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