153 lines
5.0 KiB
C
153 lines
5.0 KiB
C
/****************************************************************************
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* drivers/leds/userled_lower.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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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 <assert.h>
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#include <debug.h>
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#include <inttypes.h>
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#include <nuttx/board.h>
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#include <nuttx/leds/userled.h>
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#if CONFIG_USERLED_LOWER
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/****************************************************************************
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* Private Function Prototypes
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****************************************************************************/
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static userled_set_t
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userled_supported(FAR const struct userled_lowerhalf_s *lower);
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static void userled_setled(FAR const struct userled_lowerhalf_s *lower,
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int led, bool ledon);
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static void userled_setall(FAR const struct userled_lowerhalf_s *lower,
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userled_set_t ledset);
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#ifdef CONFIG_USERLED_LOWER_READSTATE
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static void userled_getall(FAR const struct userled_lowerhalf_s *lower,
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userled_set_t *ledset);
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#endif
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/****************************************************************************
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* Private Data
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****************************************************************************/
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static uint32_t g_lednum;
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/* This is the user LED lower half driver interface */
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static const struct userled_lowerhalf_s g_userled_lower =
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{
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userled_supported, /* ll_supported */
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userled_setled, /* ll_setled */
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userled_setall /* ll_setall */
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#ifdef CONFIG_USERLED_LOWER_READSTATE
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, userled_getall /* ll_getall */
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#endif
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};
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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/****************************************************************************
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* Name: userled_supported
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*
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* Description:
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* Return the set of LEDs supported by the board
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*
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****************************************************************************/
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static userled_set_t
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userled_supported(FAR const struct userled_lowerhalf_s *lower)
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{
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ledinfo("BOARD_NLEDS: %02" PRIx32 "\n", g_lednum);
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return (userled_set_t)((1 << g_lednum) - 1);
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}
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/****************************************************************************
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* Name: userled_setled
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*
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* Description:
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* Set the current state of one LED
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*
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****************************************************************************/
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static void userled_setled(FAR const struct userled_lowerhalf_s *lower,
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int led, bool ledon)
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{
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board_userled(led, ledon);
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}
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/****************************************************************************
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* Name: userled_setall
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*
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* Description:
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* Set the state of all LEDs
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*
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****************************************************************************/
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static void userled_setall(FAR const struct userled_lowerhalf_s *lower,
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userled_set_t ledset)
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{
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board_userled_all(ledset);
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}
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#ifdef CONFIG_USERLED_LOWER_READSTATE
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/****************************************************************************
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* Name: userled_getall
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*
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* Description:
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* Get the state of all LEDs
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*
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****************************************************************************/
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static void userled_getall(FAR const struct userled_lowerhalf_s *lower,
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userled_set_t *ledset)
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{
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board_userled_getall(ledset);
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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: userled_lower_initialize
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*
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* Description:
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* Initialize the generic LED lower half driver, bind it and register
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* it with the upper half LED driver as devname.
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*
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****************************************************************************/
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int userled_lower_initialize(FAR const char *devname)
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{
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g_lednum = board_userled_initialize();
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return userled_register(devname, &g_userled_lower);
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}
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#endif /* CONFIG_USERLED_LOWER */
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