1 /* 2 * Copyright (c) 2022, Thomas Stranger 3 * 4 * SPDX-License-Identifier: Apache-2.0 5 */ 6 7 /** 8 * @file 9 * @brief Extended public API for 1-Wire Sensors 10 * 11 * This header file exposes an attribute an helper function to allow the 12 * runtime configuration of ROM IDs for 1-Wire Sensors. 13 */ 14 15 #ifndef ZEPHYR_INCLUDE_DRIVERS_SENSOR_W1_SENSOR_H_ 16 #define ZEPHYR_INCLUDE_DRIVERS_SENSOR_W1_SENSOR_H_ 17 18 #ifdef __cplusplus 19 extern "C" { 20 #endif 21 22 #include <zephyr/drivers/sensor.h> 23 #include <zephyr/drivers/w1.h> 24 25 /** 26 * @brief 1-Wire Sensor API 27 * @defgroup w1_sensor 1-Wire Sensor API 28 * @ingroup w1_interface 29 * @{ 30 */ 31 32 enum sensor_attribute_w1 { 33 /** Device unique 1-Wire ROM */ 34 SENSOR_ATTR_W1_ROM = SENSOR_ATTR_PRIV_START, 35 }; 36 37 /** 38 * @brief Function to write a w1_rom struct to an sensor value ptr. 39 * 40 * @param rom Pointer to the rom struct. 41 * @param val Pointer to the sensor value. 42 */ w1_rom_to_sensor_value(const struct w1_rom * rom,struct sensor_value * val)43static inline void w1_rom_to_sensor_value(const struct w1_rom *rom, 44 struct sensor_value *val) 45 { 46 val->val1 = sys_get_be64((uint8_t *)rom) & BIT64_MASK(32); 47 val->val2 = sys_get_be64((uint8_t *)rom) >> 32; 48 } 49 50 /** 51 * @brief Function to write an rom id stored in a sensor value to a struct w1_rom ptr. 52 * 53 * @param val Sensor_value representing the rom. 54 * @param rom The rom struct ptr. 55 */ w1_sensor_value_to_rom(const struct sensor_value * val,struct w1_rom * rom)56static inline void w1_sensor_value_to_rom(const struct sensor_value *val, 57 struct w1_rom *rom) 58 { 59 uint64_t temp64 = ((uint64_t)((uint32_t)val->val2) << 32) 60 | (uint32_t)val->val1; 61 sys_put_be64(temp64, (uint8_t *)rom); 62 } 63 64 /** 65 * @} 66 */ 67 68 #ifdef __cplusplus 69 } 70 #endif 71 72 #endif /* ZEPHYR_INCLUDE_DRIVERS_SENSOR_W1_SENSOR_H_ */ 73
