c7c78972d6
This commit adds support for GPIO driver based encoder for SAMv7 boards. This encoder do not use the microcontroller's dedicated driver but two GPIO pins with interrupts. The position is calculated based on those interrupts. This can be used for boards that do not have pins routed to the dedicated driver. Signed-off-by: Michal Lenc <michallenc@seznam.cz>
72 lines
2.5 KiB
C
72 lines
2.5 KiB
C
/****************************************************************************
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* boards/arm/samv7/common/include/board_gpio_enc.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 __BOARDS_ARM_SAMV7_COMMON_INCLUDE_BOARD_GPIO_ENC_H
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#define __BOARDS_ARM_SAMV7_COMMON_INCLUDE_BOARD_GPIO_ENC_H
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include "sam_gpio.h"
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/****************************************************************************
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* Public Types
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****************************************************************************/
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/****************************************************************************
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* Public Data
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****************************************************************************/
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#ifndef __ASSEMBLY__
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#undef EXTERN
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#if defined(__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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* Public Functions Definitions
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****************************************************************************/
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/****************************************************************************
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* Name: sam_gpio_enc_init
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*
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* Description:
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* Initialize and register the ENC driver.
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*
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* Input Parameters:
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* enca_cfg - ENC_A pin
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* encb_cfg - ENC_B pin
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* enca_irq - ENC_A interrupt
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* encb_irq - ENC_B interrupt
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*
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****************************************************************************/
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int sam_gpio_enc_init(gpio_pinset_t enca_cfg, gpio_pinset_t encb_cfg,
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int enca_irq, int encb_irq);
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#endif /* __ASSEMBLY__ */
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#endif /* __BOARDS_ARM_SAMV7_COMMON_INCLUDE_BOARD_GPIO_ENC_H */
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