Manual - MattairTech
Contents
1. g c2 C yH pcye 3 5 5 55 4 E DO 5 6 19 By PBT DI 5 FE2 PDVMOSVPCINT2 I8 1 D2 4 gt 3 PD2 RXDIU ANVINTZ PB3 PDO MISD PCINT3 p3 TS 5 Pox PBAITUPCINTA 18 YT ATmega32U2 i lt gt PAINTS ATSOUSB162 PBSIPCNTS gt _ lt gt B5 05 lt gt 29 5 ag E Ja 4 5 6 PBZ PCINTZ OCOA OCIC 2 T m lt L PHPD CTS HWB TO INTT PCTAINTA CPI CLKO 22 gt p T RESET 2H RESET PCi aw 3 PCB OCIA PCINTB 23 gt C yE F 3 ES 2 2 5 6 5 5 5 5 5 s 2 Bi 9 4 3 m 2 sl 83 5 31 3 amp 8 9 Ucap EI 2 26 16MHz o0 e w 7 2 5 6 5 2 2 ki mane T e N n0 o n VOB E 9 aa A on FLE 2 BOUM Mey en NS 29 DATE 5 17 2011 REVISON Rev FAGE 1 OF 1 DRAWN BY Justin Matta ir October 29 2015 26 http www mattairtech com MT DB U2 Manual Troubleshooting FAQ Nothing yet Support Information Please check the MattairTech website http www2. if the solder jumpers are configured to connect the microcontroller pins directly to the header pins there will be some loading on the pin 1K resistor in series with a 100nF capacitor to ground Clock Source By default a 16 MHz crystal is installed and connected to the XTAL pins of the Atmega32U2 This 16 Mhz clock must be divided by 2 in software if the Vcc voltage is less than 4 5V If an external clock is is used solder jumper J6 can be switched to connect the microcontroller pin directly to header pin rather than the onboard crystal An external clock signal can then be applied to pin X1 XTAL1 This will also free up microcontroller pin CO XTAL2 which can be configured in the microcontroller as a GPIO pin and routed to header pin X2 by switching solder jumper J7 HWB Jumper RESET button LED The HWB Jumper is used to select either the bootloader or user application The pin is sampled after reset or power up Note that the hardware HWB function of the ATmega32U2 is disabled That is the HWBE fuse is disabled The bootloader startup code is always run after reset or power up BOOTRST fuse is set The code samples the state of the HWB pin If the pin is low the bootloader continues to run If the pin is high the user application is run The green LED will pulse on and off using a continuously changing PWM period when the DFU bootloader is running If the preinstalled demo program is running it will be lit when USB is connected
3. CDC Serial driver The following example saves three functions to EEPROM It is then run in the background pulsing the LED using analog write PWM bitlash here v2 0RC4 c 2011 Bill Roy bitlash net type HELP 1706 bytes free gt print free bytes free 1702 bytes free pinMode 13 1 gt d13 1 gt x 255 d 0 gt function brighter if x 255 d 0 else al3 x snooze 2 saved gt function dimmer if x 0 d 1 else 13 snooze 2 saved gt function pulseLED if d 0 dimmer else brighter saved gt 15 function brighter if x 255 d 0 else 13 snooze 2 function dimmer if x 0 d 1 else al3 x snooze 2 function pulseled if 9 0 dimmer else brighter gt run pulseled gt ps 0 pulseled gt stop 0 gt Documentation for Bitlash is available at http bitlash net wiki docindex arg else function help if Is peep print ps return rm run stop switch Commands whila abs ar aw bc beep br bs bw constrain delay dr dw er ew free inb Functions millis min outb pinmode printf pulsein random shiftout sign snooze October 29 2015 24 http www mattairtech com MT DB U2 Manual Old Demo Program The old demo program makes use the use of the MT DB U2 as a CDC device virtual COM port This is one of the most common ways to connect to a PC over USB It uses Dean Camera s open source LUF
4. Information e Device Selection rase Select a device ATmega32U2 e Blank Check ATmega32U6 ATmega64C1 ATmega64M1 8 2 Program 89 51 01 89 51 02 89 511 2 T89CS1RB2 Communication OFF October 29 2015 21 http www mattairtech com MT DB U2 Manual Next click on the USB icon select USB then connect The screen should now show information about the ATmega32U2 Click on the File menu and open the appropriate hex file More information will appear about the program Be sure that erase is checked The firmware cannot be loaded unless the flash is erased first Program must be checked Verify should also be checked Now click on the Run button in the lower left of the screen and the firmware will be quickly loaded onto the ATmega32U2 fo C MT DB U4 MT_DB_U4 hex File Buffer Device Settings Help PS PHATA EL Operations Flow FLASH Buffer Information ATmega32U4 Signature Bytes bs pi pi Size 28 Erase ronga xL Gets Device Boot Ids FB Checksum 5 1 v Blank Check Bootloader Ver 1 2 0 Reset Before Loading o Program HEX File MT DB Ll4 hex 6486 util bytes o Verify AMEL Select EEPROM file parsed USB ON You may also program the EEPROM If so click on Select EEPROM at the bottom Then click on the File menu and open the appropriate eep file You will have to c
5. MattairTech com for firmware and software updates Email me if you have any feature requests suggestions or if you have found a bug If you need support please contact me email is best You can also find support information at the MattairTech website A support forum is planned Support for AVRs in general can be found at AVRfreaks http www avrfreaks net There monitor the forums section as the user physicist Justin Mattair MattairTech LLC PO Box 1079 Heppner OR 97836 USA 541 626 1531 justin mattair net http www mattairtech com Acknowledgments Thanks to Dean Camera http www fourwalledcubicle com for his excellent LUFA library and bootloaders Thanks to the members of AVRfreaks http www avrfreaks net for their support Finally thanks to Atmel for creating a great product the AVR microcontroller October 29 2015 27 http www mattairtech com MT DB U2 Manual Legal Copyright Notices Portions of this code are copyright 2009 2013 Justin Mattair Www mattairtech com This code uses the LUFA USB library Copyright C 2013 Dean Camera www fourwalledcubicle com and distributed under a modified MIT license see files The CDC and DFU bootloaders are modified versions from LUFA The Arduino core files are copyright c 2005 2013 David A Mellis www arduino cc copyright c 2004 2010 Hernando Barragan Wiring Org Cco Copyright 2011 2013 Paul Stoffregen paul pjrc com
6. and 600 mil row spacing which allows for easy mounting on a breadboard It includes a mini USB connector status LED 16MHz crystal reset button HWB boot jumper 3 PWM filters and ISP header pads A bootloader comes preinstalled which allows programming of the chip over USB without an external programmer The ISP header can be used with an external programmer for in system programming This header can be reconfigured to allow the MT DB U2 itself to be an ISP programmer or to be used as a SPI master or slave The board can be powered at 5V via USB at 3 3V via the ATmega32U2 internal regulator and USB or it can be powered externally 3 6V or 4 0V 5 5V All programmable IO pins are routed to headers including those used by on board hardware The chip can be clocked externally and the board is compatible with HV programming The USB connections are also routed to header pins which allows for panel mount USB connectors The PCB is high quality with ENIG gold plated finish red soldermask and white screenprinting showing the pinout It measures approximately 1 7 x 0 8 42mm x 20mm and is 0 062 1 6mm thick MT DB U2 Features e ATmega32U2 USB microcontroller e 32KB FLASH 1KB SRAM 1KB EEPROM e USB device controller Serial USART and SPI communications e 2timers with 5 PWM channels Arduino compatible CDC Arduino AVRDUDE or DFU FLIP bootloader preinstalled Bitlash preinstalled Arduino command shell ISP header pads progra
7. jumper is installed RST Connects to reset pin of microcontroller as well as the reset button A 10K pullup resistor and 100nF capacitor are connected to this pin If jumper J1 is set to ISP In then RST is also connected to pin 5 of the ISP header B6 GPIO pins Port B Consult datasheet for functionality B7 PWM filter C output OC 1C or pin B7 depending on jumper configuration C4 C7 GPIO pins Port C Consult datasheet for functionality C5 PWM filter B output OC 1B or pin C5 depending on jumper configuration C6 PWM filter A output OC 1A or pin C6 depending on jumper configuration October 29 2015 8 http www mattairtech com MT DB U2 Manual D D USB data pins Can be used for panel mount connectors PWM Filters There are three PWM filters which can be used to smooth out a PWM square wave into an analog voltage with some ripple The outputs of these filters can be connected to header pins C6 C5 and B7 using solder jumpers J4 J5 and J3 respectively factory default The filters consist of a 1K resistor and 100nF capacitor The cutoff frequency is 1 2x RC 1 2 17 1K 100nF 21 21 0 0001 21600 Hz This is a first order low pass filter that can output levels from OV to Vcc All three filter inputs are connected to the 16 bit timer 1 output compare pins OC 1A OC 1B and OC 1C The filter inputs are always connected to the microcontroller Therefore
8. tones using timers 3 1 2 and 0 if not using the RTC otherwise timers 3 1 and 0 are used for 3 tones The MT DB UA currently supports up to 3 simultaneous tones using timers 3 1 and O A future release may support a fourth tone from timer 4 The MT DB U2 and MT DB U1 support 2 simultaneous tones using timers 1 and 0 Note that timer 0 has a lower accuracy for tone generation because it is 8 bit timers 3 and 1 are 16 bit Note also that use of timer 0 temporarily disables the use of delay USB autoflushing and proper USB LED handling all of which will return to normal operation once the tone stops playing Thus timer 0 is set with the lowest priority For example if generating DTMF tones on the MT DB U4 timers 3 and 1 will be used However the MT DB U2 and MT DB U1 will both use timer for the second tone October 29 2015 16 http www mattairtech com MT DB U2 Manual If timer 0 is used delay should not be called while timer 0 is generating a tone Instead use delay ms which is included with avr libc If sending data to the USB host ie using Serial print before or during timer O tone generation then it must be manually flushed with Serial flush prior to calling tone and after any subsequent printing during tone generation Otherwise some data may not be sent until the tone stops and autoflushing returns to normal operation The USB LED handling if enabled will also be disrupted during timer 0 tone generati
9. value is setup by ORing three USB options together along with the optional baud rate This works because the three options are stored in the upper bits of the 32 bit value The baud rate is ignored because the fastest speed supported is always used 2Mbps for the 9005 162 ATmega32U2 8Mbps for the ATmega32U4 For example Serial begin 9600 USB LED ENABLED USB WAITFORCONNECT DISABLED USB AUTOFLUSH ENABLED Note that Serial begin is no longer needed to support the HID keyboard or mouse Also note that USB WAITFORCONNECT DISABLED is now the default option it was enabled prior to 1 0 5 USB LED ENABLED USB LED DISABLED If USB LED ENABLED is set then the LED will display the state of the USB connection on October 29 2015 15 http www mattairtech com MT DB U2 Manual whenconnected as well as blink when data is transferred Otherwise the LED will be left on and you can manually control it The default setting is USB LED ENABLED USB AUTOFLUSH ENABLED USB AUTOFLUSH DISABLED If USB AUTOFLUSH ENABLED is set the upstream buffer to the PC will be flushed at periodic intervals The hardware USB DPRAM is used for the RX and TX buffers There are actually two buffers per direction in a ping pong configuration As one buffer fills up it is swapped with the other allowing the USB hardware to read from the filled one and the user to write to the empty one Any number of characters can be sent to the upstream buffer
10. without any need to manage it but it must be flushed at the end of the transmission if USB AUTOFLUSH ENABLED is not set In this case use Serial flush The default setting is USB AUTOFLUSH ENABLED USB WAITFORCONNECT DISABLED USB WAITFORCONNECT ENABLED If USB WAITFORCONNECT ENABLED is set Serial begin will wait for the host to open a connection before returning That is a program like a terminal emulator or serial monitor must connect to the COM port before continuing This is different than the USB CDC connection This is useful to prevent the board from sending data before the host is ready and is required in many cases for microcontrollers with onboard USB ie Leonardo The wait is performed using while Serial The default setting is USB WAITFORCONNECT DISABLED USB AUTORESET ENABLED USB AUTORESET DISABLED If USB AUTORESET ENABLED is set the bootloader will be invoked automatically by the Arduino IDE If USB AUTORESET DISABLED is set a manual reset will be required to enter the bootloader Note that the HWB jumper must be installed for the bootloader to be invoked regardless of method The only exception is when there is no sketch yet installed With the jumper removed the sketch if present will always run There is no delay The default setting is USB AUTORESET ENABLED Updated Tone cpp Tone cpp now supports multiple simultaneous tone generation one tone per timer The MT DB U6 currently supports up to 4 simultaneous
11. A USB library available at http www fourwalledcubicle com The LUFA download includes many examples that can be easily compiled for the ATmega32U2 See the CDC Bootloader section for details on installing the CDC Serial driver The old demo requires an ANSI terminal to allow drawing of the menu system If you see garbage on the terminal screen click on the configuration icon and change the emulation to ANSI or ANSIW After connecting a message that reads Press any Key is printed periodically If you do not see this message just press any key to continue October 29 2015 25 http www mattairtech com MT DB U2 Manual Schematic Mini LSB a Mini AB a Power conflguration solder Jumpers TE 9129 J SS SHIELD NC l sHEELD j AH Vbi us y 2 4 F e 8 pr m o A 4 sd 5 Vous Ucap 1 a 1 9 PCS 5 o 1K m ta ta 2 T2 a 8 8 g 2 amp 5 fot S sl uw 2 r o 2 g E Vee E UVecVec ct 9 e 488 al 8 PC6 m 8
12. ATxmega128A4U USB XMEGA AVR 128KB FLASH 8KB SRAM 2KB EEPROM 3 3V LDO regulator low quiescent current 16MHz and 32 768KHz crystals LED boot jumper PDI header Reset button mounting holes USB DFU bootloader preinstalled MT D21E USB ARM Cortex board ATSAMD21E17A or ATSAMD21E18A 32 pin 128KB 256KB FLASH 16KB 32KB SRAM Onboard 3 3V 250mA LDO regulator 2uA quiescent 16MHz and 32 768KHz crystals USB connector power by USB or external up to 15V Blue LED 10 pin Cortex header 2 buttons 2 pullups USB Mass Storage Bootloader no programmer required October 29 2015 30 http www mattairtech com
13. MHz at 3 3V is out of spec but should work fine at room temperatures When using the USB serial interface it is no longer necessary to include the LUFA USB library header file Then with the bootloader running compile and upload your sketch Note that when using a terminal emulator to communicate with the board be sure to disconnect before switching to the bootloader If the jumper is left on the reset button can be used to switch from the sketch to the bootloader Pressing reset is not necessary with version 1 0 4 and above When the sketch has finished uploading it will run automatically If you installed the bootloader yourself be sure that the BOOTRST fuse is set Note that some example sketches indicate the use of pins using the naming convention October 29 2015 14 http www mattairtech com MT DB U2 Manual D2 D3 etc These are Arduino digital pins not to be confused with port D pins MattairTech boards are printed with both port pin names as well as sequential numbers indicating Arduino digital analog pins 0 means DO or AO 10 means D10 or A10 etc Using Libraries There are several libraries included with Arduino Some of these needed simple changes to work with MattairTech boards If a library was ported it is included in the MattairTech download and installed in the Arduino user directory with MattairTech Port appended to the name of the original directory name This can be seen in the Arduino IDE in File gt Sketch
14. MT DB U2 Manual 15 5 gt lt 1 6 OS m 99 81 32 59 54 95 56 B7 CS 4 D D GND October 29 2015 1 http www mattairtech com MT DB U2 Manual Table of Contents OVS WW 3 lp M 3 MT DB U2 ETSI UTI RU 3 ATlmega32U2 Feature X ee 4 0 02 Par Wal m MMH 6 Layout Header IF ING ise as oie 6 Solder 7 eee ee 8 PWM Nl met EEUU 9 MN 9 HWB Jumper RESET button LED uii obire 9 5 2 E 10 Power UAC eme 11 USB Bus Powered dcs M 11 USB Bus Powered P 11 Ext rnally POWergd 4 0V 10 909 edi sun e 12 Externally Powered 3 0 to 3 6 E t 12 USB SIBI en cd usadas 12 13 13 Pin
15. Mapping sarena 13 MID scr 14 m 14 mtr EIC p TT 15 USB Serial 15 CDC Bootloader nnmnnn 18 ODG Serial 18 IRIS cle CPC M mc p T RI 18 DFU Bootloader FLIP dfu programmer ccce 20 21 At programmet E ERR E T T UE 23 Running Bitlash 24 pee Mes 26 Troubleshooting oe 27 Support 3 27 T 27 EI e 28 Appendix A PC COUNTING me 29 Appendix B Other MattairTech 30 October 29 2015 2 http www mattairtech com MT DB U2 Manual Overview Introduction The MT DB U2 is a development board for the Atmel ATmega32U2 USB microcontroller The Atmega32U2 contains 32 KB of flash 1 KB of 1 KB EEPROM 22 programmable pins and USB device controller The board has 32 pins in a dual inline configuration with 100 mil pin spacing
16. Otherwise the state of the LED is controlled by the user application The bootloader always runs at 8 MHz which is compatible with lower voltages The user may set the cpu speed to 16MHz in software if running at 5V October 29 2015 9 http www mattairtech com MT DB U2 Manual Driver No User Program CDC COM port optional Yes Bootloader Program CDC Serial DFU Bootloader It is not necessary to remove and replace the jumper when switching between the bootloader and the user application The jumper can be left on After FLASH programming the CDC bootloader will automatically jump to the application If using the DFU bootloader then you can command FLIP or dfu programmer to jump to the application Then when running the application the reset button can be pressed to re enter the bootloader This is useful when writing and debugging firmware When the firmware is complete the jumper can be removed so that future resets will always run the application The pins associated with the LED jumper and reset button are all routed to header pins The LED can be disconnected by unsoldering jumper J2 The jumper is connected to pin D7 on one side and to ground through a 240 ohm resistor on the other side There is a 10K pullup on the reset line ISP Header The ISP header is configured by default to allow ISP programming using an external programmer That is RESET is routed to pin 5 Pin 1 is marked on the board it is the pin closes
17. S SSS SS SSS SSS SSS SS SSS SSS SSS SS SSS SSS SSSSS SSS SSS SESS SESS SPI SS SPI SCLK SPI MOSI SPI HISO PCINTO 00 b Yi RST 01 1 07 020 INT7 JUMPER PCINT2 D2 B2 5s 06 019 INT6 PCINT3 D3 B3 50 05 018 PCINT12 PCINT4 04 4 1 2 5 04 017 5 5 05 85 505 2 D3 016 INT3 USART1 TX PCINT6 06 6 a 02 015 INT2 USART1 RX PCINT7 TIMERIC 07 B7 01 014 INTL INT4 D8 C7 9 8 DO D13 INTO TIMEROB LED PCINT8 TIMERIA 09 C6 T c2 D12 PCINT11 PCINT9 TIMERIB 010 c5 0 1 PCINT10 011 4 2 X2 Vbus 3 3V 0 0 9 5V Gnd October 29 2015 13 http www mattairtech com MT DB U2 Manual Installation is recommended to install this separately from existing Arduino 1 x installations 1 Download and install Arduino version 1 0 5 or higher from http arduino cc en Main Software 2 Download the MattairTech Arduino 1 0 5 zip file from http www mattairtech com see product page Unzip this file into your arduino user directory ie My Documents Arduino You may need to create this folder Do not unzip into the arduino system directory from step 1 If you installed a previous version of the MattairTech Arduino port move or remove it It is OK if there are other cores libraries or sketches already present 3 Download and install WinAVR version 201001 10 from http sourceforge net projects winavr f
18. ader has the following compile time options defined define ENABLE LED BOOT define ENABLE LED APPLICATION define DISABLE APPLICATION define ENABLE CLKDIV 1 APPLICATION define ENABLE KEY define ENABLE RESET AFTER PROGRAMMING define NO LOCK BYTE WRITE SUPPORT An alternate version with the above options undefined is available on the website named Bootloader no options hex Use it if the default options interfere with your application For example you may disconnect the LED and use the pin as an analog input When using the auto reset feature of Arduino the boards txt file must currently list the bootloader directory as caterina the bootloader used on the Leonardo The actual bootloader is a modified version of the LUFA CDC bootloader by Dean Camera lufa lib org It resides in the mtdbxx folder where xx corresponds to the board you have So if you wish to use the Arduino IDE to burn the bootloader you must temporarily change the appropriate entry in the boards txt file to point toward the actual bootloader directory Change it back to caterina when finished to re enable auto reset Example for Windows avrdude p m32u4 c avr109 P COM5 U flash w bitlashdemo MT DB U4 hex Example for Linux avrdude p m32u4 c avr109 P dev ttyACMO U flash w bitlashdemo MT DB U4 hex Arduino environment Be sure to select the COM port Then upload your sketch with the Upload button October 29 2015 19 http w
19. ange any jumpers while the unit is powered When using the microcontrollers internal regulator to power itself be sure not to exceed the regulator maximum current output The MT DB U2 contains static sensitive components Use the usual ESD procedures when handling Improper fuse settings may result in an unusable AVR Be certain that you know the effects of changing the fuses that you understand the convention used for describing the state of the fuses programmed 0 and that you are using an appropriate programming speed before attempting to change fuse settings October 29 2015 29 http www mattairtech com MT DB U2 Manual Appendix B Other MattairTech Products AVR Programmer and Multitool ZeptoProg II AVRISP mkII Programmer AVRISPmkII compatible AVR Programmer Supports all AVRs with ISP PDI or TPI Optional 5V output via headers to target board with standard jumper and fuse 4 channel Logic Analyzer Serial bridge pattern generator SPI interface GPIO PWM frequency input amp output Atmel Studio AVRDUDE support Target board voltage of 2V to 5 5V via level shifted pins on two main headers MT DB U6 USB AVR development board AT90USB646 AT90USB1286 USB AVR 64KB 128KB FLASH 4KB 8KB SRAM 5V 500mA LDO regulator 3V 30V input Auto power source selection IC USB External 16MHz and 32 768KHz crystals Arduino compatible CDC or DFU bootloader MT DB X4 USB AVR XMEGA board
20. ations ie to change cpu clock speed and or internal regulator power Power Configuration Jumper J8 Regulator Max CPU USB bus powered 5V Vcc default 3 3V Vec 5V UVcc Enable 16 MHz USB Bus powered 3 3V Vcc 3 3V 5V UVcc Enable 8 MHz Externally powered 4 0 to 5 5V Vcc 3 3V 5V UVcc Vcc Enable 16 MHz Externally powered 3 0 to 3 6V Vcc 3 3V 5V UVcc Disable 8 MHz Care must be taken when configuring the solder jumpers It is possible to cause permanent damage to the device or the power supply by improperly setting the jumpers Do not change any jumpers while the unit is powered When using the microcontrollers internal regulator to power itself be sure not to exceed the regulator maximum current output USB Bus Powered 5V By default the MT DB U2 is configured for 5V from the USB connector Vbus In this configuration solder jumper J8 is set such that Vcc and UVcc are connected to Vbus 5V The AVR internal 3 3V regulator must be enabled default setting This will supply 3 3V to the USB pads and 3 3V header pin USB Bus Powered 3 3V The internal 3 3V regulator can be used to supply the AVR itself with 3 3V In this configuration solder jumper J8 is set such that Vcc is connected to 3 3V and UVcc is connected to Vbus 5V The AVR internal 3 3V regulator must be enabled default setting This will supply 3 3V to the AVR itself October 29 2015 11 http w
21. book gt libraries and File gt Examples If you see the Files gt Examples version of a particular library then you must use it instead of the original library which will still be shown lower on the menu If there is no Files gt Examples version then you can use the original which did not require porting If there is a library you would like to use that is not included with Arduino email support and should be able to quickly support it Often only pin mappings need to be changed The 2 library contains a software 12C library that can be used with the MT DB U1 and MT DB U2 which do not contain 2 hardware USB Serial interface The LUFA directory contains a reorganized subset of the LUFA USB library by Dean Camera fourwalledcubicle com It implements a CDC class device which appears as a COM port on the host computer A terminal emulator or the Arduino serial monitor can be used to communicate with the board Use this interface the same way you would on a standard Arduino Serial printIn The interface is nearly the same as the one in HardwareSerial cpp For example void setup 4 Serial begin 9600 The default settings for USB options are used all enabled pinMode 2 INPUT void loop 4 int sensorValue digitalRead 2 Serial println sensorValue DEC Serial flush needed if autoflush is not used delay 1000 Serial begin sets up the USB serial interface with a single 32 bit argument This
22. copyright c 2006 Nicholas Zambetti and copyright c 2009 Brett Hagman They were modified by Justin Mattair and retain the LGPL 2 1 license see files The Bitlash files are Copyright C 2008 2012 Bill Roy bitlash net They were modified by Justin Mattair and retain the original BSD style license see files Portions of this code are copyright 2003 2012 Atmel Corporation http www atmel com Software Warranty Disclaimer The author disclaim all warranties with regard to this software including all implied warranties of merchantability and fitness In no event shall the author be liable for any special indirect or consequential damages or any damages whatsoever resulting from loss of use data or profits whether in an action of contract negligence or other tortious action arising out of or in connection with the use or performance of this software Hardware Disclaimer This development board kit is intended for use for FURTHER ENGINEERING DEVELOPMENT DEMONSTRATION OR EVALUATION PURPOSES ONLY It is not a finished product and may not yet comply with some or any technical or legal requirements that are applicable to finished products including without limitation directives regarding electromagnetic compatibility recycling WEEE FCC CE or UL except as may be otherwise noted on the board kit MattairTech LLC supplied this board kit AS IS without any warranties with all faults at the buyer s and further users
23. g problems ie a delayed response to user input then change both buffer sizes to 1 CDC Bootloader The CDC bootloader uses the AVR109 protocol and can be used withing the Arduino environment or directly with AVRDUDE Version 130410 or above is required to support the auto reset feature note that several boards that were shipped before 130626 still have the old bootloader If using a terminal emulator you must first disconnect before running the bootloader The bootloader enters programming mode only if the jumper is installed even when using Arduino auto reset The one exception is when the FLASH is empty Even with the jumper installed programming mode will NOT be entered if the reset was from the watchdog timer The one exception to this is when the boot key is enabled and the key matches The key will match when the Arduino IDE auto resets the board to enter bootloader programming mode The key is needed because the Arduino core part of the firmware which listens for the IDE auto reset signal uses a watchdog reset to enter the bootloader This way the user application can make use of the watchdog timer The bootloader will jump to the user application at the end of FLASH programming Other operations with AVRDUDE like writing the EEPROM will not trigger this Just press reset to get back to the bootloader as long as the jumper is installed October 29 2015 18 http www mattairtech com MT DB U2 Manual The default CDC bootlo
24. hange the file filter to allow you to see the eep file Note that eep files are just hex files but with the eep extension instead of hex More information will appear about the file when selected Both Program and Verify should be checked Click run to program the EEPROM You can run your application without removing the jumper or pressing reset by unchecking the reset box and pressing the Start Application button lower right October 29 2015 22 http www mattairtech com MT DB U2 Manual dfu programmer dfu programmer is a command line utility used to program the ATmega32U2 that runs under Linux A DFU driver installation is not required Download version 0 5 4 or higher from http dfu programmer sourceforge net The following commands can be used dfu programmer atmega32u2 erase dfu programmer atmega32u2 flash eeprom YourHex eep if applicable dfu programmer atmega32u2 flash YourHex hex dfu programmer atmega32u2 start to jump to application section without reset October 29 2015 23 http www mattairtech com MT DB U2 Manual Running Bitlash Demo Bitlash Bitlash is an open source interpreted language shell and embedded programming environment The preinstalled Bitlash demo was compiled in the Arduino environment and supports Arduino functions ie dw for digitalWrite A terminal emulator recommended or the Arduino serial monitor may be used See the CDC Bootloader section for details on installing the
25. iles WinAV R 201 9001 10 4 Rename the arduino system directory gt hardware tools avr folder to avr old Copy the WinAVR 20100110 folder to arduino system directory gt hardware tools Rename the copied WinAVR 20100110 folder to avr 5 Create the directory arduino system directory hardware tools avr etc Then copy the file arduino user directory gt hardware MattairT ech install avrdude conf to arduino system directory gt hardware tools avr etc 6 Replace the file lt arduino system directory gt hardware tools avr bin avrdude exe with lt arduino system directory gt hardware tools avr_old bin avrdude exe 7 Replace the file lt arduino system directory gt hardware tools avr avr include avr power h with arduino user directory gt hardware MattairT ech install power h 8 Now plug in the board with the jumper installed so that the bootloader runs Point the driver installer to the directory arduino user directory gt hardware MattairT ech install to install MattairTech CDC inf This same driver is also used for the USB serial interface if used Using Arduino Because of the similarities with the Arduino Leonardo please read http arduino cc en Guide ArduinoLeonardo first Within the Arduino IDE select the appropriate MattairTech board and COM port There are 2 configurations for each board 16MHz 5V and 8MHz 3 3V You may select 8MHz even if using 5V When operating at 3 3V you should select 8MHz Operating at 16
26. ith Interrupt on Transfer Completion Complies fully with Universal Serial Bus Specification REV 2 0 48 MHz PLL for Full speed Bus Operation 12 Mbit s data rate Fully independant 176 bytes USB DPRAM for endpoint memory Endpoint 0 for Control Transfers from 8 up to 64 bytes 4 Programmable Endpoints IN or Out Directions Bulk Interrupt and IsochronousTransfers Programmable maximum packet size from 8 to 64 bytes Programmable single or double buffer Suspend Resume Interrupts Microcontroller reset on USB Bus Reset without detach USB Bus Disconnection on Microcontroller Request e Peripheral Features One 8 bit Timer Counters with Separate Prescaler and Compare two 8 bit PWM channels One 16 bit Timer Counter with Prescaler Compare and Capture three 8 bit PWM channels USART with SPI master mode and hardware flow control RTS CTS Master Slave SPI Serial Interface Programmable Watchdog Timer with Separate On chip Oscillator On chip Analog Comparator Interrupt and Wake up on Pin Change e Chip Debug Interface debugWIRE e Special Microcontroller Features Power On Reset and Programmable Brown out Detection Internal Calibrated Oscillator External and Internal Interrupt Sources 5 Sleep Modes Idle Powersave Powerdown Stby and Ext Stby e l O and Packages 22 Programmable I O Lines October 29 2015 4 http www mattairtech com 02 QFN32 5 5 TQFP32 packages e Operating Voltages 2 7 5 5V e Ope
27. m chip using external programmer 16MHz crystal Green Status LED 3 RC PWM filters on each output compare pin of 16 bit timer 1 can be disconnected Reset button Bootloader selection jumper Mini USB connector Can be powered via USB at 5V Vbus or 3 3V ATmega32U2 internal regulator Can be powered externally at 3V to 3 6V or 4V to 5 5V All programmable IO pins routed to headers including those used by on board hardware USB pins routed to header pins for panel mount USB connector High quality PCB with gold plated finish and red soldermask DIL 32 board standard 0 1 pin spacing Can be mounted on a breadboard Measures approx 1 7 x 0 8 42mm x 20mm and 0 062 1 6mm thick October 29 2015 3 http www mattairtech com MT DB U2 Manual ATmega32U2 Features e High Performance Low Power AVR 8 Bit Microcontroller e Advanced RISC Architecture 125 Powerful Instructions Most Single Clock Cycle 32 x 8 General Purpose Working Registers Fully Static Operation Up to 16 MIPS Throughput at 16 Mhz e Non volatile Program and Data Memories 32K Bytes of In System Self Programmable Flash 1024 Bytes EEPROM 1024 Bytes Internal SRAM Write Erase Cycles 10 000 Flash 100 000 EEPROM Data retention 20 years at 85 C 100 years at 25 1 Optional Boot Code Section with Independent Lock Bits In System Programming by on chip Boot Program True Read While Write Operation Programming Lock for Software Security e USB 2 0 Full speed Device w
28. o connect the USB shield to ground The USB specification calls for the USB shield to be connected to ground on the host side only However it may be desired to ground this on the device side An 0603 SMT component may be soldered on the solder jumper pads as well October 29 2015 12 http www mattairtech com MT DB U2 Manual Arduino Compatibility Features Arduino core and libraries ported to MattairTech USB boards MT DB U2 21 digital 4 PWM 8 INT 13 PCINT SPI USART1 32KB FLASH 1KB SRAM 1KB EEPROM USB Serial interface replaces USARTO Hardware maximum speed of 8Mbps U4 U6 or 2Mbps U1 U2 Can use terminal emulator or serial monitor Uses the same methods as the original HardwareSerial cpp ie Serial printin Hello Based on LUFA USB library by Dean Camera www fourwalledcubicle com USART1 also available can be used at the same time Arduino AVRDUDE compatible CDC bootloader preinstalled on all boards Bitlash Arduino command interpreter bitlash net preinstalled on U2 U4 and U6 boards All libraries included with Arduino download are now supported Bootloader jumps to sketch after upload reset button or auto reset returns to bootloader HID keyboard and mouse support Pin Mapping 55555555555555 5 5 5 MattairTech HT U1 HT U2 AT90USB162 ATmega32U2 SSSSSSSSSSSSSSSSSSSSSSSSSSSSSESETSSEES Interrupt PWH Digital AVR Pin AVR Pin Digital Interrupt Comm other BSSSSSSSSSSSSSSSSS SSS SESS SSS SSSS SSS SS S
29. on During this time the LED will not be able to change state If USB traffic occurs the blink will be delayed until tone generation stops The DTMF Demo sketch demonstrates usage of Tone cpp for DTMF generation on the MT DB U4 October 29 2015 17 http www mattairtech com MT DB U2 Manual CDC Bootloader Arduino AVRDUDE CDC Serial Driver The CDC Serial driver allows the board to appear as a COM port The driver itself is included with Windows but an inf file is needed to configure it Download the inf file from https www mattairtech com software MattairTech CDC Driver Signed zip Note that Windows Vista 64 bit Windows 7 64 bit and Windows 8 require the signed driver You may need to rename the file so that it has the inf extension Next plug in the board with the jumper removed Windows will then prompt you for the MattairTech CDC Serial driver Point the installer to the directory where you downloaded the driver and install ignoring any warnings Once the driver is loaded the device will appear as the MattairTech CDC Serial device using a COM port in the device manager If you wish double click on the CDC Serial device entry in the device manager to configure the driver Nothing on the port settings tab needs to be changed We are using a virtual COM port so the settings are ignored The baud rate will always be as fast as possible On the advanced tab you can adjust the FIFO buffer sizes If you experience any bufferin
30. output from the microcontroller internal 3 3V regulator This pin is connected to Ucap on the microcontroller X2 CO This pin can be connected to the XTAL2 pin of the microcontroller using jumper J7 This is useful if pin CO is used as GPIO if external clock is used This pin is disconnected by default onboard crystal is used X1 This pin can be connected to the XTAL1 pin of the microcontroller using jumper J7 This is useful if an external clock is used This is also useful for HV programming or recovery from incorrectly set fuses This pin is disconnected by default onboard crystal is used C2 GPIO pin Port C Consult datasheet for functionality DO D7 GPIO pins Port D Consult datasheet for functionality 00 LED The green status LED is connected to this pin when solder jumper J2 is set The LED is connected to ground through a 240 ohm resistor The user application is free to use this LED Drive the pin high to turn on the LED D7 HWB This pin is connected to the bootloader jumper HWB The jumper is connected to ground through a 240 ohm resistor The pin is sampled after all reset sources including power up If the pin is low HWB jumper installed then the bootloader is run If the pin is high HWB jumper removed then the user application is run This pin functions as a normal GPIO pin at all other times The 240 ohm resistor provides short circuit protection in case the pin is used as an output and the
31. rating temperature Industrial 40 C to 85 C e Maximum Frequency 8 MHz at 2 7V Industrial range 16 MHz at 4 5V Industrial range U 275 neva wettoirtechicom 22 MatlairTech 38 MI DB U27U1 IS EC 0000060006000000 October 29 2015 5 http www mattairtech com MT DB U2 Manual MT DB U2 Hardware Layout Header Pins eo B I E o ma ae Oz xol o m E ou lt OD 20 B Bi B2 B3 B4 BS B6 October 29 2015 6 http www mattairtech com 02 Solder Jumpers USB Shield Ge Vcc o x UVcc 7 E amp 5V VBus Vcc PWM Filter B E n 3 3V Ucap Enabled jm 2 2 Disabled O g a PWMFilter A 2 amp Enabled er Disabled z e PWM Filter C d zua d 98285 2 3 E 518 0 sg in O Q ISP Connector SE ISP Out SPI ae ISP In fgg 2 October 29 2015 7 http www mattairtech com MT DB U2 Manual Pin Descriptions Pin Description Gnd Ground 5V Vbus 5V output from USB Vbus Vbus pin and 5V pin are tied together Vcc Voltage input pin Use solder jumper J8 to configure This pin is connected to the Vcc and AVcc pins on the microcontroller as well as the ISP header and reset pullup See Power Configuration Section 3 3V 3 3V
32. sole risk The user assumes all responsibility and liability for proper and safe handling of the goods Further the user indemnifies MattairTech LLC from all claims arising from the handling or use of the goods Due to the open construction of the product it is the user s responsibility to take any and all appropriate precautions with regard to electrostatic discharge and any other technical or legal concerns The product described in this document is subject to continuous development and improvements 11 particulars of the product and its use contained in this document are given by MattairTech LLC in good faith However all warranties implied or expressed including but not limited to implied warranties of merchantability or fitness for particular purpose are excluded This document is intended only to assist the reader in the use of the product MattairTech LLC shall not be liable for any loss or damage arising from the use of any information in this document or any error or omission in such information or any incorrect use of the product Trademarks AVR is a registered trademark of Atmel Corporation All other trademarks are the property of their respective owners October 29 2015 28 http www mattairtech com MT DB U2 Manual Appendix A Precautions Care must be taken when configuring the solder jumpers It is possible to cause permanent damage to the device or the power supply by improperly setting the jumpers Do not ch
33. t to the chip The ISP header can be reconfigured so that pin PBO SS is connected to pin 5 rather than RESET This can be done by switching solder jumper J1 This allows the MT DB U2 to be used as an AVRISPmkII programmer itself using Dean Camera s AVRISPmkII software available at http www fourwalledcubicle com A precompiled hex file will be made available at http www mattairtech com on the MT DB U2 product page Note that when using the ISP header in this way Vcc and ground are output to the target board Therefore the target board should not be powered itself You should also verify that it is safe to power the target board through the ISP connector Another use for the ISP header configured with SS on pin 5 is to make use of SPI either as a master or slave SPI can also be used on the normal DIL headers When using the ISP header you may need to remove the HWB jumper to allow the ISP connector to fit October 29 2015 10 http www mattairtech com MT DB U2 Manual Power Configuration The MT DB U2 can be powered in a variety of ways by utilizing solder jumper J8 located on the bottom of the board By default the board is configured to be powered via USB with Vcc at 5V and the microcontroller internal 3 3V regulator enabled and powering only the USB pads The microcontroller clock is configured at boot to run at 8MHz The following lists some of the configurations possible Code may have to be re compiled when switching configur
34. ww mattairtech com MT DB U2 Manual DFU Bootloader FLIP dfu programmer Installation FLIP is a graphical utility used to load firmware into the ATmega32U2 FLIP includes the DFU bootloader driver It supports Windows XP through Windows 7 32 or 64 bit Download FLIP 3 4 2 or higher from http www atmel com dyn products tools 00 id 3886 and install Once FLIP is installed the DFU bootloader drivers can be loaded Install the HWB jumper and power up the board or press reset This will enter the DFU bootloader The LED should be pulsing Windows will then prompt you for the ATmega32U2 driver By default this is located in the Program Files Atmel Flip 3 4 2 usb directory Point the installer to that directory and install Once the driver is loaded the device will appear as the ATmega32U2 device under Atmel USB Devices in the device manager Device Manager File Action View R HOME W82H5W4Vz0 e Atmel USB Devices amp DE wil Batteries 9 Computer 5 Disk drives October 29 2015 20 http www mattairtech com 02 FLIP Install the HWB jumper and power up the board or press reset This will enter the DFU bootloader The LED should be pulsing Now launch the FLIP utility When it has loaded click on the chip icon and select the Atmega32U2 File Buffer Device Settings Help PS 6696 Operations Flow 4 FLASH Buffer
35. ww mattairtech com MT DB U2 Manual the USB pads and the 3 3V header pin Take care not to exceed the datasheet maximum current output of the internal regulator Note that at 3 3V the AVR should be set to run at 8MHz or less This can be done in software using the prescaler Externally Powered 4 0V to 5 5V In this configuration solder jumper J8 is set such that UVcc is connected to Vcc Vcc is then supplied externally with 4 0V to 5 5V on the Vcc header pin The 5V pin still outputs 5V when the USB cable is plugged in The AVR internal 3 3V regulator must be enabled default setting This will supply 3 3V to the USB pads and 3 3V header pin Note that when using a voltage less than 4 5V the AVR should be set to run at 8MHz or less This can be done in software using the prescaler Externally Powered 3 0V to 3 6V In this configuration solder jumper J8 is set such that both UVcc and 3 3V are connected to Vcc Vcc is then supplied externally with 3 0V to 3 6V on the Vcc header pin The internal 3 3V regulator must be disabled in software Note that the regulator is always enabled after reset or powerup and is on when the bootloader is running It is the responsibility of the user application to disable the regulator The 5V pin still outputs 5V when the USB cable is plugged in In this configuration the AVR should be set to run at 8MHz or less This can be done in software using the prescaler USB Shield Jumper J9 can be soldered t
Download Pdf Manuals
Related Search