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106 lines
3.5 KiB
C
106 lines
3.5 KiB
C
/*
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* Copyright (C) 2017 BlueKitchen GmbH
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the copyright holders nor the names of
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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* 4. Any redistribution, use, or modification is done solely for
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* personal benefit and not for any commercial purpose or for
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* monetary gain.
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*
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* THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL MATTHIAS
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* RINGWALD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
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* THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* Please inquire about commercial licensing options at
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* contact@bluekitchen-gmbh.com
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*
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*/
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#define BTSTACK_FILE__ "btstack_stdin_embedded.c"
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/*
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* btstack_stdin_embedded.c
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*
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* Common code to provide console input using an IRQ-driven console UART in hal_stdin.h
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*
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*/
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#include "btstack_config.h"
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#include "btstack_stdin.h"
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#include "btstack_run_loop.h"
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#include "btstack_run_loop_embedded.h"
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#ifdef ENABLE_SEGGER_RTT
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#include "SEGGER_RTT.h"
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#else
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#include "hal_stdin.h"
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#endif
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static void (*stdin_handler)(char c);
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static btstack_data_source_t stdin_data_source;
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#ifndef ENABLE_SEGGER_RTT
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// callback from hal_stdin is from irq context
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volatile int stdin_character_received;
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volatile char stdin_character;
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static void btstack_stdin_handler(char c){
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stdin_character = c;
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stdin_character_received = 1;
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btstack_run_loop_poll_data_sources_from_irq();
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}
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static void btstack_stdin_process(struct btstack_data_source *ds, btstack_data_source_callback_type_t callback_type){
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if (!stdin_character_received) return;
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(*stdin_handler)(stdin_character);
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stdin_character_received = 0;
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}
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#else
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static void btstack_stdin_process(struct btstack_data_source *ds, btstack_data_source_callback_type_t callback_type){
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if (SEGGER_RTT_HasKey()){
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int stdin_character = SEGGER_RTT_GetKey();
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(*stdin_handler)((uint8_t)stdin_character);
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}
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}
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#endif
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void btstack_stdin_setup(void (*handler)(char c)){
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// set handler
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stdin_handler = handler;
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// set up polling data_source
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btstack_run_loop_set_data_source_handler(&stdin_data_source, &btstack_stdin_process);
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btstack_run_loop_enable_data_source_callbacks(&stdin_data_source, DATA_SOURCE_CALLBACK_POLL);
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btstack_run_loop_add_data_source(&stdin_data_source);
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#ifndef ENABLE_SEGGER_RTT
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// start receiving via hal_stdin.h
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hal_stdin_setup(&btstack_stdin_handler);
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#endif
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}
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