Arduino for STM32

I am intrigued by stories of fake "small" chips.

An Ebay seller might shift a hundred "1-off" or "5-off" packages. Most buyers don't complain. The few that do will destroy any profit.

An AliExpress seller that shifts several "1000-off" or "10000-off" packages will not get very far. The buyers WILL ...

Oops. I had misread the Original Poster as having used U8g2lib and not U8glib. U8glib is deprecated nowadays.

Anyway, I ran the U8g2 examples with this constructor on a Nucleo-64:
U8G2_ST7920_128X64_1_SW_SPI u8g2(U8G2_R0, A2, A1, A0, A5); //setup: PSB=0 (RST, PSB has weak pullup)

then with this ...

It should work just fine. Start with the SW constructor.
Copy-paste your constructor to your message. Post a photo of the actual wires connecting the BluePill to the ST7920 module.

You can try the HW constructor later. But there is little point in attempting to share multiple devices on the same ...

No problem. I was just expecting that there would be many F411 users and that HID 2.2 was mature, proven and functional for F411 (and F401). i.e. members had built and used HID for months and years.

David.

That hid_bootloader.bin does not do anything.

It does not matter if you don't have a F411. You can build for both F401 and F411.
But I presume that you should build from https://github.com/Serasidis/STM32_HID_Bootloader and not from WeActTC

As far as I can see WeAct don't support HID 2.2 and ...

And has no one done this yet ?

Surely if the STM32 IDE has "HID 2.2" as an official option for F4 targets, someone, somewhere has built the .BIN file.

In much the same way that there is a hid_generic_pc13.bin available for installing on a BluePill.
And lots of public videos, advice ... on how to ...

That is my point. Has anyone got the HID 2.2 Bootloader to work for BlackPills ?

In which case please post a link to a working .BIN file that can be installed via ST-Link, USART, USB, ...

David.

A swift look at 3.2x2.5 SMD XTALs on Farnell showed that there are lots of 12MHz, 16MHz available and in stock.
Yes, 8MHz are few. And more expensive.

Obviously Chinese component market is different to the UK. But I don't see any price advantage of 25MHz.

Perhaps there are some other factors.

I ...

I wrote a 1 second PWM in CubeMXIDE that uses the 16MHz HSI. Then measured the period with a Logic Analyser.

Nucleo-F411 0.9874 sec
BlackPill-F411 #1 1.032 sec
BlackPill-F411 #2 1.012 sec

So the HSI is accurate +- 1.2% for the Nucleo and WeAct V3.0 (#2) but more than +-3% for my problem BlackPill ...

Sorry, I am busy with other things at the moment.

Simple questions:
1. Does everyone just use SWD for the BlackPill ?
2. Does anyone use the WeAct HID Bootloader?
3. Does WeAct work with HID 2.2 ?
4. Does anyone upload without unplugging or button press?

I tend to use Nucleo boards. i.e. permanent ...