88 lines
2.2 KiB
C
88 lines
2.2 KiB
C
/* ST Microelectronics LIS2DH 3-axis accelerometer driver
|
|
*
|
|
* Copyright (c) 2020 STMicroelectronics
|
|
*
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*
|
|
* Datasheet:
|
|
* https://www.st.com/resource/en/datasheet/lis2dh.pdf
|
|
*/
|
|
|
|
#define DT_DRV_COMPAT st_lis2dh
|
|
|
|
#include <string.h>
|
|
#include <zephyr/drivers/i2c.h>
|
|
#include <zephyr/logging/log.h>
|
|
|
|
#include "lis2dh.h"
|
|
|
|
#if DT_ANY_INST_ON_BUS_STATUS_OKAY(i2c)
|
|
|
|
LOG_MODULE_DECLARE(lis2dh, CONFIG_SENSOR_LOG_LEVEL);
|
|
|
|
static int lis2dh_i2c_read_data(const struct device *dev, uint8_t reg_addr,
|
|
uint8_t *value, uint8_t len)
|
|
{
|
|
const struct lis2dh_config *cfg = dev->config;
|
|
|
|
return i2c_burst_read_dt(&cfg->bus_cfg.i2c, reg_addr | LIS2DH_AUTOINCREMENT_ADDR, value,
|
|
len);
|
|
}
|
|
|
|
static int lis2dh_i2c_write_data(const struct device *dev, uint8_t reg_addr,
|
|
uint8_t *value, uint8_t len)
|
|
{
|
|
const struct lis2dh_config *cfg = dev->config;
|
|
|
|
return i2c_burst_write_dt(&cfg->bus_cfg.i2c, reg_addr | LIS2DH_AUTOINCREMENT_ADDR, value,
|
|
len);
|
|
}
|
|
|
|
static int lis2dh_i2c_read_reg(const struct device *dev, uint8_t reg_addr,
|
|
uint8_t *value)
|
|
{
|
|
const struct lis2dh_config *cfg = dev->config;
|
|
|
|
return i2c_reg_read_byte_dt(&cfg->bus_cfg.i2c, reg_addr, value);
|
|
}
|
|
|
|
static int lis2dh_i2c_write_reg(const struct device *dev, uint8_t reg_addr,
|
|
uint8_t value)
|
|
{
|
|
const struct lis2dh_config *cfg = dev->config;
|
|
|
|
return i2c_reg_write_byte_dt(&cfg->bus_cfg.i2c, reg_addr, value);
|
|
}
|
|
|
|
static int lis2dh_i2c_update_reg(const struct device *dev, uint8_t reg_addr,
|
|
uint8_t mask, uint8_t value)
|
|
{
|
|
const struct lis2dh_config *cfg = dev->config;
|
|
|
|
return i2c_reg_update_byte_dt(&cfg->bus_cfg.i2c, reg_addr, mask, value);
|
|
}
|
|
|
|
static const struct lis2dh_transfer_function lis2dh_i2c_transfer_fn = {
|
|
.read_data = lis2dh_i2c_read_data,
|
|
.write_data = lis2dh_i2c_write_data,
|
|
.read_reg = lis2dh_i2c_read_reg,
|
|
.write_reg = lis2dh_i2c_write_reg,
|
|
.update_reg = lis2dh_i2c_update_reg,
|
|
};
|
|
|
|
int lis2dh_i2c_init(const struct device *dev)
|
|
{
|
|
struct lis2dh_data *data = dev->data;
|
|
const struct lis2dh_config *cfg = dev->config;
|
|
|
|
if (!device_is_ready(cfg->bus_cfg.i2c.bus)) {
|
|
LOG_ERR("Bus device is not ready");
|
|
return -ENODEV;
|
|
}
|
|
|
|
data->hw_tf = &lis2dh_i2c_transfer_fn;
|
|
|
|
return 0;
|
|
}
|
|
#endif /* DT_ANY_INST_ON_BUS_STATUS_OKAY(i2c) */
|