/**************************************************************************** * config/kwikstik-k40/src/k40_appinit.c * * Copyright (C) 2011, 2016 Gregory Nutt. All rights reserved. * Author: Gregory Nutt * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * 3. Neither the name NuttX nor the names of its contributors may be * used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. * ****************************************************************************/ /**************************************************************************** * Included Files ****************************************************************************/ #include #include #include #include #include #include #ifdef CONFIG_KINETIS_SDHC # include # include #endif #include "kinetis.h" #include "kwikstik-k40.h" /**************************************************************************** * Pre-processor Definitions ****************************************************************************/ /* Configuration ************************************************************/ /* PORT and SLOT number probably depend on the board configuration */ #ifdef CONFIG_ARCH_BOARD_KWIKSTIK_K40 # define NSH_HAVEUSBDEV 1 # define NSH_HAVEMMCSD 1 # if defined(CONFIG_NSH_MMCSDSLOTNO) && CONFIG_NSH_MMCSDSLOTNO != 0 # error "Only one MMC/SD slot, slot 0" # undef CONFIG_NSH_MMCSDSLOTNO # endif # ifndef CONFIG_NSH_MMCSDSLOTNO # define CONFIG_NSH_MMCSDSLOTNO 0 # endif #else /* Add configuration for new Kinetis boards here */ # error "Unrecognized Kinetis board" # undef NSH_HAVEUSBDEV # undef NSH_HAVEMMCSD #endif /* Can't support USB features if USB is not enabled */ #ifndef CONFIG_USBDEV # undef NSH_HAVEUSBDEV #endif /* Can't support MMC/SD features if mountpoints are disabled or if SDHC support * is not enabled. */ #if defined(CONFIG_DISABLE_MOUNTPOINT) || !defined(CONFIG_KINETIS_SDHC) # undef NSH_HAVEMMCSD #endif #ifndef CONFIG_NSH_MMCSDMINOR # define CONFIG_NSH_MMCSDMINOR 0 #endif /* We expect to receive GPIO interrupts for card insertion events */ #ifndef CONFIG_KINETIS_GPIOIRQ # error "CONFIG_KINETIS_GPIOIRQ required for card detect interrupt" #endif #ifndef CONFIG_KINETIS_PORTEINTS # error "CONFIG_KINETIS_PORTEINTS required for card detect interrupt" #endif /**************************************************************************** * Private Types ****************************************************************************/ /* This structure encapsulates the global variable used in this file and * reduces the probability of name collistions. */ #ifdef NSH_HAVEMMCSD struct kinetis_nsh_s { FAR struct sdio_dev_s *sdhc; /* SDIO driver handle */ bool inserted; /* True: card is inserted */ }; #endif /**************************************************************************** * Private Data ****************************************************************************/ #ifdef NSH_HAVEMMCSD static struct kinetis_nsh_s g_nsh; #endif /**************************************************************************** * Private Functions ****************************************************************************/ /**************************************************************************** * Name: kinetis_mediachange ****************************************************************************/ #ifdef NSH_HAVEMMCSD static void kinetis_mediachange(void) { bool inserted; /* Get the current value of the card detect pin. This pin is pulled up on * board. So low means that a card is present. */ inserted = !kinetis_gpioread(GPIO_SD_CARDDETECT); /* Has the pin changed state? */ if (inserted != g_nsh.inserted) { /* Yes.. perform the appropriate action (this might need some debounce). */ g_nsh.inserted = inserted; sdhc_mediachange(g_nsh.sdhc, inserted); } } #endif /**************************************************************************** * Name: kinetis_cdinterrupt ****************************************************************************/ #ifdef NSH_HAVEMMCSD static int kinetis_cdinterrupt(int irq, FAR void *context) { /* All of the work is done by kinetis_mediachange() */ kinetis_mediachange(); return OK; } #endif /**************************************************************************** * Public Functions ****************************************************************************/ /**************************************************************************** * Name: board_app_initialize * * Description: * Perform architecture specific initialization * * Input Parameters: * arg - The boardctl() argument is passed to the board_app_initialize() * implementation without modification. The argument has no * meaning to NuttX; the meaning of the argument is a contract * between the board-specific initalization logic and the * matching application logic. The value cold be such things as a * mode enumeration value, a set of DIP switch switch settings, a * pointer to configuration data read from a file or serial FLASH, * or whatever you would like to do with it. Every implementation * should accept zero/NULL as a default configuration. * * Returned Value: * Zero (OK) is returned on success; a negated errno value is returned on * any failure to indicate the nature of the failure. * ****************************************************************************/ int board_app_initialize(uintptr_t arg) { #ifdef NSH_HAVEMMCSD int ret; /* Configure GPIO pins. * * First CD power. The initial state will provide SD power. */ kinetis_pinconfig(GPIO_SD_CARDON); /* Applies power to the card */ /* Attached the card detect interrupt (but don't enable it yet) */ kinetis_pinconfig(GPIO_SD_CARDDETECT); (void)kinetis_pinirqattach(GPIO_SD_CARDDETECT, kinetis_cdinterrupt, NULL); /* Mount the SDHC-based MMC/SD block driver */ /* First, get an instance of the SDHC interface */ syslog(LOG_INFO, "Initializing SDHC slot %d\n", CONFIG_NSH_MMCSDSLOTNO); g_nsh.sdhc = sdhc_initialize(CONFIG_NSH_MMCSDSLOTNO); if (!g_nsh.sdhc) { syslog(LOG_ERR, "ERROR: Failed to initialize SDHC slot %d\n", CONFIG_NSH_MMCSDSLOTNO); return -ENODEV; } /* Now bind the SDHC interface to the MMC/SD driver */ syslog(LOG_INFO, "Bind SDHC to the MMC/SD driver, minor=%d\n", CONFIG_NSH_MMCSDMINOR); ret = mmcsd_slotinitialize(CONFIG_NSH_MMCSDMINOR, g_nsh.sdhc); if (ret != OK) { syslog(LOG_ERR, "ERROR: Failed to bind SDHC to the MMC/SD driver: %d\n", ret); return ret; } syslog(LOG_INFO, "Successfully bound SDHC to the MMC/SD driver\n"); /* Handle the initial card state */ kinetis_mediachange(); /* Enable CD interrupts to handle subsequent media changes */ kinetis_pinirqenable(GPIO_SD_CARDDETECT); #endif return OK; }