RK3188-SOM-EVB user`s manual
Contents
1. Board revision Notable changes C Initial release of the board 7 3 Useful web links and purchase codes RK3188 SOM EVB s web page is here https www olimex com Products SOM RK3188 RK3188 SOM EVB The user s manual of RK3188 SOM might be found here https www olimex com Products SOM RK3188 RK3188 SOM resources RK3188 SOM UM pdf The web pages you can visit for more information about RK3188 SOM are https www olimex com Products SOM RK3188 RK3188 SOM and https www olimex com Products SOM RK3188 RK3188 SOM 4GB Wiki articles of the boards https www olimex com wiki RK3188 SOM and https www olimex com wiki RK3188 SOM EVB A place for general questions FAQ or friendly talk https www olimex com forum You can get the latest hardware updates at the GitHub page https github com OLIMEX SOM tree master RK3188 You may may join our IRC channel olimex freenode net http webchat freenode net channels olimex Page 30 of 34 OLIMEXO 2015 RK3188 SOM EVB user s manual 7 4 How to purchase You can purchase directly from our online shop or from any of our distributors Note that usually it might be 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 7 5 Order codes Short summary of the formal product names of the devices ment2. RK3188 SOM EVB Shield of peripherals USER S MANUAL Document revision C November 2015 Designed by OLIMEX Ltd 2015 lead free All boards produced by Olimex LTD are ROHS compliant OLIMEXO 2015 RK3188 SOM EVB user s manual DISCLAIMER 2015 Olimex Ltd OlimexG 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 The hardware design of RK3188 SOM EVB development board is considered open source hardware The source design files are published online and accessible by everyone The hardware designs of RK3188 SOM and RK3188 SOM 4GB development boards are considered intellectual property to Olimex Hardware schematics are shared with the customers However the board layout files are considered copyright material and would not be shared The software is released under GPL 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 contained in this document are given by OLIMEX in good faith However all warranti
3. S 40 Y OuMeEX OLIMEXO 2015 RK3188 SOM EVB user s manual 6 3 Physical dimensions Note that all dimensions are in mils 3875mil I2 T I T T T T T 2 e T T 2 T4 T 4 T2 4 2 2 2 T 8T 3T 2 2 T 4 2 oo M ininin inno uu n n uuu n u u u u n 4 nfu u u u n u u u u u u v u u w u u u u 4 uuu u w u w uu uju u u n u u n x PAPAE CON TERTIA RK3188_CON 6P102 RK3188_CON LCD p nonnan nooo BATTERY o open hardware RK3188 S0M RK3188 CON GPIO4 RK3188 CON 6PIO3 T T T T T T T T T T TT 2 ST T TT T T T T T 3 T DBOOBOBOOBgaagaaaaaagaauaaaaadagaadaagaadagaagaagaa L 125mil 1075mil 5450mil Page 29 of 34 OLIMEXO 2015 RK3188 SOM EVB user s manual CHAPTER 7 REVISION HISTORY AND SUPPORT 7 Introduction to the 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 Document revision Changes Modified page A 03 04 15 Initial manual release All Additional GPIO map 28 paoa Fixed numerous spelling mistakes All C 04 11 15 Added information about USB OTG 20 7 2 Board revision Remember to check the schematics and the board design files to compare the differences
4. what are the requirements to power RK3188 SOM EVB You need to provide 6V to 16V DC voltage to the power jack named PWR of RK3188 SOM EVB board The DC barrel jack has 2 0mm inner pin and 6 3mm hole More information about the exact component might be found here https www olimex com wiki PWRJACK Do not provide AC voltage to the RK3188 SOM EVB board Do not provide more than 16V of voltage to the RK3188 SOM EV B board The typical consumption of RK3188 SOM EVB RK3188 SOM is around 0 15A 10V but might reach peaks up to 0 25A 10V during initial boot These values were measured without anything else connected to the board e g no keyboard no mouse no LCD display etc For the European customers we also stock and sell basic power supply adapters compatible with Page 10 of 34 OLIMEXO 2015 RK3188 SOM EVB user s manual the power jack The board can be powered by a personal computer using the USB OTG connector However the USB standards limit the maximum power available at a personal computer s USB port Thus powering the board via the USB OTG port is not recommended Especially if you are using extra peripherals like LCD display keyboard mouse etc Note that it is normal that when the board is powered some integrated circuits might appear hotter than others This is perfectly normal for some electronic components for instance the voltage regulators and the main processor 3 4 Button functions RK3188 SOM EV
5. 4 3 480x272 Yes No Product page LCD OLinuXino 7 7 800x480 Yes Yes Product page LCD OLinuXino 7TS 7 800x480 Yes Yes Product page LCD OLinuXino 10 10 1 1024x600 Yes Yes Product page LCD OLinuXino 10TS 10 1 1024x600 Yes Yes Product page The displays whose names contain TS include a resistive touch screen component Each of the displays listed in the table above has a connector suitable for a cable that can be purchased from Olimex CABLE IDC40 15cm 15cm long cable suitable for 0 1 step connectors Product page Page 13 of 34 OLIMEXO 2015 RK3188 SOM EVB user s manual 3 6 Software support At the moment we provide ready to use Debian Linux images suitable for the NAND memory of the board or micro SD card We also provide instructions and sources of these releases These images might be downloaded for free and modified as the user wishes The latest images and updates are featured at the wiki article of the device https www olimex com wiki RK3188 SOM We usually try to provide extra details and best experiences with our products at our wordpress page http olimex wordpress com Another useful place is the Olimex forums where a lot of people share their experience and advice https www olimex com forum The official images are a constant work in progress newer releases are packed with better hardware support newer kernels and extra features You are more than welcome to send or share your suggestions and
6. 6 to 16 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 500mA of current Pin amp Signal 1 POWER INPIT 2 GND More info about the power supply can be found in chapter 4 of this manual Page 19 of 34 OLIMEXO 2015 RK3188 SOM EVB user s manual 5 4 USB OTG interface The USB OTG interface of RK3188 SOM EVB uses USB mini connector The USB OTG connector can be used to upgrade the Linux image on the NAND memory of the board if you have RK3188 SOM 4GB There are few requirements to establish a proper connection 1 A personal computer that would act as a host PC and would run the software suitable for upgrading You need also a suitable USB cable with mini USB connector to establish the hardware link between the host PC and the RK3188 SOM EVB board The software for upgrading under Windows is called Rockchip Batch Tool and you can download it at this location download Rockchip Batch Tool from our Google Drive 2 The host PC needs drivers to be able to recognize the board in bootloader mode The driver installer can be download from here download RK Driver Assistant from our Google Drive 3 The board needs to be in bootloader mode to be able to connect to the host PC In order to enter bootloader mode press and hold down the REC button and apply the power supply Release the REC
7. EVB it provides direct HDMI output and easier ways to connect peripherals to the board Generally the processor s features become easier to access It is highly recommended to use RK3188 SOM with RK3188 SOM EVB initially unless you have previous experience with SOM or OLinuXino boards manufactured by OLIMEX If you are not interested into implementing the RK3188 SOM design into your own production it might be a better idea to take a look at the OLinuXino boards like A20 OLinuXino MICRO or A20 OLiuXino LIME2 1 3 Features of RK3188 SOM EVB The product called RK3188 SOM EVB includes both RK3188 SOM EVB board of peripherals and RK3188 SOM main board The board of peripherals RK3188 SOM EVB has the following set of features RK3188 SOM 4GB matching connectors Power barrel jack 6V to 16V DC HDMI video output with a standard connector LCD video output on a 40 pin at 0 1 step connector compatible with Olimex LCD displays e 100Mb Ethernet interface with a connector 2x UEXT connectors USB OTG with power control and current limiter 4x USB HOST RIC with battery back up e 2 x GPIO connectors x 40 pin 0 1 step Power LED e Dimensions of the RK3188 SOM EVB part 5 45x3 35 138x85 mm Page 6 of 34 OLIMEXO 2015 RK3188 SOM EVB user s manual 1 4 Board versions used in the manual The documents follows the hardware layout of RK3188 SOM EV B board revisions C Different board revisions might ha
8. LCDO D3 E3 25 LCDO DA E4 26 LCD _D5 G6 27 LCDO D6 F5 28 LCDO D7 FA 29 LCDO HSYNC A1 30 LCDO VSYNC B1 31 LCDO CLK D2 32 LCDO DE D3 33 LCDO L R NC W11 34 LCDO U D NC AC7 35 GPIO3 D7 LCDO PWRE N22 36 GPIO3 D4 PWM1 R22 37 X AR1021 I 38 X AR1021 I 39 Y AR1021 I 40 Y AR1021 I Page 25 of 34 OLIMEXO 2015 RK3188 SOM EVB user s manual 5 10 RK3188 GPIOX connectors There are four male connectors located in the middle of the top side of RK3188 SOM EVB They have a smaller step 0 05 compared to the step of the EXT connectors 0 1 mentioned in the previous chapter 5 9 These connectors provide a way to attach the board with peripherals to the main board RK3188 SOM The manual and schematic of the main board RK3188 SOM might help you identify the main function of these interface pins The hardware connections between the RK3188 and RK3188 SOM EVB are as follows 1 RK SOM s GPIO 1 connects to RK3188 SOM EV B s RK3188 GPIO 1 2 RK SOM s GPIO 2 connects to RK3188 SOM EVB s RK3188 GPIO 2 3 RK SOM s GPIO 3 connects to RK3188 SOM EVB s RK3188 GPIO 3 4 RK SOM s GPIO 4 connects to RK3188 SOM EV B s RK3188 GPIO 4 5 RK SOM s LCD CON connects to RK3188 SOM EV B s LCD IMPORTANT the RK3188 GPIOX connectors are very fragile if you attempt to disconnect the RK3188 SOM board by pulling only one side out it might break Furthermore you might bend the pins or the header Use pliers or other suitable object to disconnect t
9. Olimex and maintained by Olimex and the Linux community These images are typically available at the wiki articles of the boards The peripheral part of the SOM design is considered Open Source HardWare OSHW and the customer has access to the board source files that we used to manufacture it The part of the design that has the main microcontroller is considered proprietary design and design files would not be Page 5 of 34 OLIMEXO 2015 RK3188 SOM EVB user s manual shared If you are looking for open source design of the processors used please check the OLinuXino boards OLinuXino board designs are fully open source but harder to implement in own solutions and require more of a hardware experience to do so Nevertheless OLinuXino boards are pretty good choice for evaluating the capabilities of the embedded processors 1 2 Target market of the board RK3188 SOM EVB is typically used altogether with RK3188 SOM As mentioned in the previous chapter the board is meant to serve as an example that helps the customer in creating custom board of peripherals In that case the board s target market is suitable for embedded programming enthusiasts Linux and Android gadget fans they can just use the board as a media center or fully functional Linux PC for instance and also professionals since its low cost makes it very good solution for application orientated embedded systems The reason for this alteration is the additional hardware that RK3188 SOM
10. button Connect the USB cable to the mini USB connector Refer to chapter 3 3 Preparing the OS to boot of RK3188 SOM s user s manual for more details USB OTG connector Pin 4 Signal name Header pint RK3188 pin 1 5V_OTG_PWR RK3188 GPIO4 1 POWER CIRCUIT 2 OTG_DM RK3188 GPIO4 8 AB14 3 OTG_DP RK3188 GPIO4 6 AC14 4 OTG ID RK3188 GPIO4 3 Y17 5 GND Any RK3188 GPIOX 2 POWER CIRCUIT The connector case is also grounded The schematic might be seen below OTG_VBUS GPI02_D7 USB OTG DRV USB_OTG USB OTG SY6280 U10 The USB OTG features Low Loss Power Distribution Switch SY6280 which protects the board in case the devices you have plugged to the USB OTG attempt to draw more current than 523mA Page 20 of 34 OLIMEXO 2015 RK3188 SOM EVB user s manual combined The maximum current available on the 5V USB OTG is exactly 523mA The SY6280 responsible for the USB OTG is enabled by GPIO2 D7 USB OTG DRV processor pin F22 thus the USB OTG is also controlled by the same signal There are two parts of a successful OTG device host mode switch and usage hardware part and software part The hardware part is the cable to use the OTG as a host you would need a mini USB to USB adapter cable Do not confuse micro and mini USB To use it as a device simply use mini USB to mini USB cable The software part is loading a kernel module responsible for the behavior
11. 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 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 34 of 34
12. check the USB cable 4 The board might enter sleep mode very fast especially if the Android was turned off without the Quick Boot mode being ticked on Try pressing or holding down the PWR button for a couple of seconds to wake it up Q How do I write the Linux image to a micro SD card to use with my RK3188 board A First visit the wiki article for the board and download the archive with the image Then write the Linux image to a microSD card Under Windows we use Win32 Disk Imager http sourceforge net projects win32diskimager 1 Download the latest official image suitable for a microSD card from the chapter above 2 Download Win32 Disk Imager from this link 3 Insert card in your microSD card reader 4 Launch the software 5 Point the software to the image 6 Click write Under Linux you can write the image image to the card with dd utility This is how it can be done Let s say the name of the image is debian 2g img It would be downloaded to the microSD card connected to a Linux machine using one of the following commands dd bs 4M oflag sync if debian 2g img of dev sdX or cp debian 2g img dev sdX where X is the uSD card The tips above can also be used to prepare a microSD card with an Android image suitable for a microSD card Page 32 of 34 OLIMEXO 2015 RK3188 SOM EVB user s manual Q How to edit board configurations and definitions in the official Debian Linux A The Debian Linux support fo
13. found in the consequent sub chapters Note that not all interface options are available for all images The official Debian image should give you the most possible options of interfacing the board Using HDMI LCD CON or LAN might require additional configurations Furthermore it is possible to corrupt the output settings over those interfaces and thus lose the output In such cases you can always use the serial cable USB SERIAL CABLE F as a reliable way to establish connection to the board 3 5 1 HDMI monitor All official for RK3188 SOM have HDMI output enabled by default The board would work out of the box with a native HDMI monitor if you use RK3188 SOM RK3188 SOM EVB altogether with one of the official Debian images from the board s wiki article Make sure to use a tested HMDI cable The default HDMI resolution in the official images is 720p 1280x720p at 60Hz In order to change that setting the video output on the LCD display you would need to run a configuration script if you use Debian Linux or download a suitable image if you use Android More information about the video output settings and the usage of video settings script might be found in RK3188 SOM s user s manual 3 7 Changing the default image resolution Page 12 of 34 OLIMEXO 2015 RK3188 SOM EVB user s manual 3 5 2 SSH via Ethernet By default the board IP address is 192 168 1 254 This allows you to connect to the board using an SSH client for ex
14. ideas at our e mail the public forums or irc channel We would attempt to help in almost every case We listen to the feedback and if the majority of users suggest a software change or update we try to implement such Customer feedback is very important for the overall state of the software support However do not expect full Linux or Android software support We can share our experience We can give you full details for things we have tried We can point you to a resource or a guide We can give you general directions to solving a specific problem or places to look for more information However we won t install a piece of software for you or write custom program for you We won t provide a specific software solution to a specific software problem Page 14 of 34 OLIMEXO 2015 RK3188 SOM EVB user s manual CHAPTER 4 CONTROL CIRCUITY 4 Introduction to the chapter Here you can find information about reset circuit and quartz crystals locations on the RK3188 SOM EVB the power supply circuit is also briefly discussed For more information on the control circuitry of the RK3188 SOM RK3188 SOM EVB make sure to also check on the documentation available for RK3188 SOM 4 1 Reset The board doesn t extend the reset features of the RK3188 SOM The reset is handled by the RK3188 SOM 4 2 Clocks There are two external quartz crystals in the RK3188 SOM EVB design they are named Q1 and Q2 Q1 is 32 768KHZ 6pF crystal connected to the PCF856
15. might be said for a serial cable connected between a PC and the board s DEBUG port In rare cases different polarity might cause hardware damage to the board 3 2 Requirements In order to set up the RK3188 SOM EVB board optimally one or more additional items may be needed They might be generally placed in two 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 RK3188 SOM or RK3188 SOM 4GB the main board featuring the RK3188 processor AN RK3188 SOM 4GB BOARD IS INCLUDED IN RK3188 SOM EVB PRODUCT BY DEFAULT NO NEED TO ORDER IT SEPARATELY External power supply unit capable of providing voltage between 6V and 16V with proper connector RK3188 SOM EVB has a female DC barrel jack suitable for 6 16V power supply Output device and hardware to connect to the output device there are different ways to interact with the board refer to chapter 3 5 Accessing the board for more information Page 9 of 34 OLIMEXO 2015 RK3188 SOM EVB user s manual Recommended items SD card with compatible image by default the RK3188 SOM 4GB board included in the package can boot Debian Linux from the NAND memory However if you are a beginner you might h
16. of 0 1 inch 2 54 mm The UEXT connectors are typically used as an interface for the Olimex s UEXT modules usually boards with MOD prefix in their commercial names The general layout of every UEXT connector follows the picture below GND RXD SDA MOSI SSEL 1 3 7 9 3 8V TXD SCL MISO SCK For more information on UEXT please visit https www olimex com Products Modules UEXT resources UEXT pdf RK3188 SOM EVB has two UEXT connectors Hardware wise each of them has its own UART own I2C and own SPI The pinout of the connectors might be found in the following sub chapters 5 2 1 UEXTI UEXT1 nests UARTO I2CO and SPIO interfaces UEXT1 connector pinout Pin Signal Header pin RK3188 Pin Signal Header pin ones name pin name pin RK3188 GPIO2 1 POWER POWER 1 3 3V LCD CON 2 CIRCUIT 2 GND Any RK3188 GPIOX 2 CIRCUIT GPIO1 A1 GPIO1 A0 3 UARTO TX RK3188 GPIO4 38 L19 4 UARTO RX RK3188 GPIOA 40 L20 GPIO1 D1 GPIO1 D0 5 I2CO SCL RK3188 GPIO3 33 G21 6 I2CO SDA RK3188 GPIO3 31 G22 GPIO1 A4 i GPIO1 A5 7 SPIO MISO RK3188 GPIO4 32 AA12 8 SPIO MOSI RK3188 GPIO4 30 Y16 GPIO1 A6 GPIO1 A7 9 SPIO SCK RK3188 GPIO4 28 AA13 10 SPIO CSNO RK3188 GPIO4 26 AB21 The first column represents the pin number of the signal in the UEXT connector The second column has the signal name as per hardware design files and schematic The column named
17. of the board to interact with such a display They allow the user to attach additional hardware check readings or perform hardware debug Important you need additional 40PIN ribbon cable to connect an Olimex display and the LCD_CON The LCD connector is suitable for a number of Olimex displays and touchscreen panels with different native resolution the smallest available is the 4 3 one called LCD OLinuXino 4 3TS with native screen resolution of 480x272 through the 7 one named LCD OlinuXino 7TS with 800x480 to the 1024x600 10 1 LCD OLinuXino 10TS Full list of recommended displays for the board might be found in chapter 3 5 3 LCD display Please note that the smallest display 4 3 480x272 is not suitable for the official Android images we provide Most of the signals of LCD are routed from LCD CON The touch screen is handled by the Microchip s resistive touch screen controller AR1021 LCD connector GPIO pin Signal name Processor pin GPIO pin Signal name Processor pin 1 5V POWER CIRCUIT 2 GND POWER CIRCUIT 3 3 3V POWER CIRCUIT 4 GND POWER CIRCUIT 5 LCDO D16 H5 6 LCDO D17 H4 7 LCDO D18 H3 8 LCDO D19 H2 9 LCDO D20 H1 10 LCDO D21 K1 11 LCDO D22 J3 12 LCDO D23 J2 13 LCDO D8 F3 14 LCDO D9 F2 15 LCDO D10 G5 16 LCDO D11 G4 17 LCD _D12 G3 18 LCD _D13 G2 19 LCDO D14 G1 20 LCDO D15 H6 21 LCDO DO DO 22 LCDO D1 E1 23 LCDO D2 E2 24
18. of the board while in device mode If such software is not enabled or missing in the official distribution you would need respectively either to load the module or rebuild the kernel to enable the module There are several modules that you might need depending on what your goals are 5 5 USB HOST connectors There are four USB HOST connectors All of them are handled by the built in USB 2 0 hub GL850G HHGXX The hub itself uses USB HOST DM and USB HOST DP signals that go to RK3188 GPIOA pins 10 and 12 respectively From there the signal lines go the RK3188 SOM and to the RK3188 itelf at pins AB16 and AC14 All of these USB HOST slots are connected to a single low loss power distribution switch SY6280 which protects the board in case the devices you have plugged to each level USB HOST try to draw more than the allowed current The total current available for all of the hosts is 1000mA The GND is common for all four levels of the USB HOST 5 6 Ethernet connector The LAN connectivity is handled by Microchip s LAN8710A EZC The LAN8710A is a low power 10BASE T 100BASE TX physical layer PHY transceiver with variable I O voltage that is compliant with the IEEE 802 3 2005 standards The Ethernet connector is grounded according to the standard check GND1 and GND2 lines on the schematics If you use Linux then the Ethernet connector might be used for SSH connection to the board If you lack any other option for debugging it might be ha
19. the whole repository as zip without having a GitHub account 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 27 of 34 OLIMEXO 2015 6 2 GPIO map RK3188 SOM EVB PINOUT REFERENCE www OLIMEX com Each of the connectors listed below has 0 1 step between the pins 1 3 3V 2 GPIO1 A1 UARTO TX 3 GPIO1 D1 I2CO0 SCL 4 GPIO1 A4 SPIO MISO 5 GPIO1 A6 SPIO SCK 1 3 3V 3 GPIO1 B3 UART3 TX 5 GPIO1 D7 I2C4 SCL 7 GPI0 _D4 SPI1_MISO 9 GPI0 _D6 SPI1_CLK 1 VCC_1 8 3 ADC INO 5 NWP 7 NDQO 9 NDQ1 11 NDQ2 13 NDQ3 15 NDQ4 17 NDQ5 19 NDQ6 21 NDQ7 23 GPIOO DO FLASH DQS 25 GPIOO D1 FLASH CSNI 3 27 GPIOO D2 FLASH CSN2 Ss 31 GPIO1 CO 33 GPIO1 C4 35 GPIO1 B4 37 GPIO1 B5 39 GPIO1 B7 SDO uj IN os Z E 2 GND N 4 GPIO1 AO UARTO RX hk 6 GPIO1 DO I2CO SDA S 8 GPIO1_A5 SPI _MOSI s 10 GPIO1 A7 SPIO CSNO 2 GND 4 GPIO1 B2 UART3 RX 6 GPIO
20. 1 D6 I2C4 SDA N 8 GPIOO D5 SPI1 MOSI 10 GPIOO D7 SPI1 CSNO N 2 GND A ADC IN2 WW 6 NRBO N 8 NRE 10 NCLE WS 12 NALE 14 NWE N 16 NCEO 18 GPI0 _B4 LED1 W 20 GPIOO B6 LED2 22 GPIO3 D5 PWM2 S 24 GPIO3 D6 N 26 GPIOO CO S 28 GPIOO C1 S 30 GPIOO C2 32 GPIO0 C3 S 34 GPIOO C4 36 GPIOO C5 38 GPIOO C6 40 GPIOO C7 Page 28 of 34 RK3188 SOM EVB user s manual 1 3 3V 3 3 3V 5 GPIOO A1 7 GPIOO A5 9 GPIOO A6 11 GPIOO A7 13 CIF DO 15 CIF Di 17 CIF D2 19 CIF D3 21 CIF DA 23 CIF D5 25 CIF D6 27 CIF D7 29 CIF D8 31 CIF D9 33 CIF D10 SDA d 35 GPIO2 DA 37 GPIO3 A0 39 45V 1 45V 3 3 3V 5 LCDO D16 7 LCDO D18 9 LCDO D20 11 LCDO D22 13 LCDO D8 15 LCDO D10 17 LCD _D12 19 LCDO D14 21 LCDO0 DO 23 LCD0 D2 25 LCDO DA 27 LCDO D6 29 LCDO HSYNC 31 LCDO CLK 33 LCDO L R 35 GPIO3 D7 LCDO PWRE Sis 37 X 39 Y 2 GND WS 4 RESET 6 GPIOO BO 43 8 GPIOO B1 10 GPIOO B2 k 12 GPIOO B7 M 14 GPIO1 A2 k 16 GPIO1 A3 Ns 18 CIF HREF k 20 CIF CLKI M 22 CIF_CLKO RS 24 CIF_VSYNC d 26 CIF_D15 28 CIF D14 30 CIF D13 I 32 CIF D12 34 CIF D11 SCL t 36 GPIO2 D5 38 GPIO3 B1 N 40 GND 2 GND RP 4 GND S 6 LCDO D17 RP 8 LCDO D19 4 10 LCD _D21 12 LCD _D23 JF 14 LCD _D9 16 LCDO D11 JF 18 LCD _D13 Ny 20 LCDO D15 22 LCD _D1 24 LCD _D3 WW 26 LCD _D5 S 28 LCDO D7 30 LCDO VSYNC 32 LCDO DE 34 LCDO U D S 36 GPI03_D4 PWM1 38 X
21. 3T the RTC MODULE part of the design Q2 is 12 000MHz HC 49SM SMD 20ppm 20pF crystal connected to the USB hub GL850G 4 3 Power supply circuit RK3188 SOM EVB extends the power supply options over RK3188 SOM It provides a barrel jack for external powering There is also a USB OTG interface mini USB connector that can be used to power the board from a personal computer The three possible ways to power RK3188 SOM EVB providing 6 16 V DC at the power jack providing 5V DC at pin 39 of EXT2 connector using the USB OTG interface to provide 5V Note that the coin battery connector is intended to keep only the RTC alive You can t power the whole board using a coin battery The recommended way of powering the board is via the PWR jack with 6 16V DC with a power of 5W e g 6Vx0 8A 16Vx0 3A This will make the board fully powered and able to supply all the peripherals connected to it Important Not all USB ports would be able to provide enough power for the board Try using another USB port USB hub or a cable of higher quality Do not rely on the USB OTG as a single power source The power supply is handled mainly by ACT8846 power management system Page 15 of 34 OLIMEXO 2015 RK3188 SOM EVB user s manual The consumption of the combination RK3188 SOM EVB RK3188 SOM 4GB is between 0 10A and 0 15A when RK3188 SOM EVB is connected to a 10V voltage source provided at the board s PWR jack The current consumed might have
22. B does not provide extra buttons over the RK3188 SOM board The three buttons located on the RK3188 SOM can also be used while the board is mounted over RK3188 SOM EVB These buttons are POWER power button used to perform software turn off software turn on has to be held down for at least 5 seconds to perform each action REC recovery button used to wake up the board from sleep RST reset button used for hardware reset of the board before using it please refer to the note below It is always recommended to perform a soft turn off of the board If that is not possible then please hold POWER button down for a few seconds to turn off the board Then you are free to remove the power supply If you disconnect the power supply either the USB the battery or the power jack before turning off the board you may corrupt your SD card If your board has NAND memory you can corrupt the image located on the NAND memory 3 5 Accessing the board The typical and recommended way of interacting with RK3188 SOM EV B board is via a serial cable connected between the RK3188 SOM s UART DEBUG header and a personal computer You would probably need a cable suitable for such a connection due to the fact that most personal computers lack a serial port nowadays Even if you have serial port you should respect the CMOS levels of the board which are incompatible with the TTL levels of your computer We distribute a ready to use plug and p
23. Header pin shows the exact header pin where the signal might be found The RK3188 pin column shows where the signal connects with the Rockchip s RK3188 processor this can be tracked in the RK3188 SOM s schematic starting from the header Page 18 of 34 OLIMEXO 2015 RK3188 SOM EVB user s manual 5 2 2 UEXT2 UEXT2 nests UART3 I2C4 and SPI1 interfaces UEXT2 connector pinout Pint signal Header pin tolo Pin Signal Header pint RUE name pin name pin Bac DIE CN 3 esed RK3188 GPIO3 11 T22 4 heen RK3188 GPIO3 9 U21 5 CUM RK3188 GPIO2 40 AA15 6 Wed RK3188 GPIO2 39 AC11 4 a RK3188 GPI04 33 U23 8 E RK3188 GPIO4 35 R21 9 M He RK3188 GPIO4 37 T21 10 Bere RK3188 GPIO4 39 T20 The first column represents the pin number of the signal in the UEXT connector The second column has the signal name as per hardware design files and schematic The column named Header pin shows the exact header pin where the signal might be found The RK3188 pin column shows where the signal connects with the Rockchip s RK3188 processor this can be tracked in the RK3188 SOM s schematic starting from the header 5 3 PWR jack The power jack used is the typical one used by Olimex in most of our products the DC barrel jack has 2 0mm inner pin and 6 3mm hole More information about the exact component might be found here https www olimex com wiki PWRJACK You should provide
24. IOO C3 Y23 33 GPIO1 CA AB13 34 GPIOO C4 AB23 35 GPIO1 B4 T23 36 GPIOO C5 V21 37 GPIO1 B5 P21 38 GPIOO C6 V19 39 GPIO1 B7 SDO AB12 40 GPIOO C7 W23 Page 23 of 34 OLIMEXO 2015 5 8 2 EXT 2 40pin connector RK3188 SOM EVB user s manual At the EXT 2 you can find the camera signals Most of the signals of EXT 2 are routed from RK3188 GPIO1 Pin 39 can be used to power the board directly by providing regulated 5V of voltage EXT2 connector GPIO pin Signal name Processor pint GPIO pin Signal name Processor pin 1 3 3V POWER CIRCUIT 2 GND POWER CIRCUIT 3 3 3V POWER CIRCUIT 4 RESET AC5 5 GPIOO A1 Y6 6 GPIOO BO W8 7 GPIOO A5 W6 8 GPIOO B1 AA7 9 GPIOO A6 W11 10 GPIOO B2 AB6 11 GPIOO A7 AC7 12 GPIOO B7 AA11 13 CIF DO AC2 14 GPIO1 A2 L21 15 CIF D1 AC1 16 GPIO1 A3 L23 17 CIF D2 AB3 18 CIF HREF AB2 19 CIF D3 W1 20 CIF CLKI V2 21 CIF_D4 W2 22 CIF_CLKO Y5 23 CIF_D5 W3 24 CIF VSYNC AA3 25 CIF D6 VA 26 CIF D15 AB1 27 CIF D7 Y3 28 CIF D14 AA2 29 CIF_D8 YA 30 CIF D13 Y2 31 CIF D9 WA 32 CIF D12 Y1 33 CIF D10 SDA AA4 34 CIF D11 SCL ABA 35 GPIO2 DA 14 36 GPIO2 D5 U3 37 GPIO3 A0 24 38 GPIO3 B1 M22 39 5V POWER CIRCUIT 40 GND POWER CIRCUIT Page 24 of 34 OLIMEXO 2015 5 9 LCD 40pin connector RK3188 SOM EVB user s manual The LCD pins are led out on a separate 40pin connecter for the ease of connecting an LCD We have tested the ability
25. ND TE Muy E I GPIO2 D3 LCD1 USYNC 64 3 30 RB2 10k 12 YN M HIIS EE TTL M SS Tan NAGCLamPas2ip HCE O agl GPIO1 C1 I2S0 SCLK Z SCK MCLK 5 R50 2 21 tilg E I GPI01 C2 12S0 LRCK RX Z28 RS rupes cen te HCEC ucc if nro Lad ase 59 C3 iso I GP101_C3 1250_LRCK_TX 220 R47 f a Eom E 46 228 R48 HSCL HSCL 2 ML 0011 9 HSDR ashy lg i GP101 C5 12S80_SDO shee pesee as 22R R45 HSDA HSD amp ca IN2 0UT2 7 suc v ecoa qal s i 2 252 upp Ht HHPD HHPD 5 wa outa L6 TEEL FSHDO39 ashy 5 GPIO1 B6 SPDIF TX x 1283 SPDIF REXT 20 10k R42 ET GNO GNO 8 HHPD 19 I 3300 Ar rA 10kL R40 f E 1 I ePI01_p5 12 2_scL_2 3 O 12 peso PI cl N amp KRCLRHPOSZ4P I 9s GPI01_D4 12C2_SDA 11 PESDA INT EC GPIO2 D6 HDMI INT AS l 3 3U Oo 2 2k EEM t R38 10k 32 PCADR SYSRSTN 33 GPIO3_B2 HDMI_RST l l T IT66121FN a ese O3 30 l pL 3 AE ee IOI Le SS PI E A E E AA m K A PE E AIE EAA AE el 5 8 EXT connectors There are two GPIO connectors at the top side of RK3188 SOM EVB named EXT1 and EXT2 short from EXTernal1 and EXTernal2 They ease the access to some of the free processor s pins Each of the connectors has two rows of male pins at 0 1 step Page 22 of 34 OLIMEXO 2015 RK3188 SOM EVB user s manual Below you would find tables with the signal at each pin To understand better what each processor pin does it might be a good idea to refer to the datasheet of the RK3188 processor The schematic of the main board RK3188 SOM might also he
26. NLY FOR RK3188 SOM RK3188 SOM 4GB AND RK3188 SOM EVB RESPECTIVELY Page 2 of 34 OLIMEXO 2015 RK3188 SOM EVB user s manual Table of Contents DIS ES DRRRReSREMPREERRERERRRERRRRERRMS 2 CHAPTER 1I OVERVIEW aoi assists eaea LE ce cou DM aa aeaa 5 1 Introduction HO BIN C ML Kt 5 1 2 Target market of the Da sossisesiecissccssssnssesssesnssneiorsassacossetsscisstonsdorssendioraisiocsreescouasvesvansuabinns 6 1 3 Features of RECTHIBB SOMEEYDB unie bi ub orbi edo bi EE M Ee erbe VR Pe cia i Go cb ERo dE ual dien E due 6 1 4 Board versions used in the manwal eee eene ono noo noon oen noon atate uoo eonosa 7 1 5 Doc ment orgamizati O tRRR 7 CHAPTER 2 EP Od eer ener rere eee es oT eer 8 2 1 Board layout top VIEW ssissssicscscsiascsvessscsusvsnissacesessveneseacussocsssseuunesteaceoessssscuasssecunesss airia 8 CHAPTER 3 SETTING UP THE RK3188 SOM EVB BOARD cccccsssseeees 9 3 T trod ction to the Chapter creision enc a as aaa 9 3 1 Electrostatic and electrical polarity warning eee eere eere eerte n nnne 9 ENABLi ttai a LE RR RR aiia aksarisi sies RR 9 3 3 Powerin DORE Gh E L E E E taiwactsbassouSSacaesasues 10 RESEARCH 12 3S2 SSH VIA DLA Vols el tet ETE EDITRICE REINES 13 3 53 LCD Gis Plays RENDERE 13 3 6 SO PWAFE SUDDOED ua tw bci d o Lia uta ch reco bulk o o A bU C CI fai avia do Ru Rud CUu 14 CHAP
27. NNECTOR DC POWER JACK 6 16 V GND PINHOLE EXT1 CONNECTOR POWER LED Page 8 of 34 OLIMEXO 2015 RK3188 SOM EVB user s manual CHAPTER 3 SETTING UP THE RK3188 SOM EVB BOARD 3 Introduction to the chapter This section helps you set up the SOM 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 3 1 Electrostatic and electrical polarity warning The RK3188 SOM EVB board 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 elements Ensure that your development board gets attached to properly working hardware For example it is common for cheap HDMI monitors to lack grounding Avoid TVs which have no grounding on their power supply cable If you can t avoid them try to add the grounding yourself If you connect other electrical devices to the SOM board make sure that they have equal electrical polarity For example when you connect an HDMI cable between a TV and the RK3188 SOM EVB board it is a good idea to have them both connected to the same electrical source to the same utility power socket This
28. Pus ee E cbe e eR o cose cu E ve ac epa Sese CE cese Eb doge ea EE Pu E Da uaa 26 6 Tujeoduciton t th CARE ois icis decli te rael D o Sek e n EE REEL MUI S Ee ERA EER HEAR ERR LXe RODA GRE 27 LL Bale SCHEMA A E EE E A ERE 27 rA Diaa tothe chapter aione enos eaa een aaaea 50 00 9 0000000 002 9 stolons 30 rA Bann BQA4 ID mERRRRERNRRRRRDERIRRNRRCRRERRRENCORERRRERRNCDGESRRENS 30 7 2 Board FOVISION oci ea eae ie aede ed Le qe Duae a vae ed a v vae d YR Le v YER d o LR EET OE LR E EV Re Roo 3 uda tu a ww dde 30 Page 4 of 34 OLIMEXO 2015 RK3188 SOM EVB user s manual CHAPTER 1 OVERVIEW 1 Introduction to the chapter Thank you for choosing this expansion board from Olimex This document provides a user s guide for the RK3188 SOM EVB 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 RK3188 SOM EVB lacks a main processor That is why it is typically used together with RK3188 SOM RK3188 SOM EVB is a hardware extension to another Olimex board RK3188 SOM This extension board provides most of connectors and peripherals needed for a full evaluation of the RK3188 processor RK3188 SOM itself features the main processor and enables code development of applications running on the RK3188 microcontroller manufactured by Rockchip Technology from China In our web shop the product named RK3188 SOM EVPB includes two items RK3188
29. SOM 4GB and RK3188 SOM EVB RK3188 SOM EVB board is an open source open hardware project and all documentation is available to the customer The hardware design of RK3188 SOM development board is considered intellectual property to Olimex The hardware layout design files are considered copyright material and would not be distributed The original schematics however are distributed in popular file format The software support for both boards is open source and released under GPL license 1 1 Introduction to SOM System On a Module OLIMEX System on Module SOM boards are powerful Linux capable boards They follow a low cost modular design which allows rapid product development Each of these boards has two parts a main part which nests the processor the memory and the power control unit and the peripheral part which contains the USB ports the video output and most of the connectors SOM designs are targeted at customers who want to apply custom modifications and own solutions based on a specific processor without having to deal with multi layer PCBs with controlled impedance and BGA assembly This makes it possible to create simple boards that might be manufactured by your local board manufacturer containing only the peripherals you need with the dimensions and shape suitable for your specific solution Both the main part and the peripheral part of the SOM system have support in the official Android and Debian images distributed by
30. TER 4 CONTROL CIBCULETY i uscinsbi ceri iss esed eska reed ago riu vag ao Sad swa b dp P Exb sea 15 4 Introduction to the chapter iu oca cova soe ce vaio ea ee va eaa ena eee e va eoo en vaca c va eae co a eee v va eee eausa pae 15 5 2 UEA T CODBPCEOES oic iori vro suere a das Sede teasers Ec oa oes o a io sors o coa o dus vea sioe s e Ua edo VE es Eoo cU god i Tes uo Vo eb eee eu 18 SO UEXEI S eas nt heu A DM DE MM MM UE 18 82 2 MEX E ete uo e ath lo E E E E 19 5 3 WR 1361 iuccc529365 1292102 522516590223122 822 8 2900022020000 4 00 00200 20900221000 000810 00 002 000 90v 1 0o dd Ted lvo Opa e EON TUEIS 19 5 4 WES MG 3 WORE 10 Orcum TRTIC RR E ERA 20 Deo USB HOST COMMCCIONS iiit iei eio cois se a aaa a 21 DG Be conne ClO ecc ios teorica vel dba Vue Et RED ULL US DM LIVES EE Ro aubaicad eee Le M cuu da 21 D 7 EHDMBECODIIGCEUE iiia iioc oen A sa acu Po ease aaa Posuv Ee ade A aca avene Lean E 22 o EATON OU RITTER DEED NIB UE IBID IETENIDUT 22 5 8 1 EX T T d pin COHDGCI F iiis s sio eeh cc eo tinso cases dus uos eos a Sara e S e Ras snae ce EN UxURG tee asa nE Loa so CR LS NM a sI USO ei 23 5 8 2 EXT 2 40pin OTM COLO WT IER E E A T EEEE 24 Page 3 of 34 OLIMEXO 2015 RK3188 SOM EVB user s manual 5 10 RK3188 GPIOX connectors eene eee eee een nn rere nn eee nn eee eno eee e een e eee esae tees see eee eooe 26 5 1T SUM Per descrIDUQIH iiec ceci ecce eoe oco a
31. ample telnet or puTTY then you have to use this address You can change this address from etc network interfaces file Note that for internet connection you have to set your gateway address in etc network interfaces file and you have to set your DNS server in etc resolv conf for example nameserver 192 168 1 1 The port used for the connection the default one port 22 3 5 3 LCD display One of the ways to interact with the board is via an external display with or without touchscreen component The 40 pin male connector LCD CON has the typical 0 1 pin step All Olimex displays have corresponding 40 pin male connector You would only need a 0 1 female female cable for the hardware connection In order to get the video output on the LCD display you might need either to run at least once a configuration script if you use Debian Linux or download a suitable image if you use Android Video output settings are hard coded in Android images More information about the video output settings and the usage of video settings script might be found in RK3188 SOM s user s manual 3 7 Changing the default image resolution The displays recommended for the board at the moment of writing might be found in the table below Display name Size of Native Official Official Link to product display resolution Debian image Android image page in inches in pixels support support LCD OlinuXino 4 3TS
32. are 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 their 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
33. ave trouble uploading images on the NAND memory in case you want to update or repair the image located there It might be quite easier to write an image to a micro SD card Ideally the card would be class 10 with at least AGB of storage Official Debian images are available at the wiki article for the board Additional items Small heatsink for the processor during long video playbacks the RK3188 processor might heat up Ethernet cable for wired Ethernet Some of suggested items can be purchased from Olimex for instance SY0612E reliable power supply adapter 50Hz for EU 12V 0 5A SY0612E CHINA cheaper power supply adapter 50Hz for EU 12V 0 5A USB SERIAL CABLE F female USB serial console cable provides the easiest way of debugging LCD OLINUXINO 4 3TS low cost 4 3 LCD display with touchscreen component 480x272 LCD OLINUXINO 7TS low cost 7 LCD display with optional touchscreen component 800x480 LCD OLINUXINO 10TS low cost 10 LCD display with optional touchscreen component 1024x600 CABLE IDC40 15cm a cable used to connect an LCD display to the board compatible with Olimex made LCD displays 3 3 Powering the board RK3188 SOM gets evaluated when mounted atop RK3188 SOM EVB In this case the former is powered via the latter The power line altogether with a number of other important processor lines is transferred via the 40 pin headers RK3188 SOM receives power from RK3188 SOM EVB but
34. es 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 RK3188 SOM RK3188 SOM 4GB AND RK3188 SOM EVB THEY ARE CONSIDERED SUITABLE O
35. he connectors carefully 5 11 Jumper description Please note that only jumper on the board is SMT type It is typical used for current measuring disconnect the jumper and place the ampermeter between the two pads If you feel insecure of your soldering cutting technique it is better not to try to adjust its position Board jumper Jumper name Type Default position Function SV E SMT CLOSED Used for test measurements of voltage and amperage 5 12 Additional hardware components The components below are mounted on the RK3188 SOM EVB but are not discussed above They are listed here for completeness PCF8563T a CMOS Real Time Clock RTC and calendar optimized for low power consumption Used for time keeping Uses the signals I2C1_SCL I2C1_SDA RTC_INIT and RTC_CLKOUT I2C Slave Address 0xA3 read 0xA2 write Can be kept alive in case of power loss using a coin battery The battery has a connector on the RK3188 SOM EVB 3 0V BAT connector PWR LED turns on upon powering the board there is also PWR LED on RK3188 SOM Page 26 of 34 OLIMEXO 2015 RK3188 SOM EVB user s manual CHAPTER 6 SCHEMATICS 6 Introduction to the chapter In this chapter is located information about the schematics describing logically and physically RK3188 SOM EVB 6 1 Eagle schematic RK3188 SOM EVB schematics may be found it our GitHub repository https github com OLIMEX SOM tree master RK3188 You can download
36. ioned in this document RK3188 SOM the target of this manual RK3188 SOM EVB RK3188 SOM 4GB a shield with all important peripherals HDMI interface LCD connector 100Mb Ethernet with connector USB OTG 4 x USB hosts 0 1 GPIO connectors etc USB SERIAL CABLE F USB serial console cable female RK3188 SOM DEBIAN SD a tested class 10 micro SD card with the latest by the time of leaving the Olimex facilities official Debian Linux release LCD OLINUXINO 4 3TS low cost 4 3 LCD display with touchscreen component 480x272 LCD OLINUXINO 7TS low cost 7 LCD display with optional touchscreen component 800x480 LCD OLINUXINO 10TS low cost 10 LCD display with optional touchscreen component 1024x600 ALUMINIUM HEATSINK 20x20x6MM heatsink radiator for better processor heat dissipation Page 31 of 34 OLIMEXO 2015 RK3188 SOM EVB user s manual 7 6 Frequently asked questions Q I powered my board and then nothing happened What might be the problem A This might be due to a number of reasons but it is recommended to try the following 1 Download latest official Debian image from our wiki and upload it to an SD card again There are instructions how to do it in the other questions below Try if the board works now 2 Check if your power supply provides enough current try with different better power supply 3 Check the USB hub you are using plug the USB cable directly to the back of your personal computer
37. lay cable it is called USB SERIAL CABLE F Even if you already have such a cable or you decide to purchase it elsewhere it is advisable to check this product page for a reference https www olimex com Products Components Cables USB Serial Cable USB Serial Cable F You need to connect the cable to the UART DEBUG pins as follows RX line to UARTO TX pin TX line to UARTO RX pin GND to GND Make sure that the serial cable is connected to your personal computer and recognized properly after driver installation After the hardware connection is established open a terminal program on the serial COM port Page 11 of 34 OLIMEXO 2015 RK3188 SOM EVB user s manual which the cable is associated with The typical baud rate is 115200 the rest of the settings should be left as per default After everything else is set you would need to power the board as explained in 3 3 Powering the board In the command line interface of the official Debian images you are automatically logged as root The default superuser username password combination in the GUI XFCE4 of the official images is olimex olimex When RK3188 SOM is attached to RK3188 SOM EV B in addition to the serial communication you might also use one or more of the following mediums to interact with the board 1 a monitor via the HDMI connector 2 SSH with a remote computer via LAN connector 3 a display via the LCD CON connector More details on each of the connections might be
38. lp you identify the main function of the pins You should at least refer to this RK3188 SOM s GPIO table RK3188 SOM GPIO PDF The EXT headers provide additional ways to power the board However double check your hardware setup since there is always a possibility of accidental short circuits especially if you power the board from multiple sources It is always recommended to use the mounted connectors to power the board and use the EXT pins related to the power circuit only for measurements 5 8 1 EXT 1 40 pin connector At the EXT 1 you can find the NAND flash memory signals You can also find the pins responsible for the on board LEDs There are free PWMs available on EXT 1 connector Most of the signals of EXT 1 are routed from RK3188 GPIO3 and RK3188 GPIOA EXT 1 connector Pin Signal name Processor pin Pin s Signal name Processor pin 1VCC 1 8 POWER CIRCUIT 2 GND POWER CIRCUIT 3 ADC INO H21 4ADC IN2 H19 5 NWP Y18 6 NRBO W17 7 NDQO AC20 8 NRE AB19 9 NDQ1 AB21 10 NCLE W18 11NDQ2 AA21 12 NALE U19 13 NDQ3 Y22 14 NWE H19 15 NDQ4 AC22 16 NCEO Y19 17 NDQ5 Y21 18 GPIOO BA LED1 AC10 19 NDQ6 AC23 20 GPIOO B6 LED2 Y11 21 NDQ7 AB22 22 GPIO3 D5 PWM2 P22 23 GPIOO DO FLASH DQS AB20 24 GPIO3 D6 P23 25 GPIOO D1 FLASH CSN1 Y2 26 GPIOO CO W22 27 GPIOO D2 FLASH CSN2 AA22 28 GPIOO C1 W20 29 GPIO _D3 FLASH_CSN3 AA2 30 GPIOO C2 W21 31 GPIO1 CO Y13 32 GP
39. odule is shown below l us l GP102_AB LCD1_ DO uL EM HDMI l GP102_A1 LCD1_D1 40 o cess l GPIO2 62 LCD1 D 59 05 ries I2C Slave Address 0x98 PCADR Low 6PI02_A3 LCD1_D3 56 03 I GP102_A4 LCD1_ D4 S l GPI02 65 LCD1 DS 55 ide l GP102_A6 LCD1_ D6 54 D OUDD l GP102_A7 LCD1_D S3 I GP102_B0 LCD1_D8 52 05 I GPIO2 B1 LCD1 D9 sa Ds abies I l GPI02 B2 LCD1 Did agile Tena l i GP102 B3 LCD1 D11 5 ou Undo i 012 GPI02 B5 LCD1 D13 46 012 Aiz ioni Z 4 48 pia g 2 ra i GPIO2 B7 LCD1 D15 45 Dia PIRE B _wrxap iln on 419 HIXZP qs GPIO2 CO LCD1 D16 437 D HIX2N 2 m ours 9 HIX2N pia GPI02 Ci LCD1 Di7 32 G5 cci E HTXiP 4 ma oura Z HIXIP iC GPIO2 C2 LCD1 D18 4 ois s HIXAN S wa oure HTXIN Eq 019 a GND GND i l GPIO2 C4 LCD1 D20 39 pog GND D iig l l GPIO2 C5 LCD1 D21 38 D21 NACRCLAMP 524P 1 o P 37 Z 6 E D22 TXCM l GPIO2 C7 LCD1 D23 36 935 PR ma our e a AE TXOM IN2 OUT2 eH o GPIO2 Di LCDi DEN amp 2 oc M ours zc SHEP sal GPIO2 Da LCD1 DCLK 51 brik TH ivi ours 6 HIXCN zaj tE I GPIO2 D2 LCD1 HSYNC 63 HSYNC TXiP GND G
40. peaks as high as 0 25A 10V during start up when different modules are initialized Page 16 of 34 OLIMEXO 2015 RK3188 SOM EVB user s manual CHAPTER 5 CONNECTORS AND PINOUT S Introduction to the chapter In this chapter are presented the connectors that can be found on the RK3188 SOM EVB board all together with their pinout and notes about them For the connectors available at the RK3188 SOM board please refer to its own user s manual Jumpers functions are described Notes and info on specific peripherals are presented Notes regarding the interfaces are given 5 1 UART DEBUG pins The direct communication method to the heart of the setup RK3188 SOM 4GB RK3188 SOM EVB is via the serial interface Such interface is available at the DEBUG UART connector located on the RK3188 SOM 4GB board five male pins near the edge of the board It is capable of interfacing the COM port of your computer with the help of your favorite terminal program puTTy minicom picocom teraterm etc You can use USB SERIAL CABLE F to interface DEBUG UART that allows you to debug the board with a personal computer with a free USB port In case of a video output problem a cable might provide the needed feedback and would greatly reduce the efforts needed to repair the board or to adjust the software settings By default only DEBUG_UART is defined as a port suitable for serial debug If you decide to make your own debugging cable you would need to conside
41. r boards using Rockchip processors is not as goods as that of the boards using Allwinner processors There are no configuration files for easier editing You would need to rebuild the kernel Q Is it possible to boot Debian from NAND Do you provide such image A Yes Refer to the chapter 5 4 USB OTG interface Read how to build such an image here https www olimex com wiki RK3188 SOM Booting from NAND Q How to generate boot able SD card Debian Linux image for RK3188 SOM A Build instructions and required files for the latest Debian images might be found at the wiki page of the board The step by step instructions are available here https www olimex com wiki RK3188 SOM Building Linux for RK3188 SOM Q How to detect and enable the Ethernet controller if it is disabled by default A You can enable it by following these two steps 1 To check under what name the LAN is associated write ifconfig a 2 If for example it is under ethO name then write dhclient ethO This should enable the Ethernet and then SSH would also be available You can also enable auto detection of Ethernet on power up by removing the comment auto ethO in etc network interfaces in the Linux image Page 33 of 34 OLIMEXO 2015 RK3188 SOM EVB user s manual 7 7 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 hardw
42. r that the levels at board s DEBUG UART are in CMOS level 3 3V and you would need a convertor to bring them to the TTL level of your computer or cable That is true for the RX and TX also UART DEBUG Consider the table above when connecting the USB SERIAL CABLE F according to the wire color code The RX line of the cable GREEN wire should go to TX line of the target board the TX line of the cable RED wire should go to the RX line of the target board The BLUE wire should go to the target s GND line For more information please refer to chapter 3 5 Interacting with the board The UART_DEBUG header can also be used to power a stand alone RK3188 SOM This is the recommended way of powering a standalone RK3188 board The voltage input pin is named 5 0V and it is suitable for 5V DC external power supply unit One of the two GND pins can be used as ground The required current may vary depending on the peripherals connected to the board The power supply should be capable of providing at least 2 5W For the powering we are only interested in the 5 0V pin and the GND pin Page 17 of 34 OLIMEXO 2015 RK3188 SOM EVB user s manual 5 2 UEXT connectors Universal EXTension UEXT is a connector layout which includes power ground and three popular buses data UART 12C and SPI The UEXT connector consists of 10 pins in a two row by five male pin configuration with a plastic keyed shroud All pins have a spacing
43. rd to guess the correct IP of the board since it has DHCP enabled by default especially if you are in a large network It is good idea to check the default settings by exploring the Linux image settings Those are usually stored in etc network interfaces For DHCP you need to enable auto detection and dhcp as shown below auto ethO iface eth inet dhcp Page 21 of 34 OLIMEXO 2015 RK3188 SOM EVB user s manual Important You can configure static DHCP given IP addresses in etc network interfaces For setting a static address please follow the pattern below auto eth iface eth inet static address 192 168 1 5 netmask 255 255 255 0 gateway 192 168 1 254 Important In some Debian images it is possible that the Ethernet doesn t get auto detected during boot up This is done on purpose because if there is auto detection enabled and you don t want to use the Ethernet connector or you have forgotten to plug a cable the start up would be greatly delayed This might be problem in the first start up to users counting only on SSH connection You can enable the Ethernet after a successful boot up with ifconfing a dhclient eth as seen after after the ifconfing command RJ45 LED COLOR CODE LED Color Usage LED1 Green Link status LED2 Yellow Activity status 5 7 HDMI connector The HDMI video output is handled by IT66121FN Low Power Transmitter with HDMI1 4 3D The part of the schematic that describes the HDMI m
44. ve different features or settings It is possible that parts of this document do not apply to all board revisions 1 5 Document organization Each section in this document covers a separate topic organized as follows Chapter 1 is an overview of the board usage and features Chapter 2 contains the general board diagram and layout Chapter 3 provides a guide for quickly setting up the board and software notes Chapter 4 is an explanation of the control circuitry associated with the 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 7 of 34 OLIMEXO 2015 CHAPTER 2 BOARD LAYOUT 2 1 Board layout top view Here you get acquainted with the main parts of the board The picture below shows the top side of the C hardware revision of the RK3188 SOM EVB board USB HOST1 with RK3188 SOM attached Only the top side of the board is shown since use uosra there are no peripherals at z the bottom side USB_HOST4 HDMI CONNECTOR The picture highlights the most important parts dii The names used on the board might differ from the names used below to describe them For the actual names check the RK3188 SOM EVB board itself RK3188 SOM EVB user s manual EXT2 CONNECTOR LCD CONNECTOR RK3188 SOM 4GB RTC BACKUP BATTERY SLOT ETHERNET CO
Download Pdf Manuals
Related Search