/************************************************************************************ * arch/arm/src/stm32/stm32_spi.h * * Copyright (C) 2009 Gregory Nutt. All rights reserved. * Author: Gregory Nutt * * 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_STC_STM32_STM32_SPI_H #define __ARCH_ARM_STC_STM32_STM32_SPI_H /************************************************************************************ * Included Files ************************************************************************************/ #include #include "chip.h" #include "chip/stm32_spi.h" /************************************************************************************ * Pre-processor Definitions ************************************************************************************/ #ifndef __ASSEMBLY__ #undef EXTERN #if defined(__cplusplus) #define EXTERN extern "C" extern "C" { #else #define EXTERN extern #endif /************************************************************************************ * Public Data ************************************************************************************/ struct spi_dev_s; enum spi_dev_e; /************************************************************************************ * Public Functions ************************************************************************************/ /************************************************************************************ * 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.h). All other methods * (including up_spiinitialize()) 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 up_spiinitialize() in your low level application * initialization logic * 5. The handle returned by up_spiinitialize() 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). * ************************************************************************************/ EXTERN void stm32_spi1select(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool selected); EXTERN uint8_t stm32_spi1status(FAR struct spi_dev_s *dev, enum spi_dev_e devid); EXTERN int stm32_spi1cmddata(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool cmd); EXTERN void stm32_spi2select(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool selected); EXTERN uint8_t stm32_spi2status(FAR struct spi_dev_s *dev, enum spi_dev_e devid); EXTERN int stm32_spi2cmddata(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool cmd); EXTERN void stm32_spi3select(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool selected); EXTERN uint8_t stm32_spi3status(FAR struct spi_dev_s *dev, enum spi_dev_e devid); EXTERN int stm32_spi3cmddata(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool cmd); EXTERN void stm32_spi4select(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool selected); EXTERN uint8_t stm32_spi4status(FAR struct spi_dev_s *dev, enum spi_dev_e devid); EXTERN int stm32_spi4cmddata(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool cmd); EXTERN void stm32_spi5select(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool selected); EXTERN uint8_t stm32_spi5status(FAR struct spi_dev_s *dev, enum spi_dev_e devid); EXTERN int stm32_spi5cmddata(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool cmd); EXTERN void stm32_spi6select(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool selected); EXTERN uint8_t stm32_spi6status(FAR struct spi_dev_s *dev, enum spi_dev_e devid); EXTERN int stm32_spi6cmddata(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool cmd); #undef EXTERN #if defined(__cplusplus) } #endif #endif /* __ASSEMBLY__ */ #endif /* __ARCH_ARM_STC_STM32_STM32_SPI_H */