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79 lines
2.4 KiB
C
79 lines
2.4 KiB
C
/**
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* @file expansion_worker.h
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* @brief Expansion module handling thread wrapper.
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*
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* The worker is started each time an expansion module is detected
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* and handles all of the communication protocols. Likewise, it is stopped
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* upon module disconnection or communication error.
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*
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* @warning This file is a private implementation detail. Please do not attempt to use it in applications.
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*/
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#pragma once
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#include <furi_hal_serial_types.h>
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/**
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* @brief Expansion worker opaque type declaration.
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*/
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typedef struct ExpansionWorker ExpansionWorker;
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/**
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* @brief Worker callback type.
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*
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* @see expansion_worker_set_callback()
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*
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* @param[in,out] context pointer to a user-defined object.
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*/
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typedef void (*ExpansionWorkerCallback)(void* context);
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/**
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* @brief Create an expansion worker instance.
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*
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* @param[in] serial_id numerical identifier of the serial to be used by the worker.
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* @returns pointer to the created instance.
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*/
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ExpansionWorker* expansion_worker_alloc(FuriHalSerialId serial_id);
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/**
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* @brief Delete an expansion worker instance.
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*
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* @param[in,out] instance pointer to the instance to be deleted.
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*/
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void expansion_worker_free(ExpansionWorker* instance);
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/**
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* @brief Set the module disconnect callback.
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*
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* The callback will be triggered upon worker stop EXCEPT
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* when it was stopped via an expansion_worker_stop() call.
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*
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* In other words, the callback will ONLY be triggered if the worker was
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* stopped due to the user disconnecting/resetting/powering down the module,
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* or due to some communication error.
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*
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* @param[in,out] instance pointer to the worker instance to be modified.
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* @param[in] callback pointer to the callback function to be called under the above conditions.
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* @param[in] context pointer to a user-defined object, will be passed as a parameter to the callback.
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*/
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void expansion_worker_set_callback(
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ExpansionWorker* instance,
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ExpansionWorkerCallback callback,
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void* context);
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/**
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* @brief Start the expansion module worker.
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*
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* @param[in,out] instance pointer to the worker instance to be started.
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*/
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void expansion_worker_start(ExpansionWorker* instance);
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/**
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* @brief Stop the expansion module worker.
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*
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* If the worker was stopped via this call (and not because of module disconnect/
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* protocol error), the callback will not be triggered.
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*
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* @param[in,out] instance pointer to the worker instance to be stopped.
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*/
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void expansion_worker_stop(ExpansionWorker* instance);
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