Search found 1699 matches
- Tue May 28, 2024 3:00 pm
- Forum: General discussion
- Topic: STM32F030RCT high power consumption in sleep modes?
- Replies: 6
- Views: 438
Re: STM32F030RCT high power consumption in sleep modes?
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 ...
- Tue May 28, 2024 12:34 pm
- Forum: General discussion
- Topic: STM32F030RCT high power consumption in sleep modes?
- Replies: 6
- Views: 438
Re: STM32F030RCT high power consumption in sleep modes?
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 ...
- Sun May 26, 2024 8:43 am
- Forum: General discussion
- Topic: STM32C011 (WeAct) - first steps
- Replies: 23
- Views: 3171
Re: STM32C011 (WeAct) - first steps
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...
- Sun May 26, 2024 5:09 am
- Forum: General discussion
- Topic: STM32C011 (WeAct) - first steps
- Replies: 23
- Views: 3171
Re: STM32C011 (WeAct) - first steps
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...
- Sat May 25, 2024 6:21 pm
- Forum: STM32F1 based boards
- Topic: Help with STM32F103
- Replies: 4
- Views: 6299
Re: Help with STM32F103
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...
- Sat May 25, 2024 5:11 pm
- Forum: General discussion
- Topic: STM32C011 (WeAct) - first steps
- Replies: 23
- Views: 3171
Re: STM32C011 (WeAct) - first steps
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...
- Sat May 25, 2024 3:07 pm
- Forum: General discussion
- Topic: STM32C011 (WeAct) - first steps
- Replies: 23
- Views: 3171
Re: STM32C011 (WeAct) - first steps
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...
- Thu May 23, 2024 9:24 am
- Forum: Off topic
- Topic: 3.3v - 5v level shifter - 74lvc1g17
- Replies: 0
- Views: 143
3.3v - 5v level shifter - 74lvc1g17
'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-...
- Tue May 21, 2024 2:00 pm
- Forum: General discussion
- Topic: 'STM32WB55CE' What should I use to hold the boot?
- Replies: 2
- Views: 725
Re: 'STM32WB55CE' What should I use to hold the boot?
STM32WB55CE supports USB DFU bootloader, review the relevant specs and docs
https://www.st.com/en/microcontrollers- ... b55ce.html
it doesn't need a separate bootloader.
Alternatively, get a st-link v2 and newer and program away
https://www.st.com/en/microcontrollers- ... b55ce.html
it doesn't need a separate bootloader.
Alternatively, get a st-link v2 and newer and program away
- Sun May 19, 2024 8:59 pm
- Forum: Libraries & Hardware
- Topic: Bug in SPI-library or in example sketch?
- Replies: 8
- Views: 822
Re: Bug in SPI-library or in example sketch?
all the pins are normally GPIO, the alternate functions column are the alternate functions available at those particular pins, so for the gpio pin mux, you actually need to configure the pin mux so that it select the correct alternate function at the pin. If you do not know how to do that, this is d...