Synopsis

typedef struct {
  CTL_STATUS_t (*transaction)(CTL_I2C_BUS_t *, CTL_I2C_REQUEST_t *);
  CTL_STATUS_t (*set_speed)(CTL_I2C_BUS_t *, unsigned);
  unsigned long __speed;
  CTL_MUTEX_t *mutex;
} CTL_I2C_BUS_t;

Description

CTL_I2C_BUS_t defines the interface to the device-independent I2C bus driver.

Structure

transaction

Private method to execute an I/O transaction on the I2C bus.

set_speed

Private method to set the operating speed of the I2C bus.

__speed

Consider this a read-only variable that indicates the selected speed of the I2C bus.

mutex

If this mutex is non-zero, the I2C functions will acquire the mutex before proceeding to use the I2C bus. For systems that do not share the I2C bus between tasks, the mutex can be zero and it's the user's responsibility to ensure mutual exclusion on the I2C bus.