85 lines
3.0 KiB
C
85 lines
3.0 KiB
C
/****************************************************************************
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* boards/arm/stm32/common/include/stm32_tone.h
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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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#ifndef __STM32_TONE_H
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#define __STM32_TONE_H
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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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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/****************************************************************************
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* Public Types
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****************************************************************************/
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struct board_tone_config_s
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{
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int pwm_timer; /* PWM timer number for tone generation */
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int oneshot_timer; /* Oneshot timer for note intervals */
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int oneshot_timer_resolution; /* Oneshot timer resolution in us */
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};
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/****************************************************************************
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* Public Data
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****************************************************************************/
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#ifdef __cplusplus
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#define EXTERN extern "C"
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extern "C"
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{
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#else
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#define EXTERN extern
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#endif
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/****************************************************************************
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* Inline Functions
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****************************************************************************/
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/****************************************************************************
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* Public Function Prototypes
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****************************************************************************/
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/****************************************************************************
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* Name: board_tone_initialize
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*
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* Input Parameters:
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* cfg - Configuration for the driver
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* devno - The device number, used to build the device path as /dev/toneN
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*
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* Description:
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* Configure and initialize the tone generator.
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*
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****************************************************************************/
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int board_tone_initialize(FAR struct board_tone_config_s *cfg, int devno);
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#undef EXTERN
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#ifdef __cplusplus
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}
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#endif
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#endif // __STM32_TONE_H
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