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by stevestrong
Mon Apr 19, 2021 1:44 pm
Forum: General discussion
Topic: USB Host, what solution?
Replies: 19
Views: 214

Re: USB Host, what solution?

According to this link you do it in CubeMX: https://controllerstech.com/stm32-usb-host-hid/
by stevestrong
Mon Apr 19, 2021 9:09 am
Forum: General discussion
Topic: USB Host, what solution?
Replies: 19
Views: 214

Re: USB Host, what solution?

I would use a F4x1 pill and some apps already available on the net, like this:
https://damogranlabs.com/2018/02/stm32- ... -keyboard/
g**gle is your friend 8-)
by stevestrong
Fri Apr 16, 2021 1:28 pm
Forum: Let us know a bit about you and your projects
Topic: Greetings from Germany
Replies: 1
Views: 94

Re: Greetings from Germany

Wilkommen Volker,
please, if you haven't done that before, read this first:
viewtopic.php?f=2&t=301
by stevestrong
Fri Apr 16, 2021 1:25 pm
Forum: General discussion
Topic: constant ADC Average via DMA
Replies: 2
Views: 74

Re: constant ADC Average via DMA

DMA cannot do average, it just saves values in an array or one variable.
If you want average of some values that would inevitably involve CPU processing either in an ISR or on main level.
by stevestrong
Thu Apr 15, 2021 3:31 pm
Forum: IDE's
Topic: [SOLVED] Maple_Upload.bat : EXCEPTION_ACCESS_VIOLATION
Replies: 18
Views: 3741

Re: [SOLVED] Maple_Upload.bat : EXCEPTION_ACCESS_VIOLATION

I think the main issue is to find a universal tool which instantiate the USB DFU interface on all OS which allows the upload.
And Java is the one which can be used independent on the platform. Unless one develop different tools for each platform in part.
by stevestrong
Thu Apr 15, 2021 11:50 am
Forum: IDE's
Topic: [SOLVED] Maple_Upload.bat : EXCEPTION_ACCESS_VIOLATION
Replies: 18
Views: 3741

Re: [SOLVED] Maple_Upload.bat : EXCEPTION_ACCESS_VIOLATION

The main development target IDE is Arduino.
If Arduino IDE changes the behavior, then this will be also adapted, but other IDEs will not be taken into account.
You cannot support every kind of specific behavior for every IDE.
by stevestrong
Tue Apr 13, 2021 11:43 am
Forum: General discussion
Topic: How to measure the duty-cycle of an signal?
Replies: 2
Views: 73

Re: How to measure the duty-cycle of an signal?

Which resolution you want to achieve?
If not critical then you can make it without any specific timer, just user micros() for time measurement.
In this case, taking into account other system interrupts like systick and USB (if you use it) you better use median instead of mean of the values.
by stevestrong
Tue Apr 13, 2021 11:33 am
Forum: General discussion
Topic: Problems with the blue pill and a LCD 16x2
Replies: 6
Views: 176

Re: Problems with the blue pill and a LCD 16x2

And which core?
If you don't know, then post a picture of the selected board in Arduino IDE.
Please also post a link to the library.
by stevestrong
Mon Apr 12, 2021 8:08 am
Forum: General discussion
Topic: Problems with the blue pill and a LCD 16x2
Replies: 6
Views: 176

Re: Problems with the blue pill and a LCD 16x2

viewtopic.php?f=2&t=301

Which core and which LCD library do yo use?
by stevestrong
Sun Apr 11, 2021 9:13 am
Forum: General discussion
Topic: How to start? Connection issue with Bluepill
Replies: 10
Views: 165

Re: How to start? Connection issue with Bluepill

You have to install the serial driver from ST: https://www.st.com/en/development-tools/stsw-stm32102.html This will allow you to use the USB as serial port. To program the board you need either an STLink probe or you have to install a bootloader (for this you need anyway an STLink first...). Please ...

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