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The network stack calls the driver's power up function.

The network stack sets the link input and state callbacks.

The network stack configures the EMAC memory manager class reference for the driver.

Steps that the network stack uses to power the EMAC driver: When the network interface is brought up, the network stack powers the EMAC driver. The EMAC driver class is instantiated during the creation of the network interface. There are also callback registration functions for upcalls from the driver - the stack can register callback functions for packet reception and link status changes. The EMAC-derived driver would normally be installed in features/netsocket/emac-drivers, often in a TARGET_XXX directory.Ĭlass EMAC is entirely abstract - you need to implement about a dozen calls to activate the driver, send and receive packets and perform other control and information functions. A network stack (or test framework) uses this API to control your driver. You must derive this class from the EMAC class. The first step in the port is to create a driver class that you can instantiate to control your device.

EMACInterface- a NetworkInterface that uses an EMAC driver and an OnboardNetworkStack.

EMACMemoryManager - a memory manager used to pass data between driver and stack.

OnboardNetworkStack - an onboard network stack.

NetworkStack - an Mbed OS network stack of any type (may be off-board).

NetworkInterface - an Mbed OS network interface of any type.

The EMAC interface abstracts network stacks and drivers and easily permits multiple instances. (If the device has an off-board network stack, a driver needs to implement NetworkStack directly instead to pass network calls to the offboard stack). The scope of this document is limited to Ethernet (IEEE 802.3) or Ethernet-like devices, such as Wi-Fi (IEEE 802.11), where the device presents a MAC interface to send and receive frames, and one of the onboard network stacks that runs on Mbed OS on the host processor uses this. This document describes how to port and test an Ethernet MAC (EMAC) driver to Mbed OS. Ethernet MAC (EMAC) drivers Ethernet MAC (EMAC) drivers