- Fri Aug 14, 2015 10:01 am
#25967
Hello Guys,
I have some trubble with my little project. I want to send temperature values to thinkspeak.
I 've connected the sensor to the esp8266 an i get the temperatur in picocom.
I've connected the esp8266 to thinkspeak and I get figures like 1, 2, 3, 4, to .... in the chart. But no temperature.
I just copied the examples for thinkspeak and ds18b20 together.
Thanks for your help
Tobias
I have some trubble with my little project. I want to send temperature values to thinkspeak.
I 've connected the sensor to the esp8266 an i get the temperatur in picocom.
I've connected the esp8266 to thinkspeak and I get figures like 1, 2, 3, 4, to .... in the chart. But no temperature.
I just copied the examples for thinkspeak and ds18b20 together.
Code: Select all
#include <user_config.h>
#include <SmingCore/SmingCore.h>
#include <Libraries/OneWire/OneWire.h>
#include <AppSettings.h>
#include <unistd.h>
#define WORK_PIN 3 // GPIO0
OneWire ds(WORK_PIN);
Timer procTimer;
int sensorValue = 0;
float celsius = 0;
HttpClient thingSpeak;
HttpServer server;
FTPServer ftp;
BssList networks;
String network, password;
Timer connectionTimer;
//Thingspeak
void onDataSent(HttpClient& client, bool successful)
{
if (successful)
Serial.println("Success sent");
else
Serial.println("Failed");
String response = client.getResponseString();
Serial.println("Server response: '" + response + "'");
if (response.length() > 0)
{
int intVal = response.toInt();
if (intVal == 0)
Serial.println("Sensor value wasn't accepted. May be we need to wait a little?");
}
}
//DS18B20
void readData()
{
byte i;
byte present = 0;
byte type_s;
byte data[12];
byte addr[8];
float fahrenheit;
ds.reset_search();
if (!ds.search(addr))
{
Serial.println("No addresses found.");
Serial.println();
ds.reset_search();
delay(250);
return;
}
Serial.print("Thermometer ROM =");
for( i = 0; i < 8; i++)
{
Serial.write(' ');
Serial.print(addr[i], HEX);
}
if (OneWire::crc8(addr, 7) != addr[7])
{
Serial.println("CRC is not valid!");
return;
}
Serial.println();
// the first ROM byte indicates which chip
switch (addr[0]) {
case 0x10:
Serial.println(" Chip = DS18S20"); // or old DS1820
type_s = 1;
break;
case 0x28:
Serial.println(" Chip = DS18B20");
type_s = 0;
break;
case 0x22:
Serial.println(" Chip = DS1822");
type_s = 0;
break;
default:
Serial.println("Device is not a DS18x20 family device.");
return;
}
ds.reset();
ds.select(addr);
ds.write(0x44, 1); // start conversion, with parasite power on at the end
delay(1000); // maybe 750ms is enough, maybe not
// we might do a ds.depower() here, but the reset will take care of it.
present = ds.reset();
ds.select(addr);
ds.write(0xBE); // Read Scratchpad
Serial.print(" Data = ");
Serial.print(present, HEX);
Serial.print(" ");
for ( i = 0; i < 9; i++)
{
// we need 9 bytes
data[i] = ds.read();
Serial.print(data[i], HEX);
Serial.print(" ");
}
Serial.print(" CRC=");
Serial.print(OneWire::crc8(data, 8), HEX);
Serial.println();
// Convert the data to actual temperature
// because the result is a 16 bit signed integer, it should
// be stored to an "int16_t" type, which is always 16 bits
// even when compiled on a 32 bit processor.
int16_t raw = (data[1] << 8) | data[0];
if (type_s)
{
raw = raw << 3; // 9 bit resolution default
if (data[7] == 0x10)
{
// "count remain" gives full 12 bit resolution
raw = (raw & 0xFFF0) + 12 - data[6];
}
} else {
byte cfg = (data[4] & 0x60);
// at lower res, the low bits are undefined, so let's zero them
if (cfg == 0x00) raw = raw & ~7; // 9 bit resolution, 93.75 ms
else if (cfg == 0x20) raw = raw & ~3; // 10 bit res, 187.5 ms
else if (cfg == 0x40) raw = raw & ~1; // 11 bit res, 375 ms
//// default is 12 bit resolution, 750 ms conversion time
}
celsius = (float)raw / 16.0;
fahrenheit = celsius * 1.8 + 32.0;
Serial.print(" Temperature = ");
Serial.print(celsius);
Serial.print(" Celsius, ");
Serial.print(fahrenheit);
Serial.println(" Fahrenheit");
Serial.println();
}
//Thingspeak
void sendData()
{
if (thingSpeak.isProcessing()) return; // We need to wait while request processing was completed
// Read our sensor value :)
sensorValue++;
{
thingSpeak.downloadString("http://api.thingspeak.com/update?key=7XQL253GLOXXXXXX&field1=" + String(celsius), onDataSent);
}
}
//Thingspeak
// Will be called when WiFi station was connected to AP
void connectOk()
{
Serial.println("I'm CONNECTED");
// Start send data loop
procTimer.initializeMs(25 * 1000, sendData).start(); // every 25 seconds
}
// Will be called when WiFi station timeout was reached
void connectFail()
{
Serial.println("I'm NOT CONNECTED. Need help :(");
// Start soft access point
WifiAccessPoint.enable(true);
WifiAccessPoint.config("CONFIG ME PLEEEEASE...", "", AUTH_OPEN);
// .. some you code for configuration ..
}
//HTTP Setting
void onIndex(HttpRequest &request, HttpResponse &response)
{
TemplateFileStream *tmpl = new TemplateFileStream("index.html");
auto &vars = tmpl->variables();
response.sendTemplate(tmpl); // will be automatically deleted
}
void onIpConfig(HttpRequest &request, HttpResponse &response)
{
if (request.getRequestMethod() == RequestMethod::POST)
{
AppSettings.dhcp = request.getPostParameter("dhcp") == "1";
AppSettings.ip = request.getPostParameter("ip");
AppSettings.netmask = request.getPostParameter("netmask");
AppSettings.gateway = request.getPostParameter("gateway");
debugf("Updating IP settings: %d", AppSettings.ip.isNull());
AppSettings.save();
}
TemplateFileStream *tmpl = new TemplateFileStream("settings.html");
auto &vars = tmpl->variables();
bool dhcp = WifiStation.isEnabledDHCP();
vars["dhcpon"] = dhcp ? "checked='checked'" : "";
vars["dhcpoff"] = !dhcp ? "checked='checked'" : "";
if (!WifiStation.getIP().isNull())
{
vars["ip"] = WifiStation.getIP().toString();
vars["netmask"] = WifiStation.getNetworkMask().toString();
vars["gateway"] = WifiStation.getNetworkGateway().toString();
}
else
{
vars["ip"] = "192.168.1.77";
vars["netmask"] = "255.255.255.0";
vars["gateway"] = "192.168.1.1";
}
response.sendTemplate(tmpl); // will be automatically deleted
}
void onFile(HttpRequest &request, HttpResponse &response)
{
String file = request.getPath();
if (file[0] == '/')
file = file.substring(1);
if (file[0] == '.')
response.forbidden();
else
{
response.setCache(86400, true); // It's important to use cache for better performance.
response.sendFile(file);
}
}
void onAjaxNetworkList(HttpRequest &request, HttpResponse &response)
{
JsonObjectStream* stream = new JsonObjectStream();
JsonObject& json = stream->getRoot();
json["status"] = (bool)true;
bool connected = WifiStation.isConnected();
json["connected"] = connected;
if (connected)
{
// Copy full string to JSON buffer memory
json.addCopy("network", WifiStation.getSSID());
}
JsonArray& netlist = json.createNestedArray("available");
for (int i = 0; i < networks.count(); i++)
{
if (networks[i].hidden) continue;
JsonObject &item = netlist.createNestedObject();
item.add("id", (int)networks[i].getHashId());
// Copy full string to JSON buffer memory
item.addCopy("title", networks[i].ssid);
item.add("signal", networks[i].rssi);
item.add("encryption", networks[i].getAuthorizationMethodName());
}
response.setAllowCrossDomainOrigin("*");
response.sendJsonObject(stream);
}
void makeConnection()
{
WifiStation.enable(true);
WifiStation.config(network, password);
AppSettings.ssid = network;
AppSettings.password = password;
AppSettings.save();
network = ""; // task completed
}
void onAjaxConnect(HttpRequest &request, HttpResponse &response)
{
JsonObjectStream* stream = new JsonObjectStream();
JsonObject& json = stream->getRoot();
String curNet = request.getPostParameter("network");
String curPass = request.getPostParameter("password");
bool updating = curNet.length() > 0 && (WifiStation.getSSID() != curNet || WifiStation.getPassword() != curPass);
bool connectingNow = WifiStation.getConnectionStatus() == eSCS_Connecting || network.length() > 0;
if (updating && connectingNow)
{
debugf("wrong action: %s %s, (updating: %d, connectingNow: %d)", network.c_str(), password.c_str(), updating, connectingNow);
json["status"] = (bool)false;
json["connected"] = (bool)false;
}
else
{
json["status"] = (bool)true;
if (updating)
{
network = curNet;
password = curPass;
debugf("CONNECT TO: %s %s", network.c_str(), password.c_str());
json["connected"] = false;
connectionTimer.initializeMs(1200, makeConnection).startOnce();
}
else
{
json["connected"] = WifiStation.isConnected();
debugf("Network already selected. Current status: %s", WifiStation.getConnectionStatusName());
}
}
if (!updating && !connectingNow && WifiStation.isConnectionFailed())
json["error"] = WifiStation.getConnectionStatusName();
response.setAllowCrossDomainOrigin("*");
response.sendJsonObject(stream);
}
void startWebServer()
{
server.listen(80);
server.addPath("/", onIndex);
server.addPath("/ipconfig", onIpConfig);
server.addPath("/ajax/get-networks", onAjaxNetworkList);
server.addPath("/ajax/connect", onAjaxConnect);
server.setDefaultHandler(onFile);
}
void startFTP()
{
if (!fileExist("index.html"))
fileSetContent("index.html", "<h3>Please connect to FTP and upload files from folder 'web/build' (details in code)</h3>");
// Start FTP server
ftp.listen(21);
ftp.addUser("me", "123"); // FTP account
}
// Will be called when system initialization was completed
void startServers()
{
startFTP();
startWebServer();
}
void networkScanCompleted(bool succeeded, BssList list)
{
if (succeeded)
{
for (int i = 0; i < list.count(); i++)
if (!list[i].hidden && list[i].ssid.length() > 0)
networks.add(list[i]);
}
networks.sort([](const BssInfo& a, const BssInfo& b){ return b.rssi - a.rssi; } );
}
void init()
{
Serial.begin(SERIAL_BAUD_RATE); // 115200 by default
Serial.systemDebugOutput(true); // Allow debug output to serial
AppSettings.load();
ds.begin(); // It's required for one-wire initialization!
procTimer.initializeMs(3000, readData).start();
//WifiStation.config(WIFI_SSID, WIFI_PWD);
//WifiStation.enable(true);
//WifiAccessPoint.enable(false);
// Run our method when station was connected to AP (or not connected)
WifiStation.waitConnection(connectOk, 20, connectFail); // We recommend 20+ seconds for connection timeout at start
WifiStation.enable(true);
if (AppSettings.exist())
{
WifiStation.config(AppSettings.ssid, AppSettings.password);
if (!AppSettings.dhcp && !AppSettings.ip.isNull())
WifiStation.setIP(AppSettings.ip, AppSettings.netmask, AppSettings.gateway);
}
WifiStation.startScan(networkScanCompleted);
// Start AP for configuration
WifiAccessPoint.enable(true);
WifiAccessPoint.config("Sming Configuration", "", AUTH_OPEN);
// Run WEB server on system ready
System.onReady(startServers);
}
Thanks for your help
Tobias
