SAMD20: Add a framework for an SPI driver
This commit is contained in:
Gregory Nutt
parent
916308efc1
commit
ff899bf0e3
@ -6621,4 +6621,7 @@
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* arch/arm/src/samd/sam_sercom.c: Move some common SERCOM logic
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from the USART-specific files to a share-able file where it can
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also be used by SPI and I2C drivers (2014-2-19).
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* arch/arm/src/samd/sam_spi.c: Add framework for a SAMD SPI driver.
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The initial check-in is a crude port of the SAMA5 SPI driver with
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a lot of missing logic (2014-2-19).
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@ -117,11 +117,11 @@
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/* Are any USARTs enabled? */
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#undef HAVE_USART
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#undef SAMD_HAVE_USART
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#if defined(SAMD_HAVE_USART0) || defined(SAMD_HAVE_USART1) || \
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defined(SAMD_HAVE_USART2) || defined(SAMD_HAVE_USART3) || \
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defined(SAMD_HAVE_USART4) || defined(SAMD_HAVE_USART5)
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# define HAVE_USART 1
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# define SAMD_HAVE_USART 1
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#endif
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/* Is there a serial console? There should be at most one defined. It could be on
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@ -219,6 +219,15 @@
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# undef CONFIG_SAMD_SERCOM5_ISSPI
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#endif
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/* Are any SERCOMs configured for SPI? */
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#undef SAMD_HAVE_SPI
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#if defined(SAMD_HAVE_SPI0) || defined(SAMD_HAVE_SPI1) || \
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defined(SAMD_HAVE_SPI2) || defined(SAMD_HAVE_SPI3) || \
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defined(SAMD_HAVE_SPI4) || defined(SAMD_HAVE_SPI5)
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# define SAMD_HAVE_SPI 1
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#endif
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/* Are any SERCOM peripherals are configured as I2C peripherals? */
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#define SAMD_HAVE_I2C0 1
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@ -258,6 +267,15 @@
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# undef CONFIG_SAMD_SERCOM5_ISI2C
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#endif
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/* Are any SERCOMs configured for I2C? */
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#undef SAMD_HAVE_I2C
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#if defined(SAMD_HAVE_I2C0) || defined(SAMD_HAVE_I2C1) || \
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defined(SAMD_HAVE_I2C2) || defined(SAMD_HAVE_I2C3) || \
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defined(SAMD_HAVE_I2C4) || defined(SAMD_HAVE_I2C5)
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# define SAMD_HAVE_I2C 1
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#endif
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/************************************************************************************
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* Public Types
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************************************************************************************/
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@ -87,7 +87,7 @@
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*
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****************************************************************************/
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#ifdef HAVE_USART
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#ifdef SAMD_HAVE_USART
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static void
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sam_wait_synchronization(const struct sam_usart_config_s * const config)
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{
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@ -103,7 +103,7 @@ sam_wait_synchronization(const struct sam_usart_config_s * const config)
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*
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****************************************************************************/
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#ifdef HAVE_USART
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#ifdef SAMD_HAVE_USART
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static inline int
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sam_usart_configure(const struct sam_usart_config_s * const config)
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{
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@ -251,7 +251,7 @@ sam_usart_configure(const struct sam_usart_config_s * const config)
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*
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****************************************************************************/
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#ifdef HAVE_USART
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#ifdef SAMD_HAVE_USART
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static inline void
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sam_pad_configure(const struct sam_usart_config_s * const config)
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{
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@ -289,7 +289,7 @@ sam_pad_configure(const struct sam_usart_config_s * const config)
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*
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*****************************************************************************/
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#ifdef HAVE_USART
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#ifdef SAMD_HAVE_USART
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int sam_usart_internal(const struct sam_usart_config_s * const config)
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{
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uint32_t regval;
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@ -328,7 +328,7 @@ int sam_usart_internal(const struct sam_usart_config_s * const config)
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*
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****************************************************************************/
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#ifdef HAVE_USART
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#ifdef SAMD_HAVE_USART
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static inline void
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sam_usart_enable(const struct sam_usart_config_s * const config)
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{
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@ -381,7 +381,7 @@ void sam_lowsetup(void)
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*
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*****************************************************************************/
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#ifdef HAVE_USART
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#ifdef SAMD_HAVE_USART
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int sam_usart_initialize(const struct sam_usart_config_s * const config)
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{
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irqstate_t flags;
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@ -411,7 +411,7 @@ int sam_usart_initialize(const struct sam_usart_config_s * const config)
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*
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*****************************************************************************/
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#ifdef HAVE_USART
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#ifdef SAMD_HAVE_USART
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void sam_usart_reset(const struct sam_usart_config_s * const config)
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{
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uintptr_t regaddr = config->base + SAM_USART_CTRLA_OFFSET;
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@ -91,7 +91,7 @@ void sam_lowsetup(void);
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*
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****************************************************************************/
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#ifdef HAVE_USART
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#ifdef SAMD_HAVE_USART
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struct sam_usart_config_s;
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int sam_usart_initialize(const struct sam_usart_config_s * const config);
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#endif
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@ -105,7 +105,7 @@ int sam_usart_initialize(const struct sam_usart_config_s * const config);
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*
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****************************************************************************/
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#ifdef HAVE_USART
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#ifdef SAMD_HAVE_USART
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struct sam_usart_config_s;
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void sam_usart_reset(const struct sam_usart_config_s * const config);
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#endif
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@ -66,7 +66,7 @@
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#include "sam_lowputc.h"
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#include "sam_serial.h"
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#ifdef HAVE_USART
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#ifdef SAMD_HAVE_USART
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/****************************************************************************
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* Definitions
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@ -1082,5 +1082,5 @@ int up_putc(int ch)
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}
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#endif /* USE_SERIALDRIVER */
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#endif /* HAVE_USART */
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#endif /* SAMD_HAVE_USART */
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1249
arch/arm/src/samd/sam_spi.c
Normal file
1249
arch/arm/src/samd/sam_spi.c
Normal file
File diff suppressed because it is too large
Load Diff
268
arch/arm/src/samd/sam_spi.h
Normal file
268
arch/arm/src/samd/sam_spi.h
Normal file
@ -0,0 +1,268 @@
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/****************************************************************************
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* arch/arm/src/samd/sam_spi.h
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*
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* Copyright (C) 2014 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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#ifndef __ARCH_ARM_SRC_SAMD_SAM_SPI_H
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#define __ARCH_ARM_SRC_SAMD_SAM_SPI_H
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <stdint.h>
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#include <stdbool.h>
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#include "sam_config.h"
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#ifdef SAMD_HAVE_SPI
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/****************************************************************************
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* Definitions
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****************************************************************************/
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/****************************************************************************
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* Public Types
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****************************************************************************/
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/****************************************************************************
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* Inline Functions
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****************************************************************************/
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#ifndef __ASSEMBLY__
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/****************************************************************************
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* Public Data
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****************************************************************************/
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#undef EXTERN
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#if defined(__cplusplus)
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#define EXTERN extern "C"
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extern "C"
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{
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#else
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#define EXTERN extern
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#endif
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/****************************************************************************
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* Public Function Prototypes
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****************************************************************************/
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/****************************************************************************
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* Name: sam_spi[n]select, sam_spi[n]status, and sam_spi[n]cmddata
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*
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* Description:
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* These external functions must be provided by board-specific logic. They
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* include:
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*
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* o sam_spi[n]select is a functions to manage the board-specific chip
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* selects
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* o sam_spi[n]status and sam_spi[n]cmddata: Implementations of the status
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* and cmddata methods of the SPI interface defined by struct spi_ops_
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* (see include/nuttx/spi/spi.h). All other methods including
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* up_spiinitialize()) are provided by common SAMD logic.
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*
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* Where [n] is the SERCOM number for the SPI module.
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*
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* To use this common SPI logic on your board:
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*
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* 1. Provide logic in sam_boardinitialize() to configure SPI chip select
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* pins.
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* 2. Provide sam_spi[n]select() and sam_spi[n]status() functions in your
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* board-specific logic. These functions will perform chip selection
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* and status operations using GPIOs in the way your board is configured.
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* 2. If CONFIG_SPI_CMDDATA is defined in the NuttX configuration, provide
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* sam_spi[n]cmddata() functions in your board-specific logic. This
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* function will perform cmd/data selection operations using GPIOs in
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* the way your board is configured.
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* 3. Add a call to up_spiinitialize() in your low level application
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* initialization logic
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* 4. The handle returned by up_spiinitialize() may then be used to bind
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* the SPI driver to higher level logic (e.g., calling
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* mmcsd_spislotinitialize(), for example, will bind the SPI driver to
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* the SPI MMC/SD driver).
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*
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****************************************************************************/
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struct spi_dev_s;
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enum spi_dev_e;
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/****************************************************************************
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* Name: sam_spi[n]select
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*
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* Description:
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* PIO chip select pins may be programmed by the board specific logic in
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* one of two different ways. First, the pins may be programmed as SPI
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* peripherals. In that case, the pins are completely controlled by the
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* SPI driver. This method still needs to be provided, but it may be only
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* a stub.
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*
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* An alternative way to program the PIO chip select pins is as a normal
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* GPIO output. In that case, the automatic control of the CS pins is
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* bypassed and this function must provide control of the chip select.
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* NOTE: In this case, the GPIO output pin does *not* have to be the
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* same as the NPCS pin normal associated with the chip select number.
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*
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* Input Parameters:
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* dev - SPI device info
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* devid - Identifies the (logical) device
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* selected - TRUE:Select the device, FALSE:De-select the device
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*
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* Returned Values:
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* None
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*
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****************************************************************************/
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#ifdef SAMD_HAVE_SPI0
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void sam_spi0select(enum spi_dev_e devid, bool selected);
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#endif
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#ifdef SAMD_HAVE_SPI1
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void sam_spi1select(enum spi_dev_e devid, bool selected);
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#endif
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#ifdef SAMD_HAVE_SPI2
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void sam_spi2select(enum spi_dev_e devid, bool selected);
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#endif
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#ifdef SAMD_HAVE_SPI3
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void sam_spi3select(enum spi_dev_e devid, bool selected);
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#endif
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#ifdef SAMD_HAVE_SPI4
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void sam_spi4select(enum spi_dev_e devid, bool selected);
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#endif
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#ifdef SAMD_HAVE_SPI5
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void sam_spi5select(enum spi_dev_e devid, bool selected);
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#endif
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/****************************************************************************
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* Name: sam_spi[n]status
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*
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* Description:
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* Return status information associated with the SPI device.
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*
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* Input Parameters:
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* dev - SPI device info
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* devid - Identifies the (logical) device
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*
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* Returned Values:
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* Bit-encoded SPI status (see include/nuttx/spi/spi.h.
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*
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****************************************************************************/
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#ifdef SAMD_HAVE_SPI0
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uint8_t sam_spi0status(FAR struct spi_dev_s *dev, enum spi_dev_e devid);
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#endif
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#ifdef SAMD_HAVE_SPI1
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uint8_t sam_spi1status(FAR struct spi_dev_s *dev, enum spi_dev_e devid);
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#endif
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#ifdef SAMD_HAVE_SPI2
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uint8_t sam_spi2status(FAR struct spi_dev_s *dev, enum spi_dev_e devid);
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#endif
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#ifdef SAMD_HAVE_SPI3
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uint8_t sam_spi3status(FAR struct spi_dev_s *dev, enum spi_dev_e devid);
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#endif
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#ifdef SAMD_HAVE_SPI4
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uint8_t sam_spi4status(FAR struct spi_dev_s *dev, enum spi_dev_e devid);
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#endif
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#ifdef SAMD_HAVE_SPI5
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uint8_t sam_spi5status(FAR struct spi_dev_s *dev, enum spi_dev_e devid);
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#endif
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/****************************************************************************
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* Name: sam_spi[n]cmddata
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*
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* Description:
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* Some SPI devices require an additional control to determine if the SPI
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* data being sent is a command or is data. If CONFIG_SPI_CMDDATA then
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* this function will be called to different be command and data transfers.
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*
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* This is often needed, for example, by LCD drivers. Some LCD hardware
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* may be configured to use 9-bit data transfers with the 9th bit
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* indicating command or data. That same hardware may be configurable,
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* instead, to use 8-bit data but to require an additional, board-
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* specific GPIO control to distinguish command and data. This function
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* would be needed in that latter case.
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*
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* Input Parameters:
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* dev - SPI device info
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* devid - Identifies the (logical) device
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*
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* Returned Values:
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* Zero on success; a negated errno on failure.
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*
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****************************************************************************/
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#ifdef CONFIG_SPI_CMDDATA
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#ifdef SAMD_HAVE_SPI0
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int sam_spi0cmddata(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool cmd);
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#endif
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#ifdef SAMD_HAVE_SPI1
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int sam_spi1cmddata(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool cmd);
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#endif
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#ifdef SAMD_HAVE_SPI2
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int sam_spi2cmddata(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool cmd);
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#endif
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#ifdef SAMD_HAVE_SPI3
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int sam_spi3cmddata(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool cmd);
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#endif
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#ifdef SAMD_HAVE_SPI4
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int sam_spi4cmddata(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool cmd);
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#endif
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#ifdef SAMD_HAVE_SPI5
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int sam_spi5cmddata(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool cmd);
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#endif
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#endif
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#undef EXTERN
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#if defined(__cplusplus)
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}
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#endif
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#endif /* __ASSEMBLY__ */
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#endif /* SAMD_HAVE_SPI */
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#endif /* __ARCH_ARM_SRC_SAMD_SAM_SPI_H */
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@ -1,4 +1,4 @@
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/************************************************************************************
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/****************************************************************************
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* configs/samd20-xplained/src/sam_spi.c
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*
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* Copyright (C) 2014 Gregory Nutt. All rights reserved.
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@ -31,11 +31,11 @@
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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************************************************************************************/
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****************************************************************************/
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/************************************************************************************
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/****************************************************************************
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* Included Files
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************************************************************************************/
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****************************************************************************/
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#include <nuttx/config.h>
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@ -48,14 +48,15 @@
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#include "sam_config.h"
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#include "sam_port.h"
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#include "sam_spi.h"
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#include "samd20-xplained.h"
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#ifdef SAMD_HAVE_SPI0
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#ifdef SAMD_HAVE_SPI
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/************************************************************************************
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* Definitions
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************************************************************************************/
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/* Configuration ********************************************************************/
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/* Configuration ************************************************************/
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#if defined(CONFIG_SAM4L_XPLAINED_IOMODULE) && \
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defined(CONFIG_SAM4L_XPLAINED_OLED1MODULE) && defined(CONFIG_SPI_OWNBUS)
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@ -80,21 +81,22 @@
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# define spivdbg(x...)
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#endif
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/************************************************************************************
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/****************************************************************************
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* Private Functions
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************************************************************************************/
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****************************************************************************/
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/************************************************************************************
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/****************************************************************************
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* Public Functions
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||||
************************************************************************************/
|
||||
****************************************************************************/
|
||||
|
||||
/************************************************************************************
|
||||
/****************************************************************************
|
||||
* Name: sam_spiinitialize
|
||||
*
|
||||
* Description:
|
||||
* Called to configure SPI chip select PORT pins for the SAM3U10E-EVAL board.
|
||||
* Called to configure SPI chip select PORT pins for the SAMD20 Xplained
|
||||
* Pro board.
|
||||
*
|
||||
************************************************************************************/
|
||||
****************************************************************************/
|
||||
|
||||
void weak_function sam_spiinitialize(void)
|
||||
{
|
||||
@ -116,40 +118,43 @@ void weak_function sam_spiinitialize(void)
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Name: sam_spiselect, sam_spistatus, and sam_spicmddata
|
||||
* Name: sam_spi[n]select, sam_spi[n]status, and sam_spi[n]cmddata
|
||||
*
|
||||
* Description:
|
||||
* These external functions must be provided by board-specific logic. They
|
||||
* include:
|
||||
*
|
||||
* o sam_spiselect is a functions tomanage the board-specific chip selects
|
||||
* o sam_spistatus and sam_spicmddata: Implementations of the status
|
||||
* o sam_spi[n]select is a functions to manage the board-specific chip
|
||||
* selects
|
||||
* o sam_spi[n]status and sam_spi[n]cmddata: Implementations of the status
|
||||
* and cmddata methods of the SPI interface defined by struct spi_ops_
|
||||
* (see include/nuttx/spi/spi.h). All other methods including
|
||||
* up_spiinitialize()) are provided by common SAM3/4 logic.
|
||||
* up_spiinitialize()) are provided by common SAMD logic.
|
||||
*
|
||||
* To use this common SPI logic on your board:
|
||||
* Where [n] is the SERCOM number for the SPI module.
|
||||
*
|
||||
* To use this common SPI logic on your board:
|
||||
*
|
||||
* 1. Provide logic in sam_boardinitialize() to configure SPI chip select
|
||||
* pins.
|
||||
* 2. Provide sam_spiselect() and sam_spistatus() functions in your board-
|
||||
* specific logic. These functions will perform chip selection and
|
||||
* status operations using PORTs in the way your board is configured.
|
||||
* 2. Provide sam_spi[n]select() and sam_spi[n]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.
|
||||
* 2. If CONFIG_SPI_CMDDATA is defined in the NuttX configuration, provide
|
||||
* sam_spicmddata() functions in your board-specific logic. This
|
||||
* function will perform cmd/data selection operations using PORTs in
|
||||
* sam_spi[n]cmddata() functions in your board-specific logic. This
|
||||
* function will perform cmd/data selection operations using GPIOs in
|
||||
* the way your board is configured.
|
||||
* 3. Add a call 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
|
||||
* 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).
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Name: sam_spiselect
|
||||
* Name: sam_spi[n]select
|
||||
*
|
||||
* Description:
|
||||
* PIO chip select pins may be programmed by the board specific logic in
|
||||
@ -159,12 +164,13 @@ void weak_function sam_spiinitialize(void)
|
||||
* a stub.
|
||||
*
|
||||
* An alternative way to program the PIO chip select pins is as a normal
|
||||
* PORT output. In that case, the automatic control of the CS pins is
|
||||
* GPIO output. In that case, the automatic control of the CS pins is
|
||||
* bypassed and this function must provide control of the chip select.
|
||||
* NOTE: In this case, the PORT output pin does *not* have to be the
|
||||
* NOTE: In this case, the GPIO output pin does *not* have to be the
|
||||
* same as the NPCS pin normal associated with the chip select number.
|
||||
*
|
||||
* Input Parameters:
|
||||
* dev - SPI device info
|
||||
* devid - Identifies the (logical) device
|
||||
* selected - TRUE:Select the device, FALSE:De-select the device
|
||||
*
|
||||
@ -173,9 +179,10 @@ void weak_function sam_spiinitialize(void)
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
void sam_spiselect(enum spi_dev_e devid, bool selected)
|
||||
#ifdef SAMD_HAVE_SPI0
|
||||
void sam_spi0select(enum spi_dev_e devid, bool selected)
|
||||
{
|
||||
#ifdef CONFIG_SAM4L_XPLAINED_IOMODULE
|
||||
#ifdef CONFIG_SAMD20_XPLAINED_IOMODULE_EXT1
|
||||
/* Select/de-select the SD card */
|
||||
|
||||
if (devid == SPIDEV_MMCSD)
|
||||
@ -184,13 +191,9 @@ void sam_spiselect(enum spi_dev_e devid, bool selected)
|
||||
|
||||
sam_portwrite(PORT_SD_CS, !selected);
|
||||
}
|
||||
|
||||
#ifdef CONFIG_SAM4L_XPLAINED_OLED1MODULE
|
||||
else
|
||||
#endif
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_SAM4L_XPLAINED_OLED1MODULE
|
||||
#ifdef CONFIG_SAMD20_XPLAINED_OLED1MODULE_EXT1
|
||||
/* Select/de-select the OLED */
|
||||
|
||||
if (devid == SPIDEV_DISPLAY)
|
||||
@ -201,14 +204,67 @@ void sam_spiselect(enum spi_dev_e devid, bool selected)
|
||||
}
|
||||
#endif
|
||||
}
|
||||
#endif
|
||||
|
||||
#ifdef SAMD_HAVE_SPI1
|
||||
void sam_spi1select(enum spi_dev_e devid, bool selected)
|
||||
{
|
||||
#ifdef CONFIG_SAMD20_XPLAINED_IOMODULE_EXT2
|
||||
/* Select/de-select the SD card */
|
||||
|
||||
if (devid == SPIDEV_MMCSD)
|
||||
{
|
||||
/* Active low */
|
||||
|
||||
sam_portwrite(PORT_SD_CS, !selected);
|
||||
}
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_SAMD20_XPLAINED_OLED1MODULE_EXT2
|
||||
/* Select/de-select the OLED */
|
||||
|
||||
if (devid == SPIDEV_DISPLAY)
|
||||
{
|
||||
/* Active low */
|
||||
|
||||
sam_portwrite(PORT_OLED_CS, !selected);
|
||||
}
|
||||
#endif
|
||||
}
|
||||
#endif
|
||||
|
||||
#ifdef SAMD_HAVE_SPI2
|
||||
void sam_spi2select(enum spi_dev_e devid, bool selected)
|
||||
{
|
||||
}
|
||||
#endif
|
||||
|
||||
#ifdef SAMD_HAVE_SPI3
|
||||
void sam_spi3select(enum spi_dev_e devid, bool selected)
|
||||
{
|
||||
}
|
||||
#endif
|
||||
|
||||
#ifdef SAMD_HAVE_SPI4
|
||||
void sam_spi4select(enum spi_dev_e devid, bool selected)
|
||||
{
|
||||
}
|
||||
#endif
|
||||
|
||||
#ifdef SAMD_HAVE_SPI5
|
||||
void sam_spi5select(enum spi_dev_e devid, bool selected)
|
||||
{
|
||||
}
|
||||
#endif
|
||||
|
||||
/****************************************************************************
|
||||
* Name: sam_spistatus
|
||||
* Name: sam_spi[n]status
|
||||
*
|
||||
* Description:
|
||||
* Return status information associated with the SPI device.
|
||||
*
|
||||
* Input Parameters:
|
||||
* dev - SPI device info
|
||||
* devid - Identifies the (logical) device
|
||||
*
|
||||
* Returned Values:
|
||||
@ -216,11 +272,12 @@ void sam_spiselect(enum spi_dev_e devid, bool selected)
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
uint8_t sam_spistatus(FAR struct spi_dev_s *dev, enum spi_dev_e devid)
|
||||
#ifdef SAMD_HAVE_SPI0
|
||||
uint8_t sam_spi0status(FAR struct spi_dev_s *dev, enum spi_dev_e devid)
|
||||
{
|
||||
uint8_t ret = 0;
|
||||
|
||||
#ifdef CONFIG_SAM4L_XPLAINED_IOMODULE
|
||||
#ifdef CONFIG_SAMD20_XPLAINED_IOMODULE_EXT1
|
||||
/* Check if an SD card is present in the microSD slot */
|
||||
|
||||
if (devid == SPIDEV_MMCSD)
|
||||
@ -236,11 +293,62 @@ uint8_t sam_spistatus(FAR struct spi_dev_s *dev, enum spi_dev_e devid)
|
||||
|
||||
return ret;
|
||||
}
|
||||
#endif
|
||||
|
||||
#endif /* SAMD_HAVE_SPI0 */
|
||||
#ifdef SAMD_HAVE_SPI1
|
||||
uint8_t sam_spi1status(FAR struct spi_dev_s *dev, enum spi_dev_e devid)
|
||||
{
|
||||
uint8_t ret = 0;
|
||||
|
||||
#ifdef CONFIG_SAMD20_XPLAINED_IOMODULE_EXT2
|
||||
/* Check if an SD card is present in the microSD slot */
|
||||
|
||||
if (devid == SPIDEV_MMCSD)
|
||||
{
|
||||
/* Active low */
|
||||
|
||||
if (!sam_portread(PORT_SD_CD))
|
||||
{
|
||||
ret |= SPI_STATUS_PRESENT;
|
||||
}
|
||||
}
|
||||
#endif
|
||||
|
||||
return ret;
|
||||
}
|
||||
#endif
|
||||
|
||||
#ifdef SAMD_HAVE_SPI2
|
||||
uint8_t sam_spi2status(FAR struct spi_dev_s *dev, enum spi_dev_e devid)
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
#endif
|
||||
|
||||
#ifdef SAMD_HAVE_SPI3
|
||||
uint8_t sam_spi3status(FAR struct spi_dev_s *dev, enum spi_dev_e devid)
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
#endif
|
||||
|
||||
#ifdef SAMD_HAVE_SPI4
|
||||
uint8_t sam_spi4status(FAR struct spi_dev_s *dev, enum spi_dev_e devid)
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
#endif
|
||||
|
||||
#ifdef SAMD_HAVE_SPI5
|
||||
uint8_t sam_spi5status(FAR struct spi_dev_s *dev, enum spi_dev_e devid)
|
||||
{
|
||||
uint8_t ret = 0;
|
||||
return ret;
|
||||
}
|
||||
#endif
|
||||
|
||||
/****************************************************************************
|
||||
* Name: sam_spicmddata
|
||||
* Name: sam_spi[n]cmddata
|
||||
*
|
||||
* Description:
|
||||
* Some SPI devices require an additional control to determine if the SPI
|
||||
@ -251,7 +359,7 @@ uint8_t sam_spistatus(FAR struct spi_dev_s *dev, enum spi_dev_e devid)
|
||||
* may be configured to use 9-bit data transfers with the 9th bit
|
||||
* indicating command or data. That same hardware may be configurable,
|
||||
* instead, to use 8-bit data but to require an additional, board-
|
||||
* specific PORT control to distinguish command and data. This function
|
||||
* specific GPIO control to distinguish command and data. This function
|
||||
* would be needed in that latter case.
|
||||
*
|
||||
* Input Parameters:
|
||||
@ -264,9 +372,10 @@ uint8_t sam_spistatus(FAR struct spi_dev_s *dev, enum spi_dev_e devid)
|
||||
****************************************************************************/
|
||||
|
||||
#ifdef CONFIG_SPI_CMDDATA
|
||||
int sam_spicmddata(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool cmd)
|
||||
#ifdef SAMD_HAVE_SPI0
|
||||
int sam_spi0cmddata(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool cmd)
|
||||
{
|
||||
#ifdef CONFIG_SAM4L_XPLAINED_OLED1MODULE
|
||||
#ifdef CONFIG_SAMD20_XPLAINED_OLED1MODULE_EXT1
|
||||
if (devid == SPIDEV_DISPLAY)
|
||||
{
|
||||
/* This is the Data/Command control pad which determines whether the
|
||||
@ -283,3 +392,55 @@ int sam_spicmddata(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool cmd)
|
||||
return OK;
|
||||
}
|
||||
#endif
|
||||
|
||||
#ifdef SAMD_HAVE_SPI1
|
||||
int sam_spi1cmddata(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool cmd)
|
||||
{
|
||||
#ifdef CONFIG_SAMD20_XPLAINED_OLED1MODULE_EXT2
|
||||
if (devid == SPIDEV_DISPLAY)
|
||||
{
|
||||
/* This is the Data/Command control pad which determines whether the
|
||||
* data bits are data or a command.
|
||||
*
|
||||
* High: the inputs are treated as display data.
|
||||
* Low: the inputs are transferred to the command registers.
|
||||
*/
|
||||
|
||||
(void)sam_portwrite(PORT_OLED_DATA, !cmd);
|
||||
}
|
||||
#endif
|
||||
|
||||
return OK;
|
||||
}
|
||||
#endif
|
||||
|
||||
#ifdef SAMD_HAVE_SPI2
|
||||
int sam_spi2cmddata(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool cmd)
|
||||
{
|
||||
return OK;
|
||||
}
|
||||
#endif
|
||||
|
||||
#ifdef SAMD_HAVE_SPI3
|
||||
int sam_spi3cmddata(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool cmd)
|
||||
{
|
||||
return OK;
|
||||
}
|
||||
#endif
|
||||
|
||||
#ifdef SAMD_HAVE_SPI4
|
||||
int sam_spi4cmddata(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool cmd)
|
||||
{
|
||||
return OK;
|
||||
}
|
||||
#endif
|
||||
|
||||
#ifdef SAMD_HAVE_SPI5
|
||||
int sam_spi5cmddata(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool cmd)
|
||||
{
|
||||
return OK;
|
||||
}
|
||||
#endif
|
||||
|
||||
#endif /* CONFIG_SPI_CMDDATA */
|
||||
#endif /* SAMD_HAVE_SPI */
|
||||
|
||||
Loading…
Reference in New Issue
Block a user