variant: add BlackPill F401CE support

Fixes #1143

Author: alextrical

Diff for: README.md

@@ -271,6 +271,7 @@ User can add a STM32 based board following this [wiki](https://github.com/stm32d
 | :----: | :-------: | ---- | :-----: | :---- |
 | :green_heart:  | STM32F405RG | [Adafruit Feather STM32F405 Express](https://www.adafruit.com/product/4382) | *1.8.0* |  |
 | :green_heart:  | STM32F401CC | [WeAct Black Pill](https://stm32-base.org/boards/STM32F401CCU6-WeAct-Black-Pill-V1.2) | *1.7.0* | [More info](https://github.com/WeActTC/MiniF4-STM32F4x1) |
+| :yellow_heart:  | STM32F401CE | [WeAct Black Pill](https://stm32-base.org/boards/STM32F401CEU6-WeAct-Black-Pill-V3.0) | **2.4.0** | [More info](https://github.com/WeActStudio/WeActStudio.MiniSTM32F4x1) |
 | :green_heart:  | STM32F411CE | [WeAct Black Pill](https://stm32-base.org/boards/STM32F411CEU6-WeAct-Black-Pill-V2.0) | *1.9.0* | [More info](https://github.com/WeActTC/MiniF4-STM32F4x1) |
 | :green_heart:  | STM32F407VE<br>STM32F407VG | [STM32 F4VE / Black F407VET6](https://stm32-base.org/boards/STM32F407VET6-STM32-F4VE-V2.0) | *1.4.0* | STM32F407VG support since *1.5.0* |
 | :green_heart:  | STM32F407ZE<br>STM32F407ZG | Black F407ZE / Black F407ZG | *1.5.0* |  |

Diff for: boards.txt

@@ -2967,9 +2967,19 @@ GenF4.menu.pnum.BLACKPILL_F401CC.upload.maximum_data_size=65536
 GenF4.menu.pnum.BLACKPILL_F401CC.build.board=BLACKPILL_F401CC
 GenF4.menu.pnum.BLACKPILL_F401CC.build.product_line=STM32F401xC
 GenF4.menu.pnum.BLACKPILL_F401CC.build.variant=STM32F4xx/F401CC(F-U-Y)_F401C(B-D-E)(U-Y)
-GenF4.menu.pnum.BLACKPILL_F401CC.build.variant_h=variant_{build.board}.h
+GenF4.menu.pnum.BLACKPILL_F401CC.build.variant_h=variant_BLACKPILL_F401Cx.h
 GenF4.menu.pnum.BLACKPILL_F401CC.build.peripheral_pins=-DCUSTOM_PERIPHERAL_PINS
 
+# BlackPill F401CE
+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=STM32F4xx/F401CC(F-U-Y)_F401C(B-D-E)(U-Y)
+GenF4.menu.pnum.BLACKPILL_F401CE.build.variant_h=variant_BLACKPILL_F401Cx.h
+GenF4.menu.pnum.BLACKPILL_F401CE.build.peripheral_pins=-DCUSTOM_PERIPHERAL_PINS
+
 # BlackPill F411CE
 # https://github.com/mcauser/WEACT_F411CEU6
 GenF4.menu.pnum.BLACKPILL_F411CE=BlackPill F411CE

Diff for: variants/STM32F4xx/F401CC(F-U-Y)_F401C(B-D-E)(U-Y)/PeripheralPins_BLACKPILL_F401CC.c renamed to variants/STM32F4xx/F401CC(F-U-Y)_F401C(B-D-E)(U-Y)/PeripheralPins_BLACKPILL_F401Cx.c

@@ -16,7 +16,7 @@
  * STM32F401CCFx.xml
  * CubeMX DB release 6.0.20
  */
-#if defined(ARDUINO_BLACKPILL_F401CC)
+#if defined(ARDUINO_BLACKPILL_F401CC) || defined(ARDUINO_BLACKPILL_F401CE)
 #include "Arduino.h"
 #include "PeripheralPins.h"
 
@@ -221,4 +221,4 @@ WEAK const PinMap PinMap_USB_OTG_FS[] = {
 
 //*** No SD ***
 
-#endif /* ARDUINO_BLACKPILL_F401CC */
+#endif /* (ARDUINO_BLACKPILL_F401CC) || (ARDUINO_BLACKPILL_F401CE) */

Diff for: variants/STM32F4xx/F401CC(F-U-Y)_F401C(B-D-E)(U-Y)/variant_BLACKPILL_F401CC.cpp renamed to variants/STM32F4xx/F401CC(F-U-Y)_F401C(B-D-E)(U-Y)/variant_BLACKPILL_F401Cx.cpp

@@ -10,7 +10,7 @@
  *
  *******************************************************************************
  */
-#if defined(ARDUINO_BLACKPILL_F401CC)
+#if defined(ARDUINO_BLACKPILL_F401CC) || defined(ARDUINO_BLACKPILL_F401CE)
 
 #include "pins_arduino.h"
 
@@ -118,4 +118,4 @@ WEAK void SystemClock_Config(void)
 }
 #endif
 
-#endif /* ARDUINO_BLACKPILL_F401CC */
+#endif /* (ARDUINO_BLACKPILL_F401CC) || (ARDUINO_BLACKPILL_F401CE) */