ACCEL_ZOUT_H				0x3F
#define	ICM20_ACCEL_ZOUT_L				0x40
//温度输出
#define	ICM20_TEMP_OUT_H				0x41
#define	ICM20_TEMP_OUT_L				0x42
//角速度输出
#define	ICM20_GYRO_XOUT_H				0x43
#define	ICM20_GYRO_XOUT_L				0x44
#define	ICM20_GYRO_YOUT_H				0x45
#define	ICM20_GYRO_YOUT_L				0x46
#define	ICM20_GYRO_ZOUT_H				0x47
#define	ICM20_GYRO_ZOUT_L				0x48
//陀螺仪自检输出
#define	ICM20_SELF_TEST_X_GYRO			0x50
#define	ICM20_SELF_TEST_Y_GYRO			0x51
#define	ICM20_SELF_TEST_Z_GYRO			0x52

#define	ICM20_FIFO_WM_TH1				0x60
#define	ICM20_FIFO_WM_TH2				0x61
#define	ICM20_SIGNAL_PATH_RESET			0x68
#define	ICM20_ACCEL_INTEL_CTRL 			0x69
#define	ICM20_USER_CTRL					0x6A
//电源控制
#define	ICM20_PWR_MGMT_1				0x6B
#define	ICM20_PWR_MGMT_2				0x6C

#define	ICM20_I2C_IF					0x70
#define	ICM20_FIFO_COUNTH				0x72
#define	ICM20_FIFO_COUNTL				0x73
#define	ICM20_FIFO_R_W					0x74

#define	ICM20_WHO_AM_I 					0x75
//加速度静态偏移
#define	ICM20_XA_OFFSET_H				0x77
#define	ICM20_XA_OFFSET_L				0x78
#define	ICM20_YA_OFFSET_H				0x7A
#define	ICM20_YA_OFFSET_L				0x7B
#define	ICM20_ZA_OFFSET_H				0x7D
#define	ICM20_ZA_OFFSET_L 				0x7E
//===========================================================

extern SPI_HandleTypeDef hspi2;

static 	float _accel_scale;
static	float _gyro_scale;

static uint8_t tx, rx;
static uint8_t tx_buff[14];
//static uint8_t mpu_buff[14];
#define ICM20602_ADDRESS	0xD2



uint8_t icm20602_read_buffer(uint8_t const regAddr, uint8_t *pData, uint8_t len)
{
  HAL_GPIO_WritePin(CS_ICM_GPIO_Port, CS_ICM_Pin,0);
  tx = regAddr | 0x80;
  tx_buff[0] = tx;
  HAL_SPI_TransmitReceive(&hspi2, &tx, &rx, 1, 55);
  HAL_SPI_TransmitReceive(&hspi2, tx_buff, pData, len, 55);
  HAL_GPIO_WritePin(CS_ICM_GPIO_Port, CS_ICM_Pin,1);
  return 0;
}



uint8_t icm20602_write_reg(uint8_t reg,uint8_t val)
{

	HAL_GPIO_WritePin(CS_ICM_GPIO_Port, CS_ICM_Pin,0);
	tx = reg & 0x7F;
  HAL_SPI_TransmitReceive(&hspi2, &tx, &rx, 1, 55);
  tx = val;
  HAL_SPI_TransmitReceive(&hspi2, &tx, &rx, 1, 55);
	HAL_GPIO_WritePin(CS_ICM_GPIO_Port, CS_ICM_Pin,1);

	return 0;
}


uint8_t icm20602_read_reg(uint8_t reg)
{
	HAL_GPIO_WritePin(CS_ICM_GPIO_Port, CS_ICM_Pin,0);
	tx = reg | 0x80;
	HAL_SPI_TransmitReceive(&hspi2, &tx, &rx, 1, 55);
  HAL_SPI_TransmitReceive(&hspi2, &tx, &rx, 1, 55);//这个应该是随便发一个数就行
	HAL_GPIO_WritePin(CS_ICM_GPIO_Port, CS_ICM_Pin,1);//源代码发送的是ff
	
	return rx;
}






uint8_t icm20602_init()
{
	if(icm20602_write_reg(ICM20_PWR_MGMT_1,0x80))	//复位,复位后位0x41,睡眠模式,
	{
		
		puts("icm_20602 reset fail\r\n");
		return 1;
	}
	
	HAL_Delay(50);
	icm20602_write_reg(ICM20_PWR_MGMT_1,0x01);		//关闭睡眠,自动选择时钟
	HAL_Delay(50);
	
	printf("icm_20602 id=%x\r\n",icm20602_read_reg(ICM20_WHO_AM_I));//读取ID
	
	
	icm20602_write_reg(ICM20_SMPLRT_DIV,0);			//分频数=为0+1,数据输出速率为内部采样速率
	icm20602_write_reg(ICM20_CONFIG,DLPF_BW_20);	//GYRO低通滤波设置
	icm20602_write_reg(ICM20_ACCEL_CONFIG2,ACCEL_AVER_4|ACCEL_DLPF_BW_21);	//ACCEL低通滤波设置
	
	
	icm20602_set_accel_fullscale(ICM20_ACCEL_FS_8G);
	icm20602_set_gyro_fullscale(ICM20_GYRO_FS_2000);
	

	HAL_Delay(100);
	printf("icm20602 init pass\r\n\r\n");
	
	return 0;
}





uint8_t icm20602_set_gyro_fullscale(uint8_t fs)
{
	switch(fs)
	{
		case ICM20_GYRO_FS_250:
			_gyro_scale = 1.0f/131.068f;	//32767/250
		break;
		case ICM20_GYRO_FS_500:
			_gyro_scale = 1.0f/65.534f;
		break;
		case ICM20_GYRO_FS_1000:
			_gyro_scale = 1.0f/32.767f;
		break;
		case ICM20_GYRO_FS_2000:
			_gyro_scale = 1.0f/16.4f;
		break;
		default:
			fs = ICM20_GYRO_FS_2000;
			_gyro_scale = 1.0f/16.3835f;
		break;

	}
	
	return icm20602_write_reg(ICM20_GYRO_CONFIG,fs);
	
}


uint8_t icm20602_set_accel_fullscale(uint8_t fs)
{
	switch(fs)
	{
		case ICM20_ACCEL_FS_2G:
			_accel_scale = 1.0f/16348.0f;
		break;
		case ICM20_ACCEL_FS_4G:
			_accel_scale = 1.0f/8192.0f;
		break;
		case ICM20_ACCEL_FS_8G:
			_accel_scale = 1.0f/4096.0f;
		break;
		case ICM20_ACCEL_FS_16G:
			_accel_scale = 1.0f/2048.0f;
		break;
		default:
			fs = ICM20_ACCEL_FS_8G;
			_accel_scale = 1.0f/4096.0f;
		break;

	}
	return icm20602_write_reg(ICM20_ACCEL_CONFIG,fs);
}




uint8_t icm20602_get_accel_adc(int16_t *accel)
{
	uint8_t buf[6];
	if(icm20602_read_buffer(ICM20_ACCEL_XOUT_H,buf,6))return 1;
	
	accel[0] = ((int16_t)buf[0]<<8) + buf[1];
	accel[1] = ((int16_t)buf[2]<<8) + buf[3];
	accel[2] = ((int16_t)buf[4]<<8) + buf[5];
	return 0;
}



uint8_t icm20602_get_gyro_adc(int16_t *gyro)
{
	uint8_t buf[6];
	if(icm20602_read_buffer(ICM20_GYRO_XOUT_H,buf,6))return 1;
	gyro[0] = (buf[0]<<8) + buf[1];
	gyro[1] = (buf[2]<<8) + buf[3];
	gyro[2] = (buf[4]<<8) + buf[5];
	return 0;
}
uint8_t icm20602_get_gyro(float *gyro)
{
	int16_t gyro_adc[3];
	if(icm20602_get_gyro_adc(gyro_adc))return 1;
	
	gyro[0] = _gyro_scale * gyro_adc[0];
	gyro[1] = _gyro_scale * gyro_adc[1];
	gyro[2] = _gyro_scale * gyro_adc[2];	
	return 0;
}
uint8_t icm20602_get_accel(float *accel)
{
	int16_t accel_adc[3];
	if(icm20602_get_accel_adc(accel_adc))return 1;
	accel[0] = _accel_scale * accel_adc[0];
	accel[1] = _accel_scale * accel_adc[1];
	accel[2] = _accel_scale * accel_adc[2];	
	return 0;
}

float icm20602_get_temp()
{
	int16_t temp_adc;
	uint8_t buf[2];
	if(icm20602_read_buffer(ICM20_TEMP_OUT_H,buf,2))return 0.0f;

	temp_adc = (buf[0]<<8)+buf[1];

	return (25.0f + (float)temp_adc/326.8f);
}

#ifndef _ICM20602_H_
#define _ICM20602_H_
#include "main.h"
#include "stm32f1xx_hal.h"
#include "stdint.h"



//加速度量程
#define ICM20_ACCEL_FS_2G			(0<<3)
#define ICM20_ACCEL_FS_4G			(1<<3)
#define ICM20_ACCEL_FS_8G			(2<<3)
#define ICM20_ACCEL_FS_16G			(3<<3)
//角速度量程
#define ICM20_GYRO_FS_250			(0<<3)
#define ICM20_GYRO_FS_500			(1<<3)
#define ICM20_GYRO_FS_1000			(2<<3)
#define ICM20_GYRO_FS_2000			(3<<3)
//CONFIG DPF
#define DLPF_BW_250         	0x00	//Rate=8k
#define DLPF_BW_176         	0x01
#define DLPF_BW_92          	0x02
#define DLPF_BW_41          	0x03
#define DLPF_BW_20          	0x04
#define DLPF_BW_10          	0x05
#define DLPF_BW_5           	0x06
#define DLPF_BW_328           	0x06	//Rate=8k
//ACCEL_CONFIG2
#define ACCEL_AVER_4         	(0x00<<4)	//Rate=8k
#define ACCEL_AVER_8			(0x01<<4)
#define ACCEL_AVER_16			(0x02<<4)
#define ACCEL_AVER_32			(0x03<<4)
//ACCEL_DLPF
#define ACCEL_DLPF_BW_218         	0x00	
//#define ACCEL_DLPF_BW_218         	0x01
#define ACCEL_DLPF_BW_99          	0x02
#define ACCEL_DLPF_BW_44          	0x03
#define ACCEL_DLPF_BW_21          	0x04
#define ACCEL_DLPF_BW_10          	0x05
#define ACCEL_DLPF_BW_5           	0x06
#define ACCEL_DLPF_BW_420           0x06	


uint8_t icm20602_init(void);

uint8_t icm20602_set_gyro_fullscale(uint8_t fs);
uint8_t icm20602_set_accel_fullscale(uint8_t fs);
uint8_t icm20602_get_accel_adc(int16_t *accel);
uint8_t icm20602_get_gyro_adc(int16_t *gyro);
uint8_t icm20602_get_gyro(float *gyro);
uint8_t icm20602_get_accel(float *accel);
float icm20602_get_temp(void);

#endif

四、实验效果

成功驱动icm20602,在主函数里将读取到的原始数据通过串口打印:

STM32使用cubemx、HAL库硬件SPI驱动ICM20602_第4张图片

 

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