MicroPython Forum (Archive)

Don't worry to use high UART baudrates on pyboard. Most of the time 115200 baud are used. We also successfully used baudrates of up to 921000.

On a pyboard there are 4Kbytes of NVRAM. It survives a power cycle as long as VBACK is active.

Note that STM32 SPI cannot provide all baudrates. In fact if a specific baudrate is requested, MPY selects the available baudrate <= requested baudrate. Also note that available baudrates vary with SYSCLK frequency. All of the above is only true for HW SPI, SW SPI might give finer granularity at low...

pythoncoder wrote: ↑

Sat Aug 25, 2018 4:23 am

chuckbook wrote: ↑

Fri Aug 24, 2018 11:10 am

...without warranty: 216M, 1.547, 1.721, 2.839, 4.116

Impressive figures.

But to quote from Basil Fawlty

where did you get that?

To quote from Dr. Franklyn

I would love to tell you, but then, of course...

pythoncoder wrote: ↑

Fri Aug 24, 2018 7:40 am

Interesting and informative information. It will be interesting to see how the forthcoming Pyboard D-series compares.

without warranty: 216M, 1.547, 1.721, 2.839, 4.116

Just use: instead of:

Thanks for sharing this information. I finally figured out why we chose MicroPython!
Take my respect!

Self calibration for F4 & F7 means evaluation of Vref by means of factory calibration parameters for temp sensor and internal band-gap reference. It has nothing to do with ADC calibration.

Be aware of the fact that so far only a limited number of MCUs (F405, F411, F7xx) are supported when it comes to internal voltage readout and self calibration.

CCM RAM is not accessible via DMA.
DocID018909 Rev 10, 2.1, pp 59