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SAM4S Xplained Pro: Watchdog timer support for Bob Doison
This commit is contained in:
Gregory Nutt
@@ -7237,3 +7237,6 @@
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Bob Doison (2014-4-21).
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* arch/arm/src/sam34/sam_wdt.c/.h: Add watchdog driver. From Bob
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Doison (2014-4-21).
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* nuttx/configs/sam4s-xplained-pro: Add board-specific watchdog
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timer support. From Bob Doison (2014-4-21).
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@@ -1,9 +1,12 @@
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- implement flash driver
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- see arch/arm/src/stm32/stm32_flash.c and related
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- both banks could be mapped with care taken not to erase the active code.
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- perhaps the MPU could block code corruption?
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- once implemented, the free() cmd replacement can show flash information.
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- implement flash driver
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- see arch/arm/src/stm32/stm32_flash.c and related
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- both banks could be mapped with care taken not to erase the active code.
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- perhaps the MPU could block code corruption?
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- once implemented, the free() cmd replacement can show flash information.
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- Seen crashes when running serial ports below 921600
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- USB serial not quite stable when pushing lots of data
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- UARTs don't use DMA. We may need this for high baudrates.
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- Inbound hardware flow control requires dma.
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@@ -54,8 +54,8 @@
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************************************************************************************/
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/* Clocking *************************************************************************/
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/* After power-on reset, the sam3u device is running on a 4MHz internal RC. These
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* definitions will configure clocking with MCK = 48MHz, PLLA = 96, and CPU=120MHz.
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/* After power-on reset, the sam4s device is running on a 4MHz internal RC. These
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* definitions will configure clocking with MCK = 120MHz, PLLA = 240, and CPU=120MHz.
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*/
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/* Main oscillator register settings */
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@@ -69,6 +69,8 @@
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* PLLdiv: 1 (bypassed)
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* Fpll: (12MHz * 20) / 1 = 240MHz
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*/
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#define BOARD_32KOSC_FREQUENCY (32768)
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#define BOARD_SLCK_FREQUENCY (BOARD_32KOSC_FREQUENCY)
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#define BOARD_MAINOSC_FREQUENCY (12000000)
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#define BOARD_CKGR_PLLAR_MUL (19 << PMC_CKGR_PLLAR_MUL_SHIFT)
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File diff suppressed because it is too large
Load Diff
@@ -68,6 +68,11 @@ ifeq ($(CONFIG_ARCH_BUTTONS),y)
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CSRCS += sam_buttons.c
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endif
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ifeq ($(CONFIG_SAM34_WDT),y)
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CSRCS += sam_wdt.c
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endif
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COBJS = $(CSRCS:.c=$(OBJEXT))
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SRCS = $(ASRCS) $(CSRCS)
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@@ -98,11 +98,10 @@ int nsh_archinitialize(void)
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int ret;
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#endif
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message("initializing...\n");
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#ifdef HAVE_HSMCI
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/* Initialize the HSMCI driver */
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message("initializing HSMCI\n");
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ret = sam_hsmci_initialize();
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if (ret < 0)
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{
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@@ -114,6 +113,7 @@ int nsh_archinitialize(void)
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#ifdef HAVE_PROC
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/* mount the proc filesystem */
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message("Mounting procfs to /proc\n");
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ret = mount(NULL, "/proc", "procfs", 0, NULL);
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if (ret < 0)
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{
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@@ -125,6 +125,7 @@ int nsh_archinitialize(void)
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#ifdef HAVE_USBMONITOR
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/* Start the USB Monitor */
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message("Starting USB Monitor\n");
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ret = usbmonitor_start(0, NULL);
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if (ret != OK)
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{
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@@ -134,6 +135,7 @@ int nsh_archinitialize(void)
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#endif
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#warning "add automount config...."
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message("Mounting /dev/mmcsd0 to /fat\n");
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ret = mount("/dev/mmcsd0", "/fat", "vfat", 0, NULL);
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if (ret < 0)
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{
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@@ -0,0 +1,237 @@
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/************************************************************************************
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* configs/sam4s-xplained-pro/src/up_watchdog.c
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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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/************************************************************************************
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* Included Files
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************************************************************************************/
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#include <nuttx/config.h>
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#include <sys/types.h>
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#include <sys/ioctl.h>
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#include <errno.h>
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#include <debug.h>
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#include <sched.h>
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#include <stdio.h>
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#include <fcntl.h>
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#include <nuttx/watchdog.h>
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#include <arch/board/board.h>
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#include <nuttx/kthread.h>
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#include "sam_wdt.h"
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#include <nuttx/clock.h>
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#ifdef CONFIG_WATCHDOG
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/************************************************************************************
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* Definitions
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************************************************************************************/
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/* Configuration *******************************************************************/
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/* Wathdog hardware should be enabled */
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#if !defined(CONFIG_SAM34_WDT)
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# warning "CONFIG_SAM34_WDT must be defined"
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#endif
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/* Select the path to the registered watchdog timer device */
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#ifndef CONFIG_WATCHDOG_DEVPATH
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# ifdef CONFIG_EXAMPLES_WATCHDOG_DEVPATH
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# define CONFIG_WATCHDOG_DEVPATH CONFIG_EXAMPLES_WATCHDOG_DEVPATH
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# else
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# define CONFIG_WATCHDOG_DEVPATH "/dev/watchdog0"
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# endif
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#endif
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/* Debug ***************************************************************************/
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/* Non-standard debug that may be enabled just for testing the watchdog timer */
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#ifndef CONFIG_DEBUG
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# undef CONFIG_DEBUG_WATCHDOG
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#endif
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#ifdef CONFIG_DEBUG_WATCHDOG
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# define wdgdbg dbg
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# define wdglldbg lldbg
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# ifdef CONFIG_DEBUG_VERBOSE
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# define wdgvdbg vdbg
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# define wdgllvdbg llvdbg
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# else
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# define wdgvdbg(x...)
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# define wdgllvdbg(x...)
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# endif
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#else
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# define wdgdbg(x...)
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# define wdglldbg(x...)
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# define wdgvdbg(x...)
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# define wdgllvdbg(x...)
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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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* Public Functions
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************************************************************************************/
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/*
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Watchdog kicker task
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*/
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#if defined(CONFIG_WDT_THREAD)
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static int wdog_daemon(int argc, char *argv[])
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{
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int fd;
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int ret;
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/* Open the watchdog device for reading */
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wdgvdbg("Opening.\n");
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fd = open(CONFIG_WATCHDOG_DEVPATH, O_RDONLY);
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if (fd < 0)
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{
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wdgdbg("open %s failed: %d\n", CONFIG_WATCHDOG_DEVPATH, errno);
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goto errout;
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}
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/* Start the watchdog timer. */
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wdgvdbg("Starting.\n");
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ret = ioctl(fd, WDIOC_START, 0);
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if (ret < 0)
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{
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wdgdbg("ioctl(WDIOC_START) failed: %d\n", errno);
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goto errout_with_dev;
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}
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while(1)
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{
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usleep((CONFIG_WDT_THREAD_INTERVAL)*1000);
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wdgvdbg("ping\n");
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ret = ioctl(fd, WDIOC_KEEPALIVE, 0);
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if (ret < 0)
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{
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wdgdbg("ioctl(WDIOC_KEEPALIVE) failed: %d\n", errno);
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goto errout_with_dev;
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}
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}
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errout_with_dev:
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close(fd);
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errout:
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return ERROR;
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}
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#endif
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/****************************************************************************
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* Name: up_wdginitialize()
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*
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* Description:
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* Perform architecture-specific initialization of the Watchdog hardware.
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* This interface must be provided by all configurations using
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* apps/examples/watchdog
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*
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****************************************************************************/
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int up_wdginitialize(void)
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{
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#if (defined(CONFIG_SAM34_WDT) && !defined(CONFIG_WDT_DISABLE_ON_RESET))
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int fd;
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int ret;
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/* Initialize tha register the watchdog timer device */
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wdgvdbg("Initializing Watchdog driver...\n");
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sam_wdtinitialize(CONFIG_WATCHDOG_DEVPATH);
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/* Open the watchdog device */
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wdgvdbg("Opening.\n");
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fd = open(CONFIG_WATCHDOG_DEVPATH, O_RDONLY);
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if (fd < 0)
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{
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wdgdbg("open %s failed: %d\n", CONFIG_WATCHDOG_DEVPATH, errno);
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goto errout;
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}
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/* Set the watchdog timeout */
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wdgvdbg("Timeout = %d.\n", CONFIG_WDT_TIMEOUT);
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ret = ioctl(fd, WDIOC_SETTIMEOUT, (unsigned long)CONFIG_WDT_TIMEOUT);
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if (ret < 0)
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{
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wdgdbg("ioctl(WDIOC_SETTIMEOUT) failed: %d\n", errno);
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goto errout_with_dev;
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}
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/* Set the watchdog minimum time */
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wdgvdbg("MinTime = %d.\n", CONFIG_WDT_MINTIME);
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ret = ioctl(fd, WDIOC_MINTIME, (unsigned long)CONFIG_WDT_MINTIME);
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if (ret < 0)
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{
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wdgdbg("ioctl(WDIOC_MINTIME) failed: %d\n", errno);
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goto errout_with_dev;
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}
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/* Start Kicker task */
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#if defined(CONFIG_WDT_THREAD)
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sched_lock();
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int taskid = KERNEL_THREAD(CONFIG_WDT_THREAD_NAME,
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CONFIG_WDT_THREAD_PRIORITY,
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CONFIG_WDT_THREAD_STACKSIZE,
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(main_t)wdog_daemon, (FAR char * const *)NULL);
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ASSERT(taskid > 0);
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sched_unlock();
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#endif
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return OK;
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errout_with_dev:
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close(fd);
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errout:
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return ERROR;
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#else
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return -ENODEV;
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#endif
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}
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#endif /* CONFIG_WATCHDOG */
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