Using WiFiManager and Thingspeak library crashes ESP-01
Posted: Mon Oct 17, 2016 4:45 amHi there,
I've implemented the WiFiManager and wanted to add a Thingspeak capability by using the library.
Compiling works fine but once uploaded, the ESP-01 chip goes into a reset after executing the write instruction (btw. same problem by running on NodeMCU 0.9)
Code and error message are shown below - any idea what is causing the problem??
(I've run several tests in this code hence some unused "code debris" are existing..)
I also tried to run without the WifiManager and initialized the Wifi on "conventional" way - then it worked without problems. So the reason seems to be linked to WifiManager in conjunction with Thinkspeak library?!
Error message is as follows:
Arduino-IDE: 1.6.12
Thingspeak library (by MathWorks) 1.2.1
WiFiManager 0.12.0
ESP-01 512k -> Generic ESP8266 Module selected
For sake of completeness the config.h as well
I've implemented the WiFiManager and wanted to add a Thingspeak capability by using the library.
Compiling works fine but once uploaded, the ESP-01 chip goes into a reset after executing the write instruction (btw. same problem by running on NodeMCU 0.9)
Code: Select all
ThingSpeak.writeField(myChannelNumber, 1, temperature, myWriteAPIKey);
Code and error message are shown below - any idea what is causing the problem??
(I've run several tests in this code hence some unused "code debris" are existing..)
I also tried to run without the WifiManager and initialized the Wifi on "conventional" way - then it worked without problems. So the reason seems to be linked to WifiManager in conjunction with Thinkspeak library?!
Code: Select all
#include <Arduino.h>
#define DEBUGPRINT // E/D Debug output
#define DEBUG_MODE
#include "config.h"
#include <ESP8266WiFi.h>
#include <WiFiClient.h>
#include <DNSServer.h>
#include <ESP8266WebServer.h>
#include <WiFiManager.h> //https://github.com/tzapu/WiFiManager
#include <Wire.h>
#include "TMP100.h"
#include "ThingSpeak.h"
//String clientName;
//WiFiClient wifiClient;
// Temperaturesensor
TMP100 myTMP100(TMP100_ID); // create a instance of the sensor
ADC_MODE(ADC_VCC);
float temperature; // this will hold the floating-point temperature
//float t = 0;
int vcc;
long startMills;
/* ================================================================================
* Setup
* ================================================================================
*/
void setup(void)
{
//ESP.eraseConfig();
startMills = millis();
// start serial port
Serial.begin(BAUDRATE);
//-------------------
DBP();
WiFiManager wifi;
//wifi.resetSettings();
wifi.setTimeout(120); //so if it restarts and router is not yet online, it keeps rebooting and retrying to connect
if (!wifi.autoConnect("Temperatursensor")) {
DBP("timeout - going to sleep");
DBP(millis() - startMills);
delay(1000);
}
//-------
//setup hardware
WiFiClient myClient;
//Wire.pins(int sda, int scl), etc
Wire.pins(0, 2); //on ESP-01.
Wire.begin();
delay(20);
#ifdef DEBUG_MODE
DBP("Debug-Mode, fixed Temp used");
#else
myTMP100.init(); // initialize sensor
#endif
delay(1000);
DBP("WiFi Client");
ThingSpeak.begin(myClient);
}
/* ================================================================================
* Main LOOP
* ================================================================================
*/
void loop(void)
{
vcc = ESP.getVcc();//readvdd33();
// original loop
DBP_("Supply: ");
DBP((float)vcc/1000);
// -----------------------------------------
#ifdef DEBUG_MODE
temperature=23.4;
#else
temperature = myTMP100.temperature(); //get temperature from the sensor
#endif
DBP_("Temperature: ");
DBP(temperature);
delay(10);
sendData();
DBP("DONE");
}
/* ================================================================================
* Sending data to the server
* ================================================================================
*/
void sendData() {
DBP("schreibe in Thingspeak ...");
// ThingSpeak.writeField(myChannelNumber, 1, temperature, myWriteAPIKey);
ThingSpeak.writeField(myChannelNumber, 1, temperature, myWriteAPIKey);
}
Error message is as follows:
Code: Select all
*WM:
*WM: AutoConnect
*WM: Connecting as wifi client...
*WM: Using last saved values, should be faster
*WM: Connection result:
*WM: 3
*WM: IP Address:
*WM: 192.168.178.4
Debug-Mode, fixed Temp used
WiFi Client
Supply: 3.14
Temperature: 23.40
schreibe in Thingspeak ...
Exception (28):
epc1=0x402021f1 epc2=0x00000000 epc3=0x00000000 excvaddr=0x00000024 depc=0x00000000
ctx: cont
sp: 3fff0300 end: 3fff0590 offset: 01a0
>>>stack>>>
3fff04a0: 3ffe880c 00029eaf 3fff053c 3ffef564
3fff04b0: 00000010 3fff0524 3fff0524 402090b4
3fff04c0: 3fff14cc 0000000f 3fff0524 3ffef564
3fff04d0: 3ffe880c 3fff0524 3ffef33c 402023e0
3fff04e0: 3ffe880c 00029eaf 3fff0524 4020923c
3fff04f0: 3ffe880c 00029eaf 41bb3333 40209264
3fff0500: 3ffe880c 00029eaf 41bb3333 40202602
3fff0510: 342e3332 30303030 00189f00 00000000
3fff0520: 401059f8 3fff14b4 0000000f 0000000f
3fff0530: 00000000 00000000 00000000 00000000
3fff0540: 00000000 00000000 3fff14cc 0000000f
3fff0550: 0000000f 3fff0e5c 0000000f 00000008
3fff0560: 3fffdad0 3ffef2b0 3ffef4a8 402026e0
3fff0570: 3fffdad0 00000000 3ffef55c 40209b18
3fff0580: feefeffe feefeffe 3ffef570 40100718
<<<stack<<<
ets Jan 8 2013,rst cause:2, boot mode:(3,7)
load 0x4010f000, len 1384, room 16
tail 8
chksum 0x2d
csum 0x2d
v3de0c112
Arduino-IDE: 1.6.12
Thingspeak library (by MathWorks) 1.2.1
WiFiManager 0.12.0
ESP-01 512k -> Generic ESP8266 Module selected
For sake of completeness the config.h as well
Code: Select all
// TMP100
const byte TMP100_ID = 0x48; // address of the first TMP100 0x48=144d
//const byte TMP100_ID = 0x4A; // address of the first TMP100 0x4A=148d
// Baudrate für serielle Kommunikation
const long BAUDRATE = 115200;
// Helpful for debugging
#ifdef DEBUGPRINT
#define DBP(x) Serial.println (x)
#define DBP_(x) Serial.print (x)
#else
#define DBP(x)
#define DBP_(x)
#endif
// Thingspeak
unsigned long myChannelNumber = 171695;
const char * myWriteAPIKey = "****************";