src/main/rx/pwm.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 <string.h>
  23
  24 #include "build_config.h"
  25
  26 #include "platform.h"
  27
  28 #include "drivers/gpio.h"
  29 #include "drivers/timer.h"
  30 #include "drivers/pwm_rx.h"
  31
  32 #include "config/config.h"
  33
  34 #include "rx/rx.h"
  35 #include "rx/pwm.h"
  36
  37 static uint16_t pwmReadRawRC(rxRuntimeConfig_t *rxRuntimeConfigPtr, uint8_t channel)
  38 {
  39     UNUSED(rxRuntimeConfigPtr);
  40     return pwmRead(channel);
  41 }
  42
  43 static uint16_t ppmReadRawRC(rxRuntimeConfig_t *rxRuntimeConfigPtr, uint8_t channel)
  44 {
  45     UNUSED(rxRuntimeConfigPtr);
  46     return ppmRead(channel);
  47 }
  48
  49 void rxPwmInit(rxRuntimeConfig_t *rxRuntimeConfigPtr, rcReadRawDataPtr *callback)
  50 {
  51     UNUSED(rxRuntimeConfigPtr);
  52     // configure PWM/CPPM read function and max number of channels. serial rx below will override both of these, if enabled
  53     if (feature(FEATURE_RX_PARALLEL_PWM)) {
  54         rxRuntimeConfigPtr->channelCount = MAX_SUPPORTED_RC_PARALLEL_PWM_CHANNEL_COUNT;
  55         *callback = pwmReadRawRC;
  56     }
  57     if (feature(FEATURE_RX_PPM)) {
  58         rxRuntimeConfigPtr->channelCount = MAX_SUPPORTED_RC_PPM_CHANNEL_COUNT;
  59         *callback = ppmReadRawRC;
  60     }
  61 }
  62