125 lines
4.9 KiB
C
125 lines
4.9 KiB
C
/****************************************************************************
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* include/nuttx/analog/ioctl.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 __INCLUDE_NUTTX_ANALOG_IOCTL_H
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#define __INCLUDE_NUTTX_ANALOG_IOCTL_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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#include <nuttx/fs/ioctl.h>
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/* The analog driver sub-system uses the standard character driver framework.
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* However, since the driver is a devices control interface rather than a
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* data transfer interface, the majority of the functionality is implemented
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* in driver ioctl calls. Standard ioctl commands are listed below:
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*/
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/* DAC/ADC */
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#define ANIOC_TRIGGER _ANIOC(0x0001) /* Trigger one conversion
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* IN: None
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* OUT: None */
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#define ANIOC_WDOG_UPPER _ANIOC(0x0002) /* Set upper threshold for
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* watchdog
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* IN: Threshold value
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* OUT: None */
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#define ANIOC_WDOG_LOWER _ANIOC(0x0003) /* Set lower threshold for
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* watchdog
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* IN: Threshold value
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* OUT: None */
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#define ANIOC_GET_NCHANNELS _ANIOC(0x0004) /* Get the number of
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* configured channels
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* IN: None
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* OUT: Number of channels */
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#define ANIOC_RESET_FIFO _ANIOC(0x0005) /* Clear data receive FIFO
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* IN: None
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* OUT: None */
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#define ANIOC_SAMPLES_ON_READ _ANIOC(0x0006) /* Get the number of
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* samples to be read
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* IN: None
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* OUT: Number of samples
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* waiting to be read */
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#define AN_FIRST 0x0001 /* First common command */
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#define AN_NCMDS 6 /* Number of common commands */
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/* User defined ioctl commands are also supported. These will be forwarded
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* by the upper-half driver to the lower-half driver via the ioctl()
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* method of the lower-half interface. However, the lower-half driver
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* must reserve a block of commands as follows in order prevent IOCTL
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* command numbers from overlapping.
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*/
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/* See include/nuttx/analog/ads1242.h */
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#define AN_ADS2142_FIRST (AN_FIRST + AN_NCMDS)
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#define AN_ADS2142_NCMDS 6
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/* See include/nuttx/analog/lm92001.h */
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#define AN_LMP92001_FIRST (AN_ADS2142_FIRST + AN_ADS2142_NCMDS)
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#define AN_LMP92001_NCMDS 7
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/* See include/nuttx/analog/ads7828.h */
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#define AN_ADS7828_FIRST (AN_LMP92001_FIRST + AN_LMP92001_NCMDS)
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#define AN_ADS7828_NCMDS 6
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/* See arch/arm/src/stm32l4/stm32l4_adc.h */
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#define AN_STM32L4_FIRST (AN_ADS7828_FIRST + AN_ADS7828_NCMDS)
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#define AN_STM32L4_NCMDS 2
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/* See include/nuttx/analog/max1161x.h */
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#define AN_MAX1161X_FIRST (AN_STM32L4_FIRST + AN_STM32L4_NCMDS)
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#define AN_MAX1161X_NCMDS 8
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/* See include/nuttx/analog/mcp48xx.h */
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#define AN_MCP48XX_FIRST (AN_MAX1161X_FIRST + AN_MAX1161X_NCMDS)
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#define AN_MCP48XX_NCMDS 3
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/****************************************************************************
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* Public Function Prototypes
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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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#undef EXTERN
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#ifdef __cplusplus
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}
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#endif
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#endif /* __INCLUDE_NUTTX_ANALOG_IOCTL_H */
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