External SPI Flash for storing data

Started by pozz in comp.arch.embedded2 weeks ago 15 replies

I have a board with Cortex-M3 NXP LPC1875 MCU with 512kB internal Flash, one 8MB external SDRAM and 2MB external SPI Flash. The external Flash...

I have a board with Cortex-M3 NXP LPC1875 MCU with 512kB internal Flash, one 8MB external SDRAM and 2MB external SPI Flash. The external Flash is connected to a normal SPI, not SPIFI (in other words, it isn't mapped to the internal address space). Insted the SDRAM is mapped to the internal address space, starting from address 0xA000 0000. The application will use a 480x272 RGB LCD conne...


Data serialization for embedded platforms: ASN.1, JSON, Protocol Buffers....

Started by pozz in comp.arch.embedded2 weeks ago 1 reply

It's a long time I work with embedded platforms, however I never used a well-defined and "standard" data serialization format. I often had the...

It's a long time I work with embedded platforms, however I never used a well-defined and "standard" data serialization format. I often had the need to exchange data between platforms (Wifi, Ethernet, RS485...) and I always find a custom solution. I perfectly understood the problem with this approach. Keeping the two (or more) side synchronized is very difficult and error-prone. When the...


Update about Ada-Europe Conferences 2019 and 2020

Started by Dirk Craeynest in comp.arch.embedded3 weeks ago

Subject: Update about Ada-Europe Conferences 2019 and 2020 The 24th edition of Ada-Europe's International Conference on Reliable Software...

Subject: Update about Ada-Europe Conferences 2019 and 2020 The 24th edition of Ada-Europe's International Conference on Reliable Software Technologies took place on 11-14 June in Warsaw, Poland, with considerable success. The conference, graciously hosted by the Institute of Aviation, had nearly 100 participants, enjoyed a rich technical and social program, and saw much active interactio...


Dynamic allocation and newlib-nano

Started by pozz in comp.arch.embedded3 weeks ago 10 replies

I normally don't use dynamic allocation in embedded projects, however there are situations where this isn't possible. I'm working on a...

I normally don't use dynamic allocation in embedded projects, however there are situations where this isn't possible. I'm working on a project with LPC1768 Cortex-M3 MCU that features 32kB+32kB RAM. I'm using lwip+mbedTLS to make a TLS connection to AWS IoT Core through Ethernet. After a precise allocation of data blocks (incoming Ethernet packets, outgoing packets and so on), it see...


Boeing 737 Max software fix fails... again

Started by Clifford Heath in comp.arch.embedded3 weeks ago 5 replies

Just when you thought it was safe to fly again... It make me think that every time you add code to close a loop-hole, you open new,...

Just when you thought it was safe to fly again... It make me think that every time you add code to close a loop-hole, you open new, smaller loopholes around the boundaries. Clifford Heath.


GE Smart Light Bulb reset

Started by Clifford Heath in comp.arch.embedded4 weeks ago 11 replies

It took a very long time to realise that this wasn't a bad parody. If you were the engineer who implemented this, kill yourself. It's...

It took a very long time to realise that this wasn't a bad parody. If you were the engineer who implemented this, kill yourself. It's not a sin; you have no soul anyway.


Anybody here using STM32F4xx parts ?

Started by boB in comp.arch.embedded1 month ago 9 replies

Using the STM32F443 Cortex M4 with DMA2 feeding TIM1 and TIM8 CCRx registers for PWM generation. Curious if anybody here is using these...

Using the STM32F443 Cortex M4 with DMA2 feeding TIM1 and TIM8 CCRx registers for PWM generation. Curious if anybody here is using these parts as well ? boB


H8S2676 faulty chips

Started by Anonymous in comp.arch.embedded1 month ago 19 replies

We use the Hitachi H8S2676 chip in one of our products and a while ago Renesas told us the chip was going out of production. Someone here forgot...

We use the Hitachi H8S2676 chip in one of our products and a while ago Renesas told us the chip was going out of production. Someone here forgot to do a lifetime buy from them in time but we recently did a lifetime buy of several thousand from a third party company. In the first production run of over 100 boards, every single one failed the manufacturing test. It seems at least o


Press Release - Reliable Software Technologies, Ada-Europe 2019

Started by Dirk Craeynest in comp.arch.embedded1 month ago

----------------------------------------------------------------------- FINAL Call for Participation ...

----------------------------------------------------------------------- FINAL Call for Participation *** UPDATED Program Summary *** 24th International Conference on Reliable Software Technologies - Ada-Europe 2019 11-14 June 2019, Warsaw, Poland http://www.ada-europe.org/c...


Static JSON parser for embedded

Started by pozz in comp.arch.embedded2 months ago 1 reply

Maybe in this group someone could be interested. https://groups.google.com/forum/#!topic/comp.lang.c/6QtD5xZQhPU

Maybe in this group someone could be interested. https://groups.google.com/forum/#!topic/comp.lang.c/6QtD5xZQhPU


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