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1
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0answers
139 views

Error-Detection Circuit — How does this work?

I'm currently studying for finals (I have the solutions here already, so this isn't helping me bypass doing homework or anything like that.) My professor has done an unsatisfactory job explaining ...
6
votes
5answers
221 views

Programs resistant to hardware issues

I recall at one point reading about embedded development where the programmer took into account things like memory corruption and possibly other hardware issues. For example: If an instruction in ...
2
votes
3answers
100 views

VHDL Error (Simple Expression Expected)

I'm new to VHDL and I'm having a problem with my code that I can't seem to fix. We're supposed to do this using either selected signal assignment or table lookup. Mine is kind of a combination of the ...
1
vote
0answers
165 views

Forward Error Correction code, Reed Solomon, Turbo Code, Low-density parity-check

I am new to FEC (Forward Error Correction). Pointers highly appreciated. I am experimenting software with configurable "error protections". Result improving as setting raise to 40%. Still not ...
4
votes
3answers
402 views

MicroSD with ECC

Some MicroSD cards (mostly Transcend) claim to have an ECC controller on the chip. I was wondering how this works? Do they verify all data written to it, and automaticly relocate the sectors to ...
2
votes
3answers
1k views

Improving throughput of a Bluetooth Low Energy Connection

Follow-Up question from Stackoverflow I am trying to write a characteristic value repeatedly over a short amount of time. Different sources tell that rates between 200 and 305 kbit / s should be ...
1
vote
1answer
959 views

LCD driver code for interfacing LCD 16*2 with ATmega8

I'm new in Embedded systems I write this code and tried to compile it in "AVR Studio" but I have one error and I can't correct it the error is :"expected declaration or statement at end of input" and ...
5
votes
2answers
765 views

RS232 vs USB CDC quality of service / should messages contain a checksum?

Does USB have a quality of service guarantee for data sent between my USB-CDC device and the USB host? I know with traditional RS232 in a noisy situation (e.g. automotive diagnostic port) bad bits ...
4
votes
2answers
168 views

How can I add ECC to my packets?

I have been looking into using LDPC's in some of my projects and have had some questions come up. Currently my structure looks something like this: I am then able to have hardware wake when it sees ...
2
votes
2answers
263 views

ripping audio cd gives different checksum. Real? fake? Underlying reason?

Today I was talking about ripping CDs with a colleague, and the fact that if you rip the same CD twice the md5sum is different. This is what I personally experienced, and I knew out of reading around, ...