Search found 13 matches

by FGS
Wed Aug 09, 2023 3:54 pm
Forum: General discussion
Topic: Serial MIDI problem with note off
Replies: 0
Views: 5291

Serial MIDI problem with note off

Hello everyone, So i wrote a code handling polyphonic MIDI - nothing really complicated (it needs to be optimized for some peculiar cases like having error into the messages) void handleMidiInput() { if (Serial.available() > 0) { byte incoming_byte = Serial.read() ; switch (MIDI_reception_state) { /...
by FGS
Tue Apr 11, 2023 11:24 pm
Forum: General discussion
Topic: Generating triggers with a very precise timing
Replies: 9
Views: 1257

Re: Generating triggers with a very precise timing

Thanks everyone for your contribution - I will definitively try some of those solutions, also after some more enquiries i suspect the crystal to be indeed not at 8MHz. The error i measured is way less than 0,1%, another solution i m into is to calibrate the timing : sending a precise reference for s...
by FGS
Tue Apr 04, 2023 4:14 pm
Forum: General discussion
Topic: Generating triggers with a very precise timing
Replies: 9
Views: 1257

Re: Generating triggers with a very precise timing

This is the code i am using now In the setup : Timer2.pause() ; Timer2.setMode(TIMER_CH1, TIMER_OUTPUTCOMPARE); Timer2.setPeriod(100); // in microseconds - 10kHz Timer2.setCompare(TIMER_CH1, 1); // overflow might be small Timer2.attachInterrupt(TIMER_CH1, htimer_interrupt); Timer2.refresh() ; Timer2...
by FGS
Sat Apr 01, 2023 1:14 am
Forum: General discussion
Topic: Generating triggers with a very precise timing
Replies: 9
Views: 1257

Re: Generating triggers with a very precise timing

Thanks for the suggestion, besides using the PWM solution i m still scratching my head to understand what's going on - do we agree the timing should be really more accurate ? Also I have four signals to generate like this with different periods and variable timing (but still that needs to be quite a...
by FGS
Thu Mar 30, 2023 12:30 am
Forum: General discussion
Topic: Generating triggers with a very precise timing
Replies: 9
Views: 1257

Generating triggers with a very precise timing

Hello everyone, for a project i need to generate triggers at a precise period. It seems the triggers are drifiting from a reference (a few ms after several minutes which is not ok for my application). In order to have the more precise period possible, i worked with a timer interupt (at 10kHz / 10 us...
by FGS
Fri Nov 19, 2021 5:47 pm
Forum: General discussion
Topic: GD32f103 and I2C
Replies: 3
Views: 1938

Re: GD32f103 and I2C

Thanks for the answer - i was afraid i missed something not reading the forum for one entire year :)
by FGS
Fri Nov 19, 2021 12:53 am
Forum: General discussion
Topic: GD32f103 and I2C
Replies: 3
Views: 1938

GD32f103 and I2C

Hello everyone, i rencently bought some gd32f103cBt6 to replace the quite pricey stm32 :) I just drop the gd on a custom dev card i have - running with a 8MHz crystal. I had no problem uploading my sketch, working with the GPIO and the SPI but not with the I2C. I know it must be related to the timin...
by FGS
Thu Nov 12, 2020 5:16 pm
Forum: General discussion
Topic: Uploading hex files to stm32f103
Replies: 6
Views: 8820

Re: Uploading hex files to stm32f103

You can use STM32CubeProgrammer So dowmload it ready to upload but ... Which adress should i write the bin file to ? I m wondering if 0#08000000 is the address for the bootloader and if my bin file should start at a further adress. Thank you ! Edit : just checked with my arduino IDE - adress is 0#0...
by FGS
Thu Nov 12, 2020 5:11 pm
Forum: General discussion
Topic: Uploading hex files to stm32f103
Replies: 6
Views: 8820

Re: Uploading hex files to stm32f103

GonzoG wrote: Wed Nov 11, 2020 12:15 am You can use STM32CubeProgrammer
So dowmload it ready to upload but ... Which adress should i write the bin file to ? I m wondering if 0#08000000 is the adress for the bootloader and if my bin file should start at a further adress.

Thank you !
by FGS
Wed Nov 11, 2020 12:41 pm
Forum: General discussion
Topic: Uploading hex files to stm32f103
Replies: 6
Views: 8820

Re: Uploading hex files to stm32f103

Thanks everyone !!! That s really helpfull :D

Go to advanced search