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https://github.com/apache/nuttx.git
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ADC bugfixes plus new DAC logic from Lzyy
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@3913 42af7a65-404d-4744-a932-0658087f49c3
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patacongo
@@ -4,6 +4,7 @@
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* Copyright (C) 2011 Li Zhuoyi. All rights reserved.
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* Author: Li Zhuoyi <lzyy.cn@gmail.com>
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* History: 0.1 2011-08-04 initial version
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* 0.2 remove ao_read
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*
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* Derived from include/nuttx/can.h
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* Copyright (C) 2008, 2009 Gregory Nutt. All rights reserved.
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@@ -120,8 +121,6 @@ struct adc_ops_s
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CODE void (*ao_rxint)(FAR struct adc_dev_s *dev, bool enable);
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CODE int (*ao_read)(FAR struct adc_dev_s *dev, char *buffer,int len);
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/* All ioctl calls will be routed through this method */
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CODE int (*ao_ioctl)(FAR struct adc_dev_s *dev, int cmd, unsigned long arg);
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@@ -182,6 +181,15 @@ int adc_receive(FAR struct adc_dev_s *dev, uint8_t ch, int32_t data);
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FAR struct adc_dev_s *up_ads1255initialize(FAR struct spi_dev_s *spi, unsigned int devno);
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/************************************************************************************
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* Name: up_adcinitialize
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*
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* Description:
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* Initialize the MCU internal adc driver
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*
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************************************************************************************/
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FAR struct adc_dev_s *up_adcinitialize();
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#if defined(__cplusplus)
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}
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#endif
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@@ -0,0 +1,189 @@
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/************************************************************************************
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* include/nuttx/analog/dac.h
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*
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* Copyright (C) 2011 Li Zhuoyi. All rights reserved.
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* Author: Li Zhuoyi <lzyy.cn@gmail.com>
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* History: 0.1 2011-08-04 initial version
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*
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* Derived from include/nuttx/can.h
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* Copyright (C) 2008, 2009 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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************************************************************************************/
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#ifndef __NUTTX_DAC_H
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#define __NUTTX_DAC_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 <sys/types.h>
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#include <stdint.h>
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#include <stdbool.h>
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#include <semaphore.h>
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#include <nuttx/fs.h>
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#include <nuttx/spi.h>
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/************************************************************************************
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* Pre-processor Definitions
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************************************************************************************/
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/* Default configuration settings that may be overridden in the board configuration.
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* file. The configured size is limited to 255 to fit into a uint8_t.
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*/
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#if !defined(CONFIG_DAC_FIFOSIZE)
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# define CONFIG_DAC_FIFOSIZE 8
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#elif CONFIG_DAC_FIFOSIZE > 255
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# undef CONFIG_DAC_FIFOSIZE
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# define CONFIG_DAC_FIFOSIZE 255
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#endif
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/************************************************************************************
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* Public Types
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************************************************************************************/
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struct dac_msg_s
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{
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uint8_t am_channel; /* The 8-bit DAC Channel */
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int32_t am_data; /* DAC convert result (4 bytes) */
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};
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struct dac_fifo_s
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{
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sem_t af_sem; /* Counting semaphore */
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uint8_t af_head; /* Index to the head [IN] index in the circular buffer */
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uint8_t af_tail; /* Index to the tail [OUT] index in the circular buffer */
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/* Circular buffer of CAN messages */
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struct dac_msg_s af_buffer[CONFIG_DAC_FIFOSIZE];
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};
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/* This structure defines all of the operations providd by the architecture specific
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* logic. All fields must be provided with non-NULL function pointers by the
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* caller of dac_register().
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*/
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struct dac_dev_s;
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struct dac_ops_s
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{
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/* Reset the DAC device. Called early to initialize the hardware. This
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* is called, before ao_setup() and on error conditions.
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*/
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CODE void (*ao_reset)(FAR struct dac_dev_s *dev);
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/* Configure the DAC. This method is called the first time that the DAC
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* device is opened. This will occur when the port is first opened.
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* This setup includes configuring and attaching DAC interrupts. Interrupts
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* are all disabled upon return.
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*/
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CODE int (*ao_setup)(FAR struct dac_dev_s *dev);
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/* Disable the DAC. This method is called when the DAC device is closed.
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* This method reverses the operation the setup method.
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*/
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CODE void (*ao_shutdown)(FAR struct dac_dev_s *dev);
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/* Call to enable or disable TX interrupts */
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CODE void (*ao_txint)(FAR struct dac_dev_s *dev, bool enable);
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/* This method will send one message on the DAC */
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CODE int (*ao_send)(FAR struct dac_dev_s *dev, FAR struct dac_msg_s *msg);
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/* All ioctl calls will be routed through this method */
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CODE int (*ao_ioctl)(FAR struct dac_dev_s *dev, int cmd, unsigned long arg);
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};
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/* This is the device structure used by the driver. The caller of
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* dac_register() must allocate and initialize this structure. The
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* calling logic need only set all fields to zero except:
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*
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* The elements of 'ad_ops', and 'ad_priv'
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*
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* The common logic will initialize all semaphores.
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*/
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struct dac_dev_s
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{
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uint8_t ad_ocount; /* The number of times the device has been opened */
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uint8_t ad_nchannel; /* Number of dac channel */
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sem_t ad_closesem; /* Locks out new opens while close is in progress */
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struct dac_fifo_s ad_xmit; /* Describes receive FIFO */
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const struct dac_ops_s *ad_ops; /* Arch-specific operations */
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void *ad_priv; /* Used by the arch-specific logic */
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};
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/************************************************************************************
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* Public Data
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************************************************************************************/
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/************************************************************************************
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* Public Functions
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************************************************************************************/
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#if defined(__cplusplus)
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extern "C" {
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#endif
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/************************************************************************************
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* Name: dac_register
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*
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* Description:
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* Register a dac driver.
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*
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************************************************************************************/
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int dac_register(FAR const char *path, FAR struct dac_dev_s *dev);
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/************************************************************************************
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* Name: dac_txdone
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*
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* Description:
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* Called from the DAC interrupt handler at the completion of a send operation.
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*
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* Return:
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* OK on success; a negated errno on failure.
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*
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************************************************************************************/
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int dac_txdone(FAR struct dac_dev_s *dev);
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FAR struct dac_dev_s *up_ad5410initialize(FAR struct spi_dev_s *spi, unsigned int devno);
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FAR struct dac_dev_s *up_dacinitialize();
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#if defined(__cplusplus)
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}
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#endif
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#endif /* __NUTTX_DAC_H */
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