sensor/bmi160.c:provides work in character device mode and UORB communication mode.

create a new bmi160.h file.

Signed-off-by: likun17 <likun17@xiaomi.com>
This commit is contained in:
likun17 2023-08-14 20:58:40 +08:00 committed by Mateusz Szafoni
parent 8a13da322d
commit bc066af50a
5 changed files with 544 additions and 469 deletions

View file

@ -161,6 +161,14 @@ config SENSORS_BMI160
if SENSORS_BMI160
config SENSORS_BMI160_UORB
bool "BMI160 UORB Interface"
default n
select UORB
---help---
Enables Work with the UORB or Character Device interface.
If not set, the Character Device is used by default.
choice
prompt "BMI160 Interface"
default SENSORS_BMI160_SPI

View file

@ -137,8 +137,12 @@ ifeq ($(CONFIG_SENSORS_BMG160),y)
endif
ifeq ($(CONFIG_SENSORS_BMI160),y)
ifeq ($(CONFIG_SENSORS_BMI160_UORB),y)
CSRCS += bmi160_uorb.c
else
CSRCS += bmi160.c
endif
endif
ifeq ($(CONFIG_SENSORS_BMI270),y)
CSRCS += bmi270.c

View file

@ -22,19 +22,7 @@
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <stdlib.h>
#include <fixedmath.h>
#include <assert.h>
#include <errno.h>
#include <debug.h>
#include <nuttx/kmalloc.h>
#include <nuttx/fs/fs.h>
#include <nuttx/spi/spi.h>
#include <nuttx/i2c/i2c_master.h>
#include <nuttx/sensors/bmi160.h>
#include "bmi160.h"
#if defined(CONFIG_SENSORS_BMI160)
@ -42,203 +30,14 @@
* Pre-processor Definitions
****************************************************************************/
#define DEVID 0xd1
/* I2C Address
*
* NOTE: If SDO pin is pulled to VDDIO, use 0x69
*/
#ifdef CONFIG_BMI160_I2C_ADDR_68
#define BMI160_I2C_ADDR 0x68
#else
#define BMI160_I2C_ADDR 0x69
#endif
#define BMI160_I2C_FREQ 400000
#define BMI160_CHIP_ID (0x00) /* Chip ID */
#define BMI160_ERROR (0x02) /* Error register */
#define BMI160_PMU_STAT (0x03) /* Current power mode */
#define BMI160_DATA_0 (0x04) /* MAG X 7:0 (LSB) */
#define BMI160_DATA_1 (0x05) /* MAG X 15:8 (MSB) */
#define BMI160_DATA_2 (0x06) /* MAG Y 7:0 (LSB) */
#define BMI160_DATA_3 (0x07) /* MAG Y 15:8 (MSB) */
#define BMI160_DATA_4 (0x08) /* MAG Z 7:0 (LSB) */
#define BMI160_DATA_5 (0x09) /* MAG Z 15:8 (MSB) */
#define BMI160_DATA_6 (0x0A) /* RHALL 7:0 (LSB) */
#define BMI160_DATA_7 (0x0B) /* RHALL 15:8 (MSB) */
#define BMI160_DATA_8 (0x0C) /* GYR X 7:0 (LSB) */
#define BMI160_DATA_9 (0x0D) /* GYR X 15:8 (MSB) */
#define BMI160_DATA_10 (0x0E) /* GYR Y 7:0 (LSB) */
#define BMI160_DATA_11 (0x0F) /* GYR Y 15:8 (MSB) */
#define BMI160_DATA_12 (0x10) /* GYR Z 7:0 (LSB) */
#define BMI160_DATA_13 (0x11) /* GYR Z 15:8 (MSB) */
#define BMI160_DATA_14 (0x12) /* ACC X 7:0 (LSB) */
#define BMI160_DATA_15 (0x13) /* ACC X 15:8 (MSB) */
#define BMI160_DATA_16 (0x14) /* ACC Y 7:0 (LSB) */
#define BMI160_DATA_17 (0x15) /* ACC Y 15:8 (MSB) */
#define BMI160_DATA_18 (0x16) /* ACC Z 7:0 (LSB) */
#define BMI160_DATA_19 (0x17) /* ACC Z 15:8 (MSB) */
#define BMI160_SENSORTIME_0 (0x18) /* Sensor time 0 */
#define BMI160_SENSORTIME_1 (0x19) /* Sensor time 1 */
#define BMI160_SENSORTIME_2 (0x1A) /* Sensor time 2 */
#define BMI160_STAT (0x1B) /* Status register */
#define BMI160_INTR_STAT_0 (0x1C) /* Interrupt status */
#define BMI160_INTR_STAT_1 (0x1D)
#define BMI160_INTR_STAT_2 (0x1E)
#define BMI160_INTR_STAT_3 (0x1F)
#define BMI160_TEMPERATURE_0 (0x20) /* Temperature */
#define BMI160_TEMPERATURE_1 (0x21)
#define BMI160_FIFO_LENGTH_0 (0x22) /* FIFO length */
#define BMI160_FIFO_LENGTH_1 (0x23)
#define BMI160_FIFO_DATA (0x24)
#define BMI160_ACCEL_CONFIG (0x40) /* ACCEL config for ODR, bandwidth and undersampling */
#define BMI160_ACCEL_RANGE (0x41) /* ACCEL range */
#define BMI160_GYRO_CONFIG (0x42) /* GYRO config for ODR and bandwidth */
#define BMI160_GYRO_RANGE (0x43) /* GYRO range */
#define BMI160_MAG_CONFIG (0x44) /* MAG config for ODR */
#define BMI160_FIFO_DOWN (0x45) /* GYRO and ACCEL downsampling rates for FIFO */
#define BMI160_FIFO_CONFIG_0 (0x46) /* FIFO config */
#define BMI160_FIFO_CONFIG_1 (0x47)
#define BMI160_MAG_IF_0 (0x4B) /* MAG interface */
#define BMI160_MAG_IF_1 (0x4C)
#define BMI160_MAG_IF_2 (0x4D)
#define BMI160_MAG_IF_3 (0x4E)
#define BMI160_MAG_IF_4 (0x4F)
#define BMI160_INTR_ENABLE_0 (0x50) /* Interrupt enable */
#define BMI160_INTR_ENABLE_1 (0x51)
#define BMI160_INTR_ENABLE_2 (0x52)
#define BMI160_INTR_OUT_CTRL (0x53)
#define BMI160_INTR_LATCH (0x54) /* Latch duration */
#define BMI160_INTR_MAP_0 (0x55) /* Map interrupt */
#define BMI160_INTR_MAP_1 (0x56)
#define BMI160_INTR_MAP_2 (0x57)
#define BMI160_INTR_DATA_0 (0x58) /* Data source */
#define BMI160_INTR_DATA_1 (0x59)
#define BMI160_INTR_LOWHIGH_0 (0x5A) /* Threshold interrupt */
#define BMI160_INTR_LOWHIGH_1 (0x5B)
#define BMI160_INTR_LOWHIGH_2 (0x5C)
#define BMI160_INTR_LOWHIGH_3 (0x5D)
#define BMI160_INTR_LOWHIGH_4 (0x5E)
#define BMI160_INTR_MOTION_0 (0x5F)
#define BMI160_INTR_MOTION_1 (0x60)
#define BMI160_INTR_MOTION_2 (0x61)
#define BMI160_INTR_MOTION_3 (0x62)
#define BMI160_INTR_TAP_0 (0x63)
#define BMI160_INTR_TAP_1 (0x64)
#define BMI160_INTR_ORIENT_0 (0x65)
#define BMI160_INTR_ORIENT_1 (0x66)
#define BMI160_INTR_FLAT_0 (0x67)
#define BMI160_INTR_FLAT_1 (0x68)
#define BMI160_FOC_CONFIG (0x69) /* Fast offset configuration */
#define BMI160_CONFIG (0x6A) /* Miscellaneous configuration */
#define BMI160_IF_CONFIG (0x6B) /* Serial interface configuration */
#define BMI160_PMU_TRIGGER (0x6C) /* GYRO power mode trigger */
#define BMI160_SELF_TEST (0x6D) /* Self test */
#define BMI160_NV_CONFIG (0x70) /* SPI/I2C selection */
#define BMI160_OFFSET_0 (0x71) /* ACCEL and GYRO offset */
#define BMI160_OFFSET_1 (0x72)
#define BMI160_OFFSET_2 (0x73)
#define BMI160_OFFSET_3 (0x74)
#define BMI160_OFFSET_4 (0x75)
#define BMI160_OFFSET_5 (0x76)
#define BMI160_OFFSET_6 (0x77)
#define BMI160_STEP_COUNT_0 (0x78) /* Step counter interrupt */
#define BMI160_STEP_COUNT_1 (0x79)
#define BMI160_STEP_CONFIG_0 (0x7A) /* Step counter configuration */
#define BMI160_STEP_CONFIG_1 (0x7B)
#define BMI160_CMD (0x7e) /* Command register */
/* Register 0x40 - ACCEL_CONFIG accel bandwidth */
#define ACCEL_OSR4_AVG1 (0 << 4)
#define ACCEL_OSR2_AVG2 (1 << 4)
#define ACCEL_NORMAL_AVG4 (2 << 4)
#define ACCEL_CIC_AVG8 (3 << 4)
#define ACCEL_RES_AVG2 (4 << 4)
#define ACCEL_RES_AVG4 (5 << 4)
#define ACCEL_RES_AVG8 (6 << 4)
#define ACCEL_RES_AVG16 (7 << 4)
#define ACCEL_RES_AVG32 (8 << 4)
#define ACCEL_RES_AVG64 (9 << 4)
#define ACCEL_RES_AVG128 (10 << 4)
#define ACCEL_ODR_0_78HZ (0x01)
#define ACCEL_ODR_1_56HZ (0x02)
#define ACCEL_ODR_3_12HZ (0x03)
#define ACCEL_ODR_6_25HZ (0x04)
#define ACCEL_ODR_12_5HZ (0x05)
#define ACCEL_ODR_25HZ (0x06)
#define ACCEL_ODR_50HZ (0x07)
#define ACCEL_ODR_100HZ (0x08)
#define ACCEL_ODR_200HZ (0x09)
#define ACCEL_ODR_400HZ (0x0A)
#define ACCEL_ODR_800HZ (0x0B)
#define ACCEL_ODR_1600HZ (0x0C)
/* Register 0x42 - GYRO_CONFIG accel bandwidth */
#define GYRO_OSR4_MODE (0x00 << 4)
#define GYRO_OSR2_MODE (0x01 << 4)
#define GYRO_NORMAL_MODE (0x02 << 4)
#define GYRO_CIC_MODE (0x03 << 4)
#define GYRO_ODR_25HZ (0x06)
#define GYRO_ODR_50HZ (0x07)
#define GYRO_ODR_100HZ (0x08)
#define GYRO_ODR_200HZ (0x09)
#define GYRO_ODR_400HZ (0x0A)
#define GYRO_ODR_800HZ (0x0B)
#define GYRO_ODR_1600HZ (0x0C)
#define GYRO_ODR_3200HZ (0x0D)
/* Register 0x7b STEP_CONFIG_1 */
#define STEP_CNT_EN (1 << 3)
/* Register 0x7e - CMD */
#define ACCEL_PM_SUSPEND (0X10)
#define ACCEL_PM_NORMAL (0x11)
#define ACCEL_PM_LOWPOWER (0X12)
#define GYRO_PM_SUSPEND (0x14)
#define GYRO_PM_NORMAL (0x15)
#define GYRO_PM_FASTSTARTUP (0x17)
#define MAG_PM_SUSPEND (0x18)
#define MAG_PM_NORMAL (0x19)
#define MAG_PM_LOWPOWER (0x1A)
/****************************************************************************
* Private Types
****************************************************************************/
struct bmi160_dev_s
{
#ifdef CONFIG_SENSORS_BMI160_I2C
FAR struct i2c_master_s *i2c; /* I2C interface */
uint8_t addr; /* I2C address */
int freq; /* Frequency <= 3.4MHz */
#else /* CONFIG_SENSORS_BMI160_SPI */
FAR struct spi_dev_s *spi; /* SPI interface */
#endif
};
/****************************************************************************
* Private Functions
****************************************************************************/
static uint8_t bmi160_getreg8(FAR struct bmi160_dev_s *priv,
uint8_t regaddr);
static void bmi160_putreg8(FAR struct bmi160_dev_s *priv, uint8_t regaddr,
uint8_t regval);
static uint16_t bmi160_getreg16(FAR struct bmi160_dev_s *priv,
uint8_t regaddr);
static void bmi160_getregs(FAR struct bmi160_dev_s *priv, uint8_t regaddr,
uint8_t *regval, int len);
/* Character driver methods */
static int bmi160_open(FAR struct file *filep);
@ -248,8 +47,6 @@ static ssize_t bmi160_read(FAR struct file *filep, FAR char *buffer,
static int bmi160_ioctl(FAR struct file *filep, int cmd,
unsigned long arg);
static int bmi160_checkid(FAR struct bmi160_dev_s *priv);
/****************************************************************************
* Private Data
****************************************************************************/
@ -266,264 +63,6 @@ static const struct file_operations g_bmi160fops =
bmi160_ioctl, /* ioctl */
};
/****************************************************************************
* Name: bmi160_configspi
*
* Description:
*
****************************************************************************/
#ifdef CONFIG_SENSORS_BMI160_SPI
static inline void bmi160_configspi(FAR struct spi_dev_s *spi)
{
/* Configure SPI for the BMI160 */
SPI_SETMODE(spi, SPIDEV_MODE0);
SPI_SETBITS(spi, 8);
SPI_HWFEATURES(spi, 0);
SPI_SETFREQUENCY(spi, BMI160_SPI_MAXFREQUENCY);
}
#endif
/****************************************************************************
* Name: bmi160_getreg8
*
* Description:
* Read from an 8-bit BMI160 register
*
****************************************************************************/
static uint8_t bmi160_getreg8(FAR struct bmi160_dev_s *priv, uint8_t regaddr)
{
uint8_t regval = 0;
#ifdef CONFIG_SENSORS_BMI160_I2C
struct i2c_msg_s msg[2];
int ret;
msg[0].frequency = priv->freq;
msg[0].addr = priv->addr;
msg[0].flags = I2C_M_NOSTOP;
msg[0].buffer = &regaddr;
msg[0].length = 1;
msg[1].frequency = priv->freq;
msg[1].addr = priv->addr;
msg[1].flags = I2C_M_READ;
msg[1].buffer = &regval;
msg[1].length = 1;
ret = I2C_TRANSFER(priv->i2c, msg, 2);
if (ret < 0)
{
snerr("I2C_TRANSFER failed: %d\n", ret);
}
#else /* CONFIG_SENSORS_BMI160_SPI */
/* If SPI bus is shared then lock and configure it */
SPI_LOCK(priv->spi, true);
bmi160_configspi(priv->spi);
/* Select the BMI160 */
SPI_SELECT(priv->spi, SPIDEV_ACCELEROMETER(0), true);
/* Send register to read and get the next byte */
SPI_SEND(priv->spi, regaddr | 0x80);
SPI_RECVBLOCK(priv->spi, &regval, 1);
/* Deselect the BMI160 */
SPI_SELECT(priv->spi, SPIDEV_ACCELEROMETER(0), false);
/* Unlock bus */
SPI_LOCK(priv->spi, false);
#endif
return regval;
}
/****************************************************************************
* Name: bmi160_putreg8
*
* Description:
* Write a value to an 8-bit BMI160 register
*
****************************************************************************/
static void bmi160_putreg8(FAR struct bmi160_dev_s *priv, uint8_t regaddr,
uint8_t regval)
{
#ifdef CONFIG_SENSORS_BMI160_I2C
struct i2c_msg_s msg[2];
int ret;
uint8_t txbuffer[2];
txbuffer[0] = regaddr;
txbuffer[1] = regval;
msg[0].frequency = priv->freq;
msg[0].addr = priv->addr;
msg[0].flags = 0;
msg[0].buffer = txbuffer;
msg[0].length = 2;
ret = I2C_TRANSFER(priv->i2c, msg, 1);
if (ret < 0)
{
snerr("I2C_TRANSFER failed: %d\n", ret);
}
#else /* CONFIG_SENSORS_BMI160_SPI */
/* If SPI bus is shared then lock and configure it */
SPI_LOCK(priv->spi, true);
bmi160_configspi(priv->spi);
/* Select the BMI160 */
SPI_SELECT(priv->spi, SPIDEV_ACCELEROMETER(0), true);
/* Send register address and set the value */
SPI_SEND(priv->spi, regaddr);
SPI_SEND(priv->spi, regval);
/* Deselect the BMI160 */
SPI_SELECT(priv->spi, SPIDEV_ACCELEROMETER(0), false);
/* Unlock bus */
SPI_LOCK(priv->spi, false);
#endif
}
/****************************************************************************
* Name: bmi160_getreg16
*
* Description:
* Read 16-bits of data from an BMI160 register
*
****************************************************************************/
static uint16_t bmi160_getreg16(FAR struct bmi160_dev_s *priv,
uint8_t regaddr)
{
uint16_t regval = 0;
#ifdef CONFIG_SENSORS_BMI160_I2C
struct i2c_msg_s msg[2];
int ret;
msg[0].frequency = priv->freq;
msg[0].addr = priv->addr;
msg[0].flags = I2C_M_NOSTOP;
msg[0].buffer = &regaddr;
msg[0].length = 1;
msg[1].frequency = priv->freq;
msg[1].addr = priv->addr;
msg[1].flags = I2C_M_READ;
msg[1].buffer = (uint8_t *)&regval;
msg[1].length = 2;
ret = I2C_TRANSFER(priv->i2c, msg, 2);
if (ret < 0)
{
snerr("I2C_TRANSFER failed: %d\n", ret);
}
#else /* CONFIG_SENSORS_BMI160_SPI */
/* If SPI bus is shared then lock and configure it */
SPI_LOCK(priv->spi, true);
bmi160_configspi(priv->spi);
/* Select the BMI160 */
SPI_SELECT(priv->spi, SPIDEV_ACCELEROMETER(0), true);
/* Send register to read and get the next 2 bytes */
SPI_SEND(priv->spi, regaddr | 0x80);
SPI_RECVBLOCK(priv->spi, &regval, 2);
/* Deselect the BMI160 */
SPI_SELECT(priv->spi, SPIDEV_ACCELEROMETER(0), false);
/* Unlock bus */
SPI_LOCK(priv->spi, false);
#endif
return regval;
}
/****************************************************************************
* Name: bmi160_getregs
*
* Description:
* Read cnt bytes from specified dev_addr and reg_addr
*
****************************************************************************/
static void bmi160_getregs(FAR struct bmi160_dev_s *priv, uint8_t regaddr,
uint8_t *regval, int len)
{
#ifdef CONFIG_SENSORS_BMI160_I2C
struct i2c_msg_s msg[2];
int ret;
msg[0].frequency = priv->freq;
msg[0].addr = priv->addr;
msg[0].flags = I2C_M_NOSTOP;
msg[0].buffer = &regaddr;
msg[0].length = 1;
msg[1].frequency = priv->freq;
msg[1].addr = priv->addr;
msg[1].flags = I2C_M_READ;
msg[1].buffer = regval;
msg[1].length = len;
ret = I2C_TRANSFER(priv->i2c, msg, 2);
if (ret < 0)
{
snerr("I2C_TRANSFER failed: %d\n", ret);
}
#else /* CONFIG_SENSORS_BMI160_SPI */
/* If SPI bus is shared then lock and configure it */
SPI_LOCK(priv->spi, true);
bmi160_configspi(priv->spi);
/* Select the BMI160 */
SPI_SELECT(priv->spi, SPIDEV_ACCELEROMETER(0), true);
/* Send register to read and get the next 2 bytes */
SPI_SEND(priv->spi, regaddr | 0x80);
SPI_RECVBLOCK(priv->spi, regval, len);
/* Deselect the BMI160 */
SPI_SELECT(priv->spi, SPIDEV_ACCELEROMETER(0), false);
/* Unlock bus */
SPI_LOCK(priv->spi, false);
#endif
}
/****************************************************************************
* Name: bmi160_set_normal_imu
*
@ -608,7 +147,7 @@ static ssize_t bmi160_read(FAR struct file *filep, FAR char *buffer,
if (len < sizeof(struct accel_gyro_st_s))
{
snerr("Expected buffer size is %d\n", sizeof(struct accel_gyro_st_s));
snerr("Expected buffer size is %lu\n", sizeof(struct accel_gyro_st_s));
return 0;
}
@ -686,6 +225,10 @@ static int bmi160_ioctl(FAR struct file *filep, int cmd, unsigned long arg)
return ret;
}
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: bmi160_checkid
*
@ -694,7 +237,7 @@ static int bmi160_ioctl(FAR struct file *filep, int cmd, unsigned long arg)
*
****************************************************************************/
static int bmi160_checkid(FAR struct bmi160_dev_s *priv)
int bmi160_checkid(FAR struct bmi160_dev_s *priv)
{
uint8_t devid = 0;
@ -713,6 +256,244 @@ static int bmi160_checkid(FAR struct bmi160_dev_s *priv)
return OK;
}
/****************************************************************************
* Name: bmi160_getreg8
*
* Description:
* Read from an 8-bit BMI160 register
*
****************************************************************************/
uint8_t bmi160_getreg8(FAR struct bmi160_dev_s *priv, uint8_t regaddr)
{
uint8_t regval = 0;
#ifdef CONFIG_SENSORS_BMI160_I2C
struct i2c_msg_s msg[2];
int ret;
msg[0].frequency = priv->freq;
msg[0].addr = priv->addr;
msg[0].flags = I2C_M_NOSTOP;
msg[0].buffer = &regaddr;
msg[0].length = 1;
msg[1].frequency = priv->freq;
msg[1].addr = priv->addr;
msg[1].flags = I2C_M_READ;
msg[1].buffer = &regval;
msg[1].length = 1;
ret = I2C_TRANSFER(priv->i2c, msg, 2);
if (ret < 0)
{
snerr("I2C_TRANSFER failed: %d\n", ret);
}
#else /* CONFIG_SENSORS_BMI160_SPI */
/* If SPI bus is shared then lock and configure it */
SPI_LOCK(priv->spi, true);
bmi160_configspi(priv->spi);
/* Select the BMI160 */
SPI_SELECT(priv->spi, SPIDEV_ACCELEROMETER(0), true);
/* Send register to read and get the next byte */
SPI_SEND(priv->spi, regaddr | 0x80);
SPI_RECVBLOCK(priv->spi, &regval, 1);
/* Deselect the BMI160 */
SPI_SELECT(priv->spi, SPIDEV_ACCELEROMETER(0), false);
/* Unlock bus */
SPI_LOCK(priv->spi, false);
#endif
return regval;
}
/****************************************************************************
* Name: bmi160_putreg8
*
* Description:
* Write a value to an 8-bit BMI160 register
*
****************************************************************************/
void bmi160_putreg8(FAR struct bmi160_dev_s *priv, uint8_t regaddr,
uint8_t regval)
{
#ifdef CONFIG_SENSORS_BMI160_I2C
struct i2c_msg_s msg[2];
int ret;
uint8_t txbuffer[2];
txbuffer[0] = regaddr;
txbuffer[1] = regval;
msg[0].frequency = priv->freq;
msg[0].addr = priv->addr;
msg[0].flags = 0;
msg[0].buffer = txbuffer;
msg[0].length = 2;
ret = I2C_TRANSFER(priv->i2c, msg, 1);
if (ret < 0)
{
snerr("I2C_TRANSFER failed: %d\n", ret);
}
#else /* CONFIG_SENSORS_BMI160_SPI */
/* If SPI bus is shared then lock and configure it */
SPI_LOCK(priv->spi, true);
bmi160_configspi(priv->spi);
/* Select the BMI160 */
SPI_SELECT(priv->spi, SPIDEV_ACCELEROMETER(0), true);
/* Send register address and set the value */
SPI_SEND(priv->spi, regaddr);
SPI_SEND(priv->spi, regval);
/* Deselect the BMI160 */
SPI_SELECT(priv->spi, SPIDEV_ACCELEROMETER(0), false);
/* Unlock bus */
SPI_LOCK(priv->spi, false);
#endif
}
/****************************************************************************
* Name: bmi160_getreg16
*
* Description:
* Read 16-bits of data from an BMI160 register
*
****************************************************************************/
uint16_t bmi160_getreg16(FAR struct bmi160_dev_s *priv, uint8_t regaddr)
{
uint16_t regval = 0;
#ifdef CONFIG_SENSORS_BMI160_I2C
struct i2c_msg_s msg[2];
int ret;
msg[0].frequency = priv->freq;
msg[0].addr = priv->addr;
msg[0].flags = I2C_M_NOSTOP;
msg[0].buffer = &regaddr;
msg[0].length = 1;
msg[1].frequency = priv->freq;
msg[1].addr = priv->addr;
msg[1].flags = I2C_M_READ;
msg[1].buffer = (uint8_t *)&regval;
msg[1].length = 2;
ret = I2C_TRANSFER(priv->i2c, msg, 2);
if (ret < 0)
{
snerr("I2C_TRANSFER failed: %d\n", ret);
}
#else /* CONFIG_SENSORS_BMI160_SPI */
/* If SPI bus is shared then lock and configure it */
SPI_LOCK(priv->spi, true);
bmi160_configspi(priv->spi);
/* Select the BMI160 */
SPI_SELECT(priv->spi, SPIDEV_ACCELEROMETER(0), true);
/* Send register to read and get the next 2 bytes */
SPI_SEND(priv->spi, regaddr | 0x80);
SPI_RECVBLOCK(priv->spi, &regval, 2);
/* Deselect the BMI160 */
SPI_SELECT(priv->spi, SPIDEV_ACCELEROMETER(0), false);
/* Unlock bus */
SPI_LOCK(priv->spi, false);
#endif
return regval;
}
/****************************************************************************
* Name: bmi160_getregs
*
* Description:
* Read cnt bytes from specified dev_addr and reg_addr
*
****************************************************************************/
void bmi160_getregs(FAR struct bmi160_dev_s *priv, uint8_t regaddr,
uint8_t *regval, int len)
{
#ifdef CONFIG_SENSORS_BMI160_I2C
struct i2c_msg_s msg[2];
int ret;
msg[0].frequency = priv->freq;
msg[0].addr = priv->addr;
msg[0].flags = I2C_M_NOSTOP;
msg[0].buffer = &regaddr;
msg[0].length = 1;
msg[1].frequency = priv->freq;
msg[1].addr = priv->addr;
msg[1].flags = I2C_M_READ;
msg[1].buffer = regval;
msg[1].length = len;
ret = I2C_TRANSFER(priv->i2c, msg, 2);
if (ret < 0)
{
snerr("I2C_TRANSFER failed: %d\n", ret);
}
#else /* CONFIG_SENSORS_BMI160_SPI */
/* If SPI bus is shared then lock and configure it */
SPI_LOCK(priv->spi, true);
bmi160_configspi(priv->spi);
/* Select the BMI160 */
SPI_SELECT(priv->spi, SPIDEV_ACCELEROMETER(0), true);
/* Send register to read and get the next 2 bytes */
SPI_SEND(priv->spi, regaddr | 0x80);
SPI_RECVBLOCK(priv->spi, regval, len);
/* Deselect the BMI160 */
SPI_SELECT(priv->spi, SPIDEV_ACCELEROMETER(0), false);
/* Unlock bus */
SPI_LOCK(priv->spi, false);
#endif
}
/****************************************************************************
* Name: bmi160_register
*
@ -735,10 +516,9 @@ int bmi160_register(FAR const char *devpath, FAR struct i2c_master_s *dev)
int bmi160_register(FAR const char *devpath, FAR struct spi_dev_s *dev)
#endif
{
FAR struct bmi160_dev_s *priv;
int ret;
uint8_t devid = 0;
priv = kmm_malloc(sizeof(struct bmi160_dev_s));
priv = (FAR struct bmi160_dev_s *)kmm_malloc(sizeof(struct bmi160_dev_s));
if (!priv)
{
snerr("Failed to allocate instance\n");

263
drivers/sensors/bmi160.h Normal file
View file

@ -0,0 +1,263 @@
/****************************************************************************
* include/nuttx/sensors/bmi160.h
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
#ifndef __INCLUDE_NUTTX_SENSORS_BMI160_COMMOM_H
#define __INCLUDE_NUTTX_SENSORS_BMI160_COMMOM_H
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <stdlib.h>
#include <fixedmath.h>
#include <assert.h>
#include <errno.h>
#include <debug.h>
#include <nuttx/kmalloc.h>
#include <nuttx/fs/fs.h>
#include <nuttx/spi/spi.h>
#include <nuttx/i2c/i2c_master.h>
#include <nuttx/sensors/bmi160.h>
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
#define DEVID 0xd1
/* I2C Address
*
* NOTE: If SDO pin is pulled to VDDIO, use 0x69
*/
#ifdef CONFIG_BMI160_I2C_ADDR_68
#define BMI160_I2C_ADDR 0x68
#else
#define BMI160_I2C_ADDR 0x69
#endif
#define BMI160_I2C_FREQ 400000
#define BMI160_CHIP_ID (0x00) /* Chip ID */
#define BMI160_ERROR (0x02) /* Error register */
#define BMI160_PMU_STAT (0x03) /* Current power mode */
#define BMI160_DATA_0 (0x04) /* MAG X 7:0 (LSB) */
#define BMI160_DATA_1 (0x05) /* MAG X 15:8 (MSB) */
#define BMI160_DATA_2 (0x06) /* MAG Y 7:0 (LSB) */
#define BMI160_DATA_3 (0x07) /* MAG Y 15:8 (MSB) */
#define BMI160_DATA_4 (0x08) /* MAG Z 7:0 (LSB) */
#define BMI160_DATA_5 (0x09) /* MAG Z 15:8 (MSB) */
#define BMI160_DATA_6 (0x0A) /* RHALL 7:0 (LSB) */
#define BMI160_DATA_7 (0x0B) /* RHALL 15:8 (MSB) */
#define BMI160_DATA_8 (0x0C) /* GYR X 7:0 (LSB) */
#define BMI160_DATA_9 (0x0D) /* GYR X 15:8 (MSB) */
#define BMI160_DATA_10 (0x0E) /* GYR Y 7:0 (LSB) */
#define BMI160_DATA_11 (0x0F) /* GYR Y 15:8 (MSB) */
#define BMI160_DATA_12 (0x10) /* GYR Z 7:0 (LSB) */
#define BMI160_DATA_13 (0x11) /* GYR Z 15:8 (MSB) */
#define BMI160_DATA_14 (0x12) /* ACC X 7:0 (LSB) */
#define BMI160_DATA_15 (0x13) /* ACC X 15:8 (MSB) */
#define BMI160_DATA_16 (0x14) /* ACC Y 7:0 (LSB) */
#define BMI160_DATA_17 (0x15) /* ACC Y 15:8 (MSB) */
#define BMI160_DATA_18 (0x16) /* ACC Z 7:0 (LSB) */
#define BMI160_DATA_19 (0x17) /* ACC Z 15:8 (MSB) */
#define BMI160_SENSORTIME_0 (0x18) /* Sensor time 0 */
#define BMI160_SENSORTIME_1 (0x19) /* Sensor time 1 */
#define BMI160_SENSORTIME_2 (0x1A) /* Sensor time 2 */
#define BMI160_STAT (0x1B) /* Status register */
#define BMI160_INTR_STAT_0 (0x1C) /* Interrupt status */
#define BMI160_INTR_STAT_1 (0x1D)
#define BMI160_INTR_STAT_2 (0x1E)
#define BMI160_INTR_STAT_3 (0x1F)
#define BMI160_TEMPERATURE_0 (0x20) /* Temperature */
#define BMI160_TEMPERATURE_1 (0x21)
#define BMI160_FIFO_LENGTH_0 (0x22) /* FIFO length */
#define BMI160_FIFO_LENGTH_1 (0x23)
#define BMI160_FIFO_DATA (0x24)
#define BMI160_ACCEL_CONFIG (0x40) /* ACCEL config for ODR, bandwidth and undersampling */
#define BMI160_ACCEL_RANGE (0x41) /* ACCEL range */
#define BMI160_GYRO_CONFIG (0x42) /* GYRO config for ODR and bandwidth */
#define BMI160_GYRO_RANGE (0x43) /* GYRO range */
#define BMI160_MAG_CONFIG (0x44) /* MAG config for ODR */
#define BMI160_FIFO_DOWN (0x45) /* GYRO and ACCEL downsampling rates for FIFO */
#define BMI160_FIFO_CONFIG_0 (0x46) /* FIFO config */
#define BMI160_FIFO_CONFIG_1 (0x47)
#define BMI160_MAG_IF_0 (0x4B) /* MAG interface */
#define BMI160_MAG_IF_1 (0x4C)
#define BMI160_MAG_IF_2 (0x4D)
#define BMI160_MAG_IF_3 (0x4E)
#define BMI160_MAG_IF_4 (0x4F)
#define BMI160_INTR_ENABLE_0 (0x50) /* Interrupt enable */
#define BMI160_INTR_ENABLE_1 (0x51)
#define BMI160_INTR_ENABLE_2 (0x52)
#define BMI160_INTR_OUT_CTRL (0x53)
#define BMI160_INTR_LATCH (0x54) /* Latch duration */
#define BMI160_INTR_MAP_0 (0x55) /* Map interrupt */
#define BMI160_INTR_MAP_1 (0x56)
#define BMI160_INTR_MAP_2 (0x57)
#define BMI160_INTR_DATA_0 (0x58) /* Data source */
#define BMI160_INTR_DATA_1 (0x59)
#define BMI160_INTR_LOWHIGH_0 (0x5A) /* Threshold interrupt */
#define BMI160_INTR_LOWHIGH_1 (0x5B)
#define BMI160_INTR_LOWHIGH_2 (0x5C)
#define BMI160_INTR_LOWHIGH_3 (0x5D)
#define BMI160_INTR_LOWHIGH_4 (0x5E)
#define BMI160_INTR_MOTION_0 (0x5F)
#define BMI160_INTR_MOTION_1 (0x60)
#define BMI160_INTR_MOTION_2 (0x61)
#define BMI160_INTR_MOTION_3 (0x62)
#define BMI160_INTR_TAP_0 (0x63)
#define BMI160_INTR_TAP_1 (0x64)
#define BMI160_INTR_ORIENT_0 (0x65)
#define BMI160_INTR_ORIENT_1 (0x66)
#define BMI160_INTR_FLAT_0 (0x67)
#define BMI160_INTR_FLAT_1 (0x68)
#define BMI160_FOC_CONFIG (0x69) /* Fast offset configuration */
#define BMI160_CONFIG (0x6A) /* Miscellaneous configuration */
#define BMI160_IF_CONFIG (0x6B) /* Serial interface configuration */
#define BMI160_PMU_TRIGGER (0x6C) /* GYRO power mode trigger */
#define BMI160_SELF_TEST (0x6D) /* Self test */
#define BMI160_NV_CONFIG (0x70) /* SPI/I2C selection */
#define BMI160_OFFSET_0 (0x71) /* ACCEL and GYRO offset */
#define BMI160_OFFSET_1 (0x72)
#define BMI160_OFFSET_2 (0x73)
#define BMI160_OFFSET_3 (0x74)
#define BMI160_OFFSET_4 (0x75)
#define BMI160_OFFSET_5 (0x76)
#define BMI160_OFFSET_6 (0x77)
#define BMI160_STEP_COUNT_0 (0x78) /* Step counter interrupt */
#define BMI160_STEP_COUNT_1 (0x79)
#define BMI160_STEP_CONFIG_0 (0x7A) /* Step counter configuration */
#define BMI160_STEP_CONFIG_1 (0x7B)
#define BMI160_CMD (0x7e) /* Command register */
/* Register 0x40 - ACCEL_CONFIG accel bandwidth */
#define ACCEL_OSR4_AVG1 (0 << 4)
#define ACCEL_OSR2_AVG2 (1 << 4)
#define ACCEL_NORMAL_AVG4 (2 << 4)
#define ACCEL_CIC_AVG8 (3 << 4)
#define ACCEL_RES_AVG2 (4 << 4)
#define ACCEL_RES_AVG4 (5 << 4)
#define ACCEL_RES_AVG8 (6 << 4)
#define ACCEL_RES_AVG16 (7 << 4)
#define ACCEL_RES_AVG32 (8 << 4)
#define ACCEL_RES_AVG64 (9 << 4)
#define ACCEL_RES_AVG128 (10 << 4)
#define ACCEL_ODR_0_78HZ (0x01)
#define ACCEL_ODR_1_56HZ (0x02)
#define ACCEL_ODR_3_12HZ (0x03)
#define ACCEL_ODR_6_25HZ (0x04)
#define ACCEL_ODR_12_5HZ (0x05)
#define ACCEL_ODR_25HZ (0x06)
#define ACCEL_ODR_50HZ (0x07)
#define ACCEL_ODR_100HZ (0x08)
#define ACCEL_ODR_200HZ (0x09)
#define ACCEL_ODR_400HZ (0x0A)
#define ACCEL_ODR_800HZ (0x0B)
#define ACCEL_ODR_1600HZ (0x0C)
/* Register 0x42 - GYRO_CONFIG accel bandwidth */
#define GYRO_OSR4_MODE (0x00 << 4)
#define GYRO_OSR2_MODE (0x01 << 4)
#define GYRO_NORMAL_MODE (0x02 << 4)
#define GYRO_CIC_MODE (0x03 << 4)
#define GYRO_ODR_25HZ (0x06)
#define GYRO_ODR_50HZ (0x07)
#define GYRO_ODR_100HZ (0x08)
#define GYRO_ODR_200HZ (0x09)
#define GYRO_ODR_400HZ (0x0A)
#define GYRO_ODR_800HZ (0x0B)
#define GYRO_ODR_1600HZ (0x0C)
#define GYRO_ODR_3200HZ (0x0D)
/* Register 0x7b STEP_CONFIG_1 */
#define STEP_CNT_EN (1 << 3)
/* Register 0x7e - CMD */
#define ACCEL_PM_SUSPEND (0X10)
#define ACCEL_PM_NORMAL (0x11)
#define ACCEL_PM_LOWPOWER (0X12)
#define GYRO_PM_SUSPEND (0x14)
#define GYRO_PM_NORMAL (0x15)
#define GYRO_PM_FASTSTARTUP (0x17)
#define MAG_PM_SUSPEND (0x18)
#define MAG_PM_NORMAL (0x19)
#define MAG_PM_LOWPOWER (0x1A)
/****************************************************************************
* Private Types
****************************************************************************/
/* Device struct */
struct bmi160_dev_s
{
#ifdef CONFIG_SENSORS_BMI160_I2C
FAR struct i2c_master_s *i2c; /* I2C interface */
uint8_t addr; /* I2C address */
int freq; /* Frequency <= 3.4MHz */
#else /* CONFIG_SENSORS_BMI160_SPI */
FAR struct spi_dev_s *spi; /* SPI interface */
#endif
};
/****************************************************************************
* Private Functions
****************************************************************************/
uint8_t bmi160_getreg8(FAR struct bmi160_dev_s *priv, uint8_t regaddr);
void bmi160_putreg8(FAR struct bmi160_dev_s *priv, uint8_t regaddr,
uint8_t regval);
uint16_t bmi160_getreg16(FAR struct bmi160_dev_s *priv, uint8_t regaddr);
void bmi160_getregs(FAR struct bmi160_dev_s *priv, uint8_t regaddr,
uint8_t *regval, int len);
int bmi160_checkid(FAR struct bmi160_dev_s *priv);
/****************************************************************************
* Name: bmi160_configspi
*
* Description:
*
****************************************************************************/
#ifdef CONFIG_SENSORS_BMI160_SPI
inline void bmi160_configspi(FAR struct spi_dev_s *spi)
{
/* Configure SPI for the BMI160 */
SPI_SETMODE(spi, SPIDEV_MODE0);
SPI_SETBITS(spi, 8);
SPI_HWFEATURES(spi, 0);
SPI_SETFREQUENCY(spi, BMI160_SPI_MAXFREQUENCY);
}
#endif
#endif /* __INCLUDE_NUTTX_SENSORS_BMI160_COMMOM_H */

View file

@ -131,10 +131,30 @@ extern "C"
*
****************************************************************************/
#ifdef CONFIG_SENSORS_BMI160_I2C
#ifndef CONFIG_SENSORS_BMI160_SCU
# ifdef CONFIG_SENSORS_BMI160_I2C
int bmi160_register(FAR const char *devpath, FAR struct i2c_master_s *dev);
#else /* CONFIG_BMI160_SPI */
# else /* CONFIG_BMI160_SPI */
int bmi160_register(FAR const char *devpath, FAR struct spi_dev_s *dev);
# endif
#else /* CONFIG_SENSORS_BMI160_SCU */
# ifdef CONFIG_SENSORS_BMI160_I2C
int bmi160_init(FAR struct i2c_master_s *dev, int port);
int bmi160gyro_register(FAR const char *devpath, int minor,
FAR struct i2c_master_s *dev, int port);
int bmi160accel_register(FAR const char *devpath, int minor,
FAR struct i2c_master_s *dev, int port);
# else /* CONFIG_SENSORS_BMI160_SPI */
int bmi160_init(FAR struct spi_dev_s *dev);
int bmi160gyro_register(FAR const char *devpath, int minor,
FAR struct spi_dev_s *dev);
int bmi160accel_register(FAR const char *devpath, int minor,
FAR struct spi_dev_s *dev);
# endif
#endif
#undef EXTERN