src/main/target/ALIENFLIGHTF4/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 #include "hardware_revision.h"
  32
  33 uint8_t hardwareRevision = AFF4_UNKNOWN;
  34
  35 static IO_t HWDetectPin = IO_NONE;
  36
  37 void detectHardwareRevision(void)
  38 {
  39     HWDetectPin = IOGetByTag(IO_TAG(HW_PIN));
  40     IOInit(HWDetectPin, OWNER_SYSTEM, 0);
  41     IOConfigGPIO(HWDetectPin, IOCFG_IPU);
  42
  43     delayMicroseconds(40);  // allow configuration to settle
  44
  45     // Check hardware revision
  46     if (IORead(HWDetectPin)) {
  47         hardwareRevision = AFF4_REV_1;
  48     } else {
  49         hardwareRevision = AFF4_REV_2;
  50     }
  51 }
  52
  53 void updateHardwareRevision(void)
  54 {
  55 }