[New Variant] Please add BlackPill F401CE

[pawelsky]

Board description (please complete the following information):

• Name: BlackPill F401CE
• Link to all relevant information: https://github.com/WeActTC/MiniF4-STM32F4x1

If is pretty much the same as existing BlackPill F401CC, but has bigger RAM (96kb) and flash (512kB). Clock is the same.

Here is a board definition

# BlackPill F401CE
# https://github.com/WeActTC/MiniF4-STM32F4x1
GenF4.menu.pnum.BLACKPILL_F401CE=BlackPill F401CE
GenF4.menu.pnum.BLACKPILL_F401CE.upload.maximum_size=524288
GenF4.menu.pnum.BLACKPILL_F401CE.upload.maximum_data_size=98304
GenF4.menu.pnum.BLACKPILL_F401CE.build.board=BLACKPILL_F401CE
GenF4.menu.pnum.BLACKPILL_F401CE.build.product_line=STM32F401xE
GenF4.menu.pnum.BLACKPILL_F401CE.build.variant=Generic_F401Cx

I believe changes in GenericF401Cx/PeripherialPins.c and GenericF401Cx/variant.h will be needed in the couple of ifdefs where ARDUINO_BLACKPILL_F401CC is mentioned.

Arduino_Core_STM32/variants/Generic_F401Cx/PeripheralPins.c

Line 219 in 59dda5c

#ifndef ARDUINO_BLACKPILL_F401CC

Arduino_Core_STM32/variants/Generic_F401Cx/variant.h

Line 74 in 59dda5c

#ifdef ARDUINO_BLACKPILL_F401CC

Arduino_Core_STM32/variants/Generic_F401Cx/variant.h

Line 112 in 59dda5c

#ifdef ARDUINO_BLACKPILL_F401CC

[fpistm]

Added to [New Variant] request list #722