I2C：可以同时发生多个 I2C 错误吗？

Question

I write the driver for the I2C protocol, target microcontroller is STM32F413ZH . Don't ask me why I write my own driver (this is the project requirement).

I want to create simple public API returning error state, but I wonder whether multiple I2C errors can occur at the same time. If yes, my API cannot return just single enum type, but it should return something more complex like the structure consisting of bit fields of bool type or something else.

Anyway, the main question is:

Can multiple I2C errors occur simultaneously (at the same time)?

Answer 1

number of I2C errors is limited (limited by the number of bits in the status register).

More than one flag can be raised by the I2C hardware so usually I use bits for the particular error enum

typedef enum
{
    I2C_OK      = 0,
    I2C_ERROR1  = 1 << 0,
    I2C_ERROR2  = 1 << 1,
    I2C_ERROR3  = 1 << 2,
    I2C_ERROR4  = 1 << 3,
     /* other */
}I2C_ERRORS_ENUMS;