src/main/target/BLUEJAYF4/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/bus_spi.h"
  30 #include "drivers/flash.h"
  31 #include "drivers/io.h"
  32 #include "drivers/time.h"
  33
  34 #include "pg/flash.h"
  35
  36 #include "hardware_revision.h"
  37
  38 uint8_t hardwareRevision = UNKNOWN;
  39
  40 void detectHardwareRevision(void)
  41 {
  42     IO_t pin1 = IOGetByTag(IO_TAG(PB12));
  43     IOInit(pin1, OWNER_SYSTEM, 1);
  44     IOConfigGPIO(pin1, IOCFG_IPU);
  45
  46     // Check hardware revision
  47     delayMicroseconds(10);  // allow configuration to settle
  48
  49     /*
  50         if both PB12 and 13 are tied to GND then it is Rev3A (mini)
  51         if only PB12 is tied to GND then it is a Rev3 (full size)
  52     */
  53     if (!IORead(pin1)) {
  54         hardwareRevision = BJF4_REV3;
  55
  56         IO_t pin2 = IOGetByTag(IO_TAG(PB13));
  57         IOInit(pin2, OWNER_SYSTEM, 2);
  58         IOConfigGPIO(pin2, IOCFG_IPU);
  59
  60         if (!IORead(pin2)) {
  61             hardwareRevision = BJF4_REV4;
  62         }
  63     } else {
  64         IO_t pin2 = IOGetByTag(IO_TAG(PB13));
  65         IOInit(pin2, OWNER_SYSTEM, 2);
  66         IOConfigGPIO(pin2, IOCFG_OUT_PP);
  67
  68         IOWrite(pin2, false);
  69
  70         if (!IORead(pin1)) {
  71             hardwareRevision = BJF4_MINI_REV3A;
  72         }
  73     }
  74
  75     if (hardwareRevision == UNKNOWN) {
  76         hardwareRevision = BJF4_REV2;
  77         return;
  78     }
  79 }
  80
  81 void updateHardwareRevision(void)
  82 {
  83     if (hardwareRevision != BJF4_REV2) {
  84         return;
  85     }
  86
  87     /*
  88         if flash exists on PB3 then Rev1
  89     */
  90     flashConfig_t flashConfig = { .csTag = IO_TAG(PB3) };
  91     if (flashInit(&flashConfig)) {
  92         hardwareRevision = BJF4_REV1;
  93     } else {
  94         IOInit(IOGetByTag(IO_TAG(PB3)), OWNER_FREE, 0);
  95     }
  96 }