====== OSA : OS_Smsg_Check ======
<color blue>**bool OS_Smsg_Check (smsg)**</color>\\ 
<color blue>**bool OS_Smsg_Check_I (smsg)**</color>\\ 
=== ===


Check if simple message //smsg// is present.

=== Call allowed: ===
Everywhere


=== Parameters: ===
{| class = "fpl"
|-
|//''smsg''//
|Simple message descriptor. Variable of ##[[en:osa:ref:description:data_types#OST_SMSG|OST_SMSG]]## type
|}


=== Returns: ===
{| class = "fpl"
|-
|//''false''//
| //smsg// absent (zero)
|-
|//''true''//
| //smsg// present (non-zero)
|}


=== Example: ===
<code cpp>
OST_SMSG smsg;

void Task (void)
{
    OST_SMSG SM;
    for (;;) {
        /*...*/
        if (OS_Smsg_Check (smsg)) {     // If smsg present
            OS_Smsg_Accept(smsg, SM);   // Accept it and store in SM variable
            /*...*/
        }
        /*...*/
    }
}
</code>


=== Old style name ===
<color gray>**OS_CheckSMsg**</color>\\ 








=== See also ===
  * [[en:osa:ref:allservices:OS_Smsg_Create|OS_Smsg_Create]]

  * [[en:osa:ref:allservices:OS_Smsg_Send|OS_Smsg_Send]]
  * [[en:osa:ref:allservices:OS_Smsg_Send_TO|OS_Smsg_Send_TO]]
  * [[en:osa:ref:allservices:OS_Smsg_Send_Now|OS_Smsg_Send_Now]]


  * [[en:osa:ref:allservices:OS_Smsg_Accept|OS_Smsg_Accept]]

  * [[en:osa:ref:allservices:OS_Smsg_Wait|OS_Smsg_Wait]]
  * [[en:osa:ref:allservices:OS_Smsg_Wait_TO|OS_Smsg_Wait_TO]]

----
  * [[en:osa:ref:services:alphabetical|Alphabetical]]
  * [[en:osa:ref:services:brieflist|All services]]
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