Take measure of Temperature from BMP180
This commit is contained in:
Mathieu Maret
parent
758c9f8808
commit
390b18b592
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@ -0,0 +1,16 @@
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int getTemperature(double &t) {
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char status;
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status = pressure.startTemperature();
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if (status != 0)
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{
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// Wait for the measurement to complete:
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delay(status);
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status = pressure.getTemperature(t);
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if (status != 0)
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return 0;
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else
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return -1;
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} else {
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return -1;
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}
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}
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/* EEPROM LAYOUT
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"BOOTMODE;SSID;PASSWORD;HOSTNAME;"
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BOOTMODE could be 0 for Setup, 1 for normal use, 2 for OTA
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Setup mode is trigger by setting GPIO3 to ground or at first boot
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*/
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int saveConfig(int bootMode, String ssid, String password, String host ) {
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String eeprom;
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eeprom = String(bootMode) + ";" + ssid + ";" + password + ";" + host + ";";
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if (eeprom.length() > EEPROM_SIZE )
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return -EMSGSIZE;
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Serial.println("Saving " + eeprom);
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for (int i = 0; i < eeprom.length() && i < EEPROM_SIZE; i++) {
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EEPROM.write(i, eeprom.charAt(i));
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}
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EEPROM.commit();
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delay(100);
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return 0;
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}
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int saveBootMode(int bootMode){
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EEPROM.write(0,String(bootMode).charAt(0));
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EEPROM.commit();
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delay(100);
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return 0;
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}
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void readEEPROM(int &bootMode, char **ssid, char **password, char **host) {
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int i = 2;
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int boot = EEPROM.read(0);
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if (boot == '1') {
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bootMode = BOOTMODE_NORMAL;
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} else if (boot == '2') {
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bootMode = BOOTMODE_OTA;
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} else {
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//Do not need to parse EEPROM when not configured
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bootMode = BOOTMODE_SETUP;
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return;
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}
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//Read SSID
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*ssid = &eeprom[2];
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do {
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eeprom[i] = EEPROM.read(i);
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i++;
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} while (i < EEPROM_SIZE && eeprom[i - 1] != ';');
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eeprom[i - 1] = '\0';
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//Read password
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*password = &eeprom[i];
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do {
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eeprom[i] = EEPROM.read(i);
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i++;
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} while (i < EEPROM_SIZE && eeprom[i - 1] != ';');
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eeprom[i - 1] = '\0';
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//Read HostName
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*host = &eeprom[i];
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do {
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eeprom[i] = EEPROM.read(i);
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i++;
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} while (i < EEPROM_SIZE && eeprom[i - 1] != ';');
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eeprom[i - 1] = '\0';
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}
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void handleRoot() {
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server.send(200, "text/html", "<h1>You are connected</h1><br/>"
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"<a href=\"/setup\">Setup</a><br/>"
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"<a href=\"/otamode\">OTA mode</a><br/>"
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"<a href=\"/gpio?gpio=2&value=1\">ON</a><br/>"
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"<a href=\"/gpio?gpio=2&value=0\">OFF</a><br/>"
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);
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}
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void handleSetup() {
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server.send(200, "text/html", "<form action=\"/save\" method=\"get\">"
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"<div><label for=\"ssid\">Wifi SSID :</label> <input type=\"text\" name=\"ssid\" /></div>"
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"<div><label for=\"password\">Wifi Password :</label><input type=\"password\" name=\"password\" /> </div>"
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"<div><label for=\"host\">Hostname :</label><input type=\"text\" name=\"host\" /> </div>"
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"<div class=\"button\"> <button type=\"submit\">Save</button></div>"
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"</form>");
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}
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void handleGpio() {
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if (!server.hasArg("gpio") || !server.hasArg("value")) {
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server.send(500, "text/plain", "Bad arguments\r\n");
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return;
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}
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pinMode(server.arg("gpio").toInt(), OUTPUT);
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digitalWrite(server.arg("gpio").toInt(), server.arg("value").toInt());
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server.send(200, "text/html", "<h1>GPIO" + server.arg("gpio") + " changed to " + server.arg("value") + "</h1>");
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}
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void handleSave() {
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String password;
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String ssid;
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String hostName;
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if (!server.hasArg("ssid") || !server.hasArg("password") || !server.hasArg("host")) {
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server.send(500, "text/plain", "Bad arguments\r\n");
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return;
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}
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if (saveConfig(BOOTMODE_NORMAL, server.arg("ssid"), server.arg("password"), server.arg("host")) < 0) {
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server.send(500, "text/plain", "Cannot Save Credentials (Too long ?Contains \";\"?)\r\n");
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return;
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}
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server.send(200, "text/html", "<h1>Configuration Saved</h1><br/>"
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"You can reboot now");
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}
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void handleOTA() {
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Serial.println("Boot mode Set to OTA");
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saveBootMode(BOOTMODE_OTA);
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server.send(200, "text/html", "<h1>OTA Mode set</h1><br/>"
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"You can reboot now");
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}
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void handleNotFound() {
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String message = "File Not Found\n\n";
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message += "URI: ";
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message += server.uri();
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message += "\nMethod: ";
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message += (server.method() == HTTP_GET) ? "GET" : "POST";
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message += "\nArguments: ";
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message += server.args();
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message += "\n";
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for (uint8_t i = 0; i < server.args(); i++) {
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message += " " + server.argName(i) + ": " + server.arg(i) + "\n";
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}
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server.send(404, "text/plain", message);
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}
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void setupWebServer(int bootmode) {
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server.on("/", handleRoot);
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server.on("/setup", handleSetup);
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server.on("/save", handleSave);
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if (bootmode == BOOTMODE_NORMAL){
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server.on("/gpio", handleGpio);
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server.on("/otamode", handleOTA);
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}
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server.onNotFound(handleNotFound);
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server.begin();
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Serial.println("HTTP server started");
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}
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@ -0,0 +1,203 @@
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/* Generic GPIO Control by HTTP REST interface */
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/* Modify GPIO by accessing DEVICE_IP/gpio?gpio=[GPIO]&value=[0|1] */
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/* At first boot it creates a WiFi access point */
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/* and provide a web server on it, so you can configure Wifi ssid */
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/* Wifi passwd, and a mDNS hostname */
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/* In this mode, device will be available at 192.168.4.1 */
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/* Device can also be put in OTA Mode: In this case, if you have */
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/* a little flash (512K), it better to disable SPIFFS in */
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/* "Flash Size" Menu. Use espota.py to upload OTA */
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/* After passing in OTA mode, next boot will be in setup mode */
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/* To Use GPIO 3 And 1, uncomment #define ENABLE_EXTRA_GPIO */
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/* but Serial will be available on GPIO 15 and 13 */
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#include <ESP8266WiFi.h>
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#include <WiFiClient.h>
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#include <ESP8266WebServer.h>
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#include <ESP8266mDNS.h>
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#include <EEPROM.h>
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#include <ArduinoOTA.h>
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#include <errno.h>
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#include <SFE_BMP180.h>
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#include <Wire.h>
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//#define ENABLE_EXTRA_GPIO
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#define EEPROM_SIZE 512
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char eeprom[EEPROM_SIZE];
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#define WEB_DELAY_MS 100
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#define SAMPLING_PERIODE_MS 5000
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/* I2C pin used*/
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#define SDA 2
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#define SCL 14
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#define BOOTMODE_SETUP 0
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#define BOOTMODE_NORMAL 1
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#define BOOTMODE_OTA 2
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int mode;
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/* Set these to your desired credentials. */
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const char *ssid = "ESPConfigurator";
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ESP8266WebServer server(80);
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SFE_BMP180 pressure;
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/* WebServer decl*/
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void handleRoot();
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void handleSetup();
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void handleGpio();
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void handleSave();
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void handleOTA();
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void handleNotFound();
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void setupWebServer(int bootmode);
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/* EEPROM decl */
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int saveConfig(int bootMode, String ssid, String password, String host );
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int saveBootMode(int bootMode);
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void readEEPROM(int &bootMode, char **ssid, char **password, char **host);
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/* BMP180 decl */
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int getTemperature(double &t);
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void setupWifi(int bootmode, int forceSetup, char *confSsid, char *confPassword, char *confHost) {
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IPAddress myIP;
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if (bootmode == BOOTMODE_SETUP || forceSetup) {
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Serial.println("Configuring access point...");
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/* You can set a password to the AP here */
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WiFi.softAP(ssid);
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myIP = WiFi.softAPIP();
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} else {
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Serial.println("Connecting to Wifi...");
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WiFi.begin(confSsid, confPassword);
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while (WiFi.status() != WL_CONNECTED) {
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delay(500);
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Serial.print(".");
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}
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Serial.println("");
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Serial.println("WiFi connected");
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if (!MDNS.begin(confHost)) {
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Serial.println("Error setting up MDNS responder!");
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while (1) {
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delay(1000);
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}
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}
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Serial.println("mDNS responder started");
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myIP = WiFi.localIP();
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}
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Serial.print("My IP address: ");
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Serial.println(myIP);
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}
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void setupOTA() {
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// Port defaults to 8266
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// ArduinoOTA.setPort(8266);
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// Hostname defaults to esp8266-[ChipID]
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// ArduinoOTA.setHostname("myesp8266");
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// No authentication by default
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// ArduinoOTA.setPassword((const char *)"123");
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//Disable OTA mode to avoid forever loop
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//Force BOOTMODE_SETUP in case eeprom layout have changed
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saveConfig(BOOTMODE_SETUP, "", "", "" );
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ArduinoOTA.onStart([]() {
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Serial.println("Start");
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});
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ArduinoOTA.onEnd([]() {
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Serial.println("\nEnd");
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});
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ArduinoOTA.onProgress([](unsigned int progress, unsigned int total) {
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Serial.printf("Progress: %u%%\r", (progress / (total / 100)));
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});
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ArduinoOTA.onError([](ota_error_t error) {
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Serial.printf("Error[%u]: ", error);
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if (error == OTA_AUTH_ERROR) Serial.println("Auth Failed");
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else if (error == OTA_BEGIN_ERROR) Serial.println("Begin Failed");
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else if (error == OTA_CONNECT_ERROR) Serial.println("Connect Failed");
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else if (error == OTA_RECEIVE_ERROR) Serial.println("Receive Failed");
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else if (error == OTA_END_ERROR) Serial.println("End Failed");
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});
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ArduinoOTA.begin();
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Serial.println("Ready");
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Serial.print("IP address: ");
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Serial.println(WiFi.localIP());
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Serial.print("Free Space: ");
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Serial.println(ESP.getFreeSketchSpace());
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}
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void setup() {
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pinMode(3, OUTPUT);
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char *confSsid;
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char *confPassword;
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char *confHost;
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delay(1000);
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Serial.begin(115200);
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Serial.println();
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// Get GPIO 3 Status
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Serial.swap(); //Switch Serial on GPIO 13 & 15
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pinMode(3, INPUT_PULLUP);
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int txStatus = digitalRead(3);
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#ifndef ENABLE_EXTRA_GPIO
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Serial.swap(); // Switch back on GPIO 1 & 3
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#endif
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EEPROM.begin(EEPROM_SIZE);
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readEEPROM(mode, &confSsid, &confPassword, &confHost);
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if (mode == BOOTMODE_NORMAL || mode == BOOTMODE_OTA) {
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Serial.println("Configuration Found !:");
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Serial.println(mode);
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Serial.println(confSsid);
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Serial.println(confPassword);
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Serial.println(confHost);
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Serial.println();
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} else {
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Serial.println("No configuration saved");
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}
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Serial.print("Force Setup Mode ? :");
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Serial.print(txStatus?"No":"Yes");
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Serial.println();
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setupWifi(mode, txStatus == 0, confSsid, confPassword, confHost);
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if (mode == BOOTMODE_OTA) {
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setupOTA();
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} else {
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if (pressure.begin(SDA, SCL))
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Serial.println("BMP180 init success");
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setupWebServer(mode);
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}
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}
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uint nbCycle = 0;
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double temp;
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void loop() {
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if (mode == BOOTMODE_OTA) {
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ArduinoOTA.handle();
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} else {
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server.handleClient();
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delay(WEB_DELAY_MS);
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nbCycle++;
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if (nbCycle > SAMPLING_PERIODE_MS/WEB_DELAY_MS){
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if(getTemperature(temp) == 0){
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Serial.print("Sampling :");
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Serial.println(temp);
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}else{
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Serial.println("Cannot get T°C");
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}
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nbCycle = 0;
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}
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}
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}
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