CRC calculation

Started by Jack in comp.arch.embedded4 months ago 11 replies

Hello, I'm working on a 16bit microcontroller. I need to check for flash corruption. Flash is adressed at words (16bits). The linker calculate...

Hello, I'm working on a 16bit microcontroller. I need to check for flash corruption. Flash is adressed at words (16bits). The linker calculate a CRC_CCITT and put the result in a cell of the flash. The algorithm that the chip manufacurer gave us is painfully slow (it loops on every bits of the words): size = FLASH_END_ADDR - FLASH_START_ADDR; //32kB in total segment_p = FLASH_START_ADD...


MSP430g2553 and Matlab

Started by engineergc in comp.arch.embedded4 months ago 4 replies

Dear All; I am making red round object tracking project by using MSP430G2553 and Matlab. When red round object moves, a car will track red...

Dear All; I am making red round object tracking project by using MSP430G2553 and Matlab. When red round object moves, a car will track red round object. Project is consist of from two parts as image processing and motion part. In motion part I am using L298N motor driver card, MSP430G2553. and a car that consist of from 2 wheels with 2 dc motors and a swivel castor. Image processing part in ...


Ti Pi Week Rounded to 5 Days

Started by rickman in comp.arch.embedded4 months ago 3 replies

I guess that's one day per digit in the usual pi value 3.14159... oh wait! They're one day short!!! I tried to order the MSP-EXP430FR4133...

I guess that's one day per digit in the usual pi value 3.14159... oh wait! They're one day short!!! I tried to order the MSP-EXP430FR4133 under the Pi-week special which requires entering a coupon code to get the "special" price. No go. It says the code is expired. The Pi-week page says it is good until the 19th, so it should have worked. Of course there's no way to reach TI sinc...


Language feature selection

Started by Don Y in comp.arch.embedded4 months ago 201 replies

A quick/informal/UNSCIENTIFIC poll: What *single* (non-traditional) language feature do you find most valuable in developing code? (and,...

A quick/informal/UNSCIENTIFIC poll: What *single* (non-traditional) language feature do you find most valuable in developing code? (and, applicable language if unique to *a* language or class of languages)


Automotive Software and the Law

Started by Tim Wescott in comp.arch.embedded4 months ago 25 replies

AFAIK there are no laws that regulate automotive software, specifically -- just threats of lawsuits if a car kills someone, and systems-level...

AFAIK there are no laws that regulate automotive software, specifically -- just threats of lawsuits if a car kills someone, and systems-level requirements that cover cases like Volkwagen and their dirty diesels. Am I right? Or are there safety (or other) regulations that extend their tentacles specifically into automotive software, the way DO-128 does in avionics, and the various IEC s...


Watchdog for an embedded Linux-based system

Started by pozz in comp.arch.embedded4 months ago 10 replies

I have a Linux-based SOM that intregrates complexity (CPU, memories, Ethernet PHY and so on) and I'm going to design a carrier board for...

I have a Linux-based SOM that intregrates complexity (CPU, memories, Ethernet PHY and so on) and I'm going to design a carrier board for it. I'd like to add an external watchdog on the carrier board for two purposes: - automatically rerun the system when the applications running on Linux crash for some reasons (mainly bugs) - automatically rerun the system when the system is not able to...


Telephony Abbreviations

Started by rickman in comp.arch.embedded5 months ago 4 replies

4WTO - Four wire transmission only In the context I see this I expect it really means bidirectional analog audio with no handshake signals. ...

4WTO - Four wire transmission only In the context I see this I expect it really means bidirectional analog audio with no handshake signals. Is that right? I can't find a definition for this other than the first line above. -- Rick C


68K disasm

Started by Don Y in comp.arch.embedded5 months ago 10 replies

An old client contacted me to "decompile" some 68K code for a product line he purchased (but failed to verify that ALL the sources were...

An old client contacted me to "decompile" some 68K code for a product line he purchased (but failed to verify that ALL the sources were available! So, there are portions of the production image that a "build" fails to recreate) "Sorry, not interested" [the first time I reverse-engineered a product was an "interesting" experience; the second time was "skill enhancing"; a THIRD time would...


CFP: The 2017 International Workshop on Embedded Multicore Systems (ICPP-EMS 2017)

Started by Anonymous in comp.arch.embedded5 months ago

Apologies for multiple posting. ===================================================================== ICPP-EMS'2017 The 2017 International...

Apologies for multiple posting. ===================================================================== ICPP-EMS'2017 The 2017 International Workshop on Embedded Multicore Systems to be held in conjunction with The 46nd International Conference on Paral


Clock cycles

Started by arshadnatasha in comp.arch.embedded5 months ago 6 replies

Hi all: I have been stuck on this problem for a while - can someone help me figure this out? For the following instruction, the instruction set...

Hi all: I have been stuck on this problem for a while - can someone help me figure this out? For the following instruction, the instruction set manual says it should take 5 clock cycles, whereas according to my measurements using an oscilloscope, I should get 4 clock cycles. What could be the reason for the difference? I am using TelosB. add #1, -4(r4) -------------------------------...


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