This function checks the mailbox to see if a message is available. Unlike OSMboxPend(),
OSMboxAccep - 资源详细说明
This function checks the mailbox to see if a message is available. Unlike OSMboxPend(),
OSMboxAccept() does not suspend the calling task if a message is not available.
This function checks the mailbox to see if a message is available. Unlike OSMboxPend(),
OSMboxAccep - 源码文件列表