1 /* 2 * Copyright (c) 2024 Arrow Electronics. 3 * 4 * SPDX-License-Identifier: Apache-2.0 5 */ 6 7 #ifndef ZEPHYR_DRIVERS_SENSOR_TMP1075_TMP1075_H_ 8 #define ZEPHYR_DRIVERS_SENSOR_TMP1075_TMP1075_H_ 9 10 #include <zephyr/device.h> 11 #include <zephyr/sys/util.h> 12 #include <zephyr/drivers/gpio.h> 13 #include <zephyr/drivers/i2c.h> 14 15 /* Extended resolution is not supported on TMP1075 */ 16 #define TMP1075_DATA_NORMAL_SHIFT 4 17 #define uCELSIUS_IN_CELSIUS 1000000 18 19 #define TMP1075_REG_TEMPERATURE 0x00 20 #define TMP1075_REG_CONFIG 0x01 21 #define TMP1075_REG_TLOW 0x02 22 #define TMP1075_REG_THIGH 0x03 23 24 /* Scale in micro degrees Celsius -> 0.0625°C per ADC bit resolution */ 25 #define TMP1075_TEMP_SCALE 62500 26 27 /* Macro to set or clear the TMP1075_OS (One-shot conversion mode) bit based on a boolean value */ 28 #define TMP1075_SET_ONE_SHOT_CONVERSION(reg, enable) \ 29 ((reg) = ((reg) & ~(1 << 15)) | ((enable) << 15)) 30 31 /* Macro to set the TMP1075_R (Conversion rate) bits */ 32 #define TMP1075_SET_CONVERSION_RATE(reg, rate) ((reg) |= ((rate) << 13)) 33 34 /* Macro to set the TMP1075_F (Consecutive fault measurements) bits */ 35 #define TMP1075_SET_CONSECUTIVE_FAULT_MEASUREMENTS(reg, faults) ((reg) |= ((faults) << 11)) 36 37 /* Macro to set or clear the TMP1075_POL (Polarity of output pin) bit based on a boolean value */ 38 #define TMP1075_SET_ALERT_PIN_POLARITY(reg, activeHigh) \ 39 ((reg) = ((reg) & ~(1 << 10)) | ((activeHigh) << 10)) 40 41 /* Macro to set or clear the TMP1075_TM (ALERT pin function) bit based on a boolean value */ 42 #define TMP1075_SET_ALERT_PIN_FUNCTION(reg, interruptMode) \ 43 ((reg) = ((reg) & ~(1 << 9)) | ((interruptMode) << 9)) 44 45 /* Macro to set or clear the TMP1075_SD (Shutdown mode) bit based on a boolean value */ 46 #define TMP1075_SET_SHUTDOWN_MODE(reg, shutdown) ((reg) = ((reg) & ~(1 << 8)) | ((shutdown) << 8)) 47 48 struct tmp1075_data { 49 const struct device *tmp1075_dev; 50 int16_t sample; 51 uint16_t config_reg; 52 const struct sensor_trigger *temp_alert_trigger; 53 sensor_trigger_handler_t temp_alert_handler; 54 struct gpio_callback temp_alert_gpio_cb; 55 bool over_threshold; 56 }; 57 58 struct tmp1075_config { 59 const struct i2c_dt_spec bus; 60 const struct gpio_dt_spec alert_gpio; 61 uint8_t cr; 62 uint8_t cf; 63 bool alert_pol: 1; 64 bool one_shot: 1; 65 bool interrupt_mode: 1; 66 bool shutdown_mode: 1; 67 }; 68 69 int tmp1075_trigger_set(const struct device *dev, const struct sensor_trigger *trig, 70 sensor_trigger_handler_t handler); 71 72 void tmp1075_trigger_handle_alert(const struct device *port, struct gpio_callback *cb, 73 gpio_port_pins_t pins); 74 75 #endif 76
