Search found 11 matches

by BulbChangeExpert
Fri Aug 25, 2017 11:20 pm
Forum: STM32F4 Boards
Topic: STM32F407VET6 has 1MB flash !
Replies: 13
Views: 1018

Re: STM32F407VET6 has 1MB flash !

i used stm32flash-0.5-win64.zip via FT232 it apparently can calculate, read and write the real memory without taking into account IDs and stuff, you can even burn past a bootloader (specifying a start address) but the ST Link Utility (the actual GUI program) can read the whole memory, it can even (u...
by BulbChangeExpert
Fri Aug 25, 2017 4:55 pm
Forum: STM32F4 Boards
Topic: STM32F407VET6 has 1MB flash !
Replies: 13
Views: 1018

Re: STM32F407VET6 has 1MB flash !

I wonder if that "VG" marking on the top of the chip is any telling of what mask they used to manufacture it... :shock: there are VG and VQ ... from both Korea and Philippines (the PHL on mine or KOR on the internet (or China (CHN) and Malaysia (MYS) on my blue pills)), that's what google images di...
by BulbChangeExpert
Fri Aug 25, 2017 4:35 pm
Forum: STM32F4 Boards
Topic: STM32F407VET6 has 1MB flash !
Replies: 13
Views: 1018

Re: STM32F407VET6 has 1MB flash !

victor_pv wrote:
Fri Aug 25, 2017 4:27 pm
I wonder if that "VG" marking on the top of the chip is any telling of what mask they used to manufacture it...
:shock:
by BulbChangeExpert
Fri Aug 25, 2017 4:34 pm
Forum: STM32F4 Boards
Topic: STM32F407VET6 has 1MB flash !
Replies: 13
Views: 1018

Re: STM32F407VET6 has 1MB flash !

Making a mask for achip is expensive, thus manufacturers only use as few as possible. OTOH, marketing is pushing for having an orthognal matrix with pin counts and memory size as axis, in order to create a range that they can charge more or less tot he customer... sounds pretty logic F101 which is ...
by BulbChangeExpert
Fri Aug 25, 2017 4:26 am
Forum: STM32F4 Boards
Topic: STM32F407VET6 has 1MB flash !
Replies: 13
Views: 1018

Re: STM3232F407VETT6 has 1MB flash !

The F103C8 is known to have 128kB flash when the spec says there should only be 64k both my blue pills have 128k, they look the same but bought 1-2 years apart also an ARM MCU with 128kB of flash IS worth buying, in my opinion more RAM i shoulded state that the f407vet is supposed to have 192kB of ...
by BulbChangeExpert
Fri Aug 25, 2017 12:58 am
Forum: STM32F4 Boards
Topic: STM32F407VET6 has 1MB flash !
Replies: 13
Views: 1018

STM32F407VET6 has 1MB flash !

...again with my black stm32f407vEt6, i'm learning inaccuracies about it more than how to make Eclipse work, btw, the usual formula:: "i don't know if it was already spotted out but..." there's 1MB (1024kB) of flash instead of 512kB :? !!! THIS... is a nice surprise, the ST-Link Utility insists abou...
by BulbChangeExpert
Mon Aug 21, 2017 12:25 pm
Forum: STM32F4 Boards
Topic: USB not working bacause of wrong resistors
Replies: 9
Views: 701

Re: USB not working bacause of wrong resistors

WOW!! my first problem discovered in some HW\SW so far... my granpa would be so proud LOL :mrgreen: :mrgreen:

they must have used a wrong SMD resistor reel, i've read about (every) people beeing capable of connect it
by BulbChangeExpert
Mon Aug 21, 2017 12:19 pm
Forum: New users MUST post here first, and let us know a bit about you and your projects
Topic: Hello from Italy (Sicily)
Replies: 4
Views: 190

Re: Hello from Italy (Sicily)

oh.. good to know, there always be a lot of confusion with the developing community and google is not good at all at saying "use this! wink wink"
by BulbChangeExpert
Mon Aug 21, 2017 3:41 am
Forum: STM32F4 Boards
Topic: USB not working bacause of wrong resistors
Replies: 9
Views: 701

USB not working bacause of wrong resistors

Not sure this was already spotted out but "repeating is good" they say. With the STM32F407VET6 black board i had USB connection troubles, it wont be detected even if configured with BOOT-0 at 1 and BOOT-1 at 0... just "descriptor not responding" and stuff, i immediatelly tougth about an electrical\e...
by BulbChangeExpert
Mon Aug 21, 2017 3:27 am
Forum: New users MUST post here first, and let us know a bit about you and your projects
Topic: Hello from Italy (Sicily)
Replies: 4
Views: 190

Re: Hello from Italy (Sicily)

Actually no... not at the moment btw, i'm just challenging myself and i discovered a "problem" :lol: that i want to share about the f4 black board (i couldn't find anyone talking about it so i thougt it was worth the registration.
...thread coming in a moment