103 lines
2.6 KiB
C
103 lines
2.6 KiB
C
/*
|
|
* Copyright (c) 2016 Intel Corporation
|
|
*
|
|
* Licensed 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 __SENSOR_MCP9808_H__
|
|
#define __SENSOR_MCP9808_H__
|
|
|
|
#include <errno.h>
|
|
|
|
#include <stdint.h>
|
|
#include <device.h>
|
|
#include <sensor.h>
|
|
#include <misc/util.h>
|
|
#include <gpio.h>
|
|
|
|
#define MCP9808_REG_CONFIG 0x01
|
|
#define MCP9808_REG_UPPER_LIMIT 0x02
|
|
#define MCP9808_REG_LOWER_LIMIT 0x03
|
|
#define MCP9808_REG_CRITICAL 0x04
|
|
#define MCP9808_REG_TEMP_AMB 0x05
|
|
|
|
#define MCP9808_ALERT_INT BIT(0)
|
|
#define MCP9808_ALERT_CNT BIT(3)
|
|
#define MCP9808_INT_CLEAR BIT(5)
|
|
|
|
#define MCP9808_SIGN_BIT BIT(12)
|
|
#define MCP9808_TEMP_INT_MASK 0x0ff0
|
|
#define MCP9808_TEMP_INT_SHIFT 4
|
|
#define MCP9808_TEMP_FRAC_MASK 0x000f
|
|
|
|
#define MCP9808_TEMP_MAX 0xffc
|
|
|
|
struct mcp9808_data {
|
|
struct device *i2c_master;
|
|
uint16_t i2c_slave_addr;
|
|
|
|
uint16_t reg_val;
|
|
|
|
struct gpio_callback gpio_cb;
|
|
|
|
#ifdef CONFIG_MCP9808_TRIGGER_OWN_THREAD
|
|
struct k_sem sem;
|
|
#endif
|
|
|
|
#ifdef CONFIG_MCP9808_TRIGGER_GLOBAL_THREAD
|
|
struct k_work work;
|
|
struct device *dev;
|
|
#endif
|
|
|
|
#ifdef CONFIG_MCP9808_TRIGGER
|
|
struct sensor_trigger trig;
|
|
sensor_trigger_handler_t trigger_handler;
|
|
#endif
|
|
};
|
|
|
|
int mcp9808_reg_read(struct mcp9808_data *data, uint8_t reg, uint16_t *val);
|
|
|
|
#ifdef CONFIG_MCP9808_TRIGGER
|
|
int mcp9808_attr_set(struct device *dev, enum sensor_channel chan,
|
|
enum sensor_attribute attr,
|
|
const struct sensor_value *val);
|
|
int mcp9808_trigger_set(struct device *dev,
|
|
const struct sensor_trigger *trig,
|
|
sensor_trigger_handler_t handler);
|
|
void mcp9808_setup_interrupt(struct device *dev);
|
|
#else
|
|
static inline int mcp9808_attr_set(struct device *dev,
|
|
enum sensor_channel chan,
|
|
enum sensor_attribute attr,
|
|
const struct sensor_value *val)
|
|
{
|
|
return -ENOTSUP;
|
|
}
|
|
|
|
static inline int mcp9808_trigger_set(struct device *dev,
|
|
const struct sensor_trigger *trig,
|
|
sensor_trigger_handler_t handler)
|
|
{
|
|
return -ENOTSUP;
|
|
}
|
|
|
|
static void mcp9808_setup_interrupt(struct device *dev)
|
|
{
|
|
}
|
|
#endif /* CONFIG_MCP9808_TRIGGER */
|
|
|
|
#define SYS_LOG_DOMAIN "MCP9808"
|
|
#define SYS_LOG_LEVEL CONFIG_SYS_LOG_SENSOR_LEVEL
|
|
#include <misc/sys_log.h>
|
|
#endif /* __SENSOR_MCP9808_H__ */
|