src/main/target/BLUEJAYF4/initialisation.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
  21 #include "platform.h"
  22 #include "drivers/bus_i2c.h"
  23 #include "drivers/bus_spi.h"
  24 #include "hardware_revision.h"
  25 #include "config/config_master.h"
  26 #include "drivers/io.h"
  27 #include "config/feature.h"
  28
  29 void targetPreInit(void)
  30 {
  31     switch (hardwareRevision) {
  32     case BJF4_REV3:
  33     case BJF4_MINI_REV3A:
  34     case BJF4_REV4:
  35         break;
  36     default:
  37         return;
  38     }
  39
  40     IO_t inverter = IOGetByTag(IO_TAG(UART1_INVERTER));
  41     IOInit(inverter, OWNER_INVERTER, 1);
  42     IOConfigGPIO(inverter, IOCFG_OUT_PP);
  43
  44     bool high = false;
  45     serialPortConfig_t *portConfig = serialFindPortConfiguration(SERIAL_PORT_USART1);
  46     if (portConfig) {
  47         bool smartportEnabled = (portConfig->functionMask & FUNCTION_TELEMETRY_SMARTPORT);
  48         if (smartportEnabled && (telemetryConfig()->telemetry_inversion) && (feature(FEATURE_TELEMETRY))) {
  49             high = true;
  50         }
  51     }
  52     /* reverse this for rev4, as it does not use the XOR gate */
  53     if (hardwareRevision == BJF4_REV4) {
  54         high = !high;
  55     }
  56     IOWrite(inverter, high);
  57
  58     /* ensure the CS pin for the flash is pulled hi so any SD card initialisation does not impact the chip */
  59     if (hardwareRevision == BJF4_REV3) {
  60         IO_t io = IOGetByTag(IO_TAG(M25P16_CS_PIN));
  61         IOConfigGPIO(io, IOCFG_OUT_PP);
  62         IOHi(io);
  63     }
  64 }
  65