e8d0090808
Fix bug that caused negative temperature values to be computed incorrectly. The sign bit needs to be perserved, when extracting the data sample from the TMP007_REG_TOBJ register. Jira: ZEP-499 Change-Id: Idbebd48b3164d7d4883352ef7128ef73be70e1b2 Signed-off-by: Bogdan Davidoaia <bogdan.m.davidoaia@intel.com>
111 lines
3.1 KiB
C
111 lines
3.1 KiB
C
/*
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* Copyright (c) 2016 Intel Corporation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef _SENSOR_TMP007
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#define _SENSOR_TMP007
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#include <device.h>
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#include <gpio.h>
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#include <misc/util.h>
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#if CONFIG_TMP007_I2C_ADDR_0
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#define TMP007_I2C_ADDRESS 0x40
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#elif CONFIG_TMP007_I2C_ADDR_1
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#define TMP007_I2C_ADDRESS 0x41
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#elif CONFIG_TMP007_I2C_ADDR_2
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#define TMP007_I2C_ADDRESS 0x42
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#elif CONFIG_TMP007_I2C_ADDR_3
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#define TMP007_I2C_ADDRESS 0x43
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#elif CONFIG_TMP007_I2C_ADDR_4
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#define TMP007_I2C_ADDRESS 0x44
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#elif CONFIG_TMP007_I2C_ADDR_5
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#define TMP007_I2C_ADDRESS 0x45
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#elif CONFIG_TMP007_I2C_ADDR_6
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#define TMP007_I2C_ADDRESS 0x46
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#elif CONFIG_TMP007_I2C_ADDR_7
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#define TMP007_I2C_ADDRESS 0x47
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#endif
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#define TMP007_REG_CONFIG 0x02
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#define TMP007_ALERT_EN_BIT BIT(8)
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#define TMP007_REG_TOBJ 0x03
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#define TMP007_DATA_INVALID_BIT BIT(0)
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#define TMP007_REG_STATUS 0x04
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#define TMP007_DATA_READY_INT_BIT BIT(14)
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#define TMP007_TOBJ_TH_HIGH_INT_BIT BIT(13)
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#define TMP007_TOBJ_TH_LOW_INT_BIT BIT(12)
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#define TMP007_TOBJ_TH_INT_BITS \
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(TMP007_TOBJ_TH_HIGH_INT_BIT | TMP007_TOBJ_TH_LOW_INT_BIT)
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#define TMP007_REG_TOBJ_TH_HIGH 0x06
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#define TMP007_REG_TOBJ_TH_LOW 0x07
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/* scale in micro degrees Celsius */
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#define TMP007_TEMP_SCALE 31250
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#define TMP007_TEMP_TH_SCALE 500000
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struct tmp007_data {
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struct device *i2c;
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int16_t sample;
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#ifdef CONFIG_TMP007_TRIGGER
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struct device *gpio;
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struct gpio_callback gpio_cb;
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sensor_trigger_handler_t drdy_handler;
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struct sensor_trigger drdy_trigger;
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sensor_trigger_handler_t th_handler;
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struct sensor_trigger th_trigger;
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#if defined(CONFIG_TMP007_TRIGGER_OWN_FIBER)
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char __stack fiber_stack[CONFIG_TMP007_FIBER_STACK_SIZE];
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struct nano_sem gpio_sem;
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#elif defined(CONFIG_TMP007_TRIGGER_GLOBAL_FIBER)
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struct nano_work work;
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struct device *dev;
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#endif
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#endif /* CONFIG_TMP007_TRIGGER */
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};
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#ifdef CONFIG_TMP007_TRIGGER
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int tmp007_reg_read(struct tmp007_data *drv_data, uint8_t reg, uint16_t *val);
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int tmp007_reg_write(struct tmp007_data *drv_data, uint8_t reg, uint16_t val);
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int tmp007_reg_update(struct tmp007_data *drv_data, uint8_t reg,
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uint16_t mask, uint16_t val);
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int tmp007_attr_set(struct device *dev,
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enum sensor_channel chan,
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enum sensor_attribute attr,
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const struct sensor_value *val);
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int tmp007_trigger_set(struct device *dev,
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const struct sensor_trigger *trig,
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sensor_trigger_handler_t handler);
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int tmp007_init_interrupt(struct device *dev);
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#endif
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#define SYS_LOG_DOMAIN "TMP007"
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#define SYS_LOG_LEVEL CONFIG_TMP007_SYS_LOG_LEVEL
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#include <misc/sys_log.h>
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#endif /* _SENSOR_TMP007_ */
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