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##

# 2.120.2.23 TCx_CHy_CaptureCallbackRegister Function

## C

    /* x = TC instance number, y = channel number */
    void TCx_CHy_CaptureCallbackRegister ( TC_CAPTURE_CALLBACK callback, uintptr_t context )

## Summary

Registers the function to be called from the capture-event.

## Description

This function registers the callback function to be called from the interrupt when the selected capture event occurs.

## Precondition

TCx_CHy_CaptureInitialize() must have been called first.

## Parameters

Param | Description
--- | ---
callback | Callback function pointer.
context | Allows the caller to provide a context value (usually a pointer to the callers context for multi-instance clients)

## Returns

None.

## Example

    void TC_CallbackFn(TC_CAPTURE_STATUS status, uintptr_t context);

    TC0_CH1_CaptureInitialize();
    TC0_CH1_CaptureCallbackRegister(TC_CallbackFn, NULL);

## Remarks

Context value can be set to NULL if not required. To disable callback function, pass NULL for the callback parameter.