Difference between revisions of "ESP8266"

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=ESP8266 =
 
=ESP8266 =
 +
==My ESP8266 adventures history==
 +
* 14 July 2016 - Ohh snap! Discovered homie arduino / MQTT goodness for ESP8266. Implemented mqttwarn to rewrite topics
 +
* 12 July 2016 - Began working with Nodemcu using esplorer
 +
* 19 September 2015 connected a ESP8266-01 to an arduino as a serial terminal.
 +
 
==Resources==
 
==Resources==
 +
*[https://github.com/arendst/Sonoff-Tasmota/wiki/Esptool Sonoff-Tasmota Esptool]
 +
*Decent writeup on [http://www.esp8266.com/viewtopic.php?f=9&t=820 FTDI config] with RTS and DTR
 +
*[https://github.com/jpmens/mqttwarn mqttwarn]
 +
*[https://github.com/marvinroger/homie-esp8266 Arduino for ESP8266 implementation of Homie]
 +
*[https://github.com/esp8266/Arduino Arduino core for ESP8266]
 +
*[http://esp8266.ru/esplorer/ ESPLorer]
 
*[https://sites.google.com/site/terminalbpp/ Terminal] com port development tool
 
*[https://sites.google.com/site/terminalbpp/ Terminal] com port development tool
 
*[http://www.electrodragon.com/w/ESP8266 ESP8266] at Electrodragon
 
*[http://www.electrodragon.com/w/ESP8266 ESP8266] at Electrodragon
 +
*[https://cdn.sparkfun.com/assets/learn_tutorials/4/0/3/4A-ESP8266__AT_Instruction_Set__EN_v0.30.pdf Good command reference]
 +
*[http://signusx.com/esp8266-windows-compilation-tutorial/ Esp8266 – Windows compilation tutorial for n00bs]
 +
*[https://nurdspace.nl/ESP8266 NURDs ESP8255] Added 12/2/2015
 +
*[http://www.esp8266.com/ ESP8266 community forum] Added 12/2/2015
 +
===Arduino as serial terminal===
 +
 +
<source lang="text">
 +
/*
 +
jha 9/9/2015
 +
 +
eXperiment with Esp8266
 +
Use the arduino as a terminal to check / program the ESP8266
 +
found the soft serial code here: https://www.arduino.cc/en/Tutorial/SoftwareSerialExample
 +
 +
"Works on my machine"
 +
 +
*/
 +
 +
#include <SoftwareSerial.h>
 +
 +
SoftwareSerial mySerial(10, 11); // RX, TX
 +
 +
void setup() {
 +
 +
  Serial.begin(115200);
 +
  mySerial.begin(115200); // the ESP8266 I bough on Amazon defaulted to 115,200 baud rate.
 +
 +
}
 +
 +
// the loop function runs over and over again forever
 +
void loop() {
 +
 
 +
  if (mySerial.available()) {
 +
    Serial.write(mySerial.read());
 +
  }
 +
  if (Serial.available()) {
 +
    mySerial.write(Serial.read());
 +
  }
 +
}
 +
</source>
 +
 +
===Change and save default baud rate===
 +
I want to lower the baud rate because the arduino doesn't keep up with 115200 in the soft serial. I tried to issue the command "AT+UART_DEF=9600,8,1,0,0" to change and '''SAVE''' the baud rate but couldn't due to the unreliability of the soft serial at that speed. I was able to change the current baud rate (a shorter string) with "AT+CIOBAUD=9600" Then change baud rate for mySerial in the code, and then write with: "AT+UART_DEF=9600,8,1,0,0" Don't disturb the power while doing this. Then check by disconnecting power and restarting with the terminal set to 9600.
 +
 +
===Find some SSIDs===
 +
<source lang="text">
 +
ready
 +
AT
 +
 +
 +
OK
 +
AT+CWMODE=3
 +
 +
 +
OK
 +
AT+CWLAP
 +
 +
+CWLAP:(4,"ADP",-39,"b4:75:0e:60:c2:3a",6)
 +
+CWLAP:(4,"ADP_EXT_Desk",-57,"e6:f4:c6:d7:84:00",6)
 +
+CWLAP:(3,"WindyCity",-90,"a4:2b:8c:8f:31:f6",7)
 +
+CWLAP:(3,"Myrcenary",-82,"24:a2:e1:f1:99:1a",11)
 +
+CWLAP:(4,"CenturyLink2902",-81,"20:76:00:5a:eb:d5",11)
 +
 +
OK
 +
</source>
 +
 +
=Home Assistant=
 +
[[File:Soft and Hard Switches.jpg|600px]]
 +
* RF Key fob push button
 +
* RF push buttons
 +
* Stream Deck
 +
* Home Assistant web interface
 +
 +
=Sonoff / Tasmota=
 +
<syntaxhighlight lang="bash">
 +
mosquitto_pub -t cmnd/sonoff/ipaddress -m ''
 +
</syntaxhighlight>
 +
 +
==Flash esp-01==
 +
[[File:Esp-01 Programming Jig.jpg|600px]]
 +
===esptool.py===
 +
<syntaxhighlight lang="bash">
 +
esptool.py --port COM21 flash_id
 +
esptool.py --port COM21 erase_flash
 +
esptool.py --port COM21 write_flash 0x1000 .\sonoff.bin
 +
esptool.py --port COM21 write_flash -fs 1MB -fm dout 0x0 sonoff-classic.bin
 +
</syntaxhighlight>
 +
 +
 +
[[Category:Tasmota]]
 +
[[Category:Homeassistant]]
 +
[[Category:HomeAmation]]
 +
[[Category:IoT]]
 +
[[Category:diy]]

Latest revision as of 09:20, 24 July 2021

ESP8266

My ESP8266 adventures history

  • 14 July 2016 - Ohh snap! Discovered homie arduino / MQTT goodness for ESP8266. Implemented mqttwarn to rewrite topics
  • 12 July 2016 - Began working with Nodemcu using esplorer
  • 19 September 2015 connected a ESP8266-01 to an arduino as a serial terminal.

Resources

Arduino as serial terminal

/*
jha 9/9/2015

eXperiment with Esp8266
Use the arduino as a terminal to check / program the ESP8266
found the soft serial code here: https://www.arduino.cc/en/Tutorial/SoftwareSerialExample

"Works on my machine"

*/

#include <SoftwareSerial.h>

SoftwareSerial mySerial(10, 11); // RX, TX

void setup() {

  Serial.begin(115200);
  mySerial.begin(115200); // the ESP8266 I bough on Amazon defaulted to 115,200 baud rate.

}

// the loop function runs over and over again forever
void loop() {
  
   if (mySerial.available()) {
    Serial.write(mySerial.read());
  }
  if (Serial.available()) {
    mySerial.write(Serial.read());
  }
}

Change and save default baud rate

I want to lower the baud rate because the arduino doesn't keep up with 115200 in the soft serial. I tried to issue the command "AT+UART_DEF=9600,8,1,0,0" to change and SAVE the baud rate but couldn't due to the unreliability of the soft serial at that speed. I was able to change the current baud rate (a shorter string) with "AT+CIOBAUD=9600" Then change baud rate for mySerial in the code, and then write with: "AT+UART_DEF=9600,8,1,0,0" Don't disturb the power while doing this. Then check by disconnecting power and restarting with the terminal set to 9600.

Find some SSIDs

ready
AT


OK
AT+CWMODE=3


OK
AT+CWLAP

+CWLAP:(4,"ADP",-39,"b4:75:0e:60:c2:3a",6)
+CWLAP:(4,"ADP_EXT_Desk",-57,"e6:f4:c6:d7:84:00",6)
+CWLAP:(3,"WindyCity",-90,"a4:2b:8c:8f:31:f6",7)
+CWLAP:(3,"Myrcenary",-82,"24:a2:e1:f1:99:1a",11)
+CWLAP:(4,"CenturyLink2902",-81,"20:76:00:5a:eb:d5",11)

OK

Home Assistant

Soft and Hard Switches.jpg

  • RF Key fob push button
  • RF push buttons
  • Stream Deck
  • Home Assistant web interface

Sonoff / Tasmota

 mosquitto_pub -t cmnd/sonoff/ipaddress -m ''

Flash esp-01

Esp-01 Programming Jig.jpg

esptool.py

esptool.py --port COM21 flash_id
esptool.py --port COM21 erase_flash
esptool.py --port COM21 write_flash 0x1000 .\sonoff.bin
esptool.py --port COM21 write_flash -fs 1MB -fm dout 0x0 sonoff-classic.bin
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