72 lines
2.5 KiB
C
72 lines
2.5 KiB
C
#pragma once
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#include <stdint.h>
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#ifndef DS2482_HAL_H
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#define DS2482_HAL_H
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#ifdef STM32F3
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#include "stm32f3xx_hal.h"
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#elifdef STM32F4
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#include "stm32f4xx_hal.h"
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#elifdef STM32H7
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#include "stm32h7xx_hal.h"
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#else
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#error "No target defined"
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#endif
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#define MULTIPLE_DEVICES false //set to true if multiple DS2482 devices are connected
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#if !MULTIPLE_DEVICES
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#define DS2482_I2C_ADDR 0x00 //set to I2C address of the DS2482 device (if in single device mode)
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#endif
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#define DS2482_TIMEOUT_1W 100 //timeout in ms for 1-wire operations
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#define DS2482_TIMEOUT_I2C 100 //timeout in ms for I2C operations
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#if !MULTIPLE_DEVICES
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static_assert(DS2482_I2C_ADDR != 0x00, "DS2482_I2C_ADDR must be set in single device mode!");
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#endif
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static_assert (DS2482_TIMEOUT_1W < UINT16_MAX, "DS2482_TIMEOUT_1W must be less than 65535");
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static_assert (DS2482_TIMEOUT_I2C < UINT32_MAX, "DS2482_TIMEOUT_I2C must be less than 4294967295");
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static_assert (DS2482_TIMEOUT_1W > 0, "DS2482_TIMEOUT_1W cannot be negative");
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static_assert (DS2482_TIMEOUT_I2C > 0, "DS2482_TIMEOUT_I2C cannot be negative");
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#define nag_attr [[nodiscard("Check status for errors!")]]
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#if MULTIPLE_DEVICES
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typedef struct {
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I2C_HandleTypeDef* hi2c;
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uint16_t address;
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} ds2482_t;
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static inline ds2482_t ds2482_create(I2C_HandleTypeDef* hi2c, uint16_t address) {
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return (ds2482_t){.hi2c = hi2c, .address = address};
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}
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#define DEV_ARG const ds2482_t * const ds2482,
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nag_attr HAL_StatusTypeDef ds2482_init(const ds2482_t * const ds2482);
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nag_attr HAL_StatusTypeDef ds2482_reset(const ds2482_t * const ds2482);
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#else
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nag_attr HAL_StatusTypeDef ds2482_init(I2C_HandleTypeDef* hi2c);
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nag_attr HAL_StatusTypeDef ds2482_reset();
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#define DEV_ARG
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#endif
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nag_attr HAL_StatusTypeDef ds2482_write_config(DEV_ARG uint8_t config);
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nag_attr HAL_StatusTypeDef ds2482_set_read_ptr(DEV_ARG uint8_t read_ptr);
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nag_attr HAL_StatusTypeDef ds2482_1w_reset(DEV_ARG bool* presence);
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nag_attr HAL_StatusTypeDef ds2482_1w_write_byte(DEV_ARG uint8_t byte);
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nag_attr HAL_StatusTypeDef ds2482_1w_read_byte(DEV_ARG uint8_t* byte);
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nag_attr HAL_StatusTypeDef ds2482_1w_read_bit(DEV_ARG bool* bit);
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nag_attr HAL_StatusTypeDef ds2482_1w_write_bit(DEV_ARG bool bit);
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nag_attr HAL_StatusTypeDef ds2482_1w_triplet(DEV_ARG uint8_t dir);
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nag_attr HAL_StatusTypeDef ds2482_1w_search(DEV_ARG uint16_t max_devices, uint64_t devices[static max_devices]);
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nag_attr HAL_StatusTypeDef ds2482_1w_verify_device(DEV_ARG uint64_t device, bool* present);
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#undef nag_attr
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#undef DEV_ARG
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#endif // DS2482_HAL_H
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