src/main/drivers/rcc.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 "rcc_types.h"
  24
  25 enum rcc_reg {
  26     RCC_EMPTY = 0,   // make sure that default value (0) does not enable anything
  27     RCC_AHB,
  28     RCC_APB2,
  29     RCC_APB1,
  30     RCC_AHB1
  31 };
  32
  33 #define RCC_ENCODE(reg, mask) (((reg) << 5) | LOG2_32BIT(mask))
  34 #define RCC_AHB(periph) RCC_ENCODE(RCC_AHB, RCC_AHBENR_ ## periph ## EN)
  35 #define RCC_APB2(periph) RCC_ENCODE(RCC_APB2, RCC_APB2ENR_ ## periph ## EN)
  36 #define RCC_APB1(periph) RCC_ENCODE(RCC_APB1, RCC_APB1ENR_ ## periph ## EN)
  37 #define RCC_AHB1(periph) RCC_ENCODE(RCC_AHB1, RCC_AHB1ENR_ ## periph ## EN)
  38
  39 void RCC_ClockCmd(rccPeriphTag_t periphTag, FunctionalState NewState);
  40 void RCC_ResetCmd(rccPeriphTag_t periphTag, FunctionalState NewState);