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 TMP1075_DATA_FRAC_SHIFT 4 18 #define TMP1075_DATA_FRAC_MASK 0x00F0 19 #define TMP1075_DATA_INTE_SHIFT 8 20 #define TMP1075_DATA_INTE_MASK 0xFF00 21 #define uCELSIUS_IN_CELSIUS 1000000 22 23 #define TMP1075_REG_TEMPERATURE 0x00 24 #define TMP1075_REG_CONFIG 0x01 25 #define TMP1075_REG_TLOW 0x02 26 #define TMP1075_REG_THIGH 0x03 27 28 /* Scale in micro degrees Celsius -> 0.0625°C per ADC bit resolution */ 29 #define TMP1075_TEMP_SCALE 62500 30 31 /* Macro to set or clear the TMP1075_OS (One-shot conversion mode) bit based on a boolean value */ 32 #define TMP1075_SET_ONE_SHOT_CONVERSION(reg, enable) \ 33 ((reg) = ((reg) & ~(1 << 15)) | ((enable) << 15)) 34 35 /* Macro to set the TMP1075_R (Conversion rate) bits */ 36 #define TMP1075_SET_CONVERSION_RATE(reg, rate) ((reg) |= ((rate) << 13)) 37 38 /* Macro to set the TMP1075_F (Consecutive fault measurements) bits */ 39 #define TMP1075_SET_CONSECUTIVE_FAULT_MEASUREMENTS(reg, faults) ((reg) |= ((faults) << 11)) 40 41 /* Macro to set or clear the TMP1075_POL (Polarity of output pin) bit based on a boolean value */ 42 #define TMP1075_SET_ALERT_PIN_POLARITY(reg, activeHigh) \ 43 ((reg) = ((reg) & ~(1 << 10)) | ((activeHigh) << 10)) 44 45 /* Macro to set or clear the TMP1075_TM (ALERT pin function) bit based on a boolean value */ 46 #define TMP1075_SET_ALERT_PIN_FUNCTION(reg, interruptMode) \ 47 ((reg) = ((reg) & ~(1 << 9)) | ((interruptMode) << 9)) 48 49 /* Macro to set or clear the TMP1075_SD (Shutdown mode) bit based on a boolean value */ 50 #define TMP1075_SET_SHUTDOWN_MODE(reg, shutdown) ((reg) = ((reg) & ~(1 << 8)) | ((shutdown) << 8)) 51 52 struct tmp1075_data { 53 const struct device *tmp1075_dev; 54 int16_t sample; 55 uint16_t config_reg; 56 const struct sensor_trigger *temp_alert_trigger; 57 sensor_trigger_handler_t temp_alert_handler; 58 struct gpio_callback temp_alert_gpio_cb; 59 bool over_threshold; 60 }; 61 62 struct tmp1075_config { 63 const struct i2c_dt_spec bus; 64 const struct gpio_dt_spec alert_gpio; 65 uint8_t cr; 66 uint8_t cf; 67 bool alert_pol: 1; 68 bool one_shot: 1; 69 bool interrupt_mode: 1; 70 bool shutdown_mode: 1; 71 }; 72 73 int tmp1075_trigger_set(const struct device *dev, const struct sensor_trigger *trig, 74 sensor_trigger_handler_t handler); 75 76 void tmp1075_trigger_handle_alert(const struct device *port, struct gpio_callback *cb, 77 gpio_port_pins_t pins); 78 79 #endif 80