Merged in OSer916/nuttx/stm32f746g_disco_sd_card (pull request #1075)
Stm32f746g disco sd card * arch/arm/src/stm32f7/stm32_sdmmc.c: fix compile error * boards/arm/stm32f7/stm32f746g-disco: add SD/TF Card Support Approved-by: Gregory Nutt <gnutt@nuttx.org>
This commit is contained in:
OSer
Gregory Nutt
parent
f1ffb300da
commit
56f8af5db3
@ -1774,7 +1774,7 @@ static int stm32_sdmmc_interrupt(int irq, void *context, void *arg)
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{
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/* Terminate the transfer with an error */
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mcerr("ERROR: RX FIFO overrun, remaining: %d\n"
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mcerr("ERROR: RX FIFO overrun, remaining: %d\n",
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priv->remaining);
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stm32_endtransfer(priv,
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SDIOWAIT_TRANSFERDONE | SDIOWAIT_ERROR);
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@ -471,4 +471,46 @@
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#define GPIO_QSPI_IO3 GPIO_QUADSPI_BK1_IO3_2
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#define GPIO_QSPI_SCK GPIO_QUADSPI_CLK
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/* SDMMC */
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/* Stream selections are arbitrary for now but might become important in the future
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* if we set aside more DMA channels/streams.
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*
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* SDIO DMA
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* DMAMAP_SDMMC1_1 = Channel 4, Stream 3
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* DMAMAP_SDMMC1_2 = Channel 4, Stream 6
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*/
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#define DMAMAP_SDMMC1 DMAMAP_SDMMC1_1
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/* SDIO dividers. Note that slower clocking is required when DMA is disabled
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* in order to avoid RX overrun/TX underrun errors due to delayed responses
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* to service FIFOs in interrupt driven mode. These values have not been
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* tuned!!!
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*
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* SDIOCLK=48MHz, SDIO_CK=SDIOCLK/(118+2)=400 KHz
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*/
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#define STM32_SDMMC_INIT_CLKDIV (118 << STM32_SDMMC_CLKCR_CLKDIV_SHIFT)
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/* DMA ON: SDIOCLK=48MHz, SDIO_CK=SDIOCLK/(1+2)=16 MHz
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* DMA OFF: SDIOCLK=48MHz, SDIO_CK=SDIOCLK/(2+2)=12 MHz
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*/
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#ifdef CONFIG_SDIO_DMA
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# define STM32_SDMMC_MMCXFR_CLKDIV (1 << STM32_SDMMC_CLKCR_CLKDIV_SHIFT)
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#else
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# define STM32_SDMMC_MMCXFR_CLKDIV (2 << STM32_SDMMC_CLKCR_CLKDIV_SHIFT)
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#endif
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/* DMA ON: SDIOCLK=48MHz, SDIO_CK=SDIOCLK/(1+2)=16 MHz
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* DMA OFF: SDIOCLK=48MHz, SDIO_CK=SDIOCLK/(2+2)=12 MHz
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*/
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#ifdef CONFIG_SDIO_DMA
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# define STM32_SDMMC_SDXFR_CLKDIV (1 << STM32_SDMMC_CLKCR_CLKDIV_SHIFT)
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#else
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# define STM32_SDMMC_SDXFR_CLKDIV (2 << STM32_SDMMC_CLKCR_CLKDIV_SHIFT)
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#endif
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#endif /* __BOARDS_ARM_STM32F7_STM32F746G_DISCO_INCLUDE_BOARD_H */
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@ -80,4 +80,8 @@ ifeq ($(CONFIG_MTD_N25QXXX),y)
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CSRCS += stm32_n25q.c
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endif
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ifeq ($(CONFIG_STM32F7_SDMMC), y)
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CSRCS += stm32_sdmmc.c
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endif
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include $(TOPDIR)/boards/Board.mk
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@ -146,6 +146,15 @@ int stm32_bringup(void)
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}
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#endif
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#ifdef HAVE_SDIO
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ret = stm32_sdio_initialize();
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if (ret < 0)
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{
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syslog(LOG_ERR, "ERROR: stm32_n25qxxx_setup failed: %d\n", ret);
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}
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#endif
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UNUSED(ret); /* May not be used */
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return OK;
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}
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176
boards/arm/stm32f7/stm32f746g-disco/src/stm32_sdmmc.c
Normal file
176
boards/arm/stm32f7/stm32f746g-disco/src/stm32_sdmmc.c
Normal file
@ -0,0 +1,176 @@
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/****************************************************************************
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* boards/arm/stm32f7/stm32f746g-disco/src/stm32_sdmmc.c
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*
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* Copyright (C) 2016-2019 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 <stdbool.h>
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#include <stdio.h>
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#include <debug.h>
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#include <errno.h>
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#include <nuttx/sdio.h>
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#include <nuttx/mmcsd.h>
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#include "stm32_gpio.h"
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#include "stm32_sdmmc.h"
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#include "stm32f746g-disco.h"
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/* Configuration ************************************************************/
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/* Card detections requires card support and a card detection GPIO */
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#define HAVE_NCD 1
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#if !defined(HAVE_SDIO) || !defined(GPIO_SDIO_NCD)
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# undef HAVE_NCD
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#endif
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/****************************************************************************
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* Private Data
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****************************************************************************/
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static FAR struct sdio_dev_s *g_sdio_dev;
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#ifdef HAVE_NCD
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static bool g_sd_inserted = 0xff; /* Impossible value */
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#endif
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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/****************************************************************************
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* Name: stm32_ncd_interrupt
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*
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* Description:
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* Card detect interrupt handler.
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*
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****************************************************************************/
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#ifdef HAVE_NCD
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static int stm32_ncd_interrupt(int irq, FAR void *context, FAR void *param)
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{
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bool present;
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present = !stm32_gpioread(GPIO_SDIO_NCD);
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if (present != g_sd_inserted)
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{
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sdio_mediachange(g_sdio_dev, present);
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g_sd_inserted = present;
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}
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return OK;
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}
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#endif
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: stm32_sdio_initialize
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*
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* Description:
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* Initialize SDIO-based MMC/SD card support
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*
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****************************************************************************/
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int stm32_sdio_initialize(void)
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{
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int ret;
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#ifdef HAVE_NCD
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/* Card detect */
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bool cd_status;
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/* Configure the card detect GPIO */
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stm32_configgpio(GPIO_SDIO_NCD);
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/* Register an interrupt handler for the card detect pin */
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(void)stm32_gpiosetevent(GPIO_SDIO_NCD, true, true, true,
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stm32_ncd_interrupt, NULL);
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#endif
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/* Mount the SDIO-based MMC/SD block driver */
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/* First, get an instance of the SDIO interface */
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finfo("Initializing SDIO slot %d\n", SDIO_SLOTNO);
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g_sdio_dev = sdio_initialize(SDIO_SLOTNO);
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if (!g_sdio_dev)
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{
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ferr("ERROR: Failed to initialize SDIO slot %d\n", SDIO_SLOTNO);
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return -ENODEV;
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}
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/* Now bind the SDIO interface to the MMC/SD driver */
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finfo("Bind SDIO to the MMC/SD driver, minor=%d\n", SDIO_MINOR);
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ret = mmcsd_slotinitialize(SDIO_MINOR, g_sdio_dev);
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if (ret != OK)
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{
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ferr("ERROR: Failed to bind SDIO to the MMC/SD driver: %d\n", ret);
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return ret;
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}
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finfo("Successfully bound SDIO to the MMC/SD driver\n");
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#ifdef HAVE_NCD
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/* Use SD card detect pin to check if a card is g_sd_inserted */
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cd_status = !stm32_gpioread(GPIO_SDIO_NCD);
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finfo("Card detect : %d\n", cd_status);
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sdio_mediachange(g_sdio_dev, cd_status);
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#else
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/* Assume that the SD card is inserted. What choice do we have? */
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sdio_mediachange(g_sdio_dev, true);
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#endif
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return OK;
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}
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@ -58,6 +58,12 @@
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# endif
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#endif
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#ifdef CONFIG_STM32F7_SDMMC
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#define HAVE_SDIO
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#else
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#undef HAVE_SDIO
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#endif
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/* STM32F736G Discovery GPIOs ***********************************************/
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/* The STM32F746G-DISCO board has numerous LEDs but only one,
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@ -106,6 +112,14 @@
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#define GPIO_LCD_BL (GPIO_OUTPUT|GPIO_PUSHPULL|GPIO_SPEED_50MHz|\
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GPIO_OUTPUT_SET|GPIO_PORTK|GPIO_PIN3)
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/* SD/TF Card'detected pin */
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#define GPIO_SDIO_NCD (GPIO_INPUT|GPIO_FLOAT|GPIO_EXTI|GPIO_PORTC|GPIO_PIN13)
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#define SDIO_SLOTNO 0
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#define SDIO_MINOR 0
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/****************************************************************************
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* Public data
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****************************************************************************/
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@ -216,6 +230,10 @@ int stm32_tsc_setup(int minor);
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int stm32_n25qxxx_setup(void);
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#endif
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#ifdef HAVE_SDIO
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int stm32_sdio_initialize(void);
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#endif
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#endif /* __ASSEMBLY__ */
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#endif /* __BOARDS_ARM_STM32F7_STM32F746G_DISCO_SRC_STM32F746G_DISCO_H */
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