123 lines
3.9 KiB
C
123 lines
3.9 KiB
C
#pragma once
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#include <stddef.h>
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#include <stdint.h>
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#include <stdbool.h>
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#include <furi.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define RPC_BUFFER_SIZE (1024)
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#define RECORD_RPC "rpc"
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/** Rpc interface. Used for opening session only. */
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typedef struct Rpc Rpc;
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/** Rpc session interface */
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typedef struct RpcSession RpcSession;
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/** Callback to send to client any data (e.g. response to command) */
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typedef void (*RpcSendBytesCallback)(void* context, uint8_t* bytes, size_t bytes_len);
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/** Callback to notify client that buffer is empty */
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typedef void (*RpcBufferIsEmptyCallback)(void* context);
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/** Callback to notify transport layer that close_session command
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* is received. Any other actions lays on transport layer.
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* No destruction or session close performed. */
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typedef void (*RpcSessionClosedCallback)(void* context);
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/** Callback to notify transport layer that session was closed
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* and all operations were finished */
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typedef void (*RpcSessionTerminatedCallback)(void* context);
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/** Open RPC session
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*
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* USAGE:
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* 1) rpc_session_open();
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* 2) rpc_session_set_context();
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* 3) rpc_session_set_send_bytes_callback();
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* 4) rpc_session_set_close_callback();
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* 5) while(1) {
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* rpc_session_feed();
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* }
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* 6) rpc_session_close();
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*
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*
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* @param rpc instance
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* @return pointer to RpcSession descriptor, or
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* NULL if RPC is busy and can't open session now
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*/
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RpcSession* rpc_session_open(Rpc* rpc);
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/** Close RPC session
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* It is guaranteed that no callbacks will be called
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* as soon as session is closed. So no need in setting
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* callbacks to NULL after session close.
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*
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* @param session pointer to RpcSession descriptor
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*/
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void rpc_session_close(RpcSession* session);
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/** Set session context for callbacks to pass
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*
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* @param session pointer to RpcSession descriptor
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* @param context context to pass to callbacks
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*/
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void rpc_session_set_context(RpcSession* session, void* context);
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/** Set callback to send bytes to client
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* WARN: It's forbidden to call RPC API within RpcSendBytesCallback
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*
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* @param session pointer to RpcSession descriptor
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* @param callback callback to send bytes to client (can be NULL)
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*/
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void rpc_session_set_send_bytes_callback(RpcSession* session, RpcSendBytesCallback callback);
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/** Set callback to notify that buffer is empty
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*
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* @param session pointer to RpcSession descriptor
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* @param callback callback to notify client that buffer is empty (can be NULL)
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*/
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void rpc_session_set_buffer_is_empty_callback(
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RpcSession* session,
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RpcBufferIsEmptyCallback callback);
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/** Set callback to be called when RPC command to close session is received
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* WARN: It's forbidden to call RPC API within RpcSessionClosedCallback
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*
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* @param session pointer to RpcSession descriptor
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* @param callback callback to inform about RPC close session command (can be NULL)
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*/
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void rpc_session_set_close_callback(RpcSession* session, RpcSessionClosedCallback callback);
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/** Set callback to be called when RPC session is closed
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*
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* @param session pointer to RpcSession descriptor
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* @param callback callback to inform about RPC session state
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*/
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void rpc_session_set_terminated_callback(
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RpcSession* session,
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RpcSessionTerminatedCallback callback);
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/** Give bytes to RPC service to decode them and perform command
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*
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* @param session pointer to RpcSession descriptor
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* @param buffer buffer to provide to RPC service
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* @param size size of buffer
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* @param timeout max timeout to wait till all buffer will be consumed
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*
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* @return actually consumed bytes
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*/
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size_t rpc_session_feed(RpcSession* session, uint8_t* buffer, size_t size, TickType_t timeout);
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/** Get available size of RPC buffer
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*
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* @param session pointer to RpcSession descriptor
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*
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* @return bytes available in buffer
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*/
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size_t rpc_session_get_available_size(RpcSession* session);
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#ifdef __cplusplus
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}
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#endif |