Testing Category - Page 157 of 169 - CNX Software

February 6, 2013February 6, 2013 by Jean-Luc Aufranc (CNXSoft) - 40 Comments

U-boot, Linux Kernel, and Android Patches for Freescale i.MX6 HDMI TV Dongles

We can now get some quad core Android mini PCs (e.g. Hi802, GK802) featuring Freescale i.MX6Q processor, Freescale has released full documentation and source code its development platforms, Hi802 / GK802 HDMI TV dongles are easily hackable, and there’s even an Ubuntu image for the devices. So it looks pretty good ,right? Well almost.. there are some patches and config for GK802 that have not been released by Richtechie, so we can’t modify the bootloader and Linux kernel. But this may change, as ARMTvTech forum user hste noticed some Freescale i.MX6 HDMI dongle patches om IMX Community website. Even though I’m not sure those are fully compatible with Hi802 / GK802, this could be a starting point. Today, I’ll provide the instructions to build u-boot, the linux kernel and Android ICS with those patches in a machine running Linux 12.04 64-bit. Patch Sets Descriptions There are two set of patches that […]

February 1, 2013February 1, 2013 by Jean-Luc Aufranc (CNXSoft) - 2 Comments

Linaro 13.01 Release with Linux Kernel 3.8 and Android 4.2.1

Linaro has just announced release 13.01 which includes Linux Kernel 3.8-rc4 and Android 4.2.1. A lot of work seems to have gone in Arndale board and OpenEmbedded ARMv8. It’s the first time an Ubuntu image is released for Arndale Cortex A15 development board. One the kernel side some Android upstreaming work has been done, as well as some fixes for eMMC, and code for ST Ericsson Novathor 8500 SoC has been reorganized. Version 14 of the big.LITTLE MP (Multi Processing) has been released. The LEG has done further work on Linaro UEFI and GRUB. Here are the highlights of this release: Android Platform Work The first step of the android-build front-end update for new build program has been landed. Origen and Versatile Express manifests have been consolidated into a single manifest. linaro-android-tools were developed to improve development time for kernel developers. See Kernel Update Tools for details. The android-build scripts […]

January 30, 2013 by Jean-Luc Aufranc (CNXSoft) - 3 Comments

How to Access the Serial Console in MK808 mini PC

Omegamoon has done a pretty neat hack on MK808 Rockchip RK3066 mini PC to connect a Sparkfun USB to TLL board and access the serial console for bootloader and kernel debugging. The first thing he had to do was to open the device, remove the heatsink, and locate the Rx/Tx pads on the board. The Rx and Tx pins are accessible through pads, not via through holes, so it’s just a little more difficult to solder, but nothing too challenging. He and his brother also soldered another cable to the ground. Then they inserted a 6-pin header via the ventilation holes of the device, soldered the 3 wires to the header, and fix the latter to the casing. Finally, they just inserted the debug board in the pin header, connected the USB cable to their PC, and started minicom (or equivalent) to start accessing the serial console. I think that […]

January 26, 2013March 28, 2013 by Jean-Luc Aufranc (CNXSoft) - 9 Comments

Raspberry Pi Now Has Experimental Support for VP6, VP8, MJPEG and Ogg Theora Video Codecs

The guys working on the Raspberry Pi (mainly dom) have added preliminary support for VP6, VP8, MJPEG, and Ogg Theora free video codecs, as well as Ogg Vorbis audio codec. Unlike H.264, MPEG-2 and VC1, those are not handled by the hardware video decoder in Broadcom BCM2835 processor, but are accelerated by the Videocore GPU. This means that only SD (and possibly 720p) videos are supported for those codecs. The best way to get support is probably to patiently wait for the Raspberry Pi foundation to release a new Raspbian image, but in case you couldn’t possibly wait, here are the steps to follow: Download and run Hexxeh’s rpi-update script in the Raspberry Pi in order to get the very latest build:

wget https://github.com/Hexxeh/rpi-update/raw/master/rpi-update
chmod 755 rpi-update
sudo ./rpi-update

wget https://github.com/Hexxeh/rpi-update/raw/master/rpi-update

chmod 755 rpi-update

sudo ./rpi-update

Add the following two lines to /boot/config.txt:

start_file=start_x.elf
fixup_file=fixup_x.elf

1 2	start_file=start_x.elf fixup_file=fixup_x.elf

Reboot the Raspberry Pi The GPU firmware is now updated, but you still need the latest version of omxplayer. […]

January 24, 2013January 25, 2013 by Jean-Luc Aufranc (CNXSoft) - 5 Comments

Embedded Linux Conference 2013 Schedule

The Embedded Linux Conference (ELC 2013) will take place on February 20 – 22, 2013 at Park 55 Hotel in San Francisco, California. ELC consists of 3 days of presentations, tutorials and sessions. There will be over 50 sessions during those 3 days. I’ll highlight a few sessions that I find particularly interesting, and that did not get presented at ELCE 2012 (AFAICR). February 20 11:00 – Anatomy of the arm-soc git tree by Olof Johansson, Google We are now two years into the new maintainer model for ARM platforms, and we have settled down into a workflow that maintainers have adjusted well to. Still, when new platforms arrive, or when maintainer ship changes hands, there’s sometimes a bit of ramp-up in getting used to how we organize our git tree and how we prefer to see code submitted to fit that model. This presentation will give an overview of […]

January 23, 2013January 23, 2013 by Jean-Luc Aufranc (CNXSoft) - 24 Comments

How to Access the Serial Console in HI802 / GK802 mini PC

One of the advantage of HiAPad Hi802 (aka Zealz GK802) is that it provides access to UART and I2C pins via through holes on the board. UART4 Tx and Rx pins give you access to the serial console which is a must for bootloader (U-boot), and kernel development or for debugging. The first thing is the open the casing and locate the debug pins on the board. The very best way is probably to solder a pin header, but since I don’t have header, nor soldering iron, I’ve done it the “MacGyver” way with 3 wires connected to TxD, RxD and GND, and some sticky tape. You can now insert the other side of the wires into your USB to TLL debug board (GND <-> GND, Tx <-> Rx, and Rx <-> Tx), and connect it to your Windows or Linux PC. The serial board should be recognized as a […]

January 19, 2013May 29, 2017 by Jean-Luc Aufranc (CNXSoft) - 38 Comments

GPUs Comparison: ARM Mali vs Vivante GCxxx vs PowerVR SGX vs Nvidia Geforce ULP

I’m always very confused when it comes to comparing GPUs in different SoCs, and I could not really find comparisons on the web, so I’m going to give it a try even though, as you’re going to find out, it’s actually quite a challenge. There are mainly 4 companies that provide GPUs: ARM, Imagination Technologies, Vivante and Nvidia. [Update: Two comments mentioned Qualcomm Adreno and Broadcom VideoCore are missing from the list. Maybe I’ll do an update later]. Each company offers many different versions and flavors of their GPU as summarized below. ARM Imagination Technologies Vivante Nvidia Mali-400 Series: Mali-400 MP Mali-450 MP Mali-600 Series Mali-T604 Mali-T624 Mali-T628 Mali-T658 Mali-T678 PowerVR SGX Series 5: SGX520 SGX530 SGX531 SGX535 SGX540 SGX545 PowerVR SGX Series 5XT: SGX543MP1-16 SGX544MP1-16 SGX554MP1-16 PowerVR SGX Series 6: G6200 G6230 G6400 G6430 G6600 2D graphics: GC300 GC350 3D graphics: GC400 GC800 GC1000 GC2000 GC4000 ULP GeForce (Tegra […]

January 18, 2013January 19, 2013 by Jean-Luc Aufranc (CNXSoft) - 24 Comments

HiAPAD Hi-802 mini PC Unboxing and Review

Kimdecent has just sent me one HiAPAD Hi-802 mini PC powered by Freescale i.MX6 Quad, and running Android 4.0.4 ICS. This is the first quad core HDMI TV dongle available on the market, and it can run both Android and Linux distributions such as Ubuntu since Freescale released the source code for i.MX6 processor family. Today, I’ll just show some pictures of the device, and review the device by running some tests in Android. I’ll try the Ubuntu 11.10 image release for GK802 another day. Hi-802 Unboxing I received the package by DHL within 3 days, and it includes Hi802, a 5V/2A power supply, and a USB to microUSB cable. A closer look at the device reveals an aluminum casing with lots of ventilation holes (really needed since the device gets pretty hot). Hi802 features an HDMI male connector, a microSD card slot on the side, a full USB port, […]