src/main/target/BLUEJAYF4/initialisation.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
  24 #include "platform.h"
  25
  26 #include "config/feature.h"
  27
  28 #include "drivers/bus_i2c.h"
  29 #include "drivers/bus_spi.h"
  30 #include "drivers/io.h"
  31
  32 #include "config/config.h"
  33
  34 #include "io/serial.h"
  35
  36 #include "telemetry/telemetry.h"
  37
  38 #include "hardware_revision.h"
  39
  40 #define UART1_INVERTER          PC9
  41
  42 void targetPreInit(void)
  43 {
  44     switch (hardwareRevision) {
  45     case BJF4_REV3:
  46     case BJF4_MINI_REV3A:
  47     case BJF4_REV4:
  48         break;
  49     default:
  50         return;
  51     }
  52
  53     IO_t inverter = IOGetByTag(IO_TAG(UART1_INVERTER));
  54     IOInit(inverter, OWNER_INVERTER, 1);
  55     IOConfigGPIO(inverter, IOCFG_OUT_PP);
  56
  57     bool high = false;
  58     serialPortConfig_t *portConfig = serialFindPortConfigurationMutable(SERIAL_PORT_USART1);
  59     if (portConfig) {
  60         bool smartportEnabled = (portConfig->functionMask & FUNCTION_TELEMETRY_SMARTPORT);
  61         if (smartportEnabled && (!telemetryConfig()->telemetry_inverted) && (featureIsEnabled(FEATURE_TELEMETRY))) {
  62             high = true;
  63         }
  64     }
  65     /* reverse this for rev4, as it does not use the XOR gate */
  66     if (hardwareRevision == BJF4_REV4) {
  67         high = !high;
  68     }
  69     IOWrite(inverter, high);
  70
  71     /* ensure the CS pin for the flash is pulled hi so any SD card initialisation does not impact the chip */
  72     if (hardwareRevision == BJF4_REV3) {
  73         IO_t flashIo = IOGetByTag(IO_TAG(FLASH_CS_PIN));
  74         IOConfigGPIO(flashIo, IOCFG_OUT_PP);
  75         IOHi(flashIo);
  76
  77         IO_t sdcardIo = IOGetByTag(IO_TAG(SDCARD_SPI_CS_PIN));
  78         IOConfigGPIO(sdcardIo, IOCFG_OUT_PP);
  79         IOHi(sdcardIo);
  80     }
  81 }