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https://github.com/zephyrproject-rtos/zephyr
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50d1bb16e3
Update sample overlays. Add GPIO flags to configuration state. Refactor to split out setup/handle/process phases. Switch to new API replacing callback dis/enable with interrupt dis/enable. Signed-off-by: Peter Bigot <peter.bigot@nordicsemi.no>
104 lines
3.0 KiB
C
104 lines
3.0 KiB
C
/*
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* Copyright (c) 2018 Analog Devices Inc.
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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_ADT7420_ADT7420_H_
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#define ZEPHYR_DRIVERS_SENSOR_ADT7420_ADT7420_H_
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#include <zephyr/types.h>
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#include <device.h>
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#include <drivers/gpio.h>
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/* ADT7420 registers */
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#define ADT7420_REG_TEMP_MSB 0x00 /* Temperature value MSB */
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#define ADT7420_REG_TEMP_LSB 0x01 /* Temperature value LSB */
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#define ADT7420_REG_STATUS 0x02 /* Status */
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#define ADT7420_REG_CONFIG 0x03 /* Configuration */
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#define ADT7420_REG_T_HIGH_MSB 0x04 /* Temperature HIGH setpoint MSB */
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#define ADT7420_REG_T_HIGH_LSB 0x05 /* Temperature HIGH setpoint LSB */
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#define ADT7420_REG_T_LOW_MSB 0x06 /* Temperature LOW setpoint MSB */
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#define ADT7420_REG_T_LOW_LSB 0x07 /* Temperature LOW setpoint LSB */
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#define ADT7420_REG_T_CRIT_MSB 0x08 /* Temperature CRIT setpoint MSB */
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#define ADT7420_REG_T_CRIT_LSB 0x09 /* Temperature CRIT setpoint LSB */
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#define ADT7420_REG_HIST 0x0A /* Temperature HYST setpoint */
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#define ADT7420_REG_ID 0x0B /* ID */
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#define ADT7420_REG_RESET 0x2F /* Software reset */
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/* ADT7420_REG_STATUS definition */
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#define ADT7420_STATUS_T_LOW BIT(4)
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#define ADT7420_STATUS_T_HIGH BIT(5)
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#define ADT7420_STATUS_T_CRIT BIT(6)
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#define ADT7420_STATUS_RDY BIT(7)
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/* ADT7420_REG_CONFIG definition */
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#define ADT7420_CONFIG_FAULT_QUEUE(x) ((x) & 0x3)
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#define ADT7420_CONFIG_CT_POL BIT(2)
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#define ADT7420_CONFIG_INT_POL BIT(3)
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#define ADT7420_CONFIG_INT_CT_MODE BIT(4)
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#define ADT7420_CONFIG_OP_MODE(x) (((x) & 0x3) << 5)
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#define ADT7420_CONFIG_RESOLUTION BIT(7)
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/* ADT7420_CONFIG_FAULT_QUEUE(x) options */
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#define ADT7420_FAULT_QUEUE_1_FAULT 0
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#define ADT7420_FAULT_QUEUE_2_FAULTS 1
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#define ADT7420_FAULT_QUEUE_3_FAULTS 2
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#define ADT7420_FAULT_QUEUE_4_FAULTS 3
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/* ADT7420_CONFIG_OP_MODE(x) options */
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#define ADT7420_OP_MODE_CONT_CONV 0
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#define ADT7420_OP_MODE_ONE_SHOT 1
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#define ADT7420_OP_MODE_1_SPS 2
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#define ADT7420_OP_MODE_SHUTDOWN 3
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/* ADT7420 default ID */
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#define ADT7420_DEFAULT_ID 0xCB
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/* scale in micro degrees Celsius */
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#define ADT7420_TEMP_SCALE 15625
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struct adt7420_data {
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struct device *i2c;
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s16_t sample;
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#ifdef CONFIG_ADT7420_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 th_handler;
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struct sensor_trigger th_trigger;
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struct device *dev;
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#if defined(CONFIG_ADT7420_TRIGGER_OWN_THREAD)
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K_THREAD_STACK_MEMBER(thread_stack, CONFIG_ADT7420_THREAD_STACK_SIZE);
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struct k_sem gpio_sem;
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struct k_thread thread;
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#elif defined(CONFIG_ADT7420_TRIGGER_GLOBAL_THREAD)
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struct k_work work;
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#endif
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#endif /* CONFIG_ADT7420_TRIGGER */
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};
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struct adt7420_dev_config {
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const char *i2c_port;
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u16_t i2c_addr;
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#ifdef CONFIG_ADT7420_TRIGGER
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gpio_pin_t int_pin;
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gpio_flags_t int_flags;
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const char *int_name;
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#endif
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};
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#ifdef CONFIG_ADT7420_TRIGGER
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int adt7420_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 adt7420_init_interrupt(struct device *dev);
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#endif /* CONFIG_ADT7420_TRIGGER */
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#endif /* ZEPHYR_DRIVERS_SENSOR_ADT7420_ADT7420_H_ */
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