Merged in antmerlino/nuttx/photon-spi (pull request #512)
photon: Support SPI1 and SPI3 Approved-by: Gregory Nutt <gnutt@nuttx.org>
This commit is contained in:
Anthony Merlino
Gregory Nutt
parent
e9fa96258b
commit
433b997bc6
@ -204,6 +204,18 @@
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# define GPIO_USART1_TX GPIO_USART1_TX_1
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#endif
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/* SPI1 */
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#define GPIO_SPI1_MISO GPIO_SPI1_MISO_1 /* PA6 */
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#define GPIO_SPI1_MOSI GPIO_SPI1_MOSI_1 /* PA7 */
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#define GPIO_SPI1_SCK GPIO_SPI1_SCK_1 /* PA5 */
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/* SPI3 */
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#define GPIO_SPI3_MISO GPIO_SPI3_MISO_1 /* PB4 */
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#define GPIO_SPI3_MOSI GPIO_SPI3_MOSI_1 /* PB5 */
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#define GPIO_SPI3_SCK GPIO_SPI3_SCK_1 /* PB3 */
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/* SDIO definitions *****************************************************************/
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/* Note that slower clocking is required when DMA is disabled in order
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@ -35,7 +35,7 @@
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-include $(TOPDIR)/Make.defs
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ASRCS =
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CSRCS = stm32_boot.c stm32_bringup.c
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CSRCS = stm32_boot.c stm32_bringup.c stm32_spi.c
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ifeq ($(CONFIG_PHOTON_DFU_BOOTLOADER),y)
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CSRCS += dfu_signature.c
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@ -104,6 +104,16 @@
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int stm32_bringup(void);
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#endif
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/****************************************************************************
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* Name: stm32_spidev_initialize
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*
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* Description:
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* Called to configure SPI chip select GPIO pins for the Photon board.
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*
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****************************************************************************/
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void weak_function stm32_spidev_initialize(void);
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/****************************************************************************
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* Name: photon_watchdog_initialize()
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*
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@ -61,6 +61,17 @@
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void stm32_boardinitialize(void)
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{
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#if defined(CONFIG_STM32_SPI1) || defined(CONFIG_STM32_SPI2) || defined(CONFIG_STM32_SPI3)
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/* Configure SPI chip selects if 1) SPI is not disabled, and 2) the weak function
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* stm32_spidev_initialize() has been brought into the link.
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*/
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if (stm32_spidev_initialize)
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{
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stm32_spidev_initialize();
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}
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#endif
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#ifdef CONFIG_STM32_OTGHS
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/* Initialize USB if the 1) OTG HS controller is in the configuration and 2)
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* disabled, and 3) the weak function stm32_usbinitialize() has been brought
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194
configs/photon/src/stm32_spi.c
Normal file
194
configs/photon/src/stm32_spi.c
Normal file
@ -0,0 +1,194 @@
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/************************************************************************************
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* configs/photon/src/stm32_spi.c
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*
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* Copyright (C) 2017 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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/************************************************************************************
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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 <errno.h>
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#include <debug.h>
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#include <nuttx/spi/spi.h>
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#include <arch/board/board.h>
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#include "up_arch.h"
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#include "chip.h"
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#include "stm32.h"
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#include "photon.h"
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#if defined(CONFIG_STM32_SPI1) || defined(CONFIG_STM32_SPI2) || defined(CONFIG_STM32_SPI3)
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/************************************************************************************
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* Public Functions
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************************************************************************************/
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/************************************************************************************
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* Name: stm32_spidev_initialize
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*
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* Description:
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* Called to configure SPI chip select GPIO pins for the Mikroe Clicker2 STM32 board.
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*
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************************************************************************************/
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void weak_function stm32_spidev_initialize(void)
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{
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}
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/****************************************************************************
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* Name: stm32_spi1/2/3select and stm32_spi1/2/3status
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*
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* Description:
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* The external functions, stm32_spi1/2/3select and stm32_spi1/2/3status must be
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* provided by board-specific logic. They are implementations of the select
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* and status methods of the SPI interface defined by struct spi_ops_s (see
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* include/nuttx/spi/spi.h). All other methods (including stm32_spibus_initialize())
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* are provided by common STM32 logic. To use this common SPI logic on your
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* board:
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*
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* 1. Provide logic in stm32_boardinitialize() to configure SPI chip select
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* pins.
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* 2. Provide stm32_spi1/2/3select() and stm32_spi1/2/3status() functions in your
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* board-specific logic. These functions will perform chip selection and
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* status operations using GPIOs in the way your board is configured.
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* 3. Add a calls to stm32_spibus_initialize() in your low level application
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* initialization logic
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* 4. The handle returned by stm32_spibus_initialize() may then be used to bind the
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* 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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#ifdef CONFIG_STM32_SPI1
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void stm32_spi1select(FAR struct spi_dev_s *dev, uint32_t devid, bool selected)
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{
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spiinfo("devid: %d CS: %s\n", (int)devid, selected ? "assert" : "de-assert");
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}
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uint8_t stm32_spi1status(FAR struct spi_dev_s *dev, uint32_t devid)
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{
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return 0;
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}
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#endif
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#ifdef CONFIG_STM32_SPI2
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void stm32_spi2select(FAR struct spi_dev_s *dev, uint32_t devid, bool selected)
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{
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spiinfo("devid: %d CS: %s\n", (int)devid, selected ? "assert" : "de-assert");
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}
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uint8_t stm32_spi2status(FAR struct spi_dev_s *dev, uint32_t devid)
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{
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return 0;
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}
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#endif
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#ifdef CONFIG_STM32_SPI3
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void stm32_spi3select(FAR struct spi_dev_s *dev, uint32_t devid, bool selected)
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{
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spiinfo("devid: %d CS: %s\n", (int)devid, selected ? "assert" : "de-assert");
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}
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uint8_t stm32_spi3status(FAR struct spi_dev_s *dev, uint32_t devid)
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{
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switch (devid)
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{
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default:
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break;
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}
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return 0;
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}
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#endif
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/****************************************************************************
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* Name: stm32_spi1cmddata
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*
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* Description:
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* Set or clear the SH1101A A0 or SD1306 D/C n bit to select data (true)
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* or command (false). This function must be provided by platform-specific
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* logic. This is an implementation of the cmddata method of the SPI
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* interface defined by struct spi_ops_s (see include/nuttx/spi/spi.h).
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*
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* Input Parameters:
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*
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* spi - SPI device that controls the bus the device that requires the CMD/
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* DATA selection.
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* devid - If there are multiple devices on the bus, this selects which one
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* to select cmd or data. NOTE: This design restricts, for example,
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* one one SPI display per SPI bus.
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* cmd - true: select command; false: select data
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*
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* Returned Value:
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* None
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*
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****************************************************************************/
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#ifdef CONFIG_SPI_CMDDATA
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#ifdef CONFIG_STM32_SPI1
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int stm32_spi1cmddata(FAR struct spi_dev_s *dev, uint32_t devid, bool cmd)
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{
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return -ENODEV;
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}
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#endif
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#ifdef CONFIG_STM32_SPI2
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int stm32_spi2cmddata(FAR struct spi_dev_s *dev, uint32_t devid, bool cmd)
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{
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/* To be provided */
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return -ENODEV;
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}
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#endif
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#ifdef CONFIG_STM32_SPI3
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int stm32_spi3cmddata(FAR struct spi_dev_s *dev, uint32_t devid, bool cmd)
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{
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/* To be provided */
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return -ENODEV;
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}
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#endif
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#endif /* CONFIG_SPI_CMDDATA */
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#endif /* CONFIG_STM32_SPI1 || CONFIG_STM32_SPI2 */
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