forked from xuos/xiuos
99 lines
2.9 KiB
C
99 lines
2.9 KiB
C
/****************************************************************************
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* boards/arm/stm32/aiit-arm32-board/src/stm32_pca9635.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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* @file stm32_pca9635.c
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* @brief nuttx source code
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* https://github.com/apache/incubator-nuttx.git
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* @version 10.2.0
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* @author AIIT XUOS Lab
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* @date 2022-03-17
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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 <stdbool.h>
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#include <stdio.h>
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#include <debug.h>
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#include <errno.h>
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#include <nuttx/i2c/i2c_master.h>
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#include <nuttx/leds/pca9635pw.h>
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#include <arch/irq.h>
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#include "stm32_gpio.h"
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#include "stm32_i2c.h"
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#include "aiit-arm32-board.h"
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#ifdef CONFIG_PCA9635PW
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: stm32_pca9635_initialize
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*
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* Description:
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* This function is called by board initialization logic to configure the
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* LED PWM chip. This function will register the driver as /dev/leddrv0.
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*
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* Input Parameters:
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* None
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*
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* Returned Value:
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* Zero is returned on success. Otherwise, a negated errno value is
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* returned to indicate the nature of the failure.
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*
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****************************************************************************/
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int stm32_pca9635_initialize(void)
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{
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FAR struct i2c_master_s *i2c;
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int ret;
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/* Get the I2C driver that interfaces with the pca9635
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* (PCA9635_I2CBUS)
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*/
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i2c = stm32_i2cbus_initialize(PCA9635_I2CBUS);
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if (!i2c)
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{
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_err("ERROR: Failed to initialize I2C%d\n", PCA9635_I2CBUS);
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return -1;
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}
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ret = pca9635pw_register("/dev/leddrv0", i2c, PCA9635_I2CADDR);
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if (ret < 0)
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{
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snerr("ERROR: Failed to register PCA9635 driver: %d\n", 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 /* CONFIG_PCA9635PW */
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