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.
Fix configs to make the `handwired/onekey/blackpill_f401:backlight` and
`handwired/onekey/blackpill_f411:backlight` examples actually compile
and work:
- Use `PWMD5` instead of `PWMD2` for backlight, which matches the
default value of `BACKLIGHT_PAL_MODE` (AF02 for pin A0 is `TIM5_CH1`)
and does not conflict with the default value of `STM32_ST_USE_TIMER`.
- Enable `HAL_USE_PWM` in halconf.h and `STM32_PWM_USE_TIM5` in
mcuconf.h, so that `PWMD5` could be used.
* Initial work for consolidation of board files and default ChibiOS configs.
* Migrate F401/F411 black pills for testing.
* Add early init bootloader jump flag.
* Add support for I2C in order to use i2c_scanner keymap.
* Add F401/F411 HSE bypass to get things booting.
* Exempt "hooked" ChibiOS conf files from updater script.
* Fix up ordering for bootloader_defs file check.
* Match previous $(KEYBOARD_PATHS) value for Proton-C, updated for all board configs.
* Set backlight and RGB pins for AVR onekeys
* Set pin for ADC as well
* Define ADC_PIN for F4 blackpills
* Use A0 for F4 ADCs
* Set ADC pins for F0 and F1
