111 lines
3.1 KiB
C
111 lines
3.1 KiB
C
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/****************************************************************************
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* boards/arm/stm32/nucleo-f446re/src/stm32_dac.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 <nuttx/analog/dac.h>
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#include <arch/board/board.h>
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#include "stm32_dac.h"
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#include "nucleo-f446re.h"
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#ifdef CONFIG_DAC
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/****************************************************************************
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* Private Data
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****************************************************************************/
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#ifdef CONFIG_STM32_DAC1CH1
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static struct dac_dev_s *g_dac1;
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#endif
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#ifdef CONFIG_STM32_DAC1CH2
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static struct dac_dev_s *g_dac2;
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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: stm32_dac_setup
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*
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* Description:
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* Initialize and register the DAC driver.
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*
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* Input parameters:
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* devpath - The full path to the driver to register. E.g., "/dev/dac0"
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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 stm32_dac_setup(void)
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{
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int ret;
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#ifdef CONFIG_STM32_DAC1CH1
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g_dac1 = stm32_dacinitialize(1);
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if (g_dac1 == NULL)
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{
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aerr("ERROR: Failed to get DAC interface\n");
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return -ENODEV;
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}
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/* Register the DAC driver at "/dev/dac0" */
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ret = dac_register("/dev/dac0", g_dac1);
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if (ret < 0)
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{
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aerr("ERROR: dac_register() failed: %d\n", ret);
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return ret;
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}
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#endif
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#ifdef CONFIG_STM32_DAC1CH2
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g_dac2 = stm32_dacinitialize(2);
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if (g_dac2 == NULL)
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{
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aerr("ERROR: Failed to get DAC interface\n");
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return -ENODEV;
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}
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/* Register the DAC driver at "/dev/dac1" */
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ret = dac_register("/dev/dac1", g_dac2);
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if (ret < 0)
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{
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aerr("ERROR: dac_register() failed: %d\n", ret);
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return ret;
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}
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#endif
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UNUSED(ret);
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return OK;
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}
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#endif /* CONFIG_DAC */
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