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/****************************************************************************
* config/mirtoo/src/up_adc.c
* arch/arm/src/board/up_adc.c
*
* 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.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <stdbool.h>
#include <errno.h>
#include <debug.h>
#include "pic32mx-internal.h"
#include "mirtoo-internal.h"
#ifdef CONFIG_PIC32MX_ADC
/****************************************************************************
* Pre-Processor Definitions
****************************************************************************/
/* Configuration ************************************************************/
/* The Mirtoo features a PGA117 amplifier/multipexer that can be configured to
* bring any analog signal from PORT0,.. PORT7 to pin 19 of the PIC32MX:
*
* --- ------------------------------------------------ ----------------------------
* PIN PIC32 SIGNAL(s) BOARD SIGNAL/USAGE
* --- ------------------------------------------------ ----------------------------
* 19 PGED3/VREF+/CVREF+/AN0/C3INC/RPA0/CTED1/PMD7/RA0 AIN PGA117 Vout
--- ------------------------------------------------ ----------------------------
*
* The PGA117 driver can be enabled by setting the following the nsh
* configuration:
*
* CONFIG_ADC=y : Enable support for analog input devices
* CONFIG_PIC32MX_ADC=y : Enable support the PIC32 ADC driver
* CONFIG_SPI_OWNBUS=n : The PGA117 is *not* the only device on the bus
* CONFIG_ADC_PGA11X=y : Enable support for the PGA117
*
* When CONFIG_PIC32MX_ADC=y is defined, the Mirtoo boot up logic will automatically
* configure pin 18 (AN0) as an analog input.
*/
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: pic32mx_adcinitialize
*
* Description:
* Perform architecture specific ADC initialization
*
****************************************************************************/
#if 0 /* Not used */
int pic32mx_adcinitialize(void)
{
/* Configure the pin 19 as an analog input */
#warning "Missing logic"
/* Initialize the PGA117 amplifier multiplexer */
#warning "Missing logic"
/* Register the ADC device driver */
#warning "Missing logic"
return OK;
}
#endif
#endif /* CONFIG_PIC32MX_ADC */
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