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Get time from WiFi.getTime() #2

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Get time from WiFi.getTime() #2

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42 changes: 1 addition & 41 deletions uno_wifi.ino
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Original file line number Diff line number Diff line change
Expand Up @@ -52,46 +52,6 @@ float accelValue[3] = {0.0, 0.0, 0.0};
// die property value
int dieNumberValue = 1;

// grab the current time from internet time service
unsigned long getNow()
{
IPAddress address(129, 6, 15, 28); // time.nist.gov NTP server
const int NTP_PACKET_SIZE = 48;
byte packetBuffer[NTP_PACKET_SIZE];
WiFiUDP Udp;
Udp.begin(2390);

memset(packetBuffer, 0, NTP_PACKET_SIZE);
packetBuffer[0] = 0b11100011; // LI, Version, Mode
packetBuffer[1] = 0; // Stratum, or type of clock
packetBuffer[2] = 6; // Polling Interval
packetBuffer[3] = 0xEC; // Peer Clock Precision
packetBuffer[12] = 49;
packetBuffer[13] = 0x4E;
packetBuffer[14] = 49;
packetBuffer[15] = 52;
Udp.beginPacket(address, 123);
Udp.write(packetBuffer, NTP_PACKET_SIZE);
Udp.endPacket();

// wait to see if a reply is available
int waitCount = 0;
while (waitCount < 20) {
delay(500);
waitCount++;
if (Udp.parsePacket() ) {
Udp.read(packetBuffer, NTP_PACKET_SIZE);
unsigned long highWord = word(packetBuffer[40], packetBuffer[41]);
unsigned long lowWord = word(packetBuffer[42], packetBuffer[43]);
unsigned long secsSince1900 = highWord << 16 | lowWord;

Udp.stop();
return (secsSince1900 - 2208988800UL);
}
}
return 0;
}

// IoT Hub MQTT publish topics
static const char IOT_EVENT_TOPIC[] = "devices/{device_id}/messages/events/";
static const char IOT_TWIN_REPORTED_PROPERTY[] = "$iothub/twin/PATCH/properties/reported/?$rid={request_id}";
Expand Down Expand Up @@ -296,7 +256,7 @@ void setup()
// create SAS token and user name for connecting to MQTT broker
String url = iothubHost + urlEncode(String("/devices/" + deviceId).c_str());
char *devKey = (char *)sharedAccessKey.c_str();
long expire = getNow() + 864000;
long expire = WiFi.getTime() + 864000;
String sasToken = createIotHubSASToken(devKey, url, expire);
String username = iothubHost + "/" + deviceId + "/api-version=2016-11-14";

Expand Down