Y2038 bug on embedded platform

Started by pozz in comp.arch.embedded4 weeks ago 3 replies

I'm using facilities to manage timestamps of events. The platform is ARM Cortex-M3 (LPC1788) and I'm using MCUXpresso IDE (so arm-gcc...

I'm using facilities to manage timestamps of events. The platform is ARM Cortex-M3 (LPC1788) and I'm using MCUXpresso IDE (so arm-gcc toolchain). I configured the IDE to use newlib-nano library. It's quite easy to use a time_t variable for a timestamp and use gmtime()/mktime() function to transform the number of seconds from epoch to a broken-down time structure (struct tm, wit


Surplus PCM-4894s

Started by TheCaptain in comp.arch.embedded1 month ago 7 replies

Hi, I have several PCM-4894 SBCs and am open to offers. Location: Ireland. Also, 12" "Toughtouch" and controllers.

Hi, I have several PCM-4894 SBCs and am open to offers. Location: Ireland. Also, 12" "Toughtouch" and controllers.


HP 64000 development system

Started by Mark Griswold in comp.arch.embedded1 month ago 3 replies

I have an old HP64000 development system. Worked last time it was used (about 10 yrs ago). Before I load it into the dumpster, wanted to see if...

I have an old HP64000 development system. Worked last time it was used (about 10 yrs ago). Before I load it into the dumpster, wanted to see if anyone had an interest. Free, just pay for shipping. Mark


U-blox Tech Day Seattle 2017, United States

Started by Sunil Kumar in comp.arch.embedded1 month ago

Attend the upcoming u-blox Tech Day Seattle to learn more about working with u-blox to develop your project in any or all of the following 3...

Attend the upcoming u-blox Tech Day Seattle to learn more about working with u-blox to develop your project in any or all of the following 3 segments: Positioning, Short Range Radio, Cellular (2G/3G/4G). The event will be held on August 24, 2017 at the Impact Hub in Pioneer Square, Seattle, and will commence from 11.00 A.M. Toradex engineers will be on site to present some interesti


NXP Smarter World Tour 2017, United States

Started by Sunil Kumar in comp.arch.embedded1 month ago

NXP's Smarter World Tour brings the Internet of Things to life, with more than 150 demos that include smart home automation, consumer products,...

NXP's Smarter World Tour brings the Internet of Things to life, with more than 150 demos that include smart home automation, consumer products, wearables, automotive, industrial and more. Toradex will show demos including real-time and low-power application using the heterogeneous multi-core architecture on the Colibri i.MX7 and the fast boot demo which boots 1.2 second boot-to-Qt UI on Apalis ...


LWM2M C Language Implementation for the Small Embedded IoT Devices

Started by Anonymous in comp.arch.embedded1 month ago 1 reply

Hi group! As a n00b in the IoT domain I have had trouble finding a suitable open source implementation in C for the LWM2M protocol with DTLS...

Hi group! As a n00b in the IoT domain I have had trouble finding a suitable open source implementation in C for the LWM2M protocol with DTLS support. What I have found so far are following implementations: - Contiki lwm2m: https://github.com/sics-iot/lwm2m-contiki - Wakaama LWM2M: https://github.com/eclipse/wakaama - Awa LWM2M: https://github.com/FlowM2M/AwaLWM2M - Anjay: https://gi


Is there a process for secure firmware install/upgrade for device made offshore?

Started by Anonymous in comp.arch.embedded1 month ago 44 replies

Hi Recently more and more companies want to add security (authentication and/or encryption) to their devices firmware install/update process....

Hi Recently more and more companies want to add security (authentication and/or encryption) to their devices firmware install/update process. Typically this is done by storing a secret encryption key in bootloader or elsewhere in internal MCU flash. This should work if bootloader is installed in secure facility by trusted people. But then manufacturing is outsourced/offshored and t


Digital mic sharing on two MCUs

Started by John Speth in comp.arch.embedded2 months ago 7 replies

Hi there- I have a design inquiry that involves interfacing a pair of digital MEMs PDM microphones to two different MCU's (one for wake word...

Hi there- I have a design inquiry that involves interfacing a pair of digital MEMs PDM microphones to two different MCU's (one for wake word processing and another for speech processing after waking). Such a design would reasonably require two clock sources to the mic. Does anybody know what design strategies exist so that PDM mics can be shared among different downstream audio proc...


Efficient debug log

Started by pozz in comp.arch.embedded2 months ago 14 replies

I usually prints some messages on a free UART used as a debug port. They are very useful during debugging to understand the flow of...

I usually prints some messages on a free UART used as a debug port. They are very useful during debugging to understand the flow of execution. Most of the time, I don't compile the debug log facility in release build. I sometimes need to disable messages from some modules and enable messages from other modules under debugging. Moreover I sometimes need to enable/disable less important m...


Datakey silicon inside

Started by John Speth in comp.arch.embedded2 months ago 6 replies

Hi folks- Does anybody know what memory devices are embedded in the Datakey memory tokens? For example, this...

Hi folks- Does anybody know what memory devices are embedded in the Datakey memory tokens? For example, this part: http://datakey.com/downloads/SST_Series_DS_REVD.pdf which is from datakey.com. I'm pretty sure these devices are just embedded serial EEPROMs but Datakey doesn't reveal the part inside. Thanks - John


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