src/main/drivers/camera_control_impl.h

   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 #pragma once
  22
  23 #include "io_types.h"
  24 #include "pg/pg.h"
  25 #include "drivers/pwm_output.h"
  26
  27 #define CAMERA_CONTROL_PWM_RESOLUTION      128
  28 #define CAMERA_CONTROL_SOFT_PWM_RESOLUTION 448
  29
  30 typedef enum {
  31     CAMERA_CONTROL_KEY_ENTER,
  32     CAMERA_CONTROL_KEY_LEFT,
  33     CAMERA_CONTROL_KEY_UP,
  34     CAMERA_CONTROL_KEY_RIGHT,
  35     CAMERA_CONTROL_KEY_DOWN,
  36     CAMERA_CONTROL_KEYS_COUNT
  37 } cameraControlKey_e;
  38
  39 typedef enum {
  40     CAMERA_CONTROL_MODE_HARDWARE_PWM,
  41     CAMERA_CONTROL_MODE_SOFTWARE_PWM,
  42     CAMERA_CONTROL_MODE_DAC,
  43     CAMERA_CONTROL_MODES_COUNT
  44 } cameraControlMode_e;
  45
  46 typedef struct cameraControlConfig_s {
  47     cameraControlMode_e mode;
  48     // measured in 10 mV steps
  49     uint16_t refVoltage;
  50     uint16_t keyDelayMs;
  51     // measured 100 Ohm steps
  52     uint16_t internalResistance;
  53
  54     ioTag_t ioTag;
  55     uint8_t inverted;
  56     uint16_t buttonResistanceValues[CAMERA_CONTROL_KEYS_COUNT]; // resistance in 100ohm steps
  57 } cameraControlConfig_t;
  58
  59 PG_DECLARE(cameraControlConfig_t, cameraControlConfig);
  60
  61 void cameraControlInit(void);
  62
  63 void cameraControlProcess(uint32_t currentTimeUs);
  64 void cameraControlKeyPress(cameraControlKey_e key, uint32_t holdDurationMs);
  65
  66 void cameraControlHi(void);
  67 void cameraControlLo(void);
  68
  69 void cameraControlSoftwarePwmInit(void);
  70 void cameraControlSoftwarePwmEnable(uint32_t hiTime, uint32_t period);
  71 void cameraControlSoftwarePwmDisable(void);
  72 void cameraControlHardwarePwmInit(timerChannel_t *channel, const timerHardware_t *timerHardware, uint8_t inverted);