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by stevestrong
Fri Jan 19, 2018 7:26 pm
Forum: New users MUST post here first, and let us know a bit about you and your projects
Topic: [SOLVED] Volatile Qualifier
Replies: 33
Views: 331

Re: [SOLVED] Volatile Qualifier

Anyone interested in this issue: please submit a (clean) PR.
(I won't do it, my github activity history shows that I am not capable to submit clean PRs :? )
by stevestrong
Fri Jan 19, 2018 1:30 pm
Forum: Projects
Topic: OV7670, Generic STM32F103RC and ILI9341 display
Replies: 347
Views: 17047

Re: OV7670, Generic STM32F103RC and ILI9341 display

In general, single writes are always slower than buffered writes. Using Serial.write(buffer, nr_bytes); should be more speed efficient. However, the throughput also depends on the speed with which you grab the bytes to be transmitted. Without seeing your code is hard to suggest more optimization. Wh...
by stevestrong
Fri Jan 19, 2018 1:24 pm
Forum: New users MUST post here first, and let us know a bit about you and your projects
Topic: [SOLVED] Volatile Qualifier
Replies: 33
Views: 331

Re: [SOLVED] Volatile Qualifier

@shujaat, you are welcome to submit a pull request on Github which solves this issue.
I am offering as volunteer for a review.
And I think Roger would be more than happy to have that PR.
by stevestrong
Fri Jan 19, 2018 10:05 am
Forum: General discussion
Topic: [SOLVED] Enable interrupts from inside a timer interrupt
Replies: 24
Views: 367

Re: [SOLVED] Enable interrupts from inside a timer interrupt

I would gladly tell you how to set the PWM but I have no idea about your requirements, about the relationship between PWM frequency, refresh rate, display resolution, and about all the required signals (and the synchronization among them) in general.
by stevestrong
Fri Jan 19, 2018 9:58 am
Forum: New users MUST post here first, and let us know a bit about you and your projects
Topic: [SOLVED] Volatile Qualifier
Replies: 33
Views: 331

Re: [SOLVED] Volatile Qualifier

Just as a small note, making these replacements will not make the core better , nor cleaner or powerful. Again: this issue is not a "core" issue , but an unfortunate coincidence between core, gcc and library. We could blame gcc for using this term. Me, I would not come to the idea to use such a term...
by stevestrong
Thu Jan 18, 2018 10:06 pm
Forum: New users MUST post here first, and let us know a bit about you and your projects
Topic: Dear all
Replies: 2
Views: 52

Re: Dear all

Willkommen.

Please read this first: viewtopic.php?f=2&t=3111.
Then post your question, if any, in an appropriate topic group.
by stevestrong
Thu Jan 18, 2018 8:09 pm
Forum: Working / ported libraries
Topic: Readonly Serial Multiple Ports
Replies: 3
Views: 64

Re: Readonly Serial Multiple Ports

Or, if you need more processing power, for ~ same price a STM32F407VET (black or mini) board would also make it (4 USART + 2UART).
by stevestrong
Thu Jan 18, 2018 7:24 pm
Forum: New users MUST post here first, and let us know a bit about you and your projects
Topic: [SOLVED] Volatile Qualifier
Replies: 33
Views: 331

Re: Volatile Qualifier

Well, guys, I've found the issue. Very simple. Two files from the gcc pakage uses " __io " as input parameter for some functions. This is just an unfortunate coincidence that the Arduino_STM32 core uses the same term to define volatile... The Teensy core is not sensitive to this because it uses the ...
by stevestrong
Thu Jan 18, 2018 6:02 pm
Forum: IDE's
Topic: STM acquires Atollic
Replies: 21
Views: 747

Re: STM acquires Atollic

Just installed V9.0.0 and got an Atollic-titled Eclipse :)
by stevestrong
Thu Jan 18, 2018 5:20 pm
Forum: New users MUST post here first, and let us know a bit about you and your projects
Topic: [SOLVED] Volatile Qualifier
Replies: 33
Views: 331

Re: Volatile Qualifier

There are tens of libraries which works fine with the Arduino_STM32, so I don't think there is a problem with the core, at least not alone. Just because you see a core file most frequently listed in the error message list, does not unambiguously mean that it is erroneous. And, as you could test and ...