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MPAE-11969: Added initial example
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‎.main-meta/main.json

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"content": {
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"metaDataVersion": "1.1.0",
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"name": "com.microchip.mcu8.mplabx.project.avr128db48-timer-triggered-adc-sampling-mplab-mcc",
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"version": "",
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"displayName": "",
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"version": "1.0.0",
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"displayName": "Timer Triggered ADC Sampling",
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"projectName": "avr128db48-timer-triggered-adc-sampling-mplab-mcc",
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"shortDescription": "",
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"shortDescription": "This example shows how to configure the Analog-to-Digital Converter (ADC) to trigger a conversion on a specific event. The Timer/Counter type A (TCA) overflow is used to trigger the ADC sample accumulation and ADC result is transmitted through USART",
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"ide": {
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"name": "MPLAB X",
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"semverRange": ""
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"semverRange": ">=5.45.0"
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},
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"compiler": [
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{
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"name": "XC8",
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"semverRange": ""
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"semverRange": "^2.31.0"
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}
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],
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"dfp": {
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"name": "",
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"semverRange": ""
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"name": "AVR-Dx_DFP",
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"semverRange": "^1.7.88"
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},
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"configurator": {
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"name": "",
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"semverRange": ""
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"name": "MCC",
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"semverRange": ">=4.1.0"
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},
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"device": {
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"metaDataVersion": "1.0.0",
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"category": "com.microchip.portal.contentRef",
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"content": {
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"metaDataVersion": "1.0.0",
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"category": "com.microchip.device",
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"name": "",
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"name": "AVR128DB48",
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"versionRange": "*"
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}
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},
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"author": "",
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"author": "Rupali Honrao",
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"subcategories": [
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[
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"Peripherals", "ADC"
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],
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[
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"Peripherals", "USART"
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],
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[
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"Peripherals", "PORT"
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],
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[
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"Peripherals", "CLKCTRL"
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],
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[
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"Peripherals", "TCA"
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],
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[
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"Peripherals", "EVSYS"
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]
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],
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"peripherals": [
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"ADC","USART","PORT","CLKCTRL","TCA","EVSYS"
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],
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"keywords": [
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"8/16 bit timer",
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"Curiosity Nano",
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"Melody",
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"12-bit ADC",
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"Oversampling",
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"Sample-accumulation",
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"CDC",
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"Virtual COM Port",
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"Data Visualizer",
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"Event System"
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],
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"additionalData": {
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"longDescription": {

‎128db48-timer-triggered-adc-sampling-mplab-mcc.X/128db48-timer-triggered-adc-sampling-mplab-mcc.mc3

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‎128db48-timer-triggered-adc-sampling-mplab-mcc.X/Makefile

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#
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# There exist several targets which are by default empty and which can be
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# used for execution of your targets. These targets are usually executed
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# before and after some main targets. They are:
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#
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# .build-pre: called before 'build' target
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# .build-post: called after 'build' target
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# .clean-pre: called before 'clean' target
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# .clean-post: called after 'clean' target
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# .clobber-pre: called before 'clobber' target
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# .clobber-post: called after 'clobber' target
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# .all-pre: called before 'all' target
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# .all-post: called after 'all' target
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# .help-pre: called before 'help' target
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# .help-post: called after 'help' target
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#
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# Targets beginning with '.' are not intended to be called on their own.
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#
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# Main targets can be executed directly, and they are:
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#
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# build build a specific configuration
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# clean remove built files from a configuration
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# clobber remove all built files
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# all build all configurations
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# help print help mesage
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#
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# Targets .build-impl, .clean-impl, .clobber-impl, .all-impl, and
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# .help-impl are implemented in nbproject/makefile-impl.mk.
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#
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# Available make variables:
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#
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# CND_BASEDIR base directory for relative paths
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# CND_DISTDIR default top distribution directory (build artifacts)
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# CND_BUILDDIR default top build directory (object files, ...)
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# CONF name of current configuration
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# CND_ARTIFACT_DIR_${CONF} directory of build artifact (current configuration)
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# CND_ARTIFACT_NAME_${CONF} name of build artifact (current configuration)
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# CND_ARTIFACT_PATH_${CONF} path to build artifact (current configuration)
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# CND_PACKAGE_DIR_${CONF} directory of package (current configuration)
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# CND_PACKAGE_NAME_${CONF} name of package (current configuration)
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# CND_PACKAGE_PATH_${CONF} path to package (current configuration)
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#
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# NOCDDL
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# Environment
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MKDIR=mkdir
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CP=cp
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CCADMIN=CCadmin
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RANLIB=ranlib
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# build
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build: .build-post
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.build-pre:
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# Add your pre 'build' code here...
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.build-post: .build-impl
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# Add your post 'build' code here...
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# clean
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clean: .clean-post
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.clean-pre:
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# Add your pre 'clean' code here...
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# WARNING: the IDE does not call this target since it takes a long time to
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# simply run make. Instead, the IDE removes the configuration directories
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# under build and dist directly without calling make.
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# This target is left here so people can do a clean when running a clean
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# outside the IDE.
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.clean-post: .clean-impl
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# Add your post 'clean' code here...
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# clobber
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clobber: .clobber-post
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.clobber-pre:
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# Add your pre 'clobber' code here...
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.clobber-post: .clobber-impl
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# Add your post 'clobber' code here...
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# all
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all: .all-post
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.all-pre:
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# Add your pre 'all' code here...
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.all-post: .all-impl
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# Add your post 'all' code here...
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# help
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help: .help-post
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.help-pre:
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# Add your pre 'help' code here...
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.help-post: .help-impl
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# Add your post 'help' code here...
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# include project implementation makefile
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include nbproject/Makefile-impl.mk
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# include project make variables
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include nbproject/Makefile-variables.mk

‎128db48-timer-triggered-adc-sampling-mplab-mcc.X/main.c

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/*
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Copyright (c) [2012-2020] Microchip Technology Inc.
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All rights reserved.
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You are permitted to use the accompanying software and its derivatives
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with Microchip products. See the Microchip license agreement accompanying
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this software, if any, for additional info regarding your rights and
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obligations.
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MICROCHIP SOFTWARE AND DOCUMENTATION ARE PROVIDED "AS IS" WITHOUT
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WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING WITHOUT
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LIMITATION, ANY WARRANTY OF MERCHANTABILITY, TITLE, NON-INFRINGEMENT
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AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT WILL MICROCHIP OR ITS
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LICENSORS BE LIABLE OR OBLIGATED UNDER CONTRACT, NEGLIGENCE, STRICT
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LIABILITY, CONTRIBUTION, BREACH OF WARRANTY, OR OTHER LEGAL EQUITABLE
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THEORY FOR ANY DIRECT OR INDIRECT DAMAGES OR EXPENSES INCLUDING BUT NOT
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LIMITED TO ANY INCIDENTAL, SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES,
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OR OTHER SIMILAR COSTS.
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To the fullest extend allowed by law, Microchip and its licensors
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liability will not exceed the amount of fees, if any, that you paid
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directly to Microchip to use this software.
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THIRD PARTY SOFTWARE: Notwithstanding anything to the contrary, any
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third party software accompanying this software is subject to the terms
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and conditions of the third party's license agreement. To the extent
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required by third party licenses covering such third party software,
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the terms of such license will apply in lieu of the terms provided in
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this notice or applicable license. To the extent the terms of such
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third party licenses prohibit any of the restrictions described here,
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such restrictions will not apply to such third party software.
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*/
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#include "mcc_generated_files/system/system.h"
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struct
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{
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uint32_t result;
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uint16_t sample;
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uint16_t average_result;
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} adc_data;
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#define TRUNCATED_SHIFT 4 /* Total number of SAMPLES accumulated are 128. Since this is truncated down to 16 bits, dividing ADC result by 16 or right shifting by 4 will give the average 12-bit ADC result */
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#define MAX_VOLTAGE 3.3
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#define ADC_RESOLUTION 0x0FFF /* In the test setup, VDD = 3.3V, ADC ref is VDD. 12 bit ADC count is 4095 at 3.3V */
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float voltage;
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/***************************************transmit_to_terminal********************************************
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Convert float number (calculated voltage) to string and send to USART3, (PC serial terminal)
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**************************************************************************************************/
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void transmit_to_terminal(float number)
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{
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char string[8];
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dtostrf(number, 4, 2, string);
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printf("\nVoltage:");
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printf(string);
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printf("V");
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}
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/***************************************MAIN*******************************************************
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* Initialize peripherals.
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* Enable ADC Auto trigger.
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* When ADC result is ready(after accumulating 128 samples), read accumulated result.
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* Calculate average result and voltage at analog pin.
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* Send calculated voltage to serial terminal through USART3.
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**************************************************************************************************/
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int main(void)
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{
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SYSTEM_Initialize();
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ADC0_EnableAutoTrigger();
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while(1)
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{
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if(ADC0_IsConversionDone())
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{
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adc_data.result = ADC0_GetConversionResult();
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adc_data.average_result = (uint16_t)(adc_data.result >> (TRUNCATED_SHIFT));
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voltage = (float)(adc_data.average_result * MAX_VOLTAGE) / (ADC_RESOLUTION);
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transmit_to_terminal(voltage);
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}
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}
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}

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