120 lines
3.3 KiB
C++
120 lines
3.3 KiB
C++
#include "WiFi.h"
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#define STA_SSID "nbis-test"
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#define STA_PASS "1234567890"
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#define AP_SSID "esp32"
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static volatile bool wifi_connected = false;
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WiFiUDP ntpClient;
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void wifiOnConnect(){
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Serial.println("STA Connected");
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Serial.print("STA IPv4: ");
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Serial.println(WiFi.localIP());
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ntpClient.begin(2390);
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}
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void wifiOnDisconnect(){
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Serial.println("STA Disconnected");
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delay(1000);
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WiFi.begin(STA_SSID, STA_PASS);
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}
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void wifiConnectedLoop(){
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//lets check the time
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const int NTP_PACKET_SIZE = 48;
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byte ntpPacketBuffer[NTP_PACKET_SIZE];
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IPAddress address;
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WiFi.hostByName("time.nist.gov", address);
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memset(ntpPacketBuffer, 0, NTP_PACKET_SIZE);
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ntpPacketBuffer[0] = 0b11100011; // LI, Version, Mode
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ntpPacketBuffer[1] = 0; // Stratum, or type of clock
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ntpPacketBuffer[2] = 6; // Polling Interval
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ntpPacketBuffer[3] = 0xEC; // Peer Clock Precision
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// 8 bytes of zero for Root Delay & Root Dispersion
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ntpPacketBuffer[12] = 49;
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ntpPacketBuffer[13] = 0x4E;
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ntpPacketBuffer[14] = 49;
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ntpPacketBuffer[15] = 52;
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ntpClient.beginPacket(address, 123); //NTP requests are to port 123
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ntpClient.write(ntpPacketBuffer, NTP_PACKET_SIZE);
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ntpClient.endPacket();
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delay(1000);
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int packetLength = ntpClient.parsePacket();
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if (packetLength){
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if(packetLength >= NTP_PACKET_SIZE){
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ntpClient.read(ntpPacketBuffer, NTP_PACKET_SIZE);
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}
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ntpClient.flush();
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uint32_t secsSince1900 = (uint32_t)ntpPacketBuffer[40] << 24 | (uint32_t)ntpPacketBuffer[41] << 16 | (uint32_t)ntpPacketBuffer[42] << 8 | ntpPacketBuffer[43];
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//Serial.printf("Seconds since Jan 1 1900: %u\n", secsSince1900);
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uint32_t epoch = secsSince1900 - 2208988800UL;
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//Serial.printf("EPOCH: %u\n", epoch);
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uint8_t h = (epoch % 86400L) / 3600;
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uint8_t m = (epoch % 3600) / 60;
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uint8_t s = (epoch % 60);
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Serial.printf("UTC: %02u:%02u:%02u (GMT)\n", h, m, s);
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}
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delay(9000);
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}
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void WiFiEvent(WiFiEvent_t event){
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switch(event) {
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case SYSTEM_EVENT_AP_START:
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//can set ap hostname here
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WiFi.softAPsetHostname(AP_SSID);
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//enable ap ipv6 here
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WiFi.softAPenableIpV6();
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break;
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case SYSTEM_EVENT_STA_START:
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//set sta hostname here
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WiFi.setHostname(AP_SSID);
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break;
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case SYSTEM_EVENT_STA_CONNECTED:
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//enable sta ipv6 here
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WiFi.enableIpV6();
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break;
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case SYSTEM_EVENT_AP_STA_GOT_IP6:
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//both interfaces get the same event
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Serial.print("STA IPv6: ");
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Serial.println(WiFi.localIPv6());
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Serial.print("AP IPv6: ");
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Serial.println(WiFi.softAPIPv6());
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break;
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case SYSTEM_EVENT_STA_GOT_IP:
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wifiOnConnect();
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wifi_connected = true;
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break;
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case SYSTEM_EVENT_STA_DISCONNECTED:
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wifi_connected = false;
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wifiOnDisconnect();
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break;
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default:
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break;
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}
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}
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void setup(){
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Serial.begin(115200);
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WiFi.disconnect(true);
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WiFi.onEvent(WiFiEvent);
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WiFi.mode(WIFI_MODE_APSTA);
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WiFi.softAP(AP_SSID);
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WiFi.begin(STA_SSID, STA_PASS);
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}
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void loop(){
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if(wifi_connected){
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wifiConnectedLoop();
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}
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while(Serial.available()) Serial.write(Serial.read());
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}
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