src/main/target/BLUEJAYF4/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/system.h"
  27 #include "drivers/bus_spi.h"
  28 #include "drivers/io.h"
  29 #include "drivers/flash_m25p16.h"
  30 #include "hardware_revision.h"
  31
  32 uint8_t hardwareRevision = UNKNOWN;
  33
  34 void detectHardwareRevision(void)
  35 {
  36     IO_t pin1 = IOGetByTag(IO_TAG(PB12));
  37     IOInit(pin1, OWNER_SYSTEM, 1);
  38     IOConfigGPIO(pin1, IOCFG_IPU);
  39
  40     // Check hardware revision
  41     delayMicroseconds(10);  // allow configuration to settle
  42
  43     /*
  44         if both PB12 and 13 are tied to GND then it is Rev3A (mini)
  45         if only PB12 is tied to GND then it is a Rev3 (full size)
  46     */
  47     if (!IORead(pin1)) {
  48         hardwareRevision = BJF4_REV3;
  49
  50         IO_t pin2 = IOGetByTag(IO_TAG(PB13));
  51         IOInit(pin2, OWNER_SYSTEM, 2);
  52         IOConfigGPIO(pin2, IOCFG_IPU);
  53
  54         if (!IORead(pin2)) {
  55             hardwareRevision = BJF4_REV4;
  56         }
  57     } else {
  58         IO_t pin2 = IOGetByTag(IO_TAG(PB13));
  59         IOInit(pin2, OWNER_SYSTEM, 2);
  60         IOConfigGPIO(pin2, IOCFG_OUT_PP);
  61
  62         IOWrite(pin2, false);
  63
  64         if (!IORead(pin1)) {
  65             hardwareRevision = BJF4_MINI_REV3A;
  66         }
  67     }
  68
  69     if (hardwareRevision == UNKNOWN) {
  70         hardwareRevision = BJF4_REV2;
  71         return;
  72     }
  73 }
  74
  75 void updateHardwareRevision(void)
  76 {
  77     if (hardwareRevision != BJF4_REV2) {
  78         return;
  79     }
  80
  81     /*
  82         if flash exists on PB3 then Rev1
  83     */
  84     flashConfig_t flashConfig = { .csTag = IO_TAG(PB3) };
  85     if (m25p16_init(&flashConfig)) {
  86         hardwareRevision = BJF4_REV1;
  87     } else {
  88         IOInit(IOGetByTag(IO_TAG(PB3)), OWNER_FREE, 0);
  89     }
  90 }