blob: a60f3181848f5e387229e0805f2a5ab336b79f17 [file] [log] [blame]
/* ST Microelectronics IIS2DH 3-axis accelerometer driver
*
* Copyright (c) 2020 STMicroelectronics
*
* SPDX-License-Identifier: Apache-2.0
*
* Datasheet:
* https://www.st.com/resource/en/datasheet/iis2dh.pdf
*/
#define DT_DRV_COMPAT st_iis2dh
#include <string.h>
#include <zephyr/drivers/i2c.h>
#include <zephyr/logging/log.h>
#include "iis2dh.h"
#if DT_ANY_INST_ON_BUS_STATUS_OKAY(i2c)
LOG_MODULE_DECLARE(IIS2DH, CONFIG_SENSOR_LOG_LEVEL);
static int iis2dh_i2c_read(const struct device *dev, uint8_t reg_addr, uint8_t *value, uint16_t len)
{
const struct iis2dh_device_config *config = dev->config;
return i2c_burst_read_dt(&config->i2c, reg_addr | 0x80, value, len);
}
static int iis2dh_i2c_write(const struct device *dev, uint8_t reg_addr, uint8_t *value,
uint16_t len)
{
const struct iis2dh_device_config *config = dev->config;
return i2c_burst_write_dt(&config->i2c, reg_addr | 0x80, value, len);
}
stmdev_ctx_t iis2dh_i2c_ctx = {
.read_reg = (stmdev_read_ptr) iis2dh_i2c_read,
.write_reg = (stmdev_write_ptr) iis2dh_i2c_write,
.mdelay = (stmdev_mdelay_ptr) stmemsc_mdelay,
};
int iis2dh_i2c_init(const struct device *dev)
{
struct iis2dh_data *data = dev->data;
const struct iis2dh_device_config *config = dev->config;
if (!device_is_ready(config->i2c.bus)) {
LOG_ERR("Bus device is not ready");
return -ENODEV;
}
data->ctx = &iis2dh_i2c_ctx;
data->ctx->handle = (void *)dev;
return 0;
}
#endif /* DT_ANY_INST_ON_BUS_STATUS_OKAY(i2c) */