Blog - All Comments

RE: RIoTboard: Building a TFT LCD Display and Digitizer - Part 2: Circuit

rudra90 — Thu, 03 Jun 2021 18:35:29 GMT

Hi shabaz

Could you tell me whether we can connect the lcd display of laptop with cell phone's mother board (like iPhone 4s) directly from the cell phone's display port.

Please share your suggestion

RE: Linux 4.1 + Ubuntu 14.04 on RIoTboard

zaahir — Tue, 25 Dec 2018 06:18:36 GMT

Hi,

Thanks for your post.

I am trying to port riotboard linux 4.2 from buildroot build on ubuntu 18.XX. My problem might sound silly but not able to flash compiled uboot image to baord.

Bootup logs:

U-Boot 2009.08-00695-g055df3a (Dec 25 2013 - 09:56:12)

CPU: Freescale i.MX6 family TO1.1 at 792 MHz

Thermal sensor with ratio = 181

Temperature: 30 C, calibration data 0x57b5025f

mx6q pll1: 792MHz

mx6q pll2: 528MHz

mx6q pll3: 480MHz

mx6q pll8: 50MHz

ipg clock : 66000000Hz

ipg per clock : 66000000Hz

uart clock : 80000000Hz

cspi clock : 60000000Hz

ahb clock : 132000000Hz

axi clock : 198000000Hz

emi_slow clock: 99000000Hz

ddr clock : 396000000Hz

usdhc1 clock : 198000000Hz

usdhc2 clock : 198000000Hz

usdhc3 clock : 198000000Hz

usdhc4 clock : 198000000Hz

nfc clock : 24000000Hz

Board: i.MX6DL/Solo-SABRESD: unknown-board Board: 0x61011 [POR ]

Boot Device: SD

I2C: ready

DRAM: 1 GB

MMC: FSL_USDHC: 0,FSL_USDHC: 1,FSL_USDHC: 2,FSL_USDHC: 3

In: serial

Out: serial

Err: serial

Net: got MAC address from IIM: 00:00:00:00:00:00

----enet_board_init: phy reset

FEC0 [PRIME]

Hit any key to stop autoboot: 0

mmc1 is current device

MMC read: dev # 1, block # 2048, count 8192 ... 8192 blocks read: OK

Wrong Image Format for bootm command

ERROR: can't get kernel image!

MX6Solo RIOT U-Boot >

It always bootup probably with default(pre-compiled) uboot (Dec 25 2013 - 09:56:12) . Boot device selected is SD card. But not picking new uboot image from SD card.

Board will bootup even formatted SD card is connected. But board didn't bootup if SD is not connected.

Not understanding from where its executing uboot image & why? (May be SPI flash.. not sure). How the board will execute new compiled uboot image from SD card.

Appreciate your comments & feedback.

Thanks,

Zahir

RE: Linux 4.1 + Ubuntu 14.04 on RIoTboard

gereds — Wed, 17 Oct 2018 12:22:30 GMT

Hi,

Thanks for your very nice post.

Just a mention, in your description of creating the boot script you should replace line 6:

[embed:dc8ab71f-3b98-42d9-b0f6-e21e02a0f8e2:3ef06e6b-9b7d-4651-b12d-db8be7f5e991:type=xml&text=setenv+bootargs+console%3Dttymxc1%2C115200+nosmp+video%3Dmxcfb0%3Adev%3Dhdmi%2C1280x720M%4060%2Cbpp%3D32+video%3Dmxcfb1%3Aoff+fbmem%3D10M+vmalloc%3D400M+rootwait+root%3D%2Fdev%2Fmmcblk0p1]

with this one:

Thank you

RE: RIoTboard: Building a TFT LCD Display and Digitizer - Part 2: Circuit

robot246 — Wed, 24 Jan 2018 08:52:43 GMT

guyz i have a screen i do not know the pinout of {boe 070 rev0/ kr070pb2s}plz help me find out the pins and how to connect it to arduino uno

RE: Rooting Android for the RIoTBoard

mrpipes3 — Sun, 03 Dec 2017 20:59:34 GMT

I keep getting mount operation not permitted. Do I need to log in as root somehow? Very new!

RE: Linux 4.1 + Ubuntu 14.04 on RIoTboard

epsylon67 — Sat, 02 Dec 2017 21:24:55 GMT

You shoud download the basic rootfs http://s3.armhf.com/dist/basefs/ubuntu-trusty-14.04-armhf.com-20140603.tar.xz not from wandboard!

RE: Metal Enclosure for RIoTboard

dougw — Mon, 15 May 2017 03:26:54 GMT

Nice work - it is tough to get good precision in this type of build.

RE: Metal Enclosure for RIoTboard

balearicdynamics — Sun, 14 May 2017 20:40:18 GMT

As you have a radio device nearby I assume you are more expert than mine. Does the Aluminium enclosure is sufficient for radio insulation instead of iron?

Enrico

RE: Metal Enclosure for RIoTboard

DAB — Sun, 14 May 2017 18:43:08 GMT

Nice post.

Good metal work.

One caveat, make sure you put the case to earth ground!

Do not assume that a wall ground pin gets the job done.

You can run into a lot of issues with a floating ground around the CPU, especially if you are connected to RF equipment.

The floating ground tends to make an excellent antenna.

DAB

RE: Riotboard and Ultrasonic Sensor (HC-SR04)

salih.mutlu@gmail.com — Tue, 25 Apr 2017 07:30:58 GMT

Hi,

A very nice tutorial. I have some questions:

1) In driver, you set gpios as input or output, why do you export also in user space?

2) If I want that "devmem 0x20E009C w 0x5" command in driver, what should I do?

3) If I want to build it into the kernel statically, is there anything that I have to do?

Thanks

RE: Building Android from Source

salih.mutlu@gmail.com — Tue, 11 Apr 2017 06:50:24 GMT

Hi,

I am trying to follow the instructions, but I've ended up with following error: (trying on a debian 7.5 live virtualbox)

...

Note: frameworks/base/packages/DefaultContainerService/src/com/android/defcontainer/DefaultContainerService.java uses or overrides a deprecated API.

Note: Recompile with -Xlint:deprecation for details.

Note: packages/providers/CalendarProvider/src/com/android/providers/calendar/CalendarDatabaseHelper.java uses or overrides a deprecated API.

Note: Recompile with -Xlint:deprecation for details.

Note: packages/providers/CalendarProvider/src/com/android/providers/calendar/CalendarProvider2.java uses unchecked or unsafe operations.

Note: Recompile with -Xlint:unchecked for details.

target Java: DownloadProviderUi (out/target/common/obj/APPS/DownloadProviderUi_intermediates/classes)

target Java: Ethernet (out/target/common/obj/APPS/Ethernet_intermediates/classes)

target Java: com.android.location.provider (out/target/common/obj/JAVA_LIBRARIES/com.android.location.provider_intermediates/classes)

packages/apps/Ethernet/src/android/net/ethernet/EthernetStateTracker.java:25: cannot find symbol

symbol : class scanResult

location: class android.net.EthernetDataTracker

import android.net.EthernetDataTracker.scanResult;

packages/apps/Ethernet/src/android/net/ethernet/EthernetStateTracker.java:26: cannot find symbol

symbol : class connectResult

location: class android.net.EthernetDataTracker

import android.net.EthernetDataTracker.connectResult;

Note: Some input files use or override a deprecated API.

Note: Recompile with -Xlint:deprecation for details.

packages/apps/Ethernet/src/android/net/ethernet/EthernetMonitor.java:57: cannot find symbol

symbol : method setHandler(android.net.ethernet.EthernetMonitor.NetStateHandler)

location: class android.net.EthernetDataTracker

mDataTracker.setHandler(sInstance);

packages/apps/Ethernet/src/android/net/ethernet/EthernetStateTracker.java:198: cannot find symbol

symbol : method getEthernetCarrierState(java.lang.String)

location: class android.net.EthernetDataTracker

return mDataTracker.getEthernetCarrierState(iface);

packages/apps/Ethernet/src/android/net/ethernet/EthernetStateTracker.java:239: cannot find symbol

symbol : method configureIfc(java.lang.String,java.lang.String,java.lang.String,java.lang.String,java.lang.String,java.lang.String,java.lang.String,boolean)

location: class android.net.EthernetDataTracker

mDataTracker.configureIfc(m.getIfName(),

packages/apps/Ethernet/src/android/net/ethernet/EthernetStateTracker.java:256: cannot find symbol

symbol : method configureIfc(java.lang.String,java.lang.String,java.lang.String,java.lang.String,java.lang.String,java.lang.String,java.lang.String,boolean)

location: class android.net.EthernetDataTracker

isOK = mDataTracker.configureIfc(m.getIfName(),

packages/apps/Ethernet/src/android/net/ethernet/EthernetStateTracker.java:272: cannot find symbol

symbol : method setUserFlag(boolean)

location: class android.net.EthernetDataTracker

mDataTracker.setUserFlag(flag);

packages/apps/Ethernet/src/android/net/ethernet/EthernetStateTracker.java:347: cannot find symbol

symbol : class scanResult

location: class android.net.ethernet.EthernetStateTracker

scanResult sR;

packages/apps/Ethernet/src/android/net/ethernet/EthernetStateTracker.java:348: cannot find symbol

symbol : class connectResult

location: class android.net.ethernet.EthernetStateTracker

connectResult cR;

packages/apps/Ethernet/src/android/net/ethernet/EthernetStateTracker.java:353: cannot find symbol

symbol : variable ETHER_MSG_ADD_INTERFACE

location: class android.net.EthernetDataTracker

case EthernetDataTracker.ETHER_MSG_ADD_INTERFACE:

packages/apps/Ethernet/src/android/net/ethernet/EthernetStateTracker.java:354: cannot find symbol

symbol : class scanResult

location: class android.net.ethernet.EthernetStateTracker

sR = (scanResult)msg.obj;

packages/apps/Ethernet/src/android/net/ethernet/EthernetStateTracker.java:364: cannot find symbol

symbol : variable ETHER_MSG_INTERFACE_STATUS_CHANGE

location: class android.net.EthernetDataTracker

case EthernetDataTracker.ETHER_MSG_INTERFACE_STATUS_CHANGE:

packages/apps/Ethernet/src/android/net/ethernet/EthernetStateTracker.java:365: cannot find symbol

symbol : class scanResult

location: class android.net.ethernet.EthernetStateTracker

sR = (scanResult)msg.obj;

packages/apps/Ethernet/src/android/net/ethernet/EthernetStateTracker.java:374: cannot find symbol

symbol : variable ETHER_MSG_INTERFACE_STATUS_CHANGE

location: class android.net.EthernetDataTracker

sendMessage(EthernetDataTracker.ETHER_MSG_INTERFACE_STATUS_CHANGE, sR.iFace);

packages/apps/Ethernet/src/android/net/ethernet/EthernetStateTracker.java:379: cannot find symbol

symbol : variable ETHER_MSG_CONNECTED_SUCCESS

location: class android.net.EthernetDataTracker

case EthernetDataTracker.ETHER_MSG_CONNECTED_SUCCESS:

packages/apps/Ethernet/src/android/net/ethernet/EthernetStateTracker.java:380: cannot find symbol

symbol : class connectResult

location: class android.net.ethernet.EthernetStateTracker

cR = (connectResult)msg.obj;

packages/apps/Ethernet/src/android/net/ethernet/EthernetStateTracker.java:391: cannot find symbol

symbol : variable ETHER_MSG_CONNECTED_SUCCESS

location: class android.net.EthernetDataTracker

sendMessage(EthernetDataTracker.ETHER_MSG_CONNECTED_SUCCESS, cR.iFace);

packages/apps/Ethernet/src/android/net/ethernet/EthernetStateTracker.java:396: cannot find symbol

symbol : variable ETHER_MSG_CONNECTED_FAILED

location: class android.net.EthernetDataTracker

case EthernetDataTracker.ETHER_MSG_CONNECTED_FAILED:

packages/apps/Ethernet/src/android/net/ethernet/EthernetStateTracker.java:397: cannot find symbol

symbol : class connectResult

location: class android.net.ethernet.EthernetStateTracker

cR = (connectResult)msg.obj;

packages/apps/Ethernet/src/android/net/ethernet/EthernetStateTracker.java:407: cannot find symbol

symbol : variable ETHER_MSG_CONNECTED_FAILED

location: class android.net.EthernetDataTracker

sendMessage(EthernetDataTracker.ETHER_MSG_CONNECTED_FAILED, cR.iFace);

packages/apps/Ethernet/src/android/net/server/EthernetService.java:63: cannot find symbol

Note: packages/providers/DownloadProvider/src/com/android/providers/downloads/StorageManager.java uses or overrides a deprecated API.

Note: Recompile with -Xlint:deprecation for details.

symbol : method clearConnections()

location: class android.net.EthernetDataTracker

mDataTracker.clearConnections();

packages/apps/Ethernet/src/android/net/server/EthernetService.java:64: cannot find symbol

symbol : method scanInterface()

location: class android.net.EthernetDataTracker

mDataTracker.scanInterface();

target R.java/Manifest.java: Gallery2 (out/target/common/obj/APPS/Gallery2_intermediates/src/R.stamp)

Note: Some input files use or override a deprecated API.

Note: Recompile with -Xlint:deprecation for details.

22 errors

make: *** [out/target/common/obj/APPS/Ethernet_intermediates/classes-full-debug.jar] Error 41

make: *** Waiting for unfinished jobs....

Warning: AndroidManifest.xml already defines versionCode (in http://schemas.android.com/apk/res/android); using existing value in manifest.

Warning: AndroidManifest.xml already defines versionName (in http://schemas.android.com/apk/res/android); using existing value in manifest.

Warning: AndroidManifest.xml already defines minSdkVersion (in http://schemas.android.com/apk/res/android); using existing value in manifest.

Warning: AndroidManifest.xml already defines targetSdkVersion (in http://schemas.android.com/apk/res/android); using existing value in manifest.

What may be the cause, why is the problem with EthernetDataTracker?

RE: RIoTboard - Android KitKat Build on Ubuntu 12.04.5/14.04.5 LTS

salih.mutlu@gmail.com — Mon, 10 Apr 2017 13:58:38 GMT

You mention "element14-provided source code". What do you mean by that, how is that provided?

RE: [One Stop Place] RIoTboard Platform Glossary

stmorgan — Sun, 19 Feb 2017 00:51:52 GMT

It's worth noting that http://riotboard.org is now redirecting to RIoTboard (Element14). The riotboard.org site is still accessible via the Wayback Machine (https://archive.org/ ), although downloads may or may not work.

RE: [One Stop Place] RIoTboard Platform Glossary

stmorgan — Sun, 15 Jan 2017 01:23:42 GMT

A later (Version 2.1) revision of the RIoTboard User Manual is available here:

http://riotboard.org/download/RIoTboard-User-Manual-V2.1.pdf

RE: RIoTboard Yocto Build on openSUSE 13.2 x86_64 Host

stmorgan — Sun, 04 Dec 2016 14:25:53 GMT

After a scant ten months, I attempted to use this procedure only to discover that it no longer works as it did previously:

1. The procedure does create a build, but the resulting SD card image does not work. Note also that the SD card image is now apparently gzipped by default. I was able to manually construct a functional SD card image from the files in the build but there are additional issues....

2. The process above does not generate a build with the same TUNE_FEATURES and TARGET_FPU as it did in February 2016. The thumb, callconvention-hard and cortexa9 TUNE_FEATURES are missing. The TARGET_FPU has changed from vfp-neon to softfp.

3. In Section 5 above (Create a new layer for the custom Linux distribution), the directory structure has apparently changed, so

mkdir -p meta-bsec/recipes-bsec/images

needs to be

mkdir -p meta-bsec/recipes-bsec/image

I came across a thread where someone else has noticed Issue 1 as well:

https://lists.yoctoproject.org/pipermail/meta-freescale/2016-August/thread.html#18848

The OP's solution to add SOC_FAMILY = "mx6:mx6dl" to meta-fsl-arm-extra/conf/machine/imx6dl-riotboard.conf does cause the correct TUNE_FEATURES to be incorporated, although the TARGET_FPU changes from vfp-neon to hard. Unfortunately, I am getting an error during the build which prevents it from completing (this may be a transitory issue concerning file availability at a mirror).

I also noticed an interesting commit to meta-freescale-3rdparty from October 19 2016:

https://github.com/Freescale/meta-freescale-3rdparty/commits/master

imx6dl-riotboard: Migrate to use wic image creator tool

Use wic image creator tool instead of image_types_fsl class to create
sdcard images. wic uses imx-uboot.wks file and this new layout
has only one partition, so all files will be installed on the same
partition. We need to set MACHINE_ESSENTIAL_EXTRA_RDEPENDS to install
kernel image and devitree and u-boot to root part, set wic.gz as
IMAGE_FSTYPES and set correct WKS_FILES.

It isn't obvious whether this is intended to be an additional option or if it is supposed to replace the two-partition scheme used in .sdcard output.

The bottom line is that you will probably have to wade through a fair amount of documentation if you are new to Yocto or even if you haven't used it in a while.