Arduino for STM32

I think the 'survey' above is pretty accurate, and you can use the above as an 'average'. stm32f4 being marginally faster, actually quite a bit percentage wise. But that trying to do interrupts to achieve < 1 us, I think may be just 'wishful thinking'. And on stm32f1xx, I think it won't match the 1 ...

I've made an attempt to make an usb oscilloscope using stm32f103c8 ADC https://github.com/ag88/GirinoSTM32F103duino this is based on the 'old' libmaple (roger's) core https://github.com/rogerclarkmelbourne/Arduino_STM32 if ADC sampling is driven by a timer interrupt, it can at best achieve about 500...

for what is worth, I've got a stm32f103c8 'blue pill' whose VBAT (that is supposed to take microamps), drain a CR2032 in like a few weeks. then that after the 'tests' I use a different board with a stm32f103c8, this time round a single lithium coin cell CR2032 keeps RTC running for practically over ...

030RC ! quite a 'big' chip, for a small uP. a usual thing is check connected peripherals, e.g. led (1ma-20ma) - but that'd be too obvious less obvious stuff may be the LDO, and 'other' peripherals that perhaps sink currents even if it is 'doing nothing' then in extreme cases unclock various on chip ...

I *think* SD Fat requires more sram than do the 'low end' chips offer. I've tried an implementation running on stm32f103c8 20k sram, libmaple (roger's) core. It works well for a pretty long time, then as the number of files accumulate, the directory list become more verbose. Then one day I had a 'cr...

oh and for stm32f103 the rtc and 'bluepill' (or 'maple mini') type boards, I've used the RTC running on VBAT with the on board external crystal. I've got a defective chip for one, but that for a normal working stm32f103c8 chip, the RTC keeps time for a long time > 1 year on a single cr2032 lithium b...

stm32f103 can be programmed either by: - st-link (SWD) - uart boot mode (need to set boot0) what is strange on the original schematic is that boot0 is pulled up to 3v3 i.e. it is set. which means that the chip will always be in programming mode on reset. I think there'd be a jumper to pull that boot...

for DAPlink, you may need to explore things like openocd https://openocd.org/ I heard about it. It's a CLI-program right? Can ArduinoIDE call it instead of STM32CubeProgrammer CLI? WeActStudio tells me " You can use another ST link to brush the daplink into ST link ". I only find in inter...

for DAPlink, you may need to explore things like openocd https://openocd.org/ STM32Cubeprogrammer is generally made for st-link v2 ++. the main thing about STM32Cubeprogrammer is that it is from ST, and that if one are working in MS Windows, it saves one struggling with driver stacks issues. as othe...

'level shifting' is a nuisance as there are too many cases of needing to interface 3.3v to 5v and vice versa. while looking around for 'solutions' I found this little rather interesting logic gate 74lvc1g17 https://www.ti.com/lit/ds/symlink/sn74lvc1g17.pdf https://assets.nexperia.com/documents/data-...