762ae456b3
Gregory Nutt is has submitted the SGA Michal Lyszczek has submitted the ICLA as a result we can migrate the licenses to Apache. Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>
77 lines
2.3 KiB
C
77 lines
2.3 KiB
C
/****************************************************************************
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* boards/arm/stm32/stm32butterfly2/src/stm32_adc.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 <debug.h>
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#include <errno.h>
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#include "chip.h"
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#include "stm32_adc.h"
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: stm32_adc_setup
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*
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* Description:
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* Initialize ADC and register the ADC driver.
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*
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****************************************************************************/
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int stm32_adc_setup(void)
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{
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static bool initialized = false;
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uint8_t channel[1] =
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{
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10
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};
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struct adc_dev_s *adc;
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int rv;
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if (initialized)
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{
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return OK;
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}
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ainfo("INFO: Initializing ADC12_IN10\n");
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stm32_configgpio(GPIO_ADC12_IN10);
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if ((adc = stm32_adcinitialize(1, channel, 1)) == NULL)
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{
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aerr("ERROR: Failed to get adc interface\n");
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return -ENODEV;
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}
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if ((rv = adc_register("/dev/adc0", adc)) < 0)
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{
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aerr("ERROR: adc_register failed: %d\n", rv);
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return rv;
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}
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initialized = true;
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ainfo("INFO: ADC12_IN10 initialized successfully\n");
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return OK;
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}
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