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User:Pau pajuelo

4,441 bytes removed, 15:28, 5 September 2014
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DM3730: Decode an AAC audio file (OK)
= Write your first C Program using Eclipse IDE TODO: =
== Overview ==Categorize new tutorials
Eclipse IDE is a software development environtment, this software package is very popular because you can extend its functionalities using pluggins. C applications can be compiled in Eclipse using Autoconf tools or Makefile. Autoconf tools can be useful if you want How to develop a huge application with a lot of software dependencies, but this method can be tedious if you want to develop a simple application. manage the kernel modules on Linux
At IGEP v3.0 VM, Eclipse includes Linux tools and Yocto plugin to develop C applications for IGEP firmware as quickly and easily as possible. How do I edit my kernel command line
== PreAUDIO DSP-requisites ARM==
To follow this How===Included (IGEP GST DSP):==='''AACHEDEC -to you need: > DEC AACHE (OK)'''
*VMware or VirtualBox virtualization software *IGEP SDK v3http://download.0 Virtual Machine RC2 with Eclipse IDE<br> *IGEP BOARD with Ethernet communication (for example IGEPv2)<br> *MANUAL IGEP SDK v3wavetlan.0 VM<br>com/SVV/Media/HTTP/FAAC-HE-AAC.aac
gst-launch --gst-debug-level=2 filesrc location= Getting started sampleaache.m4a ! TIAuddec1 codecName=aachedec engineName=codecServer ! volume volume=0.25 ! alsasink sync==false
First at all, you should read MANUAL IGEP SDK v3.0 VM and follow the next instructions: outofthebox->ok
*Install your Virtual Machine *Install your Virtual Machine Guest additions *Prepare your Rootfs in your Micro SD Card *Connect to your IGEP Board using Ethernet Commnication *Build programs using Eclipse IDE----
== Hello world compiled with Eclipse<br'''MP3DEC -> ==DEC MP3 (AUDIO ERRORS)'''
If you follow "Getting started" chapter you have compiled some source example programs for Eclipse, these programs use Autotools to generate binary code for - Followed README file from ISEE - IGEPDSP - GST + DMAI Support Package 3. Now is time to compile your Helloworld example program without using autotools40. 00
=== Create your new projecthttp: ===//www.stephaniequinn.com/Music/Canon.mp3
Open Eclipsegst-&gt;Filelaunch -&gt;New-&gt;C Project gst-debug-level=2 filesrc location=Canon.mp3 ! TIAuddec1 codecName=mp3dec engineName=codecServer ! volume volume=0.25 ! alsasink sync=false
At C Project Window: '''Random fatal bit error'''
Yocto Project ADT Project '''mp3-&gt;Empty Project plugin doesn't resolve the error'''
Insert your project name and finish. At Project explorer panel you will see your new project----
=== Create your source files: ==='''G711DEC -> DEC PCM uLAW (speech) (NOT TESTED)'''
Go to New C/C++ Source File button and write at "Source file:" field your source file name, for example main.c. Finish the assistant and copy the next code at this file: <pre'''G711ENC ->#include &lt;stdio.h&gt; int main(void){ printfENC PCM uLAW ("Hello world\n"speech); return 0;} </pre> Follow the instructions above and create a Source File named Makefile and copy the next code: <pre>all: main.c $(CCNOT TESTED) -g -O0 -o main main.c'''
clean===Not included (IGEP GST DSP):=== rm '''ACCLCDEC -f main main.o</pre> CC is an environment variable that links with arm-poky-linux-gnueabi-gcc binary DEC AACLE (IGEP SDK GCCNOT TESTED). Environment variables are a set of dynamic named values that can affect the way running processes will behave on a computer. It is very useful because you can generate a Makefile that can be compiled with multiple toolchains. '''
IGEP SDK Environtment variables are located at /opt/poky/1.2/environment'''AACLDDEC -setup-armv7a-vfp-neon-poky-linux-gnueabi. You can add this variables using "source" command or see your current environtment variables using "env" command. > DEC AACLD (NOT TESTED)'''
If you need to develop more complex programs, you should read this [http://www.cs.colby.edu/maxwell/courses/tutorials/maketutor/ Makefile tutorial].<br'''WMA9 ->DEC WMA9 (COMPILING ISSUES)'''
=== Compile your program: ==='''ACCLCENC -> ENC AACLE (NOT TESTED)'''
Now you can compile, run and debug your program using the MANUAL IGEP SDK v3.0 VM<br'''ACCHEENC ->ENC AACHE (NOT TESTED)'''
= How to develop with Qt under IGEP ='''AACLDENC -> ENC AACLD (NOT TESTED)'''
== Overview =='''WMA8 -> ENC WMA8 (NOT TESTED)'''
This guide can be helpful to learnt to develop Qt applications under IGEP Boards. Qt is a cross'''Problems adding codecs into igep-platform application framework that is widely used for developing application software with a graphical user interface, and also used for developing nongst-GUI programs such as command-line tools and consoles for servers. You can get more information [http://qt.nokia.com/ here]. dsp'''
== Requirements<br> DM3730==
There are some requisites to follow this guide=== DM3730: Decode a MP3 file (OK) (ADDED TO REPOSISTORIES)===
*IGEP SDK VM: follow the IGEP&nbsp;SDK&nbsp;SOFTWARE&nbsp;USER&nbsp;MANUAL (chapter 2.3 "Setting up and running the VM")<br> *IGEP Qt Demo: follow the IGEP&nbsp;SDK SOFTWARE&nbsp;USER&nbsp;MANUAL (chapter 6.1 "Create IGEP firmware bootable micro-sd card") and install&nbsp;qt4e-demo-image-igep00x0.tar.bz2 instead IGEP firmware. *[http://www.isee.biz/products/processor-boards/igepv2-board IGEPv2], [http://www.isee.biz/products/expansion-boards/product-igep-berlin IGEP BERLIN] or [http://www.isee.biz/products/expansion-boards/product-igep-paris IGEP PARIS] *MicroSD Card (at least 2Gbytes)<br>'''under contruction'''
'''''"Link software "''does not have an accelerated audio decoder element'''
== Download and install Qt demo image to a SD<br> ==- Compiled gst-plugins-ugly using yocto tools
Once you have open IGEP SDK VM, launch a terminal and type: <pre>cd Desktop/wget http://downloads.isee.biz/denzil/binary/qt4e-demorpm -igst-plugins-imageugly-igep00x00.tar*.bz2 git clone git://git.isee.biz/pub/scm/igep-tools.gitcd igep-tools/scripts</pre> Insert a SD-Card media and use the igep-media-create script to copy the firmware to SD-Card media, required options are: rpm
*-rpm -i libmad0-mmc &lt;/dev/sdX&gt;0.*.rpm
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; unformated MMC Card - rpm -i gst-plugins-ugly-mad-0.*.rpm
*-gst-image &lt;filename&gt;launch filesrc location=sample.mp3 ! mad ! volume volume=0.25 ! alsasink
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; specify === DM3730: Decode a RA or RM audio file used to create the bootable SD card. (ERRORS)===
*gst-launch -machine &lt;machine&gt;-gst-debug-level=3 filesrc location=sample.ra ! rmdemux ! volume volume=0.25 ! alsasink
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; specify the machinehttp://www. Options are igep0020, igep0030 or igep0032<br> superluminal.com/andalib/ra/listen.ra
For example, assuming the SD card device takes "/dev/sdf" and you have and IGEPv2 board (igep0020), type: <pre>./igepgst-mediaplugins-create ugly-rmdemux-mmc /dev/sdf --machine igep0020 -0.10.19-image /home/jdoe/Desktop/qt4e-demo-image-igep00x0r1.tararmv7a.bz2</pre> This should give you a bootable SD-card<br>rpm
== Prepare Qt demo image ==libgstsdp-0.10-0-0.10.36-r3.armv7a.rpm:libgstsdp-0.10-0 libgstsdp-0.10.so.0
Qt demo image is a root filesystem build by Yocto that contains Qt embedded libraries, also this image has some Qt examples for testing purposeslibgstrtsp-0. 10-0-0.10.36-r3.armv7a.rpm:libgstrtsp-0.10-0 libgstrtsp-0.10.so.0
This image doesn't have openssh and gdbserver, so we should install these packages to develop Qt applications. Open a shell prompt using serial communication (IGEP&nbsp;SDK&nbsp;SOFTWARE&nbsp;MANUAL chapter 3.1 "Using serial mode") and type the following commands''Error: <pre>zypper refzypper in opensshzypper in gdbserver</pre> Now you can connect between IGEP and VM using SSH protocol:<br> <pre>ssh root@"IGEP IP for example: 192.168.5.1"</pre>'''
== Using Qt Creator 0:00:00.084839071 ==1550 0xa137b0 WARN rmdemux rmdemux.c:1012:gst_rmdemux_chain:<rmdemux0> Bogus looking header, unprintable FOURCC
=== First Steeps0:00:00.085052695 1550 0xa137b0 WARN rmdemux rmdemux.c:1012:gst_rmdemux_chain:<brrmdemux0> ===Bogus looking header, unprintable FOURCC
==== Open Program0:00:00.085540976 1550 0xa137b0 WARN rmdemux rmdemux.c:1057:gst_rmdemux_chain:<brrmdemux0> ====Unknown object_id .ra4
Go to Applications -&gt; IGEP development -&gt; Qt Creator0:00:00.085693564 1550 0xa137b0 WARN rmdemux rmdemux.c:1012:gst_rmdemux_chain:<brrmdemux0> Bogus looking header, unprintable FOURCC
{| width="200" cellspacing="1" cellpadding="1" border="1"|-| [[Image0:Openqtv200:00.085815634 1550 0xa137b0 WARN rmdemux rmdemux.png|331x249px]]<br> | [[Imagec:1012:gst_rmdemux_chain:Qtopenedv2.png|331x249px]]<brrmdemux0>|}Bogus looking header, unprintable FOURCC
==== Open an example0:00:00.085907187 1550 0xa137b0 WARN rmdemux rmdemux.c:1057:gst_rmdemux_chain:<brrmdemux0> ====Unknown object_id RaTC
Copy your desired example from=== DM3730: /opt/QtSDK/Examples/4.7 to your desktop.<br>Decode an AAC audio file (OK)===
{| widthEXTRA_OECONF +="200" cellspacing--disable-examples --disable-experimental --disable-sdl --disable-cdaudio --disable-directfb \ --with-plugins="1" cellpadding="1" border="1"musicbrainz,wavpack,ivorbis,mpegvideoparse,'''faad2''' --disable-vdpau --disable-apexsink \| --disable-orc"| [[ImageInstall:Qtcopyanexamplev2.png|496x373px]]|}
'''NOTE:''' some examples (like hellogl) cannot be compiled to ARM
Open this example with Qt Creator, set Desktop target and use for each Qt Version one debug and one release faad2-2.7-r2.armv7a.rpmlibfaad2-2.7-r2.armv7a.rpmgst-plugins-bad-faad-0.10.23-r2.armv7a.rpm
{| cellspacing="1" cellpadding="1" border="1" style="width: 675px; height: 256px;"'''maybe there are necessary more packages, compare actual gst-bad-recipe and add changes. Necessary add faad2 recipe'''|<pre>bitbake faad2 gst-plugins-bad</pre>| [[Image:Qtopenanexamplev2<pre> rpm -i faad2-2.7-r2.png|331x249px]] armv7a.rpm| [[Image:Qtopenanexample2v2rpm -i libfaad2-2.7-r2.armv7a.png|331x249px]] rpm| [[Image:Qtopenanexample3v2rpm -i gst-plugins-bad-faad-0.10.23-r2.1.armv7a.png|331x249px]]rpm|} </pre>
gst-launch --gst-debug-level=3 filesrc location=sample.aac ! faad ! volume volume= ARM Platform<br> ===0.10 ! alsasink
=== Build Programs <br> = DM3730: Decode an WMA audio file (OK)====
To compile to ARM for IGEP go to Project use the following configuration at Projects field <pre>bitbake gst-&gt; Build: ffmpeg</pre>
{| width<pre>gst-launch -v filesrc location="200" cellspacing="1" cellpaddingsample.wma ! asfdemux ! decodebin ! audioconvert ! volume volume="1" border="1"|-| [[Image:Qtarmconfigv20.png|496px]]|}25 ! alsasink </pre>
'''NOTE=== DM3730:''' Use Debug Release if you want to debug later Decode an OGG audio file (OK)===
Compile with: Build-&gt;Clean All and Build-&gt;Build All '''Into repositories (Ctrl+Shift+Bbase plugins). :'''
==== Run Programs ====http://upload.wikimedia.org/wikipedia/en/0/04/Rayman_2_music_sample.ogg
Once you compiled the program pass it from VM to IGEP&nbsp;via SSH, gst-launch a terminal and type: <pre>scp "pathtobinary" root@"IGEP IP for example: 192-v filesrc location=sample.168.5.1":/home/root</pre> Get a remote shell prompt and run your program: <br> <pre>ssh root@"IGEP IP for example: 192.168.5.1"./"binary" "optional:arguments"</pre> {| width="200" cellspacing="1" cellpaddingogg ! oggdemux ! vorbisdec ! audioconvert ! volume volume="1" border="1"|-| [[Image:Qtrunarmv20.jpg|496x373px]]|}25 ! alsasink
'''NOTE:''' You cannot use igep-remote-x program because Qt-demo image doesn't have X installed.<br>== BASE0033 CONNECTOR SUMMARY TABLE==
==== Debug Programs ==Configure a static IP using the same private network range ==
Once you compiled the program pass it from VM to IGEP&nbsp;via SSH, launch a terminal and type: <pre>scp "pathtobinary" root@"IGEP IP for example: 192.168.5.1":/home/root</pre> Get a remote shell prompt and run gdbserver: <pre>ssh root@"IGEP IP for example: 192.168.5.1"gdbserver "hostip,for example "VM IP for example: 192.168.5.10":1000 "pathtobinary" "optional:armguments"</pre> Now use the followings steps to debug program:<br> '''under construction'''
{| cellspacing="1" cellpadding="1" border="1" width="200"|-| [[Image:Qtdebugx861v2.png|331x249px]] | [[Image:Qtarmdebug1v2.png|331x249px]]|-| [[Image:Qtarmdebug2v2.png|331x249px]] | [[Image:Qtarmdebug3v2.png|331x249px]]|}IGEP Firmware Yocto uses the following Ethernet network configuration (IP addresses)
Set breakpoints in your source code *eth0 − 192.168.5.1*eth0:0 − assigned via dhcp.
At Start Debugger window (image 3), This Ethernet network configuration is really useful when you work using a Linux operating system like IGEP SDK Virtual Machine. Because you use the following configurationeth0 device to communicate easily with your board and eth0: 0 device to get Internet acces using dhcp protocol.
*Debugger: /opt/poky/1.2/sysroots/i686-pokysdk-linux/usr/bin/armv7a-vfp-neon-poky-linux-gnueabi/arm-poky-linux-gnueabi-gdb *Local executable: "pathtohostbinary" *Host and port: "IGEP IP But some scenarios this network configuration is not useful, for example: 192.168.5.1":1000 *Architecture: arm *GNU target: armif you use a non-none-linux-gnueabi *Sysroot: /opt/poky/1Linux operating system, connect to two IP private range interfaces is not simple.2/sysroots/armv7a-vfp-neon-poky-linuxThis How-gnueabi *Location of debugging information: (empty) *Override host GDB start script. (empty)to can be useful to
<br> (Make diagram one: IGEP and Linux defualt communication. Diagram 2 IGEP and other SO alternative configuration)
'''NOTE:''' You cannot use = igep-remote-x program because Qt-demo image doesn't have X installed.<br>ini parameters =
The kernel command line syntax is name=== x86 Platform<br> ===value1. These next parameters are supported in igep.ini since IGEP-X_Loader 2.4.0-2:
==== Build Programs [kernel] ====
To compile to x86 go to Project use the following configuration at Projects field -&gt; Build:  {| widthalign="200JUSTIFY" cellspacingcellpadding="1" cellpaddingborder="1" borderstyle="1width: 900px; height: 240px;"|-| '''Parameter Name''' | '''Description''' | '''Default value''' | '''Comments'''|-| kaddress | Kernel copy address | =0x80008000 | Hex memory address|-| rdaddress | Ram Disk location address | =0x81600000 | Hex memory address;<br>disabled by default|-| serial.low | Serial number (low part) | =00000001 | Numeric|-| serial.high | Serial number (high part) | =00000000 | Numeric|-| revision | Revision ID | =0003 | Numeric|-| kImageName | Kernel, binary image name | =zImage | Kernel or binary image name|-| kRdImageName | Kernel RAM Disk Image Name | - | Ram Disk image name|-| MachineID | Machine ID (kernel ID) | ;IGEPv2<br>=2344 | ;Module<br>=2717<br>;Proton<br>=3203
|-
| Mode | Boot Mode | ;Linux kernel<br>=kernel | ;Other image (like uboot)<br>[[Image:Qtx86configv2.png|496px]binary image]
|}
'''NOTE:''' Use Debug Release if you want to debug later<br> === [kparams] ===
Compile with{| align="JUSTIFY" cellpadding="1" border="1" style="width: 900px; height: Build1095px;"|-| '''Parameter Name''' | '''Description''' | '''Default value''' | '''Comments'''|-| buddy | Enable/disable expansion board support | &gtnbsp;Clean All ;IGEPv2 Expansion Board support<br>=igep0022 | &nbsp;;Berlin and BuildParis Expansion Board support<br>=base0010<br>New York Expansion<br>=ilms0015|-&gt;Build All (Ctrl+Shift+B). | console | Setup the kernel console parameters | =ttyO2,115200n8 | -|-| earlyprintk | Enable early printk | - | -|-| mem | Setup the Board Memory Configuration | =430M | -|-| boot_delay | Setup the boot delay | =0 | -|-| mpurate | Setup ARM Processor Speed | - | -|-| loglevel | Setup the loglevel | - | -|-| debug | Enable kernel debug output | - | -|-| fixrtc | Fix RTC variable | - | -|-| nocompcache | Configure nocompcache variable | = Run Programs 1 | -|-| omapfb.mode | Configure frame bugger configuration | =dvi:hd720-16@50 | &nbsp;;Other configuration<br>=dvi:1280x720MR-16@60|-| vram | Configure Video RAM assigned to every frame buffer | - | -|-| omapfb.vram | Configure Video RAM assigned to every frame buffer | - | -|-| omapfb.debug | Configure frame buffer debug output | - | -|-| omapdss.debug | Configure DSS Video debug output | - | -|-| smsc911x.mac0 | Configure Board Ethernet Mac Address | =0xb2,0xb0,0x14,0xb5,0xcd,0xde | For IGEP BERLIN|-| smsc911x.mac1 | Configure Board Ethernet Mac Address | =0xb2,0xb0,0x14,0xb5,0xcd,0xdf  Use run button | For IGEP BERLIN (Ctrl+Ronly with IGEP PROTON)|-| smsc911x. mac | Configure Board Ethernet Mac Address | =0xb2,0xb0,0x14,0xb5,0xcd,0xde | For IGEPv2, IGEP PROTON, IGEP PARIS and IGEP BERLIN|-| ubi.mtd | Fot UBI FS boot | - | -|-| root | Configure root directory for MMC, NFS or UBI {| width&nbsp;;For mmc memory<br>="200" cellspacing/dev/mmcblk0p2 rw rootwait | &nbsp;;For flash memory<br>="1" cellpadding/dev/mtdblock2|-| nfsroot | For NFS boot | - | -|-| rootfstype | For UBI FS boot | - | -|-| ip | For NFS boot | - | -|-| init | Assign init program | - | -|-| musb_hdrc.debug | USB debug | - | -|-| musb_hdrc.use_dma | USB over network | - | -|-| libertas.libertas_debug | Configure libertas debug | - | -|-| board.ei485 | Enable/disable RS485 | &nbsp;;Enable RS485<br>="1" borderyes | &nbsp;;Disable RS485<br>="1"no
|-
| [[Image:Qtrunx86v2board.pngmodem |496x373px]]Enable/disable GPRS modem |} ==== Debug Programs ===&nbsp;;Enable modem (IGEPv2 Expansion)<br>=no  Set breakpoints in your source code and press debug button | &nbsp;;Enable modem (F5IGEPv2 Expansion)  {| width="200" cellspacing="1" cellpadding="1" border<br>="1"yes
|-
| [[Image:Qtdebugx861v2buddy.pngrevision |331x249px]Enable hardware buddy revision [A or B] | [[Image:Qtdebugx862v2.pngOnly for base0010<br>=A |331x249px]]Only for base0010<br>=B
|}
 
= Set up a NFS between IGEP Board and IGEP VM =
 
== Overview ==
 
Network File System (NFS) is a Distributed file system protocol originally developed by Sun Microsystems in 1984, allowing a user on a client Computer to access files over a network in a manner similar to how local storage is accessed. NFS, like many other protocols, builds on the Open Network Computing Remote Procedure Call (ONC RPC) system. The Network File System is an open standard defined in RFCs, allowing anyone to implement the protocol. More information [http://en.wikipedia.org/wiki/Network_File_System here].<br>
 
In IGEP Boards, NFS protocol can be used to mount a whole root filesystem located in a remote disk, this method is useful to develop or test applications.<br>
 
== Requirements ==
 
There are some requisites to follow this guide:
 
*IGEP SDK VM: follow the IGEP&nbsp;SDK&nbsp;SOFTWARE&nbsp;USER&nbsp;MANUAL (chapter 2.3 "Setting up and running the VM")<br>
*IGEP Qt Demo or IGEP Firmware: follow the IGEP&nbsp;SDK SOFTWARE&nbsp;USER&nbsp;MANUAL (chapter 6.1 "Create IGEP firmware bootable micro-sd card") <br>
*IGEP Board with Ethernet
*MicroSD Card (at least 2Gbytes)<br>
 
'''''"Link software "'''''
 
== Set up NFS at VM ==
 
=== Download and extract IGEP root filesystem ===
 
ISEE mantains two rootfs builded with Yocto tools:
 
*IGEP firmware: default software shipped in all IGEP Boards. It comes with some documentation and tools, so you need to uncompress again to extract rootfs
<pre>wget http://downloads.isee.biz/denzil/binary/igep_firmware-yocto-1.2.1-1.tar.bz2
tar jxf igep_firmware-yocto-*.tar.bz2
cd igep_firmware-yocto-*
sudo mkdir /srv/{your_rootfs_dir}
sudo tar jxf demo-image-sato-igep00x0.tar.bz2 -C /srv/{your_rootfs_dir} </pre>
*Qt demo: demo filesystem with Qt libraries and examples
<pre>wget http://downloads.isee.biz/denzil/binary/qt4e-demo-image-igep00x0.tar.bz2
sudo mkdir /srv/{your_rootfs_dir}
sudo tar jxf qt4e-demo-image-igep00x0.tar.bz2 -C /srv/{your_rootfs_dir}</pre>
=== Configure NFS Server ===
 
*Install nfs-kernel-server:
<pre>sudo apt-get install nfs-kernel-server </pre>
*Make directory exports.d:<br>
<pre>sudo mkdir /etc/exports.d </pre>
Edit /etc/exports file, add the following line and save the changes:
<pre>/srv/{your_rootfs_dir} *(rw,sync,no_subtree_check,no_root_squash)</pre>
Export NFS file system:
<pre>sudo exportfs -a</pre>
== Set up NFS at IGEP Board ==
 
=== MicroSD boot ===
 
Configure igep.ini file located at boot partition:<br>
 
*Comment MMC boot:
<pre>; --- Configure MMC boot ---
;root=/dev/mmcblk0p2 rw rootwait</pre>
*Add NFS configuration:
<pre>; --- Configure NFS boot ---
ip=192.168.5.1:192.168.5.10::255.255.255.0::eth0
root=/dev/nfs
nfsroot=192.168.5.10:/srv/{your_rootfs_dir}</pre>
Save changes and restart IGEP Board
 
=== Flash boot<br> ===
 
Boot IGEP with a MicroSD card without NFS support.
<pre>mkdir /tmp/temp
mount -t jffs2 /dev/mtdblock1 /tmp/temp </pre>
Now, mtdblock1 partition is mounted at /tmp/temp directory. Modify igep.ini located in flash memory:
 
*Comment JFFS2 FS boot:
<pre>; --- Configure JFFS2 FS boot ---
;root=/dev/mtdblock2
;rootfstype=jffs2</pre>
*Add NFS configuration:
<pre>; --- Configure NFS boot ---
ip=192.168.5.1:192.168.5.10::255.255.255.0::eth0
root=/dev/nfs
nfsroot=192.168.5.10:/srv/{your_rootfs_dir}</pre>
Save changes, power down IGEP Board, unplug MicroSD card and power up your board.
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