Custom STM32F103C8T6

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Re: Custom STM32F103C8T6

Post by randybb » Mon Sep 26, 2016 9:47 pm

On Nucleo is STM32F103CB.

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Re: Custom STM32F103C8T6

Post by RogerClark » Mon Sep 26, 2016 10:54 pm

I suspect the STLink V2.1 would fit in a C8, especially as most C8's are really CB's ;-)

But I think the point is that the STLink (even V2) is not intended as a bootloader its a debugger, and would severely limit the amount of available code space left for applications.

The BMP is pretty much the same as the STLink, except without mass storage, and the BMP is quite large as well (i.e it would not be useful as a bootloader)

I think a mass storage bootloader would be great to have, but as using the HAL etc or any other lib e.g. libopencm3 would be impractical due to size, I doubt its practical

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Re: Custom STM32F103C8T6

Post by octavio » Wed Aug 30, 2017 7:19 pm

Is the external 8Mhz and 32khz crystals required or it could work (arduino bootloader and libs) just with the internal rc?
usb is not used.

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Re: Custom STM32F103C8T6

Post by Pito » Wed Aug 30, 2017 8:54 pm

usb is not used
It could work when the RC oscillator's frequency is known with at least 1-2% precision - because of Serial UART and of course millis() and friends.
STM32duino bootloader is usb based, but you may use ST-LINK/J-LINK, or serial upload.
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