flight/pios/inc/pios_spi_priv.h

   1 /**
   2  ******************************************************************************
   3  * @addtogroup PIOS PIOS Core hardware abstraction layer
   4  * @{
   5  * @addtogroup   PIOS_SPI SPI Functions
   6  * @brief PIOS interface to read and write from SPI ports
   7  * @{
   8  *
   9  * @file       pios_spi_priv.h
  10  * @author     The OpenPilot Team, http://www.openpilot.org Copyright (C) 2010.
  11  * @brief      SPI private definitions.
  12  * @see        The GNU Public License (GPL) Version 3
  13  *
  14  *****************************************************************************/
  15 /*
  16  * This program is free software; you can redistribute it and/or modify
  17  * it under the terms of the GNU General Public License as published by
  18  * the Free Software Foundation; either version 3 of the License, or
  19  * (at your option) any later version.
  20  *
  21  * This program is distributed in the hope that it will be useful, but
  22  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  23  * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
  24  * for more details.
  25  *
  26  * You should have received a copy of the GNU General Public License along
  27  * with this program; if not, write to the Free Software Foundation, Inc.,
  28  * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  29  */
  30
  31 #ifndef PIOS_SPI_PRIV_H
  32 #define PIOS_SPI_PRIV_H
  33
  34 #include <pios.h>
  35 #include <pios_stm32.h>
  36
  37 struct pios_spi_cfg {
  38     SPI_TypeDef       *regs;
  39     uint32_t          remap;                         /* GPIO_Remap_* or GPIO_AF_* */
  40     SPI_InitTypeDef   init;
  41     bool use_crc;
  42     struct stm32_dma  dma;
  43     struct stm32_gpio sclk;
  44     struct stm32_gpio miso;
  45     struct stm32_gpio mosi;
  46     uint32_t          slave_count;
  47     struct stm32_gpio ssel[];
  48 };
  49
  50 struct pios_spi_dev {
  51     const struct pios_spi_cfg *cfg;
  52     void    (*callback)(uint8_t, uint8_t);
  53     uint8_t tx_dummy_byte;
  54     uint8_t rx_dummy_byte;
  55 #if defined(PIOS_INCLUDE_FREERTOS)
  56     xSemaphoreHandle busy;
  57 #else
  58     uint8_t busy;
  59 #endif
  60 };
  61
  62 extern int32_t PIOS_SPI_Init(uint32_t *spi_id, const struct pios_spi_cfg *cfg);
  63
  64 #endif /* PIOS_SPI_PRIV_H */
  65
  66 /**
  67  * @}
  68  * @}
  69  */