diff options
Diffstat (limited to 'core/include/drivers/stm32_i2c.h')
| -rw-r--r-- | core/include/drivers/stm32_i2c.h | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/core/include/drivers/stm32_i2c.h b/core/include/drivers/stm32_i2c.h index ac0ea225..6efcf00e 100644 --- a/core/include/drivers/stm32_i2c.h +++ b/core/include/drivers/stm32_i2c.h @@ -14,6 +14,23 @@ #include <types_ext.h> /* + * I2C specification values as per version 6.0, 4th of April 2014 [1], + * table 10 page 48: Characteristics of the SDA and SCL bus lines for + * Standard, Fast, and Fast-mode Plus I2C-bus devices. + * + * [1] https://www.nxp.com/docs/en/user-guide/UM10204.pdf + */ +enum i2c_speed_e { + I2C_SPEED_STANDARD, /* 100 kHz */ + I2C_SPEED_FAST, /* 400 kHz */ + I2C_SPEED_FAST_PLUS, /* 1 MHz */ +}; + +#define I2C_STANDARD_RATE 100000 +#define I2C_FAST_RATE 400000 +#define I2C_FAST_PLUS_RATE 1000000 + +/* * Initialization configuration structure for the STM32 I2C bus. * Refer to the SoC Reference Manual for more details on configuration items. * |