src/main/drivers/bus_spi.h

   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 #pragma once
  19
  20 #define SPI_0_5625MHZ_CLOCK_DIVIDER 128
  21 #define SPI_18MHZ_CLOCK_DIVIDER     2
  22 #define SPI_9MHZ_CLOCK_DIVIDER      4
  23
  24 bool spiInit(SPI_TypeDef *instance);
  25 void spiSetDivisor(SPI_TypeDef *instance, uint16_t divisor);
  26 uint8_t spiTransferByte(SPI_TypeDef *instance, uint8_t in);
  27
  28 bool spiTransfer(SPI_TypeDef *instance, uint8_t *out, const uint8_t *in, int len);
  29
  30 uint16_t spiGetErrorCounter(SPI_TypeDef *instance);
  31 void spiResetErrorCounter(SPI_TypeDef *instance);