Arduino for STM32

Here's what the diagnostics I ran do: A silicon bug in genuine STM32F1xx chips is exploited, namely the BGMCU_IDCODE cannot be read from within the MCU without a SWD or JTAG interface connected. Verify the Flash Size Register = 64KB Verify that the MCU has a hidden second 64KB flash block. Most STM3...

I bet it's a bit smaller if you use the libmaple core, too.

I wouldn't give up on the blue pills. They're cheap and they work well. Yes, there are lots of clones, but I've generally found those to work well enough for most of my purposes, and it seems that now genuine chips are available. See my recent post where I link to a store where I got six apparently ...

I just ran the diagnostics on the other five units in the order. All passed.

I ordered half a dozen of the "original chip" blue pills from https://www.aliexpress.us/item/2251832533365278.html . I just unwrapped one. I was kind of expecting fakes, but I did some tests. 1. The STM demonstrator reports 64kb flash, but in fact there is 128kb, just as on a real chip. So...

Some AliExpress sellers are now advertising "original chip" blue pills. Has anyone tried them? Are they still just clones?

I found an odd thing: for my clone, things worked a lot better if I did: before setting the prescaler, rather than after.

I've updated my USB Composite library to 1.0.7: https://github.com/arpruss/USBComposite_stm32f1
The main new thing is you can call USBHID.setTXInterval(t) for making devices that can be polled faster.

I wanted my own legal copy of Duck Hunt so I bought an ebay cartridge. I desoldered the mask ROMs with a heat gun and dumped easily with a black pill (also works with a blue pill) which has enough pins for the job. One just needs to make sure that the mask ROM is powered with 5V and that the STM32's...

Background: https://stackoverflow.com/questions/393 ... d-keyboard

I guess you'll need to generate a map for the locale. I don't think there is a general solution on the stm side.