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drivers/sensor: add support to IIS2MDC magnetometer sensor

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The IIS2MDC is a 3D digital magnetometer ultra-low power sensor
for industrial applications, which can be interfaced through
either I2C or SPI bus.

https://www.st.com/resource/en/datasheet/iis2mdc.pdf

This driver is based on stmemsc i/f v1.02.

Signed-off-by: Armando Visconti <armando.visconti@st.com>
This commit is contained in:
Armando Visconti 2020-01-31 10:39:41 +01:00 • committed by Maureen Helm
commit a302786e9b
14 changed files with 933 additions and 0 deletions
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54
drivers/sensor/iis2mdc/iis2mdc_i2c.c Normal file
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/* ST Microelectronics IIS2MDC 3-axis magnetometer sensor
*
* Copyright (c) 2020 STMicroelectronics
*
* SPDX-License-Identifier: Apache-2.0
*
* Datasheet:
* https://www.st.com/resource/en/datasheet/iis2mdc.pdf
*/
#include <string.h>
#include <drivers/i2c.h>
#include <logging/log.h>
#include "iis2mdc.h"
#ifdef DT_ST_IIS2MDC_BUS_I2C
#define LOG_LEVEL CONFIG_SENSOR_LOG_LEVEL
LOG_MODULE_DECLARE(IIS2MDC);
static int iis2mdc_i2c_read(struct device *dev, u8_t reg_addr,
u8_t *value, u16_t len)
{
struct iis2mdc_data *data = dev->driver_data;
const struct iis2mdc_config *cfg = dev->config->config_info;
return i2c_burst_read(data->bus, cfg->i2c_slv_addr,
reg_addr, value, len);
}
static int iis2mdc_i2c_write(struct device *dev, u8_t reg_addr,
u8_t *value, u16_t len)
{
struct iis2mdc_data *data = dev->driver_data;
const struct iis2mdc_config *cfg = dev->config->config_info;
return i2c_burst_write(data->bus, cfg->i2c_slv_addr,
reg_addr, value, len);
}
int iis2mdc_i2c_init(struct device *dev)
{
struct iis2mdc_data *data = dev->driver_data;
data->ctx_i2c.read_reg = (stmdev_read_ptr) iis2mdc_i2c_read;
data->ctx_i2c.write_reg = (stmdev_write_ptr) iis2mdc_i2c_write;
data->ctx = &data->ctx_i2c;
data->ctx->handle = dev;
return 0;
}
#endif /* DT_ST_IIS2MDC_BUS_I2C */