Search found 38 matches

by stevestrong
Mon Feb 24, 2020 1:20 pm
Forum: General discussion
Topic: PN532 problem
Replies: 8
Views: 100

Re: PN532 problem

The Wire lib has been recently reworked, so it may cause some problems.
To exclude that, you could eventually use the SoftWire lib instead of the Wire (hardware) version.
by stevestrong
Mon Feb 24, 2020 12:30 pm
Forum: General discussion
Topic: PN532 problem
Replies: 8
Views: 100

Re: PN532 problem

You should figure out in which function hangs or breaks the software.
I would not exclude the library, it may eventually have a memory overflow problem.

BTW, which core do you use?
by stevestrong
Mon Feb 24, 2020 8:27 am
Forum: General discussion
Topic: PN532 problem
Replies: 8
Views: 100

Re: PN532 problem

The STM32F1 series MCUs are working with 3.3V supply voltage.
So the I2C pull-ups should be connected to 3.3V instead of 5V.
by stevestrong
Tue Feb 18, 2020 8:33 am
Forum: STM32F4 based boards
Topic: Is there any ported RTOS for STM32F407VE?
Replies: 12
Views: 792

Re: Is there any ported RTOS for STM32F407VE?

You can write your own my_delay() function where you can do other stuff while waiting for radio lib response.

Or, even more elegant, you can write your own yield() function to do other stuff, as yield() is already included in delay().
by stevestrong
Sat Feb 15, 2020 11:24 am
Forum: STM32F4 based boards
Topic: Is there any ported RTOS for STM32F407VE?
Replies: 12
Views: 792

Re: Is there any ported RTOS for STM32F407VE?

xtream123 wrote:
Fri Feb 14, 2020 1:26 pm
Why you do not have a plan?is it hard to port an RTOS?
I don't know how hard is it to port.
But I will not do it because I don't need it.
Why do you need it?

For easily managing timings I lately used this simple tasker: https://github.com/joysfera/arduino-tasker
by stevestrong
Fri Feb 14, 2020 7:57 am
Forum: STM32F4 based boards
Topic: Is there any ported RTOS for STM32F407VE?
Replies: 12
Views: 792

Re: Is there any ported RTOS for STM32F407VE?

I am not aware of any RTOS port for my core.
And me, I do not plan to do it.
by stevestrong
Thu Feb 13, 2020 8:16 am
Forum: General discussion
Topic: xpt2046 touchscreen control with the ILI9341 TFT & Arduino
Replies: 2
Views: 325

Re: xpt2046 touchscreen control with the ILI9341 TFT & Arduino

I assume you are using the libmaple (Roger's) core. Haven't you got some warnings during compilation/build? What do you see on the TFT display? I do not see any code section which would differentiate the SPI port used by XP chip from that of TFT. Did you hardcode it in the XP library? If not, you sh...
by stevestrong
Mon Feb 10, 2020 2:57 pm
Forum: General discussion
Topic: Quick summary?
Replies: 9
Views: 533

Re: Quick summary?

I continuously try to do some improvements on my libmaple core related to F1, F3 and F4 families. For example, I removed the pin map table for F3/F4 cores. I intend to do the same for F1, and in addition to simplify the files structure (already in progress). OTOH, I can only support F1, F3 and F4 fa...

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