src/main/pg/rx_pwm.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 <platform.h>
  22
  23 #if defined(USE_PWM) || defined(USE_PPM)
  24
  25 #include "drivers/io.h"
  26 #include "drivers/nvic.h"
  27 #include "drivers/rx/rx_pwm.h"
  28 #include "drivers/timer.h"
  29
  30 #include "pg/pg.h"
  31 #include "pg/pg_ids.h"
  32
  33 #include "rx_pwm.h"
  34
  35 #ifdef USE_PWM
  36 PG_REGISTER_WITH_RESET_FN(pwmConfig_t, pwmConfig, PG_PWM_CONFIG, 0);
  37
  38 void pgResetFn_pwmConfig(pwmConfig_t *pwmConfig)
  39 {
  40     pwmConfig->inputFilteringMode = INPUT_FILTERING_DISABLED;
  41     int inputIndex = 0;
  42     for (int i = 0; i < USABLE_TIMER_CHANNEL_COUNT && inputIndex < PWM_INPUT_PORT_COUNT; i++) {
  43         if (timerHardware[i].usageFlags & TIM_USE_PWM) {
  44             pwmConfig->ioTags[inputIndex] = timerHardware[i].tag;
  45             inputIndex++;
  46         }
  47     }
  48 }
  49 #endif
  50
  51 #ifdef USE_PPM
  52 PG_REGISTER_WITH_RESET_FN(ppmConfig_t, ppmConfig, PG_PPM_CONFIG, 0);
  53
  54 void pgResetFn_ppmConfig(ppmConfig_t *ppmConfig)
  55 {
  56 #ifdef PPM_PIN
  57     ppmConfig->ioTag = IO_TAG(PPM_PIN);
  58 #else
  59     for (int i = 0; i < USABLE_TIMER_CHANNEL_COUNT; i++) {
  60         if (timerHardware[i].usageFlags & TIM_USE_PPM) {
  61             ppmConfig->ioTag = timerHardware[i].tag;
  62             return;
  63         }
  64     }
  65
  66     ppmConfig->ioTag = IO_TAG_NONE;
  67 #endif
  68 }
  69 #endif
  70
  71 #endif