Merge branch 'feature/dhcp-server'

examples/access_point/Makefile

@@ -0,0 +1,5 @@
+# Makefile for access_point example
+PROGRAM=access_point
+EXTRA_COMPONENTS=extras/dhcpserver
+
+include ../../common.mk

examples/access_point/access_point.c

@@ -0,0 +1,97 @@
+/* Very basic example showing usage of access point mode and the DHCP server.
+
+   The ESP in the example runs a telnet server on 172.16.0.1 (port 23) that
+   outputs some status information if you connect to it, then closes
+   the connection.
+
+   This example code is in the public domain.
+*/
+#include <string.h>
+
+#include <espressif/esp_common.h>
+#include <esp/uart.h>
+#include <FreeRTOS.h>
+#include <task.h>
+#include <queue.h>
+#include <dhcpserver.h>
+
+#include <lwip/api.h>
+
+#define AP_SSID "esp-open-rtos AP"
+#define AP_PSK "esp-open-rtos"
+
+#define TELNET_PORT 23
+
+static void telnetTask(void *pvParameters);
+
+void user_init(void)
+{
+    uart_set_baud(0, 115200);
+    printf("SDK version:%s\n", sdk_system_get_sdk_version());
+
+    sdk_wifi_set_opmode(SOFTAP_MODE);
+    struct ip_info ap_ip;
+    IP4_ADDR(&ap_ip.ip, 172, 16, 0, 1);
+    IP4_ADDR(&ap_ip.gw, 0, 0, 0, 0);
+    IP4_ADDR(&ap_ip.netmask, 255, 255, 0, 0);
+    sdk_wifi_set_ip_info(1, &ap_ip);
+
+    struct sdk_softap_config ap_config = {
+        .ssid = AP_SSID,
+        .ssid_hidden = 0,
+        .channel = 3,
+        .ssid_len = strlen(AP_SSID),
+        .authmode = AUTH_WPA_WPA2_PSK,
+        .password = AP_PSK,
+        .max_connection = 3,
+        .beacon_interval = 100,
+    };
+    sdk_wifi_softap_set_config(&ap_config);
+
+    ip_addr_t first_client_ip;
+    IP4_ADDR(&first_client_ip, 172, 16, 0, 2);
+    dhcpserver_start(&first_client_ip, 4);
+
+    xTaskCreate(telnetTask, (signed char *)"telnetTask", 512, NULL, 2, NULL);
+}
+
+/* Telnet task listens on port 23, returns some status information and then closes
+   the connection if you connect to it.
+*/
+static void telnetTask(void *pvParameters)
+{
+  struct netconn *nc = netconn_new (NETCONN_TCP);
+  if(!nc) {
+    printf("Status monitor: Failed to allocate socket.\r\n");
+    return;
+  }
+  netconn_bind(nc, IP_ADDR_ANY, TELNET_PORT);
+  netconn_listen(nc);
+
+  while(1) {
+    struct netconn *client = NULL;
+    err_t err = netconn_accept(nc, &client);
+
+    if ( err != ERR_OK ) {
+      if(client)
+	netconn_delete(client);
+      continue;
+    }
+
+    ip_addr_t client_addr;
+    uint16_t port_ignore;
+    netconn_peer(client, &client_addr, &port_ignore);
+
+    char buf[80];
+    snprintf(buf, sizeof(buf), "Uptime %d seconds\r\n",
+	     xTaskGetTickCount()*portTICK_RATE_MS/1000);
+    netconn_write(client, buf, strlen(buf), NETCONN_COPY);
+    snprintf(buf, sizeof(buf), "Free heap %d bytes\r\n", (int)xPortGetFreeHeapSize());
+    netconn_write(client, buf, strlen(buf), NETCONN_COPY);
+    snprintf(buf, sizeof(buf), "Your address is %d.%d.%d.%d\r\n\r\n",
+             ip4_addr1(&client_addr), ip4_addr2(&client_addr),
+             ip4_addr3(&client_addr), ip4_addr4(&client_addr));
+    netconn_write(client, buf, strlen(buf), NETCONN_COPY);
+    netconn_delete(client);
+  }
+}