drivers: sensor: Add SI7060 temperature sensor driver

Add SI7060 temperature sensor driver

Signed-off-by: Iosif Macesanu <iosif@actinius.com>
This commit is contained in:
Iosif Macesanu 2019-10-14 17:46:01 +02:00 committed by Maureen Helm
commit 884485667d
9 changed files with 191 additions and 0 deletions

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@ -50,6 +50,7 @@ add_subdirectory_ifdef(CONFIG_QDEC_NRFX qdec_nrfx)
add_subdirectory_ifdef(CONFIG_TEMP_NRF5 nrf5)
add_subdirectory_ifdef(CONFIG_SHT3XD sht3xd)
add_subdirectory_ifdef(CONFIG_SI7006 si7006)
add_subdirectory_ifdef(CONFIG_SI7060 si7060)
add_subdirectory_ifdef(CONFIG_STTS751 stts751)
add_subdirectory_ifdef(CONFIG_SX9500 sx9500)
add_subdirectory_ifdef(CONFIG_TH02 th02)

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@ -125,6 +125,8 @@ source "drivers/sensor/sht3xd/Kconfig"
source "drivers/sensor/si7006/Kconfig"
source "drivers/sensor/si7060/Kconfig"
source "drivers/sensor/stts751/Kconfig"
source "drivers/sensor/sx9500/Kconfig"

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@ -0,0 +1,5 @@
# SPDX-License-Identifier: Apache-2.0
zephyr_library()
zephyr_library_sources_ifdef(CONFIG_SI7060 si7060.c)

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@ -0,0 +1,12 @@
# Kconfig - SI7060 temperature sensor configuration options #
#
# Copyright (c) 2019 Actinius
#
# SPDX-License-Identifier: Apache-2.0
#
menuconfig SI7060
bool "SI7060 Temperature Sensor"
depends on (I2C && HAS_DTS_I2C)
help
Enable driver for SI7060 temperature sensors.

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@ -0,0 +1,134 @@
/*
* Copyright (c) 2019 Actinius
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <device.h>
#include <drivers/i2c.h>
#include <drivers/sensor.h>
#include <logging/log.h>
#include "si7060.h"
#define SIGN_BIT_MASK 0x7F
LOG_MODULE_REGISTER(si7060, CONFIG_SENSOR_LOG_LEVEL);
struct si7060_data {
struct device *i2c_dev;
u16_t temperature;
};
static int si7060_reg_read(struct si7060_data *drv_data, u8_t reg,
u8_t *val)
{
if (i2c_reg_read_byte(drv_data->i2c_dev,
DT_INST_0_SILABS_SI7060_BASE_ADDRESS, reg, val)) {
return -EIO;
}
return 0;
}
static int si7060_reg_write(struct si7060_data *drv_data, u8_t reg,
u8_t val)
{
return i2c_reg_write_byte(drv_data->i2c_dev,
DT_INST_0_SILABS_SI7060_BASE_ADDRESS, reg, val);
}
static int si7060_sample_fetch(struct device *dev, enum sensor_channel chan)
{
struct si7060_data *drv_data = dev->driver_data;
if (si7060_reg_write(drv_data, SI7060_REG_CONFIG,
SI7060_ONE_BURST_VALUE) != 0) {
return -EIO;
}
int retval;
u8_t dspsigm;
u8_t dspsigl;
retval = si7060_reg_read(drv_data, SI7060_REG_TEMP_HIGH,
&dspsigm);
retval += si7060_reg_read(drv_data, SI7060_REG_TEMP_LOW,
&dspsigl);
if (retval == 0) {
drv_data->temperature = (256 * (dspsigm & SIGN_BIT_MASK))
+ dspsigl;
} else {
LOG_ERR("Read register err");
}
LOG_DBG("Sample_fetch retval: %d", retval);
return retval;
}
static int si7060_channel_get(struct device *dev, enum sensor_channel chan,
struct sensor_value *val)
{
struct si7060_data *drv_data = dev->driver_data;
s32_t uval;
if (chan == SENSOR_CHAN_AMBIENT_TEMP) {
uval = ((55 * 160) + (drv_data->temperature - 16384)) >> 4;
val->val1 = uval / 10;
val->val2 = (uval % 10) * 100000;
LOG_DBG("Temperature = val1:%d, val2:%d", val->val1, val->val2);
return 0;
} else {
return -ENOTSUP;
}
}
static const struct sensor_driver_api si7060_api = {
.sample_fetch = &si7060_sample_fetch,
.channel_get = &si7060_channel_get,
};
static int si7060_chip_init(struct device *dev)
{
struct si7060_data *drv_data = dev->driver_data;
u8_t value;
drv_data->i2c_dev = device_get_binding(
DT_INST_0_SILABS_SI7060_BUS_NAME);
if (!drv_data->i2c_dev) {
LOG_ERR("Failed to get pointer to %s device!",
DT_INST_0_SILABS_SI7060_BUS_NAME);
return -EINVAL;
}
if (si7060_reg_read(drv_data, SI7060_REG_CHIP_INFO,
&value) != 0) {
return -EIO;
}
if ((value >> 4) != SI7060_CHIP_ID_VALUE) {
LOG_ERR("Bad chip id 0x%x", value);
return -ENOTSUP;
}
return 0;
}
static int si7060_init(struct device *dev)
{
if (si7060_chip_init(dev) < 0) {
return -EINVAL;
}
return 0;
}
static struct si7060_data si_data;
DEVICE_AND_API_INIT(si7060, DT_INST_0_SILABS_SI7060_LABEL, si7060_init,
&si_data, NULL, POST_KERNEL, CONFIG_SENSOR_INIT_PRIORITY, &si7060_api);

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@ -0,0 +1,19 @@
/*
* Copyright (c) 2019 Actinius
*
* SPDX-License-Identifier: Apache-2.0
*/
#ifndef _SI7060_H
#define _SI7060_H
/* Si7060 register addresses */
#define SI7060_REG_CHIP_INFO 0xC0
#define SI7060_REG_TEMP_HIGH 0xC1
#define SI7060_REG_TEMP_LOW 0xC2
#define SI7060_REG_CONFIG 0xC4
#define SI7060_CHIP_ID_VALUE 0x01
#define SI7060_ONE_BURST_VALUE 0x04
#endif /* _SI7060_H */

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@ -0,0 +1,11 @@
# Copyright (c) 2019, Actinius
# SPDX-License-Identifier: Apache-2.0
title: Si7060 Temperature sensor
description: >
This is a representation of Si7060 Temperature sensor
compatible: "silabs,si7060"
include: i2c-device.yaml

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@ -180,6 +180,12 @@
#define DT_INST_0_SILABS_SI7006_BUS_NAME ""
#endif
#ifndef DT_INST_0_SILABS_SI7060_LABEL
#define DT_INST_0_SILABS_SI7060_LABEL ""
#define DT_INST_0_SILABS_SI7060_BASE_ADDRESS 0x00
#define DT_INST_0_SILABS_SI7060_BUS_NAME ""
#endif
#ifndef DT_INST_0_ST_LIS2DS12_LABEL
#define DT_INST_0_ST_LIS2DS12_LABEL ""
#define DT_INST_0_ST_LIS2DS12_BUS_NAME ""

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@ -26,6 +26,7 @@ CONFIG_MCP9808=y
CONFIG_MPU6050=y
CONFIG_SHT3XD=y
CONFIG_SI7006=y
CONFIG_SI7060=y
CONFIG_SX9500=y
CONFIG_TEMP_NRF5=y
CONFIG_TH02=y