Search found 1678 matches
- Wed May 01, 2024 3:40 pm
- Forum: USB bootloader
- Topic: Flash and Serial usb f103
- Replies: 7
- Views: 667
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: 667
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: 1915
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: 2012
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: 1276
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: 1915
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...
- Sat Apr 27, 2024 6:11 pm
- Forum: General discussion
- Topic: Stumbling at the first connection...
- Replies: 7
- Views: 1915
Re: Stumbling at the first connection...
if you want to program a stm32f103 e.g. those 'blue pill' style boards. get 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 for 'blue pill' style boards, i think they put the headers for that at the '...
- Sat Apr 27, 2024 1:02 pm
- Forum: Libraries & Hardware
- Topic: Adafruit Nexopixel Library not working...
- Replies: 8
- Views: 2012
Re: Adafruit Nexopixel Library not working...
for neopixels I've been thinking about using Timers and DMA https://www.thevfdcollective.com/blog/stm32-and-sk6812-rgbw-led https://ralimtek.com/posts/2021/ws2812/ think Adafruit's Neopixel lib uses SPI? well nothing 'wrong about it' but that using Timers possibly 'saves' an SPI port and is possibly...
- Sat Apr 27, 2024 7:43 am
- Forum: General discussion
- Topic: Stumbling at the first connection...
- Replies: 7
- Views: 1915
Re: Stumbling at the first connection...
usually this indicates a bad usb cable