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Microchip Technology
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Added 2 projects ADC Sampling and IIR Filtering and ADC Sampling and FIR Filtering
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‎.main-meta/main.json‎

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"content":{
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"metaDataVersion":"1.3.0",
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"name":"com.microchip.mplabx.project.pic24e-dspic33e-code-examples",
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"version":"x.x.x",
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"displayName":"xxxxxxxxxxxxxxx",
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"version":"1.0.0",
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"displayName":"PIC24E/DSPIC33E Code Examples",
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"projectName":"pic24e-dspic33e-code-examples",
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"shortDescription":"xxxxxxxxxxxxxxx",
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"shortDescription":"PIC24E/DSPIC33E Code Examples",
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"ide":{
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"name":"MPLABX",
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"semverRange":">=5.40.0"
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"semverRange":"^1.50.0"
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},
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"dfp":{
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"name":"xxxxxxxxxxxxxxx",
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"semverRange":">=x.x.x"
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"name":"dsPIC33E-GM-GP-MC-GU-MU_DFP",
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"semverRange":">=1.3.85"
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},
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"configurator": {
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"name": "MCC",
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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":"xxxxxxxxxxxxxxx",
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"name":"DSPIC33EP512GM710,DSPIC33EP512MU810,DSPIC33EP256GP506",
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"versionRange":"*"
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}
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},
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"peripherals":[
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"GPIO",
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"ADC",
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],
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"keywords":[
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"GPIO",
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"UART"
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"ADC",
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"Filter",
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"Signal Sampling"
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]
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}
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}

‎ce400-adc-iir-filter/.main-meta/main.json‎

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{
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"metaDataVersion":"1.0.0",
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"category":"com.microchip.ide.project",
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"content":{
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"metaDataVersion":"1.3.0",
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"name":"com.microchip.mplabx.project.ce400-adc-iir-filter",
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"version":"1.0.0",
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"displayName":"ADC Sampling and IIR Filtering",
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"projectName":"ce400-adc-iir-filter",
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"shortDescription":"ADC Sampling and IIR Filtering",
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"ide":{
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"name":"MPLABX",
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"semverRange":">=5.50.0"
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},
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"compiler":{
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"name":"XC16",
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"semverRange":"^1.70.0"
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},
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"dfp":{
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"name":"dsPIC33E-GM-GP-MC-GU-MU_DFP",
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"semverRange":">=1.3.85"
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},
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"configurator": {
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"name": "MCC",
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"semverRange": ">=4.0.1"
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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":"DSPIC33EP512GM710,DSPIC33EP512MU810,DSPIC33EP256GP506",
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"versionRange":"*"
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}
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},
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"peripherals":[
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"ADC",
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],
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"keywords":[
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"ADC",
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"Filter",
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"Signal Sampling",
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"Algorithm"
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]
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}
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}

‎ce400-adc-iir-filter/README.md‎

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![image](../images/microchip.jpg)
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## ADC Sampling and IIR Filtering
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This file contains the following sections:
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- Code Example Description
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- Hardware Used
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- Software Used
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- Reconfiguring the project for a different dsPIC33E device
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- Revision History
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## Description:
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In this example, ADC is configured to sample (AIN5) at 8Khz rate and converted data is assembled as 256 sample buffer before triggering filtering operation.
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Timer 3 is setup to time-out every 125 microseconds (8Khz Rate).
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As a result, the module will stop sampling and trigger a 12-bit A/D conversion on every Timer3 time-out, i.e., Ts=125us.
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At that time, the conversion process starts and completes Tc=14*Tad periods later.
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When the conversion completes, the module starts sampling again. However, since Timer3
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is already on and counting, about (Ts-Tc)us later, Timer3 will expire again and trigger
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next conversion.
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ADC module clock time period is configured as Tad=Tcy*(ADCS+1)= (1/40M)*64 = 1.6us (625Khz).
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Hence the conversion time for 12-bit A/D Conversion Time Tc=14*Tad = 22.4us
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void initTmr3();
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Timer 3 is configured to time-out at 8Khz rate.
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void initAdc1(void);
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ADC module is set-up to convert AIN5 input using CH0 S/H on Timer 3 event in 12-bit mode.
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void initDma0(void);
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DMA channel 0 is configured in ping-pong mode to move the converted data from ADC to DMA RAM on every sample/convert sequence.
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It generates interrupt after every 256 sample transfer.
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void __attribute__((__interrupt__)) _DMA0Interrupt(void);
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DMA interrupt service routine performs IIR filtering on the data buffer.
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## Hardware Used
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- Explorer 16/32 Development Board (https://www.microchip.com/DM240001-2)
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- dspic33ep512gm710(https://www.microchip.com/ma330035) /dspic33ep512mu810 (https://www.microchip.com/MA330025-1)/ dspic33ep256gp506 (https://www.microchip.com/MA330030) PIM
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## Software Used
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- MPLAB® X IDE v5.50 or newer (https://www.microchip.com/mplabx)
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- MPLAB® XC16 v1.70 or newer (https://www.microchip.com/xc)
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## Reconfiguring the project for a different dsPIC33E device:
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The Project/Workspace can be easily reconfigured for dspic33ep512gm710/dspic33ep512mu810/dspic33ep256gp506 device.
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Please use the following general guidelines:
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a. Change device selection within MPLAB® IDE to dspic33ep512gm710/dspic33ep512mu810/dspic33ep256gp506 device of
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your choice by using the following menu option:
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MPLAB X>>Configuration drop-down option>><Listed Device Configuration>
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b. Re-build the MPLAB® project using the menu option:
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MPLAB X>>Build Main Project
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c. Download the hex file into the device and run.
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## Revision History :
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04/01/2006 - Initial Release of the Code Example
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7/01/2010 - Code Example updated for dsPIC33E
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1/22/2014 - Code Example updated for dspic33ep512gm710/dspic33ep512mu810/dspic33ep256gp506
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01/08/2015 - TEST_MODE code added for test automation

‎ce400-adc-iir-filter/firmware/adc_iir_filter.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

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