13.2 HIF Message Header Structure

The HIF message is the data structure exchanged back and forth between the Host Interface and the WINC firmware. The HIF message header structure consists of three fields:

• The Group ID (8-bit) – a group ID is the category of the message. Valid categories are enumerated in tenuM2mReqGroup.
• Op Code (8-bit) – is a command number. Valid command number is a value enumerated in: tenuM2mConfigCmd and tenuM2mStaCmd, tenuM2mApCmd, and tenuM2mP2pCmd corresponding to configuration, STA mode, AP mode, and P2P mode commands.
  Note:

  • Refer to the m2m_types.h for the full list of commands.
  • The P2P mode is not supported after release v19.5.3.
• Payload Length (16-bit) – the payload length is shown in bytes (does not include header).