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MPAE-6022: added cnano user guide link, and changed title of Readme. Updated description in metadata, and added keywords
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‎.main-meta/main.json‎

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"version": "1.0.0",
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"displayName": "Gain and Offset Calibration of the Analog Signal Conditioning (OPAMP) Peripheral",
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"projectName": "avr128db48-opamp-gain-and-offset-calibration-mplab",
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"shortDescription": "This application note describes how to calibrate the gain and offset of the Analog Signal Conditioning (OPAMP) peripheral when configured as a Programmable Gain Amplifier (PGA). The microcontroller's (MCU's) internal digital-to-analog converter (DAC) and analog-to-digital converter (ADC) are used to perform the calibration procedure. No external components are required.",
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"shortDescription": "This MPLAB X bare metal example in Gain and Offset Calibration of the Analog Signal Conditioning (OPAMP) Peripheral (AN3633) shows how to calibrate the gain and offset of the OPAMP when configured as a Programmable Gain Amplifier (PGA). The internal Digital-to-Analog converter (DAC) and Analog-to-Digital converter (ADC) are used to perform the calibration procedure. No external components are required.",
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"ide": {
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"name": "MPLABX",
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"semverRange": ">=5.40"
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],
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[
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"Peripherals", "DAC"
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],
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[
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"Peripherals", "VREF"
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],
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[
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"Peripherals", "ADC"
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]
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],
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"peripherals": [
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"OPAMP", "DAC", "VREF", "ADC"
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"OPAMP", "DAC", "ADC"
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],
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"keywords": [
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"Analog Signal Conditioning",
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"Gain",
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"Offset",
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"Calibration"
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"AVR-DB",
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"AVRDB",
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"opamp-gain-and-offset-calibration"
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],
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"additionalData": {
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"longDescription": {

‎README.md‎

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<!-- Please do not change this html logo with link -->
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<a href="https://www.microchip.com" rel="nofollow"><img src="images/microchip.png" alt="MCHP" width="300"/></a>
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# AVR128DB48 Gain and Offset Calibration of the Analog Signal Conditioning (OPAMP) Peripheral
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# Gain and Offset Calibration of the Analog Signal Conditioning (OPAMP) Peripheral
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A new feature introduced in the AVR® DB MCU is the Analog Signal Conditioning (OPAMP) peripheral. The OPAMP peripheral can be configured as a PGA, in this example the internal DAC and ADC are used to calibrate gain and offset for the PGA. For more information on the calibration procedure, see the [application note](https://microchip.com/DS00003633).
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## Related Documentation
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* [AN3633 - Gain and Offset Calibration of the Analog Signal Conditioning (OPAMP) Peripheral](https://microchip.com/DS00003633)
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* AVR128DB48 Curiosity Nano User Guide (link will be added once available)
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* [AVR128DB48 Curiosity Nano User Guide](https://www.microchip.com/DS50003037)
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* [AVR128DB48 Device Page](https://www.microchip.com/wwwproducts/en/AVR128DB48)
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## Software Used

‎avr128db48-opamp-gain-and-offset-calibration.X/main.c‎

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#include <avr/io.h>
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#include <util/delay.h>
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//To program the fuse bits, the FUSE macro is used. The fuse settings are set to the devices production values.
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//To program the fuse bits, the FUSE macro is used. The fuse settings are set to the devices production values.
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FUSES = {
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.WDTCFG = 0x00, // WDTCFG {PERIOD=OFF, WINDOW=OFF}
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.BODCFG = 0x10, // BODCFG {SLEEP=DISABLE, ACTIVE=DISABLE, SAMPFREQ=32Hz, LVL=BODLEVEL0}
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.OSCCFG = 0x78, // OSCCFG {CLKSEL=OSCHF}
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.SYSCFG0 = 0xF6, // SYSCFG0 {EESAVE=CLEAR, CRCSEL=CRC32, CRCSRC=NOCRC}
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.SYSCFG1 = 0xE8, // SYSCFG1 {SUT=0MS, MVSYSCFG=DUAL}
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.CODESIZE = 0x00, // CODESIZE
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.BOOTSIZE = 0x00, // BOOTSIZE
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.WDTCFG = 0x00, // WDTCFG {PERIOD=OFF, WINDOW=OFF}
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.BODCFG = 0x00, // BODCFG {SLEEP=DISABLE, ACTIVE=DISABLE, SAMPFREQ=32Hz, LVL=BODLEVEL0}
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.OSCCFG = 0x00, // OSCCFG {CLKSEL=OSCHF}
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.SYSCFG0 = 0xC0, // SYSCFG0 {EESAVE=CLEAR, CRCSEL=CRC32, CRCSRC=NOCRC}
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.SYSCFG1 = 0x08, // SYSCFG1 {SUT=0MS, MVSYSCFG=DUAL}
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.CODESIZE = 0x00, // CODESIZE
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.BOOTSIZE = 0x00, // BOOTSIZE
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};
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//Macro used to set lockbits. Set to production value.
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LOCKBITS = {
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0x5CC5C55C, // KEY {KEY=NOLOCK}
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0x5CC5C55C, // KEY {KEY=NOLOCK}
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};
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// The VREF (Voltage Reference) peripheral will be set up to generate a

‎avr128db48-opamp-gain-and-offset-calibration.X/nbproject/configurations.xml‎

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<property key="default-bitfield-type" value="true"/>
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<property key="default-char-type" value="true"/>
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<property key="define-macros" value="NDEBUG"/>
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<property key="disable-optimizations" value="true"/>
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<property key="disable-optimizations" value="false"/>
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<property key="extra-include-directories" value=""/>
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<property key="favor-optimization-for" value="-speed,+space"/>
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<property key="garbage-collect-data" value="true"/>
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<property key="optimization-debug" value="false"/>
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<property key="optimization-invariant-enable" value="false"/>
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<property key="optimization-invariant-value" value="16"/>
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<property key="optimization-level" value="-O0"/>
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<property key="optimization-level" value="-O1"/>
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<property key="optimization-speed" value="false"/>
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<property key="optimization-stable-enable" value="false"/>
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<property key="pack-struct" value="true"/>
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<property key="memories.programmemory" value="true"/>
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<property key="memories.programmemory.ranges" value="0-ffff"/>
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<property key="poweroptions.powerenable" value="false"/>
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<property key="programmerToGoFilePath"
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value="C:/GIT/avr128db48-opamp-gain-and-offset-calibration-mplab/avr128db48-opamp-gain-and-offset-calibration.X/debug/free/avr128db48-opamp-gain-and-offset-calibration_ptg"/>
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<property key="programoptions.eraseb4program" value="true"/>
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<property key="programoptions.preservedataflash" value="false"/>
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<property key="programoptions.preservedataflash.ranges"
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<property key="user-pack-device-support" value=""/>
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<appendMe value="-std=gnu99"/>
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</XC8-config-global>
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<nEdbgTool>
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<property key="AutoSelectMemRanges" value="auto"/>
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<property key="communication.activationmode" value="nohv"/>
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<property key="communication.interface" value="updi"/>
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<property key="communication.speed" value="0,500"/>
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<property key="debugoptions.useswbreakpoints" value="false"/>
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<property key="firmware.path"
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value="Press to browse for a specific firmware version"/>
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<property key="firmware.toolpack"
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value="Press to select which tool pack to use"/>
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<property key="firmware.update.action" value="firmware.update.use.latest"/>
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<property key="memories.aux" value="false"/>
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<property key="memories.bootflash" value="true"/>
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<property key="memories.configurationmemory" value="true"/>
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<property key="memories.configurationmemory2" value="true"/>
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<property key="memories.dataflash" value="true"/>
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<property key="memories.eeprom" value="true"/>
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<property key="memories.exclude.configurationmemory" value="true"/>
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<property key="memories.flashdata" value="true"/>
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<property key="memories.id" value="true"/>
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<property key="memories.instruction.ram.ranges"
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value="${memories.instruction.ram.ranges}"/>
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<property key="memories.programmemory" value="true"/>
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<property key="memories.programmemory.ranges" value="0-ffff"/>
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<property key="poweroptions.powerenable" value="false"/>
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<property key="programmerToGoFilePath"
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value="C:/GIT/avr128db48-opamp-gain-and-offset-calibration-mplab/avr128db48-opamp-gain-and-offset-calibration.X/debug/pro/avr128db48-opamp-gain-and-offset-calibration_ptg"/>
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<property key="programoptions.eraseb4program" value="true"/>
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<property key="programoptions.preservedataflash" value="false"/>
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<property key="programoptions.preservedataflash.ranges"
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value="${memories.dataflash.default}"/>
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<property key="programoptions.preserveeeprom" value="false"/>
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<property key="programoptions.preserveeeprom.ranges" value="1400-15ff"/>
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<property key="programoptions.preserveprogram.ranges" value=""/>
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<property key="programoptions.preserveprogramrange" value="false"/>
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<property key="programoptions.preserveuserid" value="false"/>
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<property key="programoptions.programuserotp" value="false"/>
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<property key="toolpack.updateoptions"
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value="toolpack.updateoptions.uselatestoolpack"/>
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<property key="toolpack.updateoptions.packversion"
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value="Press to select which tool pack to use"/>
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<property key="voltagevalue" value=""/>
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</nEdbgTool>
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</conf>
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</confs>
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</configurationDescriptor>

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