MOD-IO user`s manual
Contents
1. G1 T DB104 SMD C2 ue EWR VRI 6V uF 50v J 220uF 35V 3 3V EN E c AV VR2 3 3V green VN EN a LM11171MPX ADJ O4 YDJ4134 L 7V 5 wv sw E VV RELAT EE REL4 QouT4 s 8 30 VDC d 100uH SW68 D9 RAS 5 15 R 4 NC RT PWR LED 1N4148 SMD 7N QOUT4 2 R1 C5 n 4Y tod EZ 1K td C3 R2 A D1 L ov TEOK ses SENO srosma co oi BD9001FSO 8 100n 110k md m 8 2K c7 240R cg co ns Qoura4 om te 10n R35 An mE El 100n Ll390R 1 100n 1K T4 AIN 1 1 a BC817 o GND R5 R19 Fmax 50kHz AN1 1 L AIN 1 20 R20 C20 NA 33nF green 03 D8 Rasds AX eus Om A b 1N4148 SMD a ia R40 AIN 1 3OX E ANZ A 1K QOoura2 TB2 3 5mm 100R Ro c2 QOUT3 1 NA 33nF 4 4 p ADC7 PA7 RESET RESET VCC VADCSIPAS uc ADC5 PA5 7 C11 BC817 Eos v v ADC4 PA4 xaz Horee ae MCP130T AN3 ADC3 PA3 ES 33p NAT AIN 2 1O 100R T T ADC2 PA2 8 R24 C22 ADC1 PA1 XTAL1 33V 33p ADCO PAO 1 33nF NA SCK PB7 MISO PB6 AREF MOSI PBS 4 BH10S ES R11 SS PBA AVCC amp green LED 43 2 9 AN4 ki 42 AIN1 PB3 02 AIN 2 20 STAT 330R AINO INT2 PB2 AGND Qour23 TOOR 1 i REL2 REL2 C23 yellow 4o 11P81 Ns R26 3 3V 3 3V aa 42 toe2. MOD IO Open source hardware UEXT extension board with relavs and USER S MANUAL Document revision B May 2015 Designed by OLIMEX Ltd 2014 lead free All boards produced by Olimex LTD are ROHS compliant OLIMEXO 2015 MOD IO user s manual DISCLAIMER 2015 Olimex Ltd Olimex logo and combinations thereof are registered trademarks of Olimex Ltd Other product names may be trademarks of others and the rights belong to their respective owners The information in this document is provided in connection with Olimex products No license express or implied or otherwise to any intellectual property right is granted by this document or in connection with the sale of Olimex products This work is licensed under the Creative Commons Attribution ShareAlike 3 0 Unported License To view a copy of this license visit http www creativecommons org licenses by sa 3 0 This hardware design by Olimex LTD is licensed under a Creative Commons Attribution ShareAlike 3 0 Unported License The part of the example software that was written by Olimex is released under GPL If there are parts of the software belonging to other developers or companies they maintain their respective rights of the code It is possible that the pictures in this manual differ from the latest revision of the board The product described in this document is subject to continuous development and improvements All particulars of the product and its use containe
3. OLIMEXO 2015 MOD IO user s manual 5 2 AVRISP The AVRISP connector is used to program the board You can plug a standard ISP programmer which has a 10 pin connector to it Make sure your programmer supports the programming of ATMEGA16A microcontroller Almost any ISP programmer would be capable of programming the chip OLIMEX sells at least two programmers suitable for the board they are named AVR ISP500 and AVR ISP MK2 both working fine with all versions of Atmel Studio and also open source tools like AVRDude Both have 10 pin ISP connector If your programmer has only 6 pin interface you can still use it for programming as long as you make a small adapter or set jumper wires properly Tables with proper connections required to convert 6 pin ISP to 10 pin ISP are seasy to be found You can also use our adapter AVR ICSP https www olimex com Products AV R Programmers AV R ICSP The pinout of AVRISP might be found below 2 4 6 8 10 o o hk jw B o RST 14 35 7 9 S 3 JTAG The JTAG connector is used to program the board You can plug a standard ISP programmer which has a 10 pin connector into it Make sure your programmer supports the programming of ATMEGA16A microcontroller Almost any ISP programmer would be capable of programming the chip 2 4 6 8 10 1 3 517 19 Page 20 of 30 OLIMEXO 2015 MOD IO user s manual 5 4 EXT The EXT connector has 4 pins from the ATMEGA16
4. also compatible with AVRDude AVR ICSP an adapter 6 lt gt 10 pin AVR ISP SY0605E reliable power supply adapter 50Hz EU 5V 1A for A10 OLinuXino LIME SY0605E CHINA cheaper power supply adapter 50Hz EU 5V 1A for A10 OLinuXino LIME How to purchase You can purchase directly from our online shop or from any of our distributors Note that usually it is faster and cheaper to purchase Olimex products from our distributors List of confirmed Olimex LTD distributors and resellers https www olimex com Distributors Please visit https www olimex com for more info Page 29 of 30 OLIMEXO 2015 MOD IO user s manual 8 4 Product support For product support hardware information and error reports mail to support olimex com All document or hardware feedback is welcome Note that we are primarily a hardware company and our software support is limited Please consider reading the paragraph below about the warranty of Olimex products All goods are checked before they are sent out In the unlikely event that goods are faulty they must be returned to OLIMEX at the address listed on your order invoice OLIMEX will not accept goods that have clearly been used more than the amount needed to evaluate their functionality If the goods are found to be in working condition and the lack of functionality is a result of lack of knowledge on the customers part no refund will be made but the goods will be returned to the user at thei
5. 0 index lt 8 index analog 1_byte amp 0x80 1 0 lt lt index byte lt lt 1 Now add the high 2 bit to the value Page 12 of 30 OLIMEXO 2015 MOD IO user s manual analog h byte amp 0x02 1 0 lt lt 8 analog h byte amp 0x01 1 0 lt lt 9 To convert digital reading to voltage use this voltage analog 3 3 1023 2 6 4 Changing the I2C address of a board Sets new slave address to the board The board ships with default 7bit address 0x58 that can be changed to any other 7bit value in order for the host to interface more than 1 device connected on the bus at the same time Change is stored in EEPROM and thus is permanent between power cycles Changing the address requires the following command format FKK K se se ok K ze ze se oe oe ale FK K oe ok FK FK ze FK FK FK ale ale FK FK K ale FK FK ale gt K SK ale ale S aaaaaaaW cccccccc Oddddddd P FKK K se se ok K ze ze se oe FK FK FK K oe ok FK FK ze FK oe FK FK FK FK FK K ale FK FK ale gt K FK ale ale where S start condition aaaaaaa slave address of the board the default or the old address of the board W write mode should be 0 cccccccc command code should be OxFO ddddddd new 7bit address to update P Stop condition NB To protect the device from accidental address updates the user should hold the on board button pressed not the RESET button while issuing the command Successful
6. I3 IN3 connected to AINO INT2 PB2 signal I2 IN4 connected to INT1 PD3 signal I1 The digital inputs high position would typically mean input signal is in the 3 24 V range The digital inputs low position would typically mean input signal in 0 1 V range 5 7 2 OUT1 OUT2 OUT3 OUT4 digital outputs The digital outputs are controlled by the big orange relays on the top of the board OUT1 connected to ADC3 PA3 signal name O4 OUT connected to ADC2 PA2 signal name O3 OUTS connected to ADC1 PA1 signal name O2 OUTA connected to ADCO PAO signal name O1 5 7 3 AIN 1 and AIN 2 analog inputs The analog inputs are located on two connectors that are placed next to each other The connectors are named AIN 1 and AIN 2 AIN 1 Pin Signal Name Connected to b m CESE b jm eecopns AIN 2 Pin Signal Name Connected to 1o m wo 5 jm bcnPn B AGND Analog GND Page 23 of 30 OLIMEXO 2015 MOD IO user s manual S 8 PWR jack The power jack used is the typical 2 5mm one used by Olimex in most of our products You should provide 5 volts direct current and the required current may vary depending on the peripherals connected to the board The power supply you use should be capable of providing at least 1A of current Pin Signal Name a Power Input More info about the power supply can be found in chapter 5 of this manual 5 9 A
7. JTAG connector pin 6 Atmega16A pin 4 RESET R9 100R R10 10k C10 100nF and a RST button Page 24 of 30 OLIMEXO 2015 MOD IO user s manual CHAPTER 6 SCHEMATICS 6 Introduction to the chapter In this chapter is located information about the schematics describing logically and physically MOD IO 6 1 Eagle schematic Latest MOD IO schematics may be found at its web page in the HARDWARE section https www olimex com Products Modules IO MOD IO The board and schematic files are usually packed in a zip archive We mostly use Eagle by Cad Soft 4 16r2 for designing However the files should be compatible with the latest Eagle available Cad Soft offers a trial version of their software that allows you to inspect schematics and board files without being able to modify them This work is licensed under the Creative Commons Attribution ShareAlike 3 0 Unported License To view a copy of this license visit http creativecommons org licenses by sa 3 0 If you are looking for a schematic of an older revision of the board and it isn t available at our web site you may request it by the support e mail Page 25 of 30 OLIMEXO 2015 MOD IO user s manual
8. outside of the shipping box Please note It is your responsibility to ensure that returned goods reach us Please use a reliable form of shipping If we do not receive your package we will not be held liable Shipping and handling charges are not refundable We are not responsible for any shipping charges of merchandise being returned to us or returning working items to you The full text might be found at https www olimex com wiki GTC Warranty for future reference Page 30 of 30
9. update is indicated with the on board status LED being contently lit for 2 3 seconds Address is immediately updated so the board will not respond to its old address any more IMPORTANT The default address of the board could be restored if the on board button is held pressed at power up for more than 4 seconds This situation is indicated by the on board LED blinking fast for the timeout period When the fast blinking ends default address is restored Example Change address to 0x22 in pseudo code i2cStart Send start condition i2cSend 0xb0 This is 0x58 shifted to left one time and added 0 as W i2cSend OxF0 Command to change address i2cSend 0x22 New address i2cClose Send stop condition Page 13 of 30 OLIMEXO 2015 MOD IO user s manual 2 7 Arduino with MOD IO We provide a ready to use library for Arduino IDE with an example code for turns on and off all relays of MOD IO The code also allows the reading and printing of all digital inputs and all analog inputs over the serial monitor In order to set it up first download the archive from the link below https www olimex com Products Modules IO MOD IO resources MOD IO ARDUINO zip 1 Extract the archive copy and paste the folder MOD IO into the libaries folder of your Arduino IDE 2 Start Arduino IDE 3 To load the example navigate to File Examples gt MOD IO gt RELAYS INPUTS 4 Remember to select your board and the COM port it uses for communicati
10. A s port D PDA PD5 PD6 and PD7 it has a VCC and GND for easier access also gp EE PD5 PDA GND Page 21 of 30 OLIMEXO 2015 MOD IO user s manual 5 5 UEXT MALE This connector is usually used for the I2C communication with the host board the more powerful board that uses the MOD IO Additional 10 pin female female cables might be purchased from our web shop https www olimex com Products Components Cables CABLE IDC10 15cm 5 6 UEXT FEMALE The UEXT female connector is not typical for the OLIMEX boards It allows multiple MOD IO boards to be connected to each other even without the need of a cable Just plug the UEXT FEMALE of board 1 to the UEXT MALE of board 2 You can have as many boards as you want as long as each of them has unique identifier for the I2C communication 246 8 10 5 7 Digital inputs digital outputs and analog inputs The board is equipped with connectors for analog input It has optocouplers on the digital input lines It also has relays on the digital outputs All of the inputs and outputs can be controlled and monitored by the default firmware of the board sending and receiving commands over the I2C line located on the UEXT connector Page 22 of 30 OLIMEXO 2015 MOD IO user s manual 5 7 1 IN1 IN2 IN3 IN4 digital inputs eip IN1 connected to TO PBO signal I4 IN2 connected to T1 PB1 signal
11. C or DC voltage to board The AC voltage has to be in the 6V to 20V range The DC voltage has to be in the 8V to 30V range The typical consumption of MOD IO with the default firmware and no additional peripherals connected and no relays turned on is as follows 0 02A 9 8V DC 0 02A 16V DC 0 01A 30V DC After the board is powered the red PWR LED would turn on and yellow STAT LED would start blinking The behavior of the STAT LED is determined by the firmware software on the board For the European customers we sell two power supply adapters please check chapter 2 2 Note that it is normal that when the board is powered some integrated circuits might appear hotter Page 8 of 30 OLIMEXO 2015 MOD IO user s manual than others This is perfectly normal for some chips for instance voltage regulators and the main processor 2 5 Changing the firmware In order to change the firmware of MOD IO you would need an ISP programmer or a JTAG debugger Such tools might be purchased from various sources including Olimex If you are in doubt whether a tool would work with MOD IO you should ensure that 1 the tool supports the main microcontroller AVR ATmega16A and 2 the tool has either 10 pin JTAG connector or 10 pin ISP connector or you would need to use jumper wires or adapter As already mentioned in chapter 2 3 Software requirements to edit the original firmware you would need AVR Studio 4 since this is the integrated de
12. IO THEY ARE CONSIDERED SUITABLE ONLY FOR MOD IO Page 2 of 30 OLIMEXO 2015 MOD IO user s manual Table of Contents DISCLAIMER cir AGRON aie 2 CHAPTER 1 OVERVIEW A 5 1 introduction to the O 5 11 Pere ci 5 1 2 Target market and purpose of the board eee eren eere enne eere 5 LADO A IEA M 6 1 4 Board versi n used in the manuale bestes ense tappa de btt bao eie td esten nac rara indice crdacas 6 1 5 Document argalbralillu sci idco a I AAA AAA AAA AAA a DUK FERRE QUE co oL A 6 CHAPTER 2 SETTING UP THE MOD IO BOARD e eee ee eee oon 7 2 Introduction t the Cd ios 7 6 h 2 6 4 Changing the BC address of aborda di 13 2 7 Ardua with MODI nicer AA A EDD a odd 14 CHAPTER 4 THE ATMEGA16A MICROCONTROLLEXR 2 17 4 Introduction to the Chapter cccccccssssscssssssssssssssssssscssssssssssssssssssscssscssssssssssssssssssssssscsssees 17 CHAPTER S CONNECTORS AND PUNO Dies 19 5 introduction to the chapter iiis iocos coe oo Ecke ve raa sa cease a E sag M eR ERUEO 19 5 1 Communication with MOD IG uicecaciasisessn ees seso sudo ass sedeo siae rds S ao oa aias 19 a AN AB a ego ibo Dept A PA MM EDI ia ies 20 EN cat A eds ae as Daa IS A A SAA 20 21 22 22 22 Page 3 of 30 OLIMEXO 2015 MOD IO user s manual 6 fuiroduction to the Chapter 25 LES A AS 25 6 2 Phy
13. ard to reach spot Some of the above suggested items can be purchased by Olimex for instance AVR ISP500 an STK500 compatible low cost programmer compatible with Atmel Studio 6 or any previous version also compatible with AVRDude AVR ISP MK2 an open source programmer based on ISP MKII compatible with Atmel Studio 6 or any previous version also compatible with AVRDude AVR ICSP an adapter 6 lt gt 10 pin AVR ISP SY0612E reliable power supply adapter 50Hz for EU 12V 0 5A for A10 OLinuXino LIME SY0612E CHINA cheaper power supply adapter 50Hz for EU 12V 0 5A for A10 OLinuXino LIME 2 3 Software requirements Olimex provides the sources of the firmware built in MOD IO The project was created and compiled with AVR studio 4 In order to edit the firmware you would need to set up an AVR environment AVR studio and Atmel studio are typically used They are supported by Atmel and free to use The environments are not considered open source however Alternatively there are a number of open source tools that can be used the most popular programmer being AVRDude There are a lot of tutorials on how to configure a Linux environment for AVR Please note that setting such a working development environment under Linux might be a quite a time consuming task 2 4 Powering the board The only way to power the board is to provide sufficient voltage and current to the PWR J connector The owner of the board has to provide either A
14. d P FKK K FK se ok K FK ze se ok oe FK FK FK se ok FK FK ze FK oe FK e FK FK FK K ale FK FK K gt K SK ale ale where S start condition aaaaaaa slave address of the board W write mode should be 0 cccccccc command code should be 0x30 for AIN1 0x31 for AIN2 0x31 for AIN3 0x31 for AIN4 P Stop condition R read mode should be 1 dddddddd 000000dd Little Endian LSB MSB 10bit binary encoded value corresponding to the input voltage Range is 0 0x3FF and voltage on the pin is calculated using the following simple formula voltage 3 3 1024 read value Volts Note Successive readings from the board without reissuing the command code will not get an updated value of the voltage i e the user will read the same value until another command is issued Example Reading AN1 in pseudo code i2cStart Send start condition i2cSend 0xb0 This is 0x58 shifted to left one time and added 0 as W i2cSend 0x30 Read analog value of IN1 i2cStop Send stop condition i2cStart Send start condition You can use i2cRestart instead i2cSend 0xb1 This is 0x58 shifted to left one time and added 1 as W byte i2cRead Read the low 8 bits of the ADC reading h byte i2cRead Read the high 2 bit of the ADC reading i2cStop Send stop condition Sincel byte is LSB MSB we need to convert it to MSB LSB To swap bits one by one do the following analog 0 for int index
15. d RC Oscillator W External and Internal Interrupt Sources B Six Sleep Modes Idle ADC Noise Reduction Power save Power down Standby and Extended Standby m 1 O and Packages W 32 Programmable I O Lines B Operating Voltages m 2 7 5 5V W Speed Grades gm 0 8MHz B Power Consumption 2 1 MHz 3V and 25 C B Active 1 1 mA m Idle Mode 0 35 mA B Power down Mode lt 1 pA More information can be found on Atmel s web site at the following web address http www atmel com images doc8154 pdf Page 18 of 30 OLIMEXO 2015 MOD IO user s manual CHAPTER 5 CONNECTORS AND PINOUT 5 Introduction to the chapter In this chapter are presented the connectors that can be found on the board all together with their pinout and notes about them Jumpers functions are described Notes and info on specific peripherals are presented Notes regarding the interfaces are given 5 1 Communication with MOD IO There are several ways for communication with MOD IO and its main microcontroller ATMEGAI6A The three typical communication routines are via I2C by utilizing the default firmware via ISP with a compatible programmer tool and writing own code via JTAG with a compatible debugger tool and writing own code The communication with the board s default firmware is performed typically via the I2C line that might be found on the UEXT connector For more information on how the default firmware might be accessed please refer to chapter 2 6 Page 19 of 30
16. d in this document are given by OLIMEX in good faith However all warranties implied or expressed including but not limited to implied warranties of merchantability or fitness for purpose are excluded This document is intended only to assist the reader in the use of the product OLIMEX Ltd 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 This evaluation board kit is intended for use for engineering development demonstration or evaluation purposes only and is not considered by OLIMEX to be a finished end product fit for general consumer use Persons handling the product must have electronics training and observe good engineering practice standards As such the goods being provided are not intended to be complete in terms of required design marketing and or manufacturing related protective considerations including product safety and environmental measures typically found in end products that incorporate such semiconductor components or circuit boards Olimex currently deals with a variety of customers for products and therefore our arrangement with the user is not exclusive Olimex assumes no liability for applications assistance customer product design software performance or infringement of patents or services described herein THERE IS NO WARRANTY FOR THE DESIGN MATERIALS AND THE COMPONENTS USED TO CREATE MOD
17. dditional hardware components The components and circuits below are mounted on MOD IO but are not discussed thoroughly in the document above They are listed here for completeness PWR_LED shows whether the board is powered turns on upon powering the board STAT LED general purpose LED that can be programmed by the user blinks upon powering the board connected via R11 330 Ohm to Atmega16l pin 43 AIN1 PB3 Status LED red with name LED1 visualize input IN1 state Status LED red with name LED2 visualize input IN2 state Status LED red with name LED3 visualize input IN3 state Status LED red with name LED4 visualize input IN4 state Status LED green with name O1 visualize relay REL 1 state Status LED green with name O2 visualize relay REL2 state Status LED green with name O3 visualize relay REL3 state Status LED green with name O4 visualize relay REL4 state RST button used to reset the board connected to Atmega16A pin 4 RESET BUT button general purpose button that can be programmed by the user connected to Atmegal6A pin 11 INTO PD2 Quartz crystal Q1 8 MHz connected to ATmega164A pin 7 XTAL2 and pin 8 XTAL 1 Quartz crystal Q2 32 768kHz real time clock quartz crystal connected to ATmega164A pin 25 TOSC1 PC6 and pin 26 TOSC2 PC7 Reset circuit MOD IO reset circuit includes a reset chip MCP130T U2 AVRISP connector pin 5
18. e chapter In this chapter you will find the current and the previous version of the document you are reading Also the web page for your device is listed Be sure to check it after a purchase for the latest available updates and examples 7 1 Document revision A 26 06 14 Initial manual release Fixed typo in commands required by i2c tools added instruction for usage in B 14 05 15 Arduino improved the section borders 14 19 30 for better readability improved the numbering of the chapters 7 2 Board revision Remember to check the schematics and the board design files to compare the differences pk foc release of the board Page 28 of 30 OLIMEXO 2015 MOD IO user s manual 8 3 Useful web links and purchase codes The web page you can visit for more information about your device are https www olimex com Products Modules TO MOD IO open source hardware Wiki article of the board https www olimex com wiki MOD IO A place for general questions FAQ or friendly talk https www olimex com forum You may may join our IRC channel Zolimex freenode net http webchat freenode net channels olimex ORDER CODES MOD IO the product for which this manual is about AVR ISP500 an STK500 comaptible low cost programmer compatible with Atmel Studio 6 or any previous version also compatible with AVRDude AVR ISP MK2 an open source programmer based on ISP MKII compatible with Atmel Studio 6 or any previous version
19. eparate topic organized as follows Chapter 1 is an overview of the board usage and features Chapter 2 provides a guide for quickly setting up the board and software notes Chapter 3 contains the general board diagram and layout Chapter 4 describes the component that is the heart of the board the ATmega16A microcontroller Chapter 5 covers the connector pinout peripherals and jumper description Chapter 6 provides the schematics and the dimensions of the board Chapter 7 contains the revision history useful links and support information Page 6 of 30 OLIMEXO 2015 MOD IO user s manual CHAPTER 2 SETTING UP THE MOD IO BOARD 2 Introduction to the chapter This section helps you set up the MOD IO extension development board for the first time Please consider first the electrostatic warning to avoid damaging the board then discover the hardware and software required to operate the board The procedure to power up the board is given and a description of the default board behavior is detailed 2 1 Electrostatic and electrical polarity warning MOD IO is shipped in a protective anti static package The board must not be exposed to high electrostatic potentials A grounding strap or similar protective device should be worn when handling the board Avoid touching the component pins or any other metallic element When connecting other electrical devices to the MOD IO board make sure that they have equal electrical polar
20. grammer JTAG 5x2 pin connector for in circuit programming with AVR JTAG AVR JTAG USB or another compatible JTAG debugger EXT extension connector for the unused AVR ports e Status LED Reset IC ZM33064 e Quartz crystal oscillator circuit 8MHz e DC DC with input voltage 8 30VDC this board can be powered from 24V industrial power supplies Power plug in jack Four mounting holes 3 3 mm 0 13 FR 4 1 5 mm 0 062 red soldermask white silkscreen component print Dimensions 80x100 mm 3 9x3 15 1 2 Target market and purpose of the board The Olimex boards that carry the MOD prefix in their product name are typically extension boards with a UEXT connector They are usually used to expand the functions of a host board another board with main microcontroller of its own and UEXT connector UEXT is a board to board connector which supports three serial communication interfaces I2C SPI and RS232 It is a great way to expand the features of the development boards you already Page 5 of 30 OLIMEXO 2015 MOD IO user s manual have The customer can choose which new feature he wants to expand More on the UEXT might be found in the following document https www olimex com Products Modules UEXT resources UEXT rev B pdf MOD IO provides 4 relays with proper connector that allow the switching of circuits The board is also equipped with 4 optocouplers also known as opto isolators that transfer electrical signals bet
21. ic Operation Up to 16 MIPS Throughput at 16 MHz On chip 2 cycle Multiplier m High Endurance Non volatile Memory segments 16K Bytes of In System Self programmable Flash program memory 512 Bytes EEPROM 1K Byte Internal SRAM Write Erase Cycles 10 000 Flash 100 000 EEPROM Data retention 20 years at 85 C 100 years at 25 C 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 B JTAG IEEE std 1149 1 Compliant Interface W Boundary scan Capabilities According to the JTAG Standard W Extensive On chip Debug Support W Programming of Flash EEPROM Fuses and Lock Bits through the JTAG Interface W Peripheral Features W Two 8 bit Timer Counters with Separate Prescalers and Compare Modes One 16 bit Timer Counter with Separate Prescalers Compare Mode and Capture Mode Real Time Counter with Separate Oscillator Four PWM Channels 8 channel 10 bit ADC m 8 Single ended Channels W 7 Differential Channels in TQFP Package Only m 2 Differential Channels with Programmable Gain at 1x 10x or 200x Byte oriented Two wire Serial Interface Programmable Serial USART Master Slave SPI Serial Interface Programmable Watchdog Timer with Separate On chip Oscillator Page 17 of 30 OLIMEXO 2015 MOD IO user s manual W On chip Analog Comparator W Special Microcontroller Features B Power on Reset and Programmable Brown out Detection W Internal Calibrate
22. initial functionality The project was compiled with AVR studio 4 and WinAVR compiler available at sourceforge net Page 9 of 30 OLIMEXO 2015 MOD IO user s manual The demo requires an established hardware I2C connection between the module and a host board You would need to send and receive parameters to the slave device to be able to communicate with the following peripherals on the board Digital outputs relays OUT1 OUT2 OUT3 OUTA signals O1 O2 O3 O4 Digital inputs optocouplers IN1 IN2 IN3 INA signals I1 I2 I3 14 Analogue inputs AIN 1 2 AIN 1 3 AIN 2 1 AIN 2 2 signals AN1 AN2 AN3 ANA There is nothing specific about the I2C protocol Default address of the slave is 051011000 0x58 When addressed the device acknowledges reception with an ACK flag set to 0 to indicate its presence After connection is established you can use additional commands detailed below 2 6 1 Setting relays Set states of the digital outputs on the board The board features four relay outputs named OUT1 OUT2 OUT3 and OUTA that can be set together with one command The command should have the following 3 byte format FKK K se se ok ke ze ze se ok oe FK FK K oe FK FK FK zie FK oe FK ale FK FK FK gt K ale FK ale K gt K FK ale ale S aaaaaaaW cccccccc 0000dddd P FKK K se se ok K ze ze se oe oe ke FK FK se ok FK FK ze FK oe FK K FK FK FK K ale FK FK FK gt K SK ale ae where S start condition aaaaaaa
23. ity This usually occurs in setups where you need to use more than one power supply unit If you have such a setup make sure different power supplies are connected to the same electrical source to the same utility power socket In rare cases different polarity might cause hardware damage to one of the boards in your setup 2 2 Hardware requirements In order to set up the MOD IO optimally one or more additional items may be used They might be generally placed in three categories Required items that are needed in order to achieve minimum functionality Recommended items that is good to have in order to be able to interact with the most important of the features of the board Additional items that provide access to additional features or expand the features of the board Required items Power supply unit that is able to provide 6V 20V AC or 8V 30V DC Recommended items An ISP programmer or a JTAG debugger if you wish to modify the firmware you would need a way to upload the binary code to the board in case you wipe the memory accidentally or you need to replace the main microcontroller you would also need such a tool Please note that Olimex has a few low cost programmers supported both in Atmel studio and in AVRDude Additional items include Jumper cables comes in handy when you want to connect something to the MOD IO or when Page 7 of 30 OLIMEXO 2015 MOD IO user s manual you want to measure a h
24. o D7 RAS 05 15 NA 3anF O O 26 1N4148 SMD ZX T M Ourz JTAG 32768Hz 6pR 25 TOSC2 PC7 AIN 2 3 2 1 TCK TDI 24 TOSC1 PC6 TE o3 4 3 IDO TDO 23 PCS TDI Qour24 TB2 3 5mm T 3 3V RSI 6 5 TMS TMS 22 POMTDO O B 7 TCK 21 PC3TMS vec T2 10 9 A PC2 TCK t DA o PC1 SDA vec2 BC817 PCO SCL 1 16 1 2 15 OC2 PD7 red 3 14 ICP PD6 GND c18 R27 LED4 pe R28 El ociejeba enoi 184 in4 2 O BH 4 on 4 5 E qa OBI 100n 100n 100n 330R 4 7K 6 2 Bur 11 INT1 PD3 39 D5 w a a Ja s 1g NTO PD2 enoz 4 green 2 Txn 2 c TXD PD1 01 1N4148 SMD EXT L BXD Rxpjepo IN4 1 H11A817SMD I WF6S S RU T o ren OOUT13 ia ATMEGA16L pe RAS 0b 15 nie 1N4148 SMD ZX 1K Qour12 re O 1 4 R29 ipe ES WT R30 IN3 2 s s 330R Ww s Qu 4 7K Qouria D4 2 3 1N4148 SMD T L B BC817 R32 4 4 7K R16 R17 R18 m NA 4 7K 47K M O D O 14 mm UEXT MALE UEXT FEMALE pond red ya c19 COPYRIGHT C 2009 O El Rat AUT http l d INT 2 p www olimex com dev TTK 100n Y 14107A 6x3 8x2 5mm 1N4148 SMD ir L BH10S IDC10S PCB IN1 1 Page 26 of 30 MOD IO user s manual OLIMEXO 2015 imensions 6 2 Physical d Note that all dimensions are in mm uw Qyee uw Qy o2 uw 21 89 uw BLS uw C8 t uu Pa OD wu gue 24 28 mm 27 58 mm m as Page 27 of 30 OLIMEXO 2015 MOD IO user s manual CHAPTER 7 REVISION HISTORY AND SUPPORT 7 Introduction to th
25. on 5 The demo uses serial communication it is recommended to use the serial monitor in Arduino IDE it can be started from Tools Serial Monitor The example was tested with OLIMEXINO 328 and MOD IO with I2C address 0x58 Refer to the comments inside the example for more information 2 8 OLinuXino boards with MOD IO You can connect MOD IO to all OLINUXINO boards that have UEXT connector Connect the two boards using UEXT cable After that boot the default Debian and use the program called i2c tools If it is missing enter the following commands in the console of your OLINUXINO board to obtain it apt get update apt get install i2c tools To set all relays use i2cset y f 2 0x58 0x10 OxOF where i2cset the part of i2c tools that is used to for sending data over the i2c y skips confirmation f2 specifies the number of the I2C bus used test with values 1 or 2 0x58 the I2C address of the board that we want to send data to Ox10 the command to set relays different commands have different code refer to chapter 2 6 of this manual OxOF the state of relays is stored in the 4 least significant bits of the binary representation of OxOF gt 0b00001111 affecting all 4 relays other example 0x05 0b00000101 gt affects relays 1 and 3 Page 14 of 30 OLIMEXO 2015 To turn off all relays use i2cset y f 2 0x58 0x10 OxOF To read digital inputs i2cget y f 2 0x58 0
26. r expense All returns must be authorized by an RMA Number Email support olimex com for authorization number before shipping back any merchandise Please include your name phone number and order number in your email request Returns for any unaffected development board programmer tools and cables permitted within 7 days from the date of receipt of merchandise After such time all sales are considered final Returns of incorrect ordered items are allowed subject to a 10 restocking fee What is unaffected If you hooked it to power you affected it To be clear this includes items that have been soldered to or have had their firmware changed Because of the nature of the products we deal with prototyping electronic tools we cannot allow returns of items that have been programmed powered up or otherwise changed post shipment from our warehouse All returned merchandise must be in its original mint and clean condition Returns on damaged scratched programmed burnt or otherwise played with merchandise will not be accepted All returns must include all the factory accessories which come with the item This includes any In Circuit Serial Programming cables anti static packing boxes etc With your return enclose your PO Also include a brief letter of explanation of why the merchandise is being returned and state your request for either a refund or an exchange Include the authorization number on this letter and on the
27. s applied to the optocoupler 0 means the opposite Note Successive readings from the board without reissuing the command code will not get an updated value of the ports i e the user will read the same value until another command is issued Example Reading optocoupled inputs in pseudo code i2cStart Send start condition i2cSend 0xb0 This is 0x58 shifted to left one time and added 0 as W i2csend 0x20 Read inputs commands i2cClose Send stop condition i2cStart Send start condition You can use i2cRestart instead i2cSend 0xb1 This is 0x58 shifted to left one time and added 1 as W byte i2cRead X Read one byte of data i2cClose byte now holds the state of the inputs To decode bitmask the data inl byte amp 0x01 To get state of IN1 in2 byte amp 0x02 To get state of IN2 in3 byte amp 0x04 To get state of IN3 in4 byte 0x08 To get state of INA Page 11 of 30 OLIMEXO 2015 MOD IO user s manual 2 6 3 Reading the value of an analog input Get the voltage applied to one of the analogue inputs of the board The board features four 10bit resolution analogue inputs input voltages from 0 3 3V and each of them is read with a separate command Command should have the following common format FKK K se se ok ke ze zie se oe oe FK FK FK se ok FK FK ze FK oe FK ale FK FK FK K ale FK ale ale gt K DK ale ae S aaaaaaaW cccccccc P S aaaaaaaR dddddddd 000000d
28. sical CIMENSIONS A e ic 27 7 edicion to the Chapter cccssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssess 28 7 1 Doc inehnt revisiO c 6 aede oer ea eve cae eode A eu ava vea o caque Pa eese oo Dese resa CTa pu Dea uoce a ta vua 28 7 2 Board VISION A ac 28 8 3 Useful web links and purchase COCG sssssssssssssssssssssssssssssssssssssssssscsssssssccsssssscsscsosses 29 Page 4 of 30 OLIMEXO 2015 MOD IO user s manual CHAPTER 1 OVERVIEW 1 Introduction to the chapter Thank you for choosing the MOD IO extension module from Olimex This document provides a user s guide for the MOD IO board As an overview this chapter gives the scope of this document and lists the board s features The document s organization is then detailed The MOD IO board allows easy expansion of the functionality of other boards by adding relays optocouplers and analog inputs MOD IO is an open source open hardware project and all documentation is available to the customer 1 1 Features The board has the following set of features Open source hardware board with ATMega16L 8AU microcontroller 4 optocoupler isolated inputs with screw terminals Input status LEDs 4 relay outputs with 5A 250VAC contacts with screw terminals Output status LEDs Stackable ICSP 5x2 pin connector for in circuit programming with AVR ISP500 and AVR ISP MK2 or another compatible ICSP pro
29. slave address of the board W write mode should be 0 cccccccc command code should be 0x10 dddd bitmap of the output states i e bitO corresponds to REL1 bit1 to REL2 and so on 1 switches the relay ON 0 switches to OFF state P Stop condition Example To set REL1 and REL3 in pseudo code i2cStart Send start condition i2cSend 0xb0 This is 0x58 shifted to left one time and added 0 as W i2cSend 0x10 Command to set relays i2cSend 0x05 0x05 0b00000101 This way we will set REL1 and REL3 i2cClose Send stop condition Page 10 of 30 OLIMEXO 2015 MOD IO user s manual 2 6 2 Getting the state of optocoupler The board features four optoisolated inputs named IN1 IN2 IN3 and IN4 and their statuses can be read together with one command The command should have the following format FKK K FK FK ok ke ze ze se ok oe FK FK FK oe ok FK FK ze FK FK FK ale ale FK FK gt K ale FK FK ale gt K DK ale ale S aaaaaaaW cccccccc P S aaaaaaaR 0000dddd P FKK K se se ok ke ze ze se oe oe FK FK K se ok FK FK ze FK oe FK FK FK FK FK gt K oe ale FK K gt K FK ale ale where S start condition aaaaaaa slave address of the board W write mode should be 0 cccccccc command code should be 0x20 P Stop condition R read mode should be 1 dddd bitmap of the input states received from the MOD IO board i e bitO corresponds to IN1 bit1 to IN2 and so on 1 means that power i
30. velopment environment we used At some point you might decide to add own keywords and behavior that suits your project better than what we have done Of course you can decide to completely skip this part and use the board as a general purpose AVR board You can write own software or firmware from scratch 2 5 Connecting more than one MOD IO together If you need more than 4 relays or more than 4 optocouplers you might connect another MOD IO board since each board has both male and female UEXT connectors and the communication protocol is I2C it allows multiple devices on the same bus each addressed by a unique identifier You may plug the boards directly the UEXT FEMALE connector of the first MOD IO would plug in the UEXT MALE connector of the second MODIO You can connect more than two boards this way Note that if you want to use more than one MOD IO on the same I2C bus you would need to change the built in the firmware identifier Each board needs a unique address There is a command to change discussed in the next chapter 2 6 Default firmware description 2 6 Default firmware description The demo is built in each MOD IO board The source code might be found in the software section at the product page at our web site Direct link to the board s web page https www olimex com Products Modules IO MOD IO resources MOD IO pdf The archive with the sources contains a prebuilt binary which also might be used to restore the
31. ween two isolated circuits by using light MOD IO also has 4 analog inputs won a connector MOD IO comes with built in firmware which makes the usage of the board s peripherals much easier It uses a standard I2C communication and several commands are defined The source of the firmware is also available to the customer Customers have full access to the technical documentation of the board The software is released under General Purpose License and the board is considered open hardware all schematics and board design files are available to the customer under the Creative Commons Attribution ShareAlike 3 0 Unported License 1 3 Board variants A smaller variant of the MOD IO2 board is the MOD IO2 one It has 2 relays compared to the 4 of the MOD IO and uses Microchip s PIC16 microcontroller compared to the Atmel s ATmega16 MOD IO2 is also stackable and again comes with custom firmware for easier start It uses I2C for communication MOD IO2 is also a completely open design hardware files and firmware sources are available to the customer 1 4 Board version used in the manual Hardware revision A boards and resources were used while writing this document It is possible that they are outdated so it is always recommended to download the latest sources from the product page of the board https www olimex com Products Modules IO MOD IO open source hardware 1 5 Document organization Each section in this document covers a s
32. x20 c To read analog value of IN1 i2cset y f 2 0x58 0x30 i2cget y f 2 0x58 w To change address to 0x22 i2cset y f 2 0x58 OxFO 0x22 Page 15 of 30 MOD IO user s manual OLIMEXO 2015 MOD IO user s manual CHAPTER 3 MOD IO BOARD DESCRIPTION 3 Introduction to the chapter Here you get acquainted with the main parts of the board Note the names used on the board might differ from the names used below to describe them For the actual names check the MOD IO board itself 3 1 Layout top view The picture below shows the top side of the board and highlights the most important parts RST button PWR J PWR LED a 037 und e wed AIN 2 AVRISP ME C n DEDE 6 AIN 1 e UH GG UEXT FEMALE UEXT MALE JTAG EXT Page 16 of 30 OLIMEXO 2015 MOD IO user s manual CHAPTER 4 THE ATMEGA16A MICROCONTROLLER 4 Introduction to the chapter In this chapter is located the information about the heart of OLinuXino its microcontroller The information is a modified version of the datasheet provided by its manufacturers 4 1 The processor The features of the A10 processor according to the manufacturer Allwinner MOD IO uses an 8 bit AVR Microcontroller with 16K Bytes In System Programmable Flash with these features W High performance Low power AVR 8 bit Microcontroller m Advanced RISC Architecture 131 Powerful Instructions Most Single clock Cycle Execution 32x8 General Purpose Working Registers Fully Stat
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