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