Differences

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--- stm32f1xx [2020/02/12 01:18] – [blue pill] add black pill kingkevin
+++ stm32f1xx [2024/01/07 17:49] (current) – external edit 127.0.0.1
@@ Line 119: / Line 119: @@
 Mine for example has a 10 kΩ pull-up (to 3.3 V) resistor on USB D+/PA12 instead if a 4.7kΩ (to 5 V), although USB devices use a 1.5 kΩ resistor to pull up (to 3.3 V) usually.
-===== blue pill =====
+===== black pill =====
+{{ :stm32f1xx:black-pill_bottom-mini.jpg?0x400|}}
+{{ :stm32f1xx:black-pill_top-mini.jpg?0x400|}}
 the [[https://stm32-base.org/boards/STM32F103C8T6-Black-Pill.html|black pill]] is a "fixed" version of the blue pill, but I find it quite inferior.
@@ Line 130: / Line 133: @@
 changes:
   * LED is on PB12 (sink to enable it)
+  * different pinout
 drawbacks:
   * larger
@@ Line 137: / Line 141: @@
   * no VBAT pin
   * one less GND pin
-  * no C15 and C14 pin
+  * no C15 and C14 pin (used for OSC32)
-  * different pinout
 ===== core board =====
@@ Line 385: / Line 388: @@
 ==== USB DFU ====
-There are several USB DFU bootloaders available (one from [[http://www.st.com/resource/en/application_note/cd00264379.pdf|STMicroelectronics]] themselves, or the open source [[https://github.com/rogerclarkmelbourne/STM32duino-bootloader|STM32duino-bootloader]]), but I developed [[https://git.cuvoodoo.info/stm32f1/about/|my own]] because I wanted to know how DFU works.
+There are several USB DFU bootloaders available (one from [[http://www.st.com/resource/en/application_note/cd00264379.pdf|STMicroelectronics]] themselves, or the open source [[https://github.com/rogerclarkmelbourne/STM32duino-bootloader|STM32duino-bootloader]]), but I developed [[https://git.cuvoodoo.info/kingkevin/stm32f1/|my own]] because I wanted to know how DFU works.
 Here I will explain how to use USB DFU with the [[https://github.com/rogerclarkmelbourne/STM32duino-bootloader|STM32duino-bootloader]] because it provides binaries for numerous development boards (while mine supports only a few, needs to be configured, and must compiled), but for other DFU bootloaders just replace with the corresponding USB ID.