9fe959857a
TI tmp1075 driver implemented based on tmp108 driver. The driver initializes the sensor based on the DTS. Added tmp1075 example overlay file to thermometer sample. All you need to do to use the sensor is to connect the I2C and optionally interrupt line. To see default DTS configuration option inspect `ti,tmp1075.yaml` bindings file and sensor spec. Signed-off-by: Paweł Czaplewski <pawel.czaplewski@arrow.com>
76 lines
2.6 KiB
C
76 lines
2.6 KiB
C
/*
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* Copyright (c) 2024 Arrow Electronics.
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#ifndef ZEPHYR_DRIVERS_SENSOR_TMP1075_TMP1075_H_
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#define ZEPHYR_DRIVERS_SENSOR_TMP1075_TMP1075_H_
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#include <zephyr/device.h>
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#include <zephyr/sys/util.h>
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#include <zephyr/drivers/gpio.h>
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#include <zephyr/drivers/i2c.h>
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/* Extended resolution is not supported on TMP1075 */
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#define TMP1075_DATA_NORMAL_SHIFT 4
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#define uCELSIUS_IN_CELSIUS 1000000
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#define TMP1075_REG_TEMPERATURE 0x00
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#define TMP1075_REG_CONFIG 0x01
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#define TMP1075_REG_TLOW 0x02
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#define TMP1075_REG_THIGH 0x03
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/* Scale in micro degrees Celsius -> 0.0625°C per ADC bit resolution */
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#define TMP1075_TEMP_SCALE 62500
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/* Macro to set or clear the TMP1075_OS (One-shot conversion mode) bit based on a boolean value */
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#define TMP1075_SET_ONE_SHOT_CONVERSION(reg, enable) \
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((reg) = ((reg) & ~(1 << 15)) | ((enable) << 15))
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/* Macro to set the TMP1075_R (Conversion rate) bits */
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#define TMP1075_SET_CONVERSION_RATE(reg, rate) ((reg) |= ((rate) << 13))
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/* Macro to set the TMP1075_F (Consecutive fault measurements) bits */
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#define TMP1075_SET_CONSECUTIVE_FAULT_MEASUREMENTS(reg, faults) ((reg) |= ((faults) << 11))
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/* Macro to set or clear the TMP1075_POL (Polarity of output pin) bit based on a boolean value */
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#define TMP1075_SET_ALERT_PIN_POLARITY(reg, activeHigh) \
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((reg) = ((reg) & ~(1 << 10)) | ((activeHigh) << 10))
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/* Macro to set or clear the TMP1075_TM (ALERT pin function) bit based on a boolean value */
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#define TMP1075_SET_ALERT_PIN_FUNCTION(reg, interruptMode) \
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((reg) = ((reg) & ~(1 << 9)) | ((interruptMode) << 9))
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/* Macro to set or clear the TMP1075_SD (Shutdown mode) bit based on a boolean value */
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#define TMP1075_SET_SHUTDOWN_MODE(reg, shutdown) ((reg) = ((reg) & ~(1 << 8)) | ((shutdown) << 8))
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struct tmp1075_data {
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const struct device *tmp1075_dev;
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int16_t sample;
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uint16_t config_reg;
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const struct sensor_trigger *temp_alert_trigger;
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sensor_trigger_handler_t temp_alert_handler;
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struct gpio_callback temp_alert_gpio_cb;
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bool over_threshold;
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};
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struct tmp1075_config {
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const struct i2c_dt_spec bus;
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const struct gpio_dt_spec alert_gpio;
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uint8_t cr;
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uint8_t cf;
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bool alert_pol: 1;
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bool one_shot: 1;
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bool interrupt_mode: 1;
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bool shutdown_mode: 1;
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};
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int tmp1075_trigger_set(const struct device *dev, const struct sensor_trigger *trig,
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sensor_trigger_handler_t handler);
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void tmp1075_trigger_handle_alert(const struct device *port, struct gpio_callback *cb,
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gpio_port_pins_t pins);
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#endif
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