PN_API_IOD_arInDataCbf

typedef void(* PN_API_IOD_arInDataCbf) (PN_API_IOD_Handle_t *const pnHandle, const uint16_t arNum, const uint16_t sessionKey)

Callback function prototype to inform the user application that the cyclic data communication was started.

When the stack receives the first real-time IO data frame from the IO controller, it calls this callback function which needs to be implemented by the user application to handle this update or at least display it.

Parameters

[in]	pnHandle	Profinet API Handle.
[in]	arNum	AR number.
[in]	sessionKey	Session key.

Example

#include "pn_api_iod_callbacks.h"
#include "pn_api_iod_data.h"
#include "pn_api_iod_startup.h"
 
//Implement the callback function in the user application
uint32_t PN_APP_IOD_cbArInData(PN_API_IOD_Handle_t *const pnHandle,
const uint16_t arNum, const uint16_t sessionKey)
{...}
 
PN_API_IOD_Handle_t* pnHandle = NULL;
uint32_t status;
 
pnHandle = PN_API_IOD_new();
 
//Store callback functions implemented by the user application
PN_API_IOD_Callbacks_t callbacks = {
    .arInData = PN_APP_IOD_cbArInData,
    ...}
 
//Register callback function
status = PN_API_IOD_registerCallbacks(pnHandle, &callbacks);