109 lines
3.6 KiB
C
109 lines
3.6 KiB
C
/****************************************************************************
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* boards/arm/stm32/common/src/stm32_apa102.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 <errno.h>
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#include <debug.h>
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#include <stdio.h>
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#include <nuttx/spi/spi.h>
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#include <nuttx/leds/apa102.h>
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#include "stm32.h"
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#include "stm32_spi.h"
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#ifdef CONFIG_LEDS_APA102
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/****************************************************************************
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* Private Types
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****************************************************************************/
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/****************************************************************************
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* Private Function Prototypes
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****************************************************************************/
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/****************************************************************************
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* Private Data
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****************************************************************************/
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/****************************************************************************
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* Public Data
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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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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: board_apa102_initialize
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*
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* Description:
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* Initialize and register the APA102 LED Strip driver.
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*
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* Input Parameters:
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* devno - The device number, used to build the device path as /dev/leddrvN
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* spino - SPI port number
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*
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* Returned Value:
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* Zero (OK) on success; a negated errno value on failure.
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*
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****************************************************************************/
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int board_apa102_initialize(int devno, int spino)
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{
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struct spi_dev_s *spi;
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char devpath[13];
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int ret;
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spi = stm32_spibus_initialize(spino);
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if (spi == NULL)
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{
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return -ENODEV;
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}
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/* Register the APA102 Driver at the specified location. */
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snprintf(devpath, 13, "/dev/leddrv%d", devno);
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ret = apa102_register(devpath, spi);
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if (ret < 0)
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{
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lederr("ERROR: apa102_register(%s) failed: %d\n",
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devpath, ret);
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return ret;
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}
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return OK;
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}
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#endif
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