Arduino for STM32

GonzoG

DON'T use any fast IO libraries with stm32duino.
1. this library for AVR based boards. With STM32 core it uses standard digitalWrite();
2. digitalWriteFast() and digitalReadFast() are a builtin functions in STM32 core.

Code: Select all

digitalWriteFast(digitalPinToPinName(PA1),1);
//or
digitalWriteFast(PA_1,1);

GonzoG

There's "big" user error and your program crashes.

Code: Select all

...
Theta[200]....

for(int n=2;n<200;n++)
{
...
Theta[n+1]=...
}

GonzoG

Hi, how can I set two (or more) different pwm-frequencys for two pwm-pins on STM32G071? I prefer analogWriteFrequency(herz), but I assume is only for all pwms - correct? analogWriteFrequency() is the easiest way. But it does not change frequency until analogWrite() i called and frequency changes on...

GonzoG

F103 does not have hardware usb upload method. You need to flash usb bootloader first (using ST-Link or serial adapter).
Also it won't show bluepill's COM port until there's a sketch with USB CDC enabled flashed to it.

GonzoG

You don't need any additional libraries. Use hardware timer: https://github.com/stm32duino/Arduino_Core_STM32/wiki/HardwareTimer-library There's "Timebase_callback" example in stm32duino examples that does what you need. And if you want fast, set optimization to -O3 and use digitalWriteFas...

GonzoG

You need a programmer to flash bootloader to F103 (ST-Link or usb-ttl). There is no other way. There are instructions how to flash HID bootloader.

hid_flash tool is for flashing your programs using HID bootloader.

GonzoG

You don't have HID bootloader on your board.
stm32duino bootloader is based on Maple bootloader and you need to select "Maple bootloader 2.0" or flash HID bootloader: https://github.com/Serasidis/STM32_HID_Bootloader

GonzoG

Have you checked if board setup in stm32duino (clocks, etc) is same are your hardware ?? Proteus only has External Clock Frequency for STM which is set to 8Mhz by default Idk about board setup, please let me know what files have configs So it's not an issue with stm32duino, but with Proteus.

GonzoG

Have you checked if board setup in stm32duino (clocks, etc) is same are your hardware ??

GonzoG

" Error - [1209:BEBA] device is not found"
Means that your board does not have HID bootloader or it couldn't be booted into bootloader.

Port has to disconnect, as the board needs to reset to enter bootloader.

Arduino for STM32

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