nuttx/boards/arm/stm32l4/nucleo-l476rg/src/stm32_userleds.c
Alin Jerpelea 1ad3a22ad5 board: stm32: Author Gregory Nutt: update licenses to Apache
Gregory Nutt has submitted the SGA and we can migrate the licenses
 to Apache.

Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>
2021-03-20 19:22:58 -07:00

196 lines
5.8 KiB
C

/****************************************************************************
* boards/arm/stm32l4/nucleo-l476rg/src/stm32_userleds.c
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <stdint.h>
#include <stdbool.h>
#include <debug.h>
#include <arch/board/board.h>
#include <nuttx/power/pm.h>
#include "chip.h"
#include "arm_arch.h"
#include "arm_internal.h"
#include "stm32l4.h"
#include "nucleo-l476rg.h"
#ifndef CONFIG_ARCH_LEDS
/****************************************************************************
* Private Function Prototypes
****************************************************************************/
/* LED Power Management */
#ifdef CONFIG_PM
static void led_pm_notify(struct pm_callback_s *cb, int domain,
enum pm_state_e pmstate);
static int led_pm_prepare(struct pm_callback_s *cb, int domain,
enum pm_state_e pmstate);
#endif
/****************************************************************************
* Private Data
****************************************************************************/
#ifdef CONFIG_PM
static struct pm_callback_s g_ledscb =
{
.notify = led_pm_notify,
.prepare = led_pm_prepare,
};
#endif
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Name: led_pm_notify
*
* Description:
* Notify the driver of new power state. This callback is called after
* all drivers have had the opportunity to prepare for the new power state.
*
****************************************************************************/
#ifdef CONFIG_PM
static void led_pm_notify(struct pm_callback_s *cb, int domain,
enum pm_state_e pmstate)
{
switch (pmstate)
{
case(PM_NORMAL):
{
/* Restore normal LEDs operation */
}
break;
case(PM_IDLE):
{
/* Entering IDLE mode - Turn leds off */
}
break;
case(PM_STANDBY):
{
/* Entering STANDBY mode - Logic for PM_STANDBY goes here */
}
break;
case(PM_SLEEP):
{
/* Entering SLEEP mode - Logic for PM_SLEEP goes here */
}
break;
default:
{
/* Should not get here */
}
break;
}
}
#endif
/****************************************************************************
* Name: led_pm_prepare
*
* Description:
* Request the driver to prepare for a new power state. This is a warning
* that the system is about to enter into a new power state. The driver
* should begin whatever operations that may be required to enter power
* state. The driver may abort the state change mode by returning a
* non-zero value from the callback function.
*
****************************************************************************/
#ifdef CONFIG_PM
static int led_pm_prepare(struct pm_callback_s *cb, int domain,
enum pm_state_e pmstate)
{
/* No preparation to change power modes is required by the LEDs driver.
* We always accept the state change by returning OK.
*/
return OK;
}
#endif
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: board_userled_initialize
****************************************************************************/
uint32_t board_userled_initialize(void)
{
/* Configure LD2 GPIO for output */
stm32l4_configgpio(GPIO_LD2);
return BOARD_NLEDS;
}
/****************************************************************************
* Name: board_userled
****************************************************************************/
void board_userled(int led, bool ledon)
{
if (led == BOARD_LD2)
{
stm32l4_gpiowrite(GPIO_LD2, ledon);
}
}
/****************************************************************************
* Name: board_userled_all
****************************************************************************/
void board_userled_all(uint32_t ledset)
{
stm32l4_gpiowrite(GPIO_LD2, (ledset & BOARD_LD2_BIT) != 0);
}
/****************************************************************************
* Name: stm32l4_led_pminitialize
****************************************************************************/
#ifdef CONFIG_PM
void stm32l4_led_pminitialize(void)
{
/* Register to receive power management callbacks */
int ret = pm_register(&g_ledscb);
DEBUGASSERT(ret == OK);
UNUSED(ret);
}
#endif /* CONFIG_PM */
#endif /* !CONFIG_ARCH_LEDS */