1.12.18.7 QEIx_CallbackRegister Function
C
/* x = QEI instance number */ void QEIx_CallbackRegister ( QEI_CALLBACK callback, uintptr_t context )
Summary
Registers the function to be called from interrupt.
Description
This function registers the callback function to be called from interrupt
Precondition
QEIx_Initialize must have been called first.
Parameters
| Param | Description |
|---|---|
| callback | Callback function pointer |
| context | Value provided back to the caller by the callback (usually a pointer to the caller's context for multi-instance clients) |
Returns
None.
Example
void QEI_CallbackFn(QEI__STATUS status, uintptr_t context);
QEI_Initialize();
QEI_CallbackRegister(QEI_CallbackFn, NULL);
Remarks
Context value can be set to NULL if not required. To disable callback function, pass NULL for the callback parameter.