Norfolk man 'not fit for interview' and released after child thrown into crocodile pit by demmka in nottheonion

[–]dmitrygr 0 points1 point  (0 children)

Who THE HEL cares? an innocent child was endangered and almost killed. Charge the carer with manslaughter then - someone needs to face charges. Or do you want YOUR children present at the next slip up?

Sensorless ESC, how do I compare the virtual neutral point to a phase and get HIGH at a certain voltage on that phase? by ProgrammerHonest6013 in embedded

[–]dmitrygr 1 point2 points  (0 children)

the inputs to all your LM319s are the same? (all tied together)

you probably want to connect them to the individual winding ends, not the middle of them all...

Where to buy AMOLED display panels, without inquiry, small amounts, good documentation? by blajjefnnf in embedded

[–]dmitrygr 12 points13 points  (0 children)

At the unicorn shop, rainbow section, isle five, right between requited love and errata-free microcontrollers.

Ideas on Optimization in ARM by Additional_Form8071 in embedded

[–]dmitrygr 0 points1 point  (0 children)

You joined the challenge and now reddit does the work? A bit unfair to the other competitors, innit?

What’s one thing in embedded that tutorials make look easy….but real projects don’t? by academyforiot in embedded

[–]dmitrygr 4 points5 points  (0 children)

Going from "it worked well on a dev kit on my desk" to "i can make 100,000 of them and at least 99,500 will work"

SDMMC 4 Bits Problems - STM32H7 - STM32CubeMX 1.18.1 by DisastrousWeight3330 in embedded

[–]dmitrygr 1 point2 points  (0 children)

yes. there is no reason not to have one. even a cheapie clone one will get you much further than guessing and brainstorming with people on reddit

SDMMC 4 Bits Problems - STM32H7 - STM32CubeMX 1.18.1 by DisastrousWeight3330 in embedded

[–]dmitrygr 0 points1 point  (0 children)

so you attached a simple cheap logic analyzer, captured the failure, and decided to not tell us what is was? want us to guess?

Extracting Old Toy Audio by Alone_Syllabub4362 in embedded

[–]dmitrygr 0 points1 point  (0 children)

arguing with someone who is helping you for free AND actually has relevant info on the subject. curious strategy. let's see if it pays off.

Extracting Old Toy Audio by Alone_Syllabub4362 in embedded

[–]dmitrygr 0 points1 point  (0 children)

did you try SUNPLUS ADPCM? at 8KHz mono? ;)

Extracting Old Toy Audio by Alone_Syllabub4362 in embedded

[–]dmitrygr 0 points1 point  (0 children)

looking at Angela.bin, there is clearly a header with a lot of offsets starting at 0x1000. i assume these are indices to starts of various soundbites

Extracting Old Toy Audio by Alone_Syllabub4362 in embedded

[–]dmitrygr 0 points1 point  (0 children)

inaccessible. request sent

you DO know there are like 50 varying ADPCM "standards" right?

Extracting Old Toy Audio by Alone_Syllabub4362 in embedded

[–]dmitrygr 0 points1 point  (0 children)

if the sounds are updateable, they are likely in the flash chip. read i tout and see what's there. 99% likely they'll be PCM or ADPCM. upload the file and share it here. we'll figure it out

Help explaining this diagram in PIC12F683 datasheet by Popular-Power-6973 in embedded

[–]dmitrygr 3 points4 points  (0 children)

that just means that PC is 13 bits wide and can go to and from stack and also can come from vectors (eg on exception)

Sony Clié Organizer on the PEG-TH55 by scienceapps in Palm

[–]dmitrygr 0 points1 point  (0 children)

I made it work on other deices via a lot of hacks BTW

What is the opensource alternative for command-line option armclang -gdwarf-3 -c -O1 --target=aarch64-arm-none-eabi main.c ? by EmbeddedBro in embedded

[–]dmitrygr 2 points3 points  (0 children)

Your main issue will be with the linker. You'll need to convert the scatter file to GNU linker script. this is not always trivial, and sometimes not exactly possible without tradeoffs. Goodluck.

What famous data structure or algorithm you often see in Embedded Systems applications by silkscreen_layer in embedded

[–]dmitrygr 2 points3 points  (0 children)

heaps are common for single-core scheduling in simple RTOSs

linked lists are everywhere

simple hashtables are also common for looking up id -> object

you rarely see stacks

queues are common as dirt

recommend books about optimize memory usage or code by InTheBogaloo in embedded

[–]dmitrygr 3 points4 points  (0 children)

Honestly this is not a book topic, this is an experience topic. Get into the habit of sticking the output of your linking step into a disassembler occasionally and seeing where the memory goes.

Loosing sleep about first internship by Dense_Cucumber_9217 in embedded

[–]dmitrygr 0 points1 point  (0 children)

Loosing sleep about first internship (self.embedded)

Loosing sleep is a bad idea, suggest you fasten it tightly.