1 /* 2 * Copyright (c) 2018 Analog Devices Inc. 3 * 4 * SPDX-License-Identifier: Apache-2.0 5 */ 6 7 #ifndef ZEPHYR_DRIVERS_SENSOR_ADT7420_ADT7420_H_ 8 #define ZEPHYR_DRIVERS_SENSOR_ADT7420_ADT7420_H_ 9 10 #include <zephyr/types.h> 11 #include <zephyr/device.h> 12 #include <zephyr/drivers/gpio.h> 13 14 /* ADT7420 registers */ 15 #define ADT7420_REG_TEMP_MSB 0x00 /* Temperature value MSB */ 16 #define ADT7420_REG_TEMP_LSB 0x01 /* Temperature value LSB */ 17 #define ADT7420_REG_STATUS 0x02 /* Status */ 18 #define ADT7420_REG_CONFIG 0x03 /* Configuration */ 19 #define ADT7420_REG_T_HIGH_MSB 0x04 /* Temperature HIGH setpoint MSB */ 20 #define ADT7420_REG_T_HIGH_LSB 0x05 /* Temperature HIGH setpoint LSB */ 21 #define ADT7420_REG_T_LOW_MSB 0x06 /* Temperature LOW setpoint MSB */ 22 #define ADT7420_REG_T_LOW_LSB 0x07 /* Temperature LOW setpoint LSB */ 23 #define ADT7420_REG_T_CRIT_MSB 0x08 /* Temperature CRIT setpoint MSB */ 24 #define ADT7420_REG_T_CRIT_LSB 0x09 /* Temperature CRIT setpoint LSB */ 25 #define ADT7420_REG_HIST 0x0A /* Temperature HYST setpoint */ 26 #define ADT7420_REG_ID 0x0B /* ID */ 27 #define ADT7420_REG_RESET 0x2F /* Software reset */ 28 29 /* ADT7420_REG_STATUS definition */ 30 #define ADT7420_STATUS_T_LOW BIT(4) 31 #define ADT7420_STATUS_T_HIGH BIT(5) 32 #define ADT7420_STATUS_T_CRIT BIT(6) 33 #define ADT7420_STATUS_RDY BIT(7) 34 35 /* ADT7420_REG_CONFIG definition */ 36 #define ADT7420_CONFIG_FAULT_QUEUE(x) ((x) & 0x3) 37 #define ADT7420_CONFIG_CT_POL BIT(2) 38 #define ADT7420_CONFIG_INT_POL BIT(3) 39 #define ADT7420_CONFIG_INT_CT_MODE BIT(4) 40 #define ADT7420_CONFIG_OP_MODE(x) (((x) & 0x3) << 5) 41 #define ADT7420_CONFIG_RESOLUTION BIT(7) 42 43 /* ADT7420_CONFIG_FAULT_QUEUE(x) options */ 44 #define ADT7420_FAULT_QUEUE_1_FAULT 0 45 #define ADT7420_FAULT_QUEUE_2_FAULTS 1 46 #define ADT7420_FAULT_QUEUE_3_FAULTS 2 47 #define ADT7420_FAULT_QUEUE_4_FAULTS 3 48 49 /* ADT7420_CONFIG_OP_MODE(x) options */ 50 #define ADT7420_OP_MODE_CONT_CONV 0 51 #define ADT7420_OP_MODE_ONE_SHOT 1 52 #define ADT7420_OP_MODE_1_SPS 2 53 #define ADT7420_OP_MODE_SHUTDOWN 3 54 55 /* ADT7420 default ID */ 56 #define ADT7420_DEFAULT_ID 0xCB 57 58 /* scale in micro degrees Celsius */ 59 #define ADT7420_TEMP_SCALE 15625 60 61 struct adt7420_data { 62 int16_t sample; 63 #ifdef CONFIG_ADT7420_TRIGGER 64 struct gpio_callback gpio_cb; 65 66 sensor_trigger_handler_t th_handler; 67 const struct sensor_trigger *th_trigger; 68 69 const struct device *dev; 70 71 #if defined(CONFIG_ADT7420_TRIGGER_OWN_THREAD) 72 K_KERNEL_STACK_MEMBER(thread_stack, CONFIG_ADT7420_THREAD_STACK_SIZE); 73 struct k_sem gpio_sem; 74 struct k_thread thread; 75 #elif defined(CONFIG_ADT7420_TRIGGER_GLOBAL_THREAD) 76 struct k_work work; 77 #endif 78 #endif /* CONFIG_ADT7420_TRIGGER */ 79 80 }; 81 82 struct adt7420_dev_config { 83 struct i2c_dt_spec i2c; 84 #ifdef CONFIG_ADT7420_TRIGGER 85 struct gpio_dt_spec int_gpio; 86 #endif 87 }; 88 89 #ifdef CONFIG_ADT7420_TRIGGER 90 int adt7420_trigger_set(const struct device *dev, 91 const struct sensor_trigger *trig, 92 sensor_trigger_handler_t handler); 93 94 int adt7420_init_interrupt(const struct device *dev); 95 #endif /* CONFIG_ADT7420_TRIGGER */ 96 97 98 #endif /* ZEPHYR_DRIVERS_SENSOR_ADT7420_ADT7420_H_ */ 99
