2012-01-11 14:01:26 +01:00
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/****************************************************************************
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2012-07-27 23:08:56 +02:00
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* configs/stm32f4discovery/src/up_leds.c
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2012-01-11 14:01:26 +01:00
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* arch/arm/src/board/up_leds.c
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*
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* Copyright (C) 2011 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 <debug.h>
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#include <arch/board/board.h>
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2012-07-25 15:35:36 +02:00
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#include <nuttx/power/pm.h>
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2012-01-11 14:01:26 +01:00
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#include "chip.h"
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#include "up_arch.h"
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#include "up_internal.h"
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#include "stm32_internal.h"
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#include "stm32f4discovery-internal.h"
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#ifndef CONFIG_ARCH_LEDS
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/****************************************************************************
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* Definitions
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****************************************************************************/
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/* Enables debug output from this file (needs CONFIG_DEBUG with
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* CONFIG_DEBUG_VERBOSE too)
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*/
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#undef LED_DEBUG /* Define to enable debug */
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#ifdef LED_DEBUG
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# define leddbg lldbg
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# define ledvdbg llvdbg
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#else
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# define leddbg(x...)
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# define ledvdbg(x...)
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#endif
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/****************************************************************************
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* Private Data
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****************************************************************************/
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/* This array maps an LED number to GPIO pin configuration */
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static uint32_t g_ledcfg[BOARD_NLEDS] =
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{
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GPIO_LED1, GPIO_LED2, GPIO_LED3, GPIO_LED4
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};
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2012-07-25 15:35:36 +02:00
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/****************************************************************************
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* Private Function Protototypes
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****************************************************************************/
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/* LED Power Management */
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#ifdef CONFIG_PM
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static void led_pm_notify(struct pm_callback_s *cb, enum pm_state_e pmstate);
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static int led_pm_prepare(struct pm_callback_s *cb, enum pm_state_e pmstate);
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#endif
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/****************************************************************************
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* Private Data
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****************************************************************************/
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#ifdef CONFIG_PM
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static struct pm_callback_s g_ledscb =
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{
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.notify = led_pm_notify,
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.prepare = led_pm_prepare,
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};
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#endif
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2012-01-11 14:01:26 +01:00
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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2012-07-25 15:35:36 +02:00
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/****************************************************************************
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* Name: led_pm_notify
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*
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* Description:
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* Notify the driver of new power state. This callback is called after
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* all drivers have had the opportunity to prepare for the new power state.
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*
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****************************************************************************/
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#ifdef CONFIG_PM
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static void led_pm_notify(struct pm_callback_s *cb , enum pm_state_e pmstate)
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{
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switch (pmstate)
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{
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case(PM_NORMAL):
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{
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/* Restore normal LEDs operation */
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}
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break;
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case(PM_IDLE):
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{
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/* Entering IDLE mode - Turn leds off */
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}
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break;
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case(PM_STANDBY):
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{
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/* Entering STANDBY mode - Logic for PM_STANDBY goes here */
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}
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break;
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case(PM_SLEEP):
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{
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/* Entering SLEEP mode - Logic for PM_SLEEP goes here */
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}
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break;
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default:
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{
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/* Should not get here */
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}
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break;
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}
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}
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#endif
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/****************************************************************************
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* Name: led_pm_prepare
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*
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* Description:
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* Request the driver to prepare for a new power state. This is a warning
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* that the system is about to enter into a new power state. The driver
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* should begin whatever operations that may be required to enter power
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* state. The driver may abort the state change mode by returning a
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* non-zero value from the callback function.
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*
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****************************************************************************/
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#ifdef CONFIG_PM
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static int led_pm_prepare(struct pm_callback_s *cb , enum pm_state_e pmstate)
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{
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/* No preparation to change power modes is required by the LEDs driver.
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* We always accept the state change by returning OK.
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*/
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return OK;
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}
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#endif
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2012-01-11 14:01:26 +01:00
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: stm32_ledinit
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****************************************************************************/
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void stm32_ledinit(void)
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{
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/* Configure LED1-4 GPIOs for output */
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stm32_configgpio(GPIO_LED1);
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stm32_configgpio(GPIO_LED2);
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stm32_configgpio(GPIO_LED3);
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stm32_configgpio(GPIO_LED4);
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}
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/****************************************************************************
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* Name: stm32_setled
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****************************************************************************/
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void stm32_setled(int led, bool ledon)
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{
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if ((unsigned)led < BOARD_NLEDS)
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{
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stm32_gpiowrite(g_ledcfg[led], ledon);
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}
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}
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/****************************************************************************
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* Name: stm32_setleds
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****************************************************************************/
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void stm32_setleds(uint8_t ledset)
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{
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stm32_gpiowrite(BOARD_LED1, (ledset & BOARD_LED1_BIT) == 0);
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stm32_gpiowrite(BOARD_LED2, (ledset & BOARD_LED2_BIT) == 0);
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stm32_gpiowrite(BOARD_LED3, (ledset & BOARD_LED3_BIT) == 0);
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stm32_gpiowrite(BOARD_LED4, (ledset & BOARD_LED4_BIT) == 0);
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}
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2012-07-25 15:35:36 +02:00
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/****************************************************************************
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* Name: up_ledpminitialize
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****************************************************************************/
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#ifdef CONFIG_PM
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void up_ledpminitialize(void)
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{
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/* Register to receive power management callbacks */
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int ret = pm_register(&g_ledscb);
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if (ret != OK)
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{
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up_ledon(LED_ASSERTION);
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}
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}
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#endif /* CONFIG_PM */
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2012-01-11 14:01:26 +01:00
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#endif /* !CONFIG_ARCH_LEDS */
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