diff options
Diffstat (limited to 'libmaple/stm32f1/include/series/i2c.h')
| -rw-r--r-- | libmaple/stm32f1/include/series/i2c.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/libmaple/stm32f1/include/series/i2c.h b/libmaple/stm32f1/include/series/i2c.h index f9f1e43..0c89df4 100644 --- a/libmaple/stm32f1/include/series/i2c.h +++ b/libmaple/stm32f1/include/series/i2c.h @@ -34,6 +34,7 @@ #define _LIBMAPLE_STM32F1_I2C_H_ #include <libmaple/i2c_common.h> +#include <libmaple/stm32.h> /* * Register maps @@ -53,4 +54,13 @@ struct i2c_reg_map; extern i2c_dev* const I2C1; extern i2c_dev* const I2C2; +/* + * For internal use + */ + +static inline uint32 _i2c_bus_clk(i2c_dev *dev) { + /* Both I2C peripherals are on APB1 */ + return STM32_PCLK1 / (1000 * 1000); +} + #endif /* _LIBMAPLE_STM32F1_I2C_H_ */ |