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nuttx/arch/arm/src/stm32h7/stm32_spi.h
Mateusz Szafoni 7329c81503 Merged in raiden00/nuttx_h7 (pull request #742) 
Add basic SPI support for H7

* stm32h7: basic SPI support (nodma, noirq)

* nucleo-h743zi: nrf24l01 support

* nrf24l01.c: fix compilation errors

* stm32h7x3xx_rcc.c: enable SYSCFG clock

Approved-by: GregoryN <gnutt@nuttx.org>
2018-10-28 12:43:08 +00:00

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/************************************************************************************
* arch/arm/src/stm32h7/stm32_spi.h
*
* Copyright (C) 2018 Gregory Nutt. All rights reserved.
* Authors: Gregory Nutt <gnutt@nuttx.org>
* David Sidrane <david_s5@nscdg.com>
* Modified for STM32H7 by Mateusz Szafoni <raiden00@railab.me>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************************************/
#ifndef __ARCH_ARM_SRC_STM32H7_STM32_SPI_H
#define __ARCH_ARM_SRC_STM32H7_STM32_SPI_H
/************************************************************************************
* Included Files
************************************************************************************/
#include <nuttx/config.h>
#include <stdbool.h>
#include "chip.h"
#include "chip/stm32_spi.h"
/************************************************************************************
* Public Functions
************************************************************************************/
#ifndef __ASSEMBLY__
#undef EXTERN
#if defined(__cplusplus)
#define EXTERN extern "C"
extern "C"
{
#else
#define EXTERN extern
#endif
struct spi_dev_s; /* Forward reference */
/************************************************************************************
* Name: stm32_spibus_initialize
*
* Description:
* Initialize the selected SPI bus
*
* Input Parameters:
* bus number (for hardware that has mutiple SPI interfaces)
*
* Returned Value:
* Valid SPI device structure reference on succcess; a NULL on failure
*
************************************************************************************/
FAR struct spi_dev_s *stm32_spibus_initialize(int bus);
/************************************************************************************
* Name: stm32_spi1/2/...select and stm32_spi1/2/...status
*
* Description:
* The external functions, stm32_spi1/2/...select, stm32_spi1/2/...status, and
* stm32_spi1/2/...cmddata must be provided by board-specific logic. These are
* implementations of the select, status, and cmddata methods of the SPI interface
* defined by struct spi_ops_s (see include/nuttx/spi/spi.h). All other methods
* (including stm32_spibus_initialize()) are provided by common STM32 logic. To use this
* common SPI logic on your board:
*
* 1. Provide logic in stm32_boardinitialize() to configure SPI chip select
* pins.
* 2. Provide stm32_spi1/2/...select() and stm32_spi1/2/...status() functions in your
* board-specific logic. These functions will perform chip selection and
* status operations using GPIOs in the way your board is configured.
* 3. If CONFIG_SPI_CMDDATA is defined in your NuttX configuration file, then
* provide stm32_spi1/2/...cmddata() functions in your board-specific logic.
* These functions will perform cmd/data selection operations using GPIOs in the
* way your board is configured.
* 4. Add a calls to stm32_spibus_initialize() in your low level application
* initialization logic
* 5. The handle returned by stm32_spibus_initialize() may then be used to bind the
* SPI driver to higher level logic (e.g., calling
* mmcsd_spislotinitialize(), for example, will bind the SPI driver to
* the SPI MMC/SD driver).
*
************************************************************************************/
#ifdef CONFIG_STM32H7_SPI1
void stm32_spi1select(FAR struct spi_dev_s *dev, uint32_t devid, bool selected);
uint8_t stm32_spi1status(FAR struct spi_dev_s *dev, uint32_t devid);
int stm32_spi1cmddata(FAR struct spi_dev_s *dev, uint32_t devid, bool cmd);
#endif
#ifdef CONFIG_STM32H7_SPI2
void stm32_spi2select(FAR struct spi_dev_s *dev, uint32_t devid, bool selected);
uint8_t stm32_spi2status(FAR struct spi_dev_s *dev, uint32_t devid);
int stm32_spi2cmddata(FAR struct spi_dev_s *dev, uint32_t devid, bool cmd);
#endif
#ifdef CONFIG_STM32H7_SPI3
void stm32_spi3select(FAR struct spi_dev_s *dev, uint32_t devid, bool selected);
uint8_t stm32_spi3status(FAR struct spi_dev_s *dev, uint32_t devid);
int stm32_spi3cmddata(FAR struct spi_dev_s *dev, uint32_t devid, bool cmd);
#endif
#ifdef CONFIG_STM32H7_SPI4
void stm32_spi4select(FAR struct spi_dev_s *dev, uint32_t devid, bool selected);
uint8_t stm32_spi4status(FAR struct spi_dev_s *dev, uint32_t devid);
int stm32_spi4cmddata(FAR struct spi_dev_s *dev, uint32_t devid, bool cmd);
#endif
#ifdef CONFIG_STM32H7_SPI5
void stm32_spi5select(FAR struct spi_dev_s *dev, uint32_t devid, bool selected);
uint8_t stm32_spi5status(FAR struct spi_dev_s *dev, uint32_t devid);
int stm32_spi5cmddata(FAR struct spi_dev_s *dev, uint32_t devid, bool cmd);
#endif
#ifdef CONFIG_STM32H7_SPI6
void stm32_spi6select(FAR struct spi_dev_s *dev, uint32_t devid, bool selected);
uint8_t stm32_spi6status(FAR struct spi_dev_s *dev, uint32_t devid);
int stm32_spi6cmddata(FAR struct spi_dev_s *dev, uint32_t devid, bool cmd);
#endif
/************************************************************************************
* Name: stm32_spi1/2/...register
*
* Description:
* If the board supports a card detect callback to inform the SPI-based MMC/SD
* driver when an SD card is inserted or removed, then CONFIG_SPI_CALLBACK should
* be defined and the following function(s) must be implemented. These functions
* implements the registercallback method of the SPI interface (see
* include/nuttx/spi/spi.h for details)
*
* Input Parameters:
* dev - Device-specific state data
* callback - The function to call on the media change
* arg - A caller provided value to return with the callback
*
* Returned Value:
* 0 on success; negated errno on failure.
*
****************************************************************************/
#ifdef CONFIG_SPI_CALLBACK
#ifdef CONFIG_STM32H7_SPI1
int stm32_spi1register(FAR struct spi_dev_s *dev, spi_mediachange_t callback,
FAR void *arg);
#endif
#ifdef CONFIG_STM32H7_SPI2
int stm32_spi2register(FAR struct spi_dev_s *dev, spi_mediachange_t callback,
FAR void *arg);
#endif
#ifdef CONFIG_STM32H7_SPI3
int stm32_spi3register(FAR struct spi_dev_s *dev, spi_mediachange_t callback,
FAR void *arg);
#endif
#ifdef CONFIG_STM32H7_SPI4
int stm32_spi4register(FAR struct spi_dev_s *dev, spi_mediachange_t callback,
FAR void *arg);
#endif
#ifdef CONFIG_STM32H7_SPI5
int stm32_spi5register(FAR struct spi_dev_s *dev, spi_mediachange_t callback,
FAR void *arg);
#endif
#ifdef CONFIG_STM32H7_SPI6
int stm32_spi6register(FAR struct spi_dev_s *dev, spi_mediachange_t callback,
FAR void *arg);
#endif
#endif
#undef EXTERN
#if defined(__cplusplus)
}
#endif
#endif /* __ASSEMBLY__ */
#endif /* __ARCH_ARM_SRC_STM32H7_STM32_SPI_H */
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