Search found 1682 matches
- Tue May 14, 2024 6:12 am
- Forum: General discussion
- Topic: STM32F103CB ‘Sleepy mode’ and ‘Wake up’ function
- Replies: 2
- Views: 306
Re: STM32F103CB ‘Sleepy mode’ and ‘Wake up’ function
library is here https://github.com/stm32duino/STM32LowPower you need to use stm core for that low power is not for novices, to do low power, the simplest way is to consult the reference manual and figure out how to do that from there. in some low power modes, you need to trigger a reset after wake u...
- Tue May 07, 2024 1:11 am
- Forum: General discussion
- Topic: Using DMA to vary PWM duty cycle
- Replies: 7
- Views: 2511
Re: Using DMA to vary PWM duty cycle
Code: Select all
timer_dma_enable_req(dev1, cc_channel1);
- Sat May 04, 2024 3:15 pm
- Forum: General discussion
- Topic: Synthesizer DSP STM32 resources
- Replies: 7
- Views: 4114
Re: Synthesizer DSP STM32 resources
for synthesizer codes I'd guess it'd take quite a lot of c/c++ codes etc to synthesize https://www.google.com/search?q=software+synthesizer+c%2B%2B if you're keen on midi there are things like gus patches the soundfonts files can easily be like > 100 megs https://www.google.com/search?q=midi+syn+gus...
- Sat May 04, 2024 2:09 pm
- Forum: General discussion
- Topic: Synthesizer DSP STM32 resources
- Replies: 7
- Views: 4114
Re: Synthesizer DSP STM32 resources
Unfortunately, F411 do not have DACs. https://www.st.com/en/microcontrollers-microprocessors/stm32f411ce.html Hence, for this chip PWM is about the only way to do some DAC. stm32g431, stm32f407, stm32f405 etc has DAC, check the specs https://www.st.com/en/microcontrollers-microprocessors/stm32g4x1.h...
- Wed May 01, 2024 3:40 pm
- Forum: USB bootloader
- Topic: Flash and Serial usb f103
- Replies: 7
- Views: 1857
Re: Flash and Serial usb f103
if you are using stm32f103c8 blue pill you need to choose generic_boot20_pc13.bin https://github.com/rogerclarkmelbourne/STM32duino-bootloader/blob/master/binaries/generic_boot20_pc13.bin and flash that using st-link (or uart) if you are in windows use stm32cube programmer to flash that boot loader ...
- Tue Apr 30, 2024 3:34 pm
- Forum: USB bootloader
- Topic: Flash and Serial usb f103
- Replies: 7
- Views: 1857
Re: Flash and Serial usb f103
for stm32f103 you need either a st-link v2 https://www.adafruit.com/product/2548 https://www.st.com/en/development-tools/st-link-v2.html https://octopart.com/search?q=st-link+v2 or a usb-uart (3.3v) dongle for a usb-uart you need to set boot0 to program it alternatively, get a stm32f401/f411 (e.g. 4...
- Mon Apr 29, 2024 7:31 am
- Forum: General discussion
- Topic: Stumbling at the first connection...
- Replies: 7
- Views: 3273
Re: Stumbling at the first connection...
for this maple DFU boot loader, after you press reset, it should blink fast for like 6 times, you need to click upload or run dfu-util within about 4-5 seconds when it blinks there is a 'perpetual' mode, and I think the setting is 'boot1' jumper this is from the good old days http://static.leaflabs....
- Mon Apr 29, 2024 5:21 am
- Forum: Libraries & Hardware
- Topic: Adafruit Nexopixel Library not working...
- Replies: 8
- Views: 3636
Re: Adafruit Nexopixel Library not working...
I think there is one more trouble, I think neopixels are driven at 5 V https://cdn-shop.adafruit.com/datasheets/WS2812B.pdf it may take a 74LVC1G17 to interface it https://www.nexperia.com/products/analog-logic-ics/logic/buffers-inverters-transceivers/schmitt-trigger-ics/series/74LVC1G17.html https:...
- Mon Apr 29, 2024 4:42 am
- Forum: General discussion
- Topic: STM32 Pinout Polarity
- Replies: 5
- Views: 2544
Re: STM32 Pinout Polarity
one should read datasheets e.g. https://www.st.com/resource/en/datasheet/stm32f103c8.pdf 5.2 Absolute maximum ratings Output current sunk by any I/O and control pin 25 mA Output current source by any I/Os and control pin − 25 mA in fact it should be much less than this like 5 mA max, at 20 mA you ri...
- Sun Apr 28, 2024 2:20 pm
- Forum: General discussion
- Topic: Stumbling at the first connection...
- Replies: 7
- Views: 3273
Re: Stumbling at the first connection...
custom bootloaders are 3rd party developed back in the 'old days' there is leaflabs maple, that is the first popular *duino running on stm32f103, the old forum which hosted this made improvements originally hosted by 'roger' https://github.com/rogerclarkmelbourne/Arduino_STM32 https://github.com/rog...