Configuration enumerations and structures for the I2C driver. More...

Collaboration diagram for I2C Types:

Classes
struct	I2C_CFG_ts
	Configuration structure for initializing an I2C peripheral. More...

Enumerations
enum	I2C_CLOCK_STRECH_te { I2C_CLOCK_STRETCH_ON , I2C_CLOCK_STRETCH_OFF }
	I2C slave clock stretching enable/disable. More...
enum	I2C_ACK_te { I2C_ACK_OFF , I2C_ACK_ON }
	I2C acknowledge control. More...
enum	I2C_SPEED_te { I2C_SPEED_100kHz = 100000 , I2C_SPEED_400kHz = 400000 }
	I2C bus speed (SCL frequency). More...

Detailed Description

Configuration enumerations and structures for the I2C driver.

Enumeration Type Documentation

I2C slave clock stretching enable/disable.

When enabled, the slave may hold SCL low to pause the master and buy time to prepare data. When disabled, clock stretching is not permitted.

Enumerator
I2C_CLOCK_STRETCH_ON	Allow slave clock stretching (NOSTRETCH = 0).
I2C_CLOCK_STRETCH_OFF	Disable slave clock stretching (NOSTRETCH = 1).

Definition at line 61 of file stm32f401re_i2c.h.

             {
    I2C_CLOCK_STRETCH_ON,  
    I2C_CLOCK_STRETCH_OFF  
} I2C_CLOCK_STRECH_te;

I2C acknowledge control.

Enumerator
I2C_ACK_OFF	Disable ACK generation after each received byte.
I2C_ACK_ON	Enable ACK generation after each received byte.

Definition at line 69 of file stm32f401re_i2c.h.

             {
    I2C_ACK_OFF, 
    I2C_ACK_ON   
} I2C_ACK_te;

I2C bus speed (SCL frequency).

The CCR and TRISE registers are computed automatically from the APB1 peripheral clock during i2c_init based on the selected speed.

Enumerator
I2C_SPEED_100kHz	Standard mode: 100 kHz, 50% duty cycle.
I2C_SPEED_400kHz	Fast mode: 400 kHz, 9/16 duty cycle (DUTY = 1).

Definition at line 81 of file stm32f401re_i2c.h.

             {
    I2C_SPEED_100kHz = 100000, 
    I2C_SPEED_400kHz = 400000  
} I2C_SPEED_te;