0dee334bce
By default the `i2c_master` driver for ChibiOS uses the B6 pin for `I2C1_SCL` and the B7 pin for `I2C1_SDA`. However, the ChibiOS board file used for the F401 Blackpill board (`ST_STM32F401C_DISCOVERY`) configures B6 as `I2C1_SCL` and B9 as `I2C1_SDA`, and if that configuration is left unchanged, enabling the `i2c_master` driver results in having two pins (B7 and B9) configured as `I2C1_SDA` at the same time, which does not work properly (experimental results show that the B9 pin still works as `I2C1_SDA` in that case, and the B7 pin does not work). Configure the B9 pin as an input with pull-up in `board_init()`, so that the B7 pin can be configured as `I2C1_SDA` by the I2C driver. |
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| .. | ||
| blackpill_f401.c | ||
| config.h | ||
| halconf.h | ||
| mcuconf.h | ||
| readme.md | ||
| rules.mk | ||
readme.md
f401 blackpill onekey
Supported Hardware: STM32F401CCU6 WeAct v1.3.
To trigger keypress, short together pins B0 and A7.