Add network device driver model, netdev

examples/net/http-postform/main.go

@@ -0,0 +1,62 @@
+// This example posts an URL using http.PostForm().  URL scheme can be http or https.
+//
+// Note: It may be necessary to increase the stack size when using "net/http".
+// Use the -stack-size=4KB command line option.
+//
+// Some targets (Arduino Nano33 IoT) don't have enough SRAM to run
+// http.PostForm().  Use the following for those targets:
+//
+//     examples/net/webclient (for HTTP)
+//     examples/net/tlsclient (for HTTPS)
+
+package main
+
+import (
+	"fmt"
+	"io"
+	"log"
+	"machine"
+	"net/http"
+	"net/url"
+	"time"
+)
+
+var (
+	ssid string
+	pass string
+)
+
+func main() {
+
+	waitSerial()
+
+	if err := netdev.NetConnect(); err != nil {
+		log.Fatal(err)
+	}
+
+	path := "https://httpbin.org/post"
+	data := url.Values{
+		"name":       {"John Doe"},
+		"occupation": {"gardener"},
+	}
+
+	resp, err := http.PostForm(path, data)
+	if err != nil {
+		log.Fatal(err)
+	}
+	defer resp.Body.Close()
+
+	body, err := io.ReadAll(resp.Body)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	fmt.Println(string(body))
+}
+
+// Wait for user to open serial console
+func waitSerial() {
+	for !machine.Serial.DTR() {
+		time.Sleep(100 * time.Millisecond)
+	}
+}

examples/net/http-postform/rtl8720dn.go

@@ -0,0 +1,29 @@
+//go:build wioterminal
+
+// +build: wioterminal
+
+package main
+
+import (
+	"machine"
+	"time"
+
+	"tinygo.org/x/drivers/rtl8720dn"
+)
+
+var cfg = rtl8720dn.Config{
+	// WiFi AP credentials
+	Ssid:       ssid,
+	Passphrase: pass,
+	// Device
+	En: machine.RTL8720D_CHIP_PU,
+	// UART
+	Uart:     machine.UART3,
+	Tx:       machine.PB24,
+	Rx:       machine.PC24,
+	Baudrate: 614400,
+	// Watchdog (set to 0 to disable)
+	WatchdogTimeo: time.Duration(20 * time.Second),
+}
+
+var netdev = rtl8720dn.New(&cfg)

examples/net/http-postform/wifinina.go

@@ -0,0 +1,33 @@
+//go:build pyportal || nano_rp2040 || metro_m4_airlift || arduino_mkrwifi1010 || matrixportal_m4
+
+// +build: pyportal nano_rp2040 metro_m4_airlift arduino_mkrwifi1010 matrixportal_m4
+
+package main
+
+import (
+	"machine"
+	"time"
+
+	"tinygo.org/x/drivers/wifinina"
+)
+
+var cfg = wifinina.Config{
+	// WiFi AP credentials
+	Ssid:       ssid,
+	Passphrase: pass,
+	// Configure SPI for 8Mhz, Mode 0, MSB First
+	Spi:  machine.NINA_SPI,
+	Freq: 8 * 1e6,
+	Sdo:  machine.NINA_SDO,
+	Sdi:  machine.NINA_SDI,
+	Sck:  machine.NINA_SCK,
+	// Device pins
+	Cs:     machine.NINA_CS,
+	Ack:    machine.NINA_ACK,
+	Gpio0:  machine.NINA_GPIO0,
+	Resetn: machine.NINA_RESETN,
+	// Watchdog (set to 0 to disable)
+	WatchdogTimeo: time.Duration(20 * time.Second),
+}
+
+var netdev = wifinina.New(&cfg)