diff options
author | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2012-02-14 15:32:57 +0000 |
---|---|---|
committer | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2012-02-14 15:32:57 +0000 |
commit | eb27d3ee72eef6f00fc98e9896014d8c785f8c0d (patch) | |
tree | edf22faa8e6f3919fe00791bec725da56a9c88b4 /nuttx/arch/arm/src/stm32/stm32_qencoder.h | |
parent | b6d309b44ee7847c102b9d2fd7582cf0cedd0631 (diff) | |
download | px4-nuttx-eb27d3ee72eef6f00fc98e9896014d8c785f8c0d.tar.gz px4-nuttx-eb27d3ee72eef6f00fc98e9896014d8c785f8c0d.tar.bz2 px4-nuttx-eb27d3ee72eef6f00fc98e9896014d8c785f8c0d.zip |
Add an infrastructure to support a generic quadrature encoder driver
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@4390 42af7a65-404d-4744-a932-0658087f49c3
Diffstat (limited to 'nuttx/arch/arm/src/stm32/stm32_qencoder.h')
-rw-r--r-- | nuttx/arch/arm/src/stm32/stm32_qencoder.h | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/nuttx/arch/arm/src/stm32/stm32_qencoder.h b/nuttx/arch/arm/src/stm32/stm32_qencoder.h new file mode 100644 index 000000000..5c977caad --- /dev/null +++ b/nuttx/arch/arm/src/stm32/stm32_qencoder.h @@ -0,0 +1,72 @@ +/************************************************************************************ + * arch/arm/src/stm32/stm32_qencoder.h + * + * 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. + * + ************************************************************************************/ + +#ifndef __ARCH_ARM_SRC_STM32_STM32_QENCODER_H +#define __ARCH_ARM_SRC_STM32_STM32_QENCODER_H + +/************************************************************************************ + * Included Files + ************************************************************************************/ + +#include <nuttx/config.h> + +#include "chip.h" + +#ifdef CONFIG_QENCODER + +/************************************************************************************ + * Included Files + ************************************************************************************/ + +/************************************************************************************ + * Name: stm32_qeinitialize + * + * Description: + * Initialize a quadrature encoder interface. This function must be called from + * board-specific logic after input pins have been configured. + * + * Input Parameters: + * devpath - The full path to the driver to register. E.g., "/dev/qe0" + * + * Returned Values: + * Zero on success; A negated errno value is returned on failure. + * + ************************************************************************************/ + +int stm32_qeinitialize(FAR const char *devpath); + +#endif /* CONFIG_QENCODER */ +#endif /* __ARCH_ARM_SRC_STM32_STM32_QENCODER_H */ + |