Search found 1192 matches

by martinayotte
Wed Aug 16, 2017 5:52 pm
Forum: Libraries & Hardware
Topic: Adafruit_ILI9341_STM - improvements
Replies: 14
Views: 354

Re: Adafruit_ILI9341_STM - improvements

@Manny, why are you posting 3 times the same post using replies ?
by martinayotte
Wed Aug 16, 2017 5:36 pm
Forum: Projects
Topic: Stm32duino with Android, how to use USB serial on Android
Replies: 9
Views: 209

Re: Stm32duino with Android, how to use USB serial on Android

not that bad, on product specification it's said to have up to 2Mbps rate :) if i output qvga 320x240 it's said to have 3-4kB per frame, with framerate 24 it's just 72~96kB/s I think your calculations are a bit wrong ! Maybe you're confused with pixels/bytes/bits ... :ugeek: A 320x240 has 76800 pix...
by martinayotte
Tue Aug 15, 2017 4:19 pm
Forum: Projects
Topic: Stm32duino with Android, how to use USB serial on Android
Replies: 9
Views: 209

Re: Stm32duino with Android, how to use USB serial on Android

video transmitter via nRF24L01 on bluepill and ov2640 with mjpeg format
Don't expect a RF24L01 been able to transmit video, bandwidth is too limitted ! :ugeek:
by martinayotte
Sun Aug 06, 2017 8:47 pm
Forum: General discussion
Topic: STM32F4 support and DFU
Replies: 20
Views: 295

Re: STM32F4 support and DFU

The main reason of the bootloader is that F1xx doesn't have DFU in silicon first stage loader, while the F4xx provide DFU even with empty flash.
You can still wish to have a bootloader in F4xx if you don't want having to press the BOOT0 button and have automatic DFU.
by martinayotte
Tue Aug 01, 2017 1:35 pm
Forum: General discussion
Topic: [SOLVED] Is private message always working?
Replies: 5
Views: 132

Re: Is private message always working?

In many forum frameworks, the PM stays in "outbox" until the recipient actually reads it.
If the recipient doesn't reads it, it will stay there forever.
In fact, that is actually useful, it is a way to know if recipient is still reading his mail ... ;)
by martinayotte
Sat Jul 29, 2017 4:44 pm
Forum: Libary request
Topic: Siemens S65 Display Lib For STM32
Replies: 1
Views: 98

Re: Siemens S65 Display Lib For STM32

Those registers are for plain AVR SPI !
You will need to tweak the code to use STM32 SPI, not the one from AVR.
Did you have the proper board selected ?
by martinayotte
Thu Jul 27, 2017 7:36 pm
Forum: General discussion
Topic: Reading "User data storage option bytes"?
Replies: 15
Views: 271

Re: Reading "User data storage option bytes"?

I did figured out after few minutes of googling, then I found the registers address in STM PDF provide above.
by martinayotte
Thu Jul 27, 2017 2:36 pm
Forum: General discussion
Topic: Reading "User data storage option bytes"?
Replies: 15
Views: 271

Re: Reading "User data storage option bytes"?

Ok ! I think I've found it here at page 20 : http://www.st.com/content/ccc/resource/technical/document/programming_manual/10/98/e8/d4/2b/51/4b/f5/CD00283419.pdf/files/CD00283419.pdf/jcr:content/translations/en.CD00283419.pdf 0x1FFFF804 EDIT : BTW, the 0x1FFFF804 is for STM32F1xx, for the F4xx it see...
by martinayotte
Thu Jul 27, 2017 2:30 pm
Forum: General discussion
Topic: Reading "User data storage option bytes"?
Replies: 15
Views: 271

Re: Reading "User data storage option bytes"?

zmemw16 wrote:
Thu Jul 27, 2017 2:01 pm
basic search, so not too difficult
But this doesn't provide of any infos where those bytes are located in the chip, for example in STM32F103C8.
by martinayotte
Thu Jul 27, 2017 1:20 pm
Forum: General discussion
Topic: Reading "User data storage option bytes"?
Replies: 15
Views: 271

Re: Reading "User data storage option bytes"?

ramimo wrote:
Thu Jul 27, 2017 12:15 pm
the STMF1 has two special bytes, called "User data storage option bytes".
I don't see any such references in datasheets, where did you saw that other than Flash Loader Demonstrator ?
Perhaps it is simple bytes written somewhere at the end of uploaded firmware ...