Arduino for STM32

The SAMD core use this version: compiler.path={runtime.tools.arm-none-eabi-gcc-7-2017q4.path}/bin/ See: https://github.com/arduino/ArduinoCore-samd/blob/master/platform.txt#L34 The one using the xpack-arm-none-eabi-gcc-9.2.1-1.1 is from the STM32 core version 1.8.0 : compiler.path={runtime.tools.xpa...

Welcome back arpruss,
Nice presentation and project

OK, I think I found the issue. The variant you used is for this board: https://stm32-base.org/boards/STM32F103RET6-Generic-Board Firstly, do you have an HSE ? The SystemClock_Config(void) use the HSE as clock source. I guess you have one as it works. Now, I saw the ADC clock is not configured while ...

Ok sorry though you use a RE. So for the RB, use the Generic F103RBT6 (Blue Button) then PA3 will work. It is not the same ADCx instance between RB and RE. But the RB has no DAC. I don't know what you exactly done with PIO. First use the Arduino IDE with the core installed properly then use the corr...

FYI,
is not required.

For PIO usage, I could not help as I do not use it.

For PA3 analogRead, I have no clue as it should works like for other. Maybe an issue on your hardware?

Nice to see you all again and welcome
sorry again for this long wait

LTO is mainly for size. The LTO option is available but I do not advise to use it, as I've met several time issue which are mainly linked to gcc toolchain. :roll: You can optimize your code using several way: direct access register, LL GPIO,... Try this: void setup() { pinMode(PB8, OUTPUT); } void l...

2. I receive freezing of the chip trying to do analogRead from PA3. The rest of analog reads from other pins work perfectly. Seems strange if other works. 3. I still receive the same behaviour of analogWrite for PA4 & PA5 in the strict behaviour of analogRead code (https://github.com/stm32duino...

Hi, For analogWrite on PA4 and PA5, this is the normal behaviour as there is no timer linked to those pins: https://github.com/stm32duino/Arduino_Tools/blob/31f3d43d620878dccbf658f65095f66fec9809b2/src/genpinmap/Arduino/STM32F103R(8-B)Tx/PeripheralPins.c#L88-L136 So it operates like a digital pin: 0...

Pito wrote: ↑Tue Dec 24, 2019 2:48 pm Does the new STM's core support FPU?

Yes