src/main/drivers/exti.h

   1 /*
   2  * This file is part of Cleanflight and Betaflight.
   3  *
   4  * Cleanflight and Betaflight are free software. You can redistribute
   5  * this software and/or modify this software under the terms of the
   6  * GNU General Public License as published by the Free Software
   7  * Foundation, either version 3 of the License, or (at your option)
   8  * any later version.
   9  *
  10  * Cleanflight and Betaflight are distributed in the hope that they
  11  * will be useful, but WITHOUT ANY WARRANTY; without even the implied
  12  * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  13  * See the GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this software.
  17  *
  18  * If not, see <http://www.gnu.org/licenses/>.
  19  */
  20
  21 #pragma once
  22
  23 #include <stdbool.h>
  24
  25 #include "drivers/io_types.h"
  26
  27 typedef enum {
  28     BETAFLIGHT_EXTI_TRIGGER_RISING = 0,
  29     BETAFLIGHT_EXTI_TRIGGER_FALLING = 1,
  30     BETAFLIGHT_EXTI_TRIGGER_BOTH = 2
  31 } extiTrigger_t;
  32
  33 typedef struct extiCallbackRec_s extiCallbackRec_t;
  34 typedef void extiHandlerCallback(extiCallbackRec_t *self);
  35
  36 struct extiCallbackRec_s {
  37     extiHandlerCallback *fn;
  38 };
  39
  40 void EXTIInit(void);
  41
  42 void EXTIHandlerInit(extiCallbackRec_t *cb, extiHandlerCallback *fn);
  43 void EXTIConfig(IO_t io, extiCallbackRec_t *cb, int irqPriority, ioConfig_t config, extiTrigger_t trigger);
  44 void EXTIRelease(IO_t io);
  45 void EXTIEnable(IO_t io, bool enable);