Category: Hardware

Posted on by Jean-Luc Aufranc (CNXSoft) - 1 Comment on Resources for Qualcomm MSM722x: MSM7225, MSM7227

Resources for Qualcomm MSM722x: MSM7225, MSM7227

Qualcomm MSM722x processors – part of MSM (Mobile Station Modem) series – are mainly used in mobile phones and to a lesser extend in tablets such as WellCoM A800. You won’t find any proper documents or information in Qualcomm website (see Qualcomm MSM page) except the following description: Qualcomm’s Mobile Station Modem™ (MSM™) chipset solutions enable cost-effective mobile handsets with advanced capabilities that leverage 3G technology yet minimize development time. Offered on four discrete platforms for tailored functionality, each chipset is integrated with a select set of features from Qualcomm’s multimedia suite of applications to enrich the user experience while maintaining cost-target objectives. So if you plan on developing on that platform, you’ll need to visit Qualcomm developer website to get most of the information you’ll need. There are two chipsets with similar characteristics. MSM7225 The MSM7225 chipset includes a 528 MHz ARM11 processor with a floating point unit (FPU).  […]

Posted on by Jean-Luc Aufranc (CNXSoft) - 2 Comments on WellcoM WePad A800 Android 2.2 Tablet Video Review

WellcoM WePad A800 Android 2.2 Tablet Video Review

More and more decent (e.g. with capacitive multi-touch screen, decent processor…) and cost-effective android tablets are hitting the market such as Archos Gen8 Series. It might be difficult to obtain Archos 70 in some countries in Asia. But not is all lost as product such as the WellcoM WePad A800 are available in Thailand (and probably other countries). This tablet based on Qualcomm MSM7227 @ 600 Mhz runs on Android 2.2. The device comes with 512 MB DDR RAM, 512 MB Rom, a 7″ multi-touch capacitive touch screen (800 x 480) , Wifi, Bluetooth, 2G/3G network support. I discovered this product in a shop in Chiang Mai yesterday. I tried it a bit, it was very smooth and responsive. It sells for 15900 Baht (530 USD / 383 Euros) with a free bluetooth headset. The following videos (In Thai only) reviews the device. The reviewers runs a lot of benchmark […]

Posted on by Jean-Luc Aufranc (CNXSoft) - No Comments on Accurate Time Keeping in Embedded Systems

Accurate Time Keeping in Embedded Systems

In many embedded systems, there is a need to keep accurate time/date. This is often performed using an RTC (Real-Time Clock). However,  uncalibrated RTC are not that accurate. For example, ST Microelectronics M41T94 RTC datasheet explains that: Uncalibrated clock accuracy will not exceed ±35 ppm (parts per million) oscillator frequency error at 25°C, which equates to about ±1.53 minutes per month. . In order to improve the accuracy, you’ll need to calibrate the crystal for each board at the factory using a frequency counter, that will greatly improve accuracy, for M41T94: When the Calibration circuit is properly employed, accuracy improves to better than ±2 ppm at 25°C. However, calibrating the crystal will further increase the manufacturing costs. Another way to have a very accurate time keeping, is to use the power supply frequency (50 Hz/60 Hz) which is extremely accurate due to interoperability requirements between electricity providers. In the diagram […]

Posted on by Jean-Luc Aufranc (CNXSoft) - 1 Comment on Archos 101 Archos 70 with Android 2.2

Archos 101 Archos 70 with Android 2.2

In the previous blog post about Archos 70 Video Review, I mentioned the device was running on Android 2.2. This is not currently accurate, as the device now ships with Android 2.1, but will be upgradable to Android 2.2 soon after. [ad#Google Adsense – Wide Banner] In the meantime, here’s an another Charbax’s video about Archos Gen8 devices (i.e. Archos 28,Archos 32, Archos 43, Archos 70and Archos 101) running a beta version of Android 2.2 for this series of devices. Jean-Luc Aufranc (CNXSoft)Jean-Luc started CNX Software in 2010 as a part-time endeavor, before quitting his job as a software engineering manager, and starting to write daily news, and reviews full time later in 2011. www.cnx-software.com

Posted on by Jean-Luc Aufranc (CNXSoft) - No Comments on Archos 70 Internet Tablet Video Review

Archos 70 Internet Tablet Video Review

Archos as just released a new 7″ Android Tablet. This device costs around 275 USD (249 Euros), which is a pretty good price for a device based on an ARM Cortex A8 at 1 GHz running Android 2.2, a capacitive touch screen (800×480), HDMI output (Up to 720p), built-in wifi (802.11n) and bluetooth 2.1 as well as a front facing camera. Bear in mind that you won’t be able to take pictures or videos with this device since there is no camera on the back of the device. Go to Archos website to get the full technical specs of Archos 70. Here are two videos of the device by Charbax. The first video shows web browser, video playback, google app market place, video playback on TV thru HDMI and facebook. The second video shows the dolphin web browser used with a bluetooth keyboard, video chat with fring (still have some […]

Posted on by Jean-Luc Aufranc (CNXSoft) - No Comments on Netgem Set-top-box N5000 – Toshiba Places

Netgem Set-top-box N5000 – Toshiba Places

Mid-september, Netgem showcased their new set-top box at IBC 2010: the Netbox N5000 Internet/TV Adaptor. A modified version of this Set-top box will be used by Toshiba (Toshiba places) and be available for purchase for 99 Euros starting in October 2010 in France and later in 2011 in some other Europeans countries. [ad#Google Adsense – Wide Banner] First let’s have a look at the casing (Not the one used by Toshiba places). The front panel has the Power LED, a USB port and the remote sensor. They’ll either provide Infrared or RF remotes depending on the end customer requirements. The back of the set-top box features TV In/Out, Digital Audio (S/PDIF) output, HDMI output, an Ethernet port and the power jack (+12V). Their product brief also mentions a USB port on the rear as an option and Wifi support (802.11n). The Netbox N5000 hardware is based on Sigma Designs SMP8655 […]

Posted on by Jean-Luc Aufranc (CNXSoft) - 1 Comment on D-link Boxee Box available for pre-order

D-link Boxee Box available for pre-order

D-link Boxee set-top-box is available for  pre-order on amazon for 199 USD. It can only be pre-ordered to addresses in the US for now and shipments should start in November. D-Link disclosed that its device is based on an Intel Atom processor CE4100 (Sodaville), not an ARM or MIPS processor as many other STBs do. It is running on embedded Linux. Key features listed by D-Link for the device (beside its weird shape) are basically those of the Boxee media-streaming software on which it’s based: Enjoy thousands of shows available for free from your favorite networks, ready to watch at any time Check-out free movies from the web & watch new releases in stunning HD from premium movie services Play videos, songs, or pictures from your computer or home network Plays any non-DRM video, music, and photos and media from anywhere on the Internet The device features the following input/output and […]

EmbeddedTS embedded systems design