This function reads an IPI message.
Prototype
u32 XMailbox_Recv(XMailbox *InstancePtr, u32 SourceId, void *BufferPtr, u32 MsgLen, u8 BufferType);Parameters
The following table lists the XMailbox_Recv function arguments.
| Type | Name | Description |
|---|---|---|
XMailbox
* |
InstancePtr |
Pointer to the
XMailbox
instance
|
| u32 | SourceId | is the Mask for the CPU which has sent the message |
| void * | BufferPtr | is the pointer to Buffer to which the read message needs to be stored |
| u32 | MsgLen | is the length of the buffer/message |
| u8 | BufferType | is the type of buffer (XILMBOX_MSG_TYPE_REQ or XILMBOX_MSG_TYPE_RESP) |
Returns
- XST_SUCCESS if successful
- XST_FAILURE if unsuccessful