1.3.2.4.9 I2C_BB_CallbackRegister Function
C
void I2C_BB_CallbackRegister(I2CBB_CALLBACK callback, uintptr_t contextHandle)
Summary
Sets the pointer to the function (and it's context) to be called when the given I2C's transfer events occur.
Description
This function sets the pointer to a client function to be called "back" when the given I2C transfer events occur. It also passes a context value (usually a pointer to a context structure) that is passed into the function when it is called. The specified callback function will be called from the timer peripheral interrupt context.
Precondition
I2C_BB_Initialize must have been called for the associated I2C instance.
Parameters
Param | Description |
---|---|
callback | A pointer to a function with a calling signature defined by the I2CBB_CALLBACK data type. Setting this to NULL disables the callback feature. |
contextHandle | A value (usually a pointer) passed (unused) into the function identified by the callback parameter. |
Returns
None.
Example
void MyI2CCallback(uintptr_t context)
{
// This function will be called when the transfer completes. Note
// that this function executes in the context of the I2C interrupt.
}
I2C_BB_Initialize();
I2C_BB_CallbackRegister(MyI2CCallback, NULL);
Remarks
None.