106 lines
3.0 KiB
C
106 lines
3.0 KiB
C
/****************************************************************************
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* boards/arm/kinetis/freedom-k28f/src/k28_i2c.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 <stdint.h>
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#include <stdbool.h>
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#include <debug.h>
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#include <nuttx/i2c/i2c_master.h>
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#include "arm_arch.h"
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#include "chip.h"
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#include "kinetis.h"
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#include "kinetis_i2c.h"
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#include "freedom-k28f.h"
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#include <arch/board/board.h>
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#if defined(CONFIG_KINETIS_I2C0) || defined(CONFIG_KINETIS_I2C1)
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/****************************************************************************
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* Public Data
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****************************************************************************/
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#ifdef CONFIG_KINETIS_I2C0
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FAR struct i2c_master_s *g_i2c0_dev;
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#endif
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#ifdef CONFIG_KINETIS_I2C1
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FAR struct i2c_master_s *g_i2c1_dev;
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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: k28_i2cdev_initialize
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*
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* Description:
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* Called to configure I2C
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*
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****************************************************************************/
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void k28_i2cdev_initialize(void)
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{
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int ret = OK;
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#ifdef CONFIG_KINETIS_I2C0
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g_i2c0_dev = kinetis_i2cbus_initialize(0);
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if (g_i2c0_dev == NULL)
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{
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syslog(LOG_ERR, "ERROR: kinetis_i2cbus_initialize(0) failed: %d\n",
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ret);
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ret = -ENODEV;
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}
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else
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{
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#ifdef CONFIG_I2C_DRIVER
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ret = i2c_register(g_i2c0_dev, 0);
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#endif
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}
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#endif
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#ifdef CONFIG_KINETIS_I2C1
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g_i2c1_dev = kinetis_i2cbus_initialize(1);
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if (g_i2c1_dev == NULL)
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{
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syslog(LOG_ERR, "ERROR: kinetis_i2cbus_initialize(1) failed: %d\n",
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ret);
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ret = -ENODEV;
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}
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else
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{
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#ifdef CONFIG_I2C_DRIVER
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ret = i2c_register(g_i2c1_dev, 1);
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#endif
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}
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#endif
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return ret;
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}
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#endif /* CONFIG_KINETIS_I2C0 || CONFIG_KINETIS_I2C1 */
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