wifi/espat, rtl8720dn, wifinina, net: modify to use Adapter interface

Signed-off-by: deadprogram <ron@hybridgroup.com>

net/adapter.go

@@ -1,6 +1,23 @@
 package net
 
-type DeviceDriver interface {
+import (
+	"errors"
+	"time"
+)
+
+var (
+	ErrWiFiMissingSSID    = errors.New("missing SSID")
+	ErrWiFiConnectTimeout = errors.New("WiFi connect timeout")
+)
+
+// Adapter interface is used to communicate with the network adapter.
+type Adapter interface {
+	// functions used to connect/disconnect to/from an access point
+	ConnectToAccessPoint(ssid, pass string, timeout time.Duration) error
+	Disconnect() error
+	GetClientIP() (string, error)
+
+	// these functions are used once the adapter is connected to the network
 	GetDNS(domain string) (string, error)
 	ConnectTCPSocket(addr, port string) error
 	ConnectSSLSocket(addr, port string) error
@@ -16,12 +33,12 @@ type DeviceDriver interface {
 	Response(timeout int) ([]byte, error)
 }
 
-var ActiveDevice DeviceDriver
+var ActiveDevice Adapter
 
-func UseDriver(driver DeviceDriver) {
+func UseDriver(a Adapter) {
 	// TODO: rethink and refactor this
 	if ActiveDevice != nil {
 		panic("net.ActiveDevice is already set")
 	}
-	ActiveDevice = driver
+	ActiveDevice = a
 }

net/mqtt/mqtt.go

@@ -23,7 +23,7 @@ func NewClient(o *ClientOptions) Client {
 }
 
 type mqttclient struct {
-	adaptor         net.DeviceDriver
+	adaptor         net.Adapter
 	conn            net.Conn
 	connected       bool
 	opts            *ClientOptions

net/mqtt/paho.go

@@ -175,7 +175,7 @@ type ClientOptionsReader struct {
 
 // ClientOptions contains configurable options for an MQTT Client.
 type ClientOptions struct {
-	Adaptor net.DeviceDriver
+	Adaptor net.Adapter
 
 	//Servers                 []*url.URL
 	Servers  string

net/net.go

@@ -94,7 +94,7 @@ func Dial(network, address string) (Conn, error) {
 
 // SerialConn is a loosely net.Conn compatible implementation
 type SerialConn struct {
-	Adaptor DeviceDriver
+	Adaptor Adapter
 }
 
 // UDPSerialConn is a loosely net.Conn compatible intended to support