View source for STM32 Black Pill

== Black Pill Board Features ==

'''Not pin compatible with Blue Pill due to power pin locations'''

* Use on [[BLACK-PILL-HUB]]
** Can't be used on [[BLUE-PILL-HUB]] card without modifications
* [[STM32F4XX|STM32F401CCU6 or STM32F411CCU6 CPU]]
** [https://stm32-base.org/boards/STM32F401CEU6-WeAct-Black-Pill-V3.0 STM32F401CCU6]
*** 84 MHz CPU clock
*** 256 KB Flash
*** 64 KB SRAM
** [https://stm32-base.org/boards/STM32F411CEU6-WeAct-Black-Pill-V2.0 STM32F411CCU6]
*** 100 MHz CPU clock
*** 512 KB Flash
*** 128 KB SRAM
** 3.3V regulator
** 2x12-bit, A/D converter
** 7-channel DMA controller
** SPI, I2C, UART interfaces
** 7 timers
* SPI ROM footprint
** Fits an [https://www.mouser.com/ProductDetail/Winbond/W25Q32JVSSIQ/?qs=qSfuJ%252Bfl/d4PGZSN0WxfCA== W25Q32JVSSIQ]
** 32 Mbit SPI Flash ROM,
* USB-C
* Reset button
* Power LED
* PC 13 LED
* SWD connector
* '''Warning: The +5V pins on this board are directly connected to the +5V pin of the USB connector. There is no protection in place. Do not power this board through USB and an external power supply at the same time.'''

[[File:BlackPillBoard-720px.png]]

* [https://stm32-base.org/boards/STM32F401CCU6-WeAct-Black-Pill-V1.2.html WeAct Black Pill V1.2] - Helpful page

== Black Pill Reserved Pins ==

* PA0 - On-board USER KEY - needs INPUT_PULLUP
* PC13 - On-board LED
* PB2 - BOOT1
** Pulling this pin down by external hardware causes the board to boot to serial
** Can be ignored by unplugging USB (power) while holding both reset and BOOT1 buttons on the Black Pill card
** Release reset button first
* PA11 - USB-M
* PA12 - USB-P
* PA9 - Serial TX1
* PA10 - Serial RX1

== Black Pill Card Schematic ==

[https://github.com/land-boards/lb-boards/blob/master/Arduino%20Cards/Black-Pill-Hub/Documents/BlackPillBoard/MiniF4x1Cx_V30%20SchDoc.pdf Schematic]

== Black Pill Mechanicals ==

[[File:original-dimensions-STM32F401CCU6_WeAct_Black_Pill_V1.2.png]]

== Black Pill Programming ==

=== DFU Programming ===

* Steps from [https://www.sgbotic.com/index.php?dispatch=pages.view&page_id=49 Programming|Program STM32 Black Pill (STM32F401 / F411) with Arduino IDE (Windows OS)]
** Add the URL to Additional Board Manager URLs text box: 
*** https://github.com/stm32duino/BoardManagerFiles/raw/master/STM32/package_stm_index.json
** Go to Tools > Board > Boards Manager
** Search for STM32, select latest version and click Install.
** Download and install STM32CubeProg from ST.com: [https://www.st.com/en/development-tools/stm32cubeprog.html]
** Start the STM32CubeProg
** From the Tools > Board > STM32 Board, select Generic STM32F4 series
** Select Tools > Board Part Number > BlackPill F411CE
** Under USB Support, select CDC (generic "Serial" supersede U(S)ART)
** Under Upload method, select SMT32CubeProgrammer(DFU)
** Use the onboard BOOT0 and NRST button to put the board into bootloader mode:
*** press and hold the BOOT0 button
*** press and release NRST (reset) button to power cycle the processor
*** release BOOT0 button
** Upload sketch

[[File:Arduino-Programming-Tools-Dropdown.png]]

=== Other Programming ===

* ST-LINK V2
* [https://www.st.com/en/development-tools/flasher-stm32.html FLASHER-STM32] - STM32 Flash loader demonstrator (UM0462)
* From [https://www.st.com/content/ccc/resource/technical/document/application_note/51/5f/03/1e/bd/9b/45/be/CD00264342.pdf/files/CD00264342.pdf/jcr:content/translations/en.CD00264342.pdf AN3155]
[[File:SerialPropogramming (AN3155).PNG]]