src/main/target/ALIENFLIGHTF4/hardware_revision.c

   1 /*
   2  * This file is part of Cleanflight.
   3  *
   4  * Cleanflight is free software: you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation, either version 3 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * Cleanflight is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with Cleanflight.  If not, see <http://www.gnu.org/licenses/>.
  16  */
  17
  18 #include <stdbool.h>
  19 #include <stdint.h>
  20 #include <stdlib.h>
  21
  22 #include "platform.h"
  23
  24 #include "build/build_config.h"
  25
  26 #include "drivers/time.h"
  27 #include "drivers/system.h"
  28 #include "drivers/io.h"
  29 #include "hardware_revision.h"
  30
  31 uint8_t hardwareRevision = AFF4_UNKNOWN;
  32
  33 static IO_t HWDetectPin = IO_NONE;
  34
  35 void detectHardwareRevision(void)
  36 {
  37     HWDetectPin = IOGetByTag(IO_TAG(HW_PIN));
  38     IOInit(HWDetectPin, OWNER_SYSTEM, RESOURCE_INPUT, 0);
  39     IOConfigGPIO(HWDetectPin, IOCFG_IPU);
  40
  41     delayMicroseconds(40);  // allow configuration to settle
  42
  43     // Check hardware revision
  44     if (IORead(HWDetectPin)) {
  45         hardwareRevision = AFF4_REV_1;
  46     } else {
  47         hardwareRevision = AFF4_REV_2;
  48     }
  49 }
  50
  51 void updateHardwareRevision(void)
  52 {
  53 }