forked from OSchip/arduino_core_ch32
52 lines
1.6 KiB
C
52 lines
1.6 KiB
C
/*
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Copyright (c) 2012 Arduino. All right reserved.
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <stdint.h>
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/**
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* Empty yield() hook.
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*
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* This function is intended to be used by library writers to build
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* libraries or sketches that supports cooperative threads.
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*
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* Its defined as a weak symbol and it can be redefined to implement a
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* real cooperative scheduler.
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*/
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static void __empty()
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{
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// Empty
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}
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void yield(void) __attribute__((weak, alias("__empty")));
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#ifdef DTR_TOGGLING_SEQ
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/**
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* Empty dtr_toggling() hook.
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*
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* This function is intended to be used by library writers to build
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* libraries or sketches that require DTR toggling feature.
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*
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* Its defined as a weak symbol and it can be redefined to implement
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* task to achieve in this case.
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*/
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static void __empty_dtr_toggling(uint8_t *buf, uint32_t *len)
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{
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(void)buf;
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(void)len;
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}
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void dtr_togglingHook(uint8_t *buf, uint32_t *len) __attribute__((weak, alias("__empty_dtr_toggling")));
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#endif |