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author | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2011-08-05 19:33:13 +0000 |
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committer | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2011-08-05 19:33:13 +0000 |
commit | 8f0b435a518c39a6141bbf888aa4bcd879808d44 (patch) | |
tree | fbb26e9e98d595d4ecae4c372b920b29638b4fd6 /nuttx/configs/kwikstik-k40/src/up_spi.c | |
parent | 995855bd907c315e68b5a7865a065c6afa6512b6 (diff) | |
download | px4-nuttx-8f0b435a518c39a6141bbf888aa4bcd879808d44.tar.gz px4-nuttx-8f0b435a518c39a6141bbf888aa4bcd879808d44.tar.bz2 px4-nuttx-8f0b435a518c39a6141bbf888aa4bcd879808d44.zip |
Add directory structure to support the port to the Kinesis KwikStik-K40
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@3845 42af7a65-404d-4744-a932-0658087f49c3
Diffstat (limited to 'nuttx/configs/kwikstik-k40/src/up_spi.c')
-rwxr-xr-x | nuttx/configs/kwikstik-k40/src/up_spi.c | 164 |
1 files changed, 164 insertions, 0 deletions
diff --git a/nuttx/configs/kwikstik-k40/src/up_spi.c b/nuttx/configs/kwikstik-k40/src/up_spi.c new file mode 100755 index 000000000..d5d8865ce --- /dev/null +++ b/nuttx/configs/kwikstik-k40/src/up_spi.c @@ -0,0 +1,164 @@ +/************************************************************************************ + * configs/kwikstik-k40/src/up_spi.c + * arch/arm/src/board/up_spi.c + * + * Copyright (C) 2011 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <spudmonkey@racsa.co.cr> + * + * 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. + * + ************************************************************************************/ + +/************************************************************************************ + * Included Files + ************************************************************************************/ + +#include <nuttx/config.h> + +#include <stdint.h> +#include <stdbool.h> +#include <debug.h> + +#include <nuttx/spi.h> +#include <arch/board/board.h> + +#include "up_arch.h" +#include "chip.h" +#include "kinetis_internal.h" +#include "kwikstick-internal.h" + +#if defined(CONFIG_KINETIS_SPI1) || defined(CONFIG_KINETIS_SPI2) + +/************************************************************************************ + * Definitions + ************************************************************************************/ + +/* Enables debug output from this file (needs CONFIG_DEBUG too) */ + +#ifdef CONFIG_DEBUG_SPI +# define spidbg lldbg +# ifdef CONFIG_DEBUG_SPI_VERBOSE +# define spivdbg lldbg +# else +# define spivdbg(x...) +# endif +#else +# undef CONFIG_DEBUG_SPI_VERBOSE +# define spidbg(x...) +# define spivdbg(x...) +#endif + +/************************************************************************************ + * Private Functions + ************************************************************************************/ + +/************************************************************************************ + * Public Functions + ************************************************************************************/ + +/************************************************************************************ + * Name: kinetis_spiinitialize + * + * Description: + * Called to configure SPI chip select GPIO pins for the KwikStik-K40 board. + * + ************************************************************************************/ + +void weak_function kinetis_spiinitialize(void) +{ +# warning "Missing logic" +} + +/**************************************************************************** + * Name: kinetis_spi1/2/3select and kinetis_spi1/2/3status + * + * Description: + * The external functions, kinetis_spi1/2/3select and kinetis_spi1/2/3status must be + * provided by board-specific logic. They are implementations of the select + * and status 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 Kinetis logic. To use this common SPI logic on your + * board: + * + * 1. Provide logic in kinetis_boardinitialize() to configure SPI chip select + * pins. + * 2. Provide kinetis_spi1/2/3select() and kinetis_spi1/2/3status() 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. Add a calls to up_spiinitialize() in your low level application + * initialization logic + * 4. 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). + * + ****************************************************************************/ + +#ifdef CONFIG_KINETIS_SPI1 +void kinetis_spi1select(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool selected) +{ + spidbg("devid: %d CS: %s\n", (int)devid, selected ? "assert" : "de-assert"); +# warning "Missing logic" +} + +uint8_t kinetis_spi1status(FAR struct spi_dev_s *dev, enum spi_dev_e devid) +{ +# warning "Missing logic" + return SPI_STATUS_PRESENT; +} +#endif + +#ifdef CONFIG_KINETIS_SPI2 +void kinetis_spi2select(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool selected) +{ + spidbg("devid: %d CS: %s\n", (int)devid, selected ? "assert" : "de-assert"); +# warning "Missing logic" +} + +uint8_t kinetis_spi2status(FAR struct spi_dev_s *dev, enum spi_dev_e devid) +{ +# warning "Missing logic" + return SPI_STATUS_PRESENT; +} +#endif + +#ifdef CONFIG_KINETIS_SPI3 +void kinetis_spi3select(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool selected) +{ + spidbg("devid: %d CS: %s\n", (int)devid, selected ? "assert" : "de-assert"); +# warning "Missing logic" +} + +uint8_t kinetis_spi3status(FAR struct spi_dev_s *dev, enum spi_dev_e devid) +{ +# warning "Missing logic" + return SPI_STATUS_PRESENT; +} +#endif + +#endif /* CONFIG_KINETIS_SPI1 || CONFIG_KINETIS_SPI2 */ |