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/************************************************************************************
* configs/zkit-arm-1769/src/up_dac.c
* arch/arm/src/board/up_dac.c
*
* Copyright (C) 2013 Zilogic Systems. All rights reserved.
* Author: Kannan <code@nuttx.org>
*
* Based on configs/stm3220g-eval/src/up_dac.c
*
* Copyright (C) 2012 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************************************/
/************************************************************************************
* Included Files
************************************************************************************/
#include <nuttx/config.h>
#include <errno.h>
#include <debug.h>
#include <nuttx/analog/dac.h>
#include <arch/board/board.h>
#include "up_arch.h"
#include "up_internal.h"
#include "zkitarm_internal.h"
#include "lpc17_dac.h"
#ifdef CONFIG_DAC
/************************************************************************************
* Name: dac_devinit
*
* Description:
* All LPC17xx architectures must provide the following interface to work with
* examples/diag.
*
************************************************************************************/
int dac_devinit(void)
{
static bool initialized = false;
struct dac_dev_s *dac;
int ret;
if (!initialized)
{
/* Call lpc17_dacinitialize() to get an instance of the dac interface */
dac = lpc17_dacinitialize();
if (dac == NULL)
{
adbg("ERROR: Failed to get dac interface\n");
return -ENODEV;
}
ret = dac_register("/dev/dac0", dac);
if (ret < 0)
{
adbg("dac_register failed: %d\n", ret);
return ret;
}
initialized = true;
}
return OK;
}
#endif /* CONFIG_DAC */
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