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2021-09-12Align ChibiOS I2C defs with other drivers (#14399)Joel Challis
* Align ChibiOS I2C defs with other drivers * Update keyboards/xelus/valor_frl_tkl/config.h Co-authored-by: Ryan <fauxpark@gmail.com> Co-authored-by: Ryan <fauxpark@gmail.com>
2020-11-12handwired/onekey/blackpill_f401: Fix I2C pin config mismatch (#10322)Sergey Vlasov
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.