src/main/target/FF_RACEPIT/hardware_revision.c

   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 #include <stdbool.h>
  22 #include <stdint.h>
  23 #include <stdlib.h>
  24
  25 #include "platform.h"
  26
  27 #include "build/build_config.h"
  28
  29 #include "drivers/io.h"
  30 #include "drivers/time.h"
  31
  32 #include "hardware_revision.h"
  33
  34 #define HW_PIN PC5
  35
  36 uint8_t hardwareRevision = FF_RACEPIT_UNKNOWN;
  37
  38 static IO_t HWDetectPinA = IO_NONE;
  39
  40 void detectHardwareRevision(void)
  41 {
  42     HWDetectPinA = IOGetByTag(IO_TAG(HW_PIN));
  43     IOInit(HWDetectPinA, OWNER_SYSTEM, 0);
  44     IOConfigGPIO(HWDetectPinA, IOCFG_IPU);
  45
  46     delayMicroseconds(10);  // allow configuration to settle
  47
  48     if (!IORead(HWDetectPinA)) {
  49         hardwareRevision = FF_RACEPIT_REV_1;
  50     } else {
  51         hardwareRevision = FF_RACEPIT_REV_2;
  52     }
  53 }
  54
  55 void updateHardwareRevision(void)
  56 {
  57 }