de47c8f52f
arm: codestyle fixes 3
* arm: lpc214x: codestyle fixes
After the board restructuration is time for codestyle cleanup
Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>
* arm: lpc2378: codestyle fixes
After the board restructuration is time for codestyle cleanup
Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>
* arm: lpc31xx: codestyle fixes
After the board restructuration is time for codestyle cleanup
Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>
* arm: lpc54xx: codestyle fixes
After the board restructuration is time for codestyle cleanup
Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>
* arm: lpc43xx: codestyle fixes
After the board restructuration is time for codestyle cleanup
Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>
Approved-by: Gregory Nutt <gnutt@nuttx.org>
108 lines
3.6 KiB
C
108 lines
3.6 KiB
C
/****************************************************************************
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* boards/arm/lpc54xx/lpcxpresso-lpc54628/src/lpc54_i2c.c
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*
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* Copyright (C) 2017 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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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 <syslog.h>
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#include <nuttx/i2c/i2c_master.h>
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#include "lpc54_config.h"
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#include "lpc54_i2c_master.h"
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#include "lpcxpresso-lpc54628.h"
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#if defined(HAVE_I2CTOOL) || defined(HAVE_FT5x06)
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/****************************************************************************
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* Private Data
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****************************************************************************/
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static FAR struct i2c_master_s *g_i2c_handle[NI2C];
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: lpc54_i2c_handle
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*
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* Description:
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* Create (or reuse) an I2C handle
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*
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****************************************************************************/
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FAR struct i2c_master_s *lpc54_i2c_handle(int bus, int ndx)
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{
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FAR struct i2c_master_s *i2c = g_i2c_handle[ndx];
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if (i2c == NULL)
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{
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i2c = lpc54_i2cbus_initialize(bus);
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if (i2c == NULL)
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{
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syslog(LOG_ERR, "ERROR: Failed to get I2C%d interface\n", bus);
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}
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else
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{
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g_i2c_handle[ndx] = i2c;
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}
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}
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return i2c;
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}
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/****************************************************************************
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* Name: lpc54_i2c_free
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*
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* Description:
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* Free an I2C handle created by lpc54_i2c_handle
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*
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****************************************************************************/
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void lpc54_i2c_free(int ndx)
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{
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if (g_i2c_handle[ndx] != NULL)
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{
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lpc54_i2cbus_uninitialize(g_i2c_handle[ndx]);
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g_i2c_handle[ndx] = NULL;
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}
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}
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#endif /* HAVE_I2CTOOL || HAVE_FT5x06*/
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