You are here: start » boards » esp8266

Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Both sides previous revision Previous revision
Next revision 		Previous revision
boards:esp8266 [2019/07/07 09:34]
darron [Tasmota] 		boards:esp8266 [2023/12/15 07:52] (current)
darron [Espressif Systems ESP8266]
Line 1: Line 1:
-==== Espressif Systems ESP8266 ESP-XX ====+==== Espressif Systems ESP8266====
 <wrap right> <wrap right>
 {{:boards:esp8266-ch340.jpg?200}} {{:boards:esp8266-ch340.jpg?200}}
 </wrap> </wrap>
  
-The Espressif Systems ESP8266 is used in cheap WiFi modules. It embeds an Xtensa LX3 CPU. The ESP-XX boards come with at least 1/2 megabyte of SPI flash for program storage.+The Espressif Systems ESP8266 is used in cheap WiFi modules. It embeds an Xtensa LX3 CPU. ESP8266 boards named ESP-XX come with at least 1/2 megabyte of SPI flash for program storage.
  
 +Also see [[tools:tasmota|tasmota]] for various applications of this processor.
 === Pinout === === Pinout ===
  
Line 36: Line 37:
  
 The default AT firmware can be updated using [[:tools:esptool|ESPTool]]. The default AT firmware can be updated using [[:tools:esptool|ESPTool]].
 +
 +To program the chip, keep GPIO0 low and reset the device on EXT_RSTB.
  
 <code> <code>
-wget "http://wiki.kewl.org/downloads/v0.9.2.2 AT Firmware.bin"+wget "https://wiki.kewl.org/downloads/v0.9.2.2 AT Firmware.bin"
 esptool.py --port /dev/ttyUSB0 write_flash 0x000000 "v0.9.2.2 AT Firmware.bin" esptool.py --port /dev/ttyUSB0 write_flash 0x000000 "v0.9.2.2 AT Firmware.bin"
 Connecting... Connecting...
Line 141: Line 144:
 Although the ESP-01 only has 2 GPIOs, NodeMcu has I2C support and a circuit such as [[:projects:esp|this]] can extend its capabilities. Although the ESP-01 only has 2 GPIOs, NodeMcu has I2C support and a circuit such as [[:projects:esp|this]] can extend its capabilities.
  
-=== Tasmota === 
- 
-Tasmota is firmware providing support for various devices attached to an ESP8266. It has both and HTTP (web) and MQTT interface. 
- 
-It was primarily designed for SONOFF power switches but can be used with any device to give an MQTT enabled WIFI temperature monitor, for example. 
- 
-Here is an example seession for a SONOFF basic switch. 
- 
-Backup factory firmware. 
- 
-<code> 
-esptool.py --port /dev/ttyUSB0 read_flash 0x00000 0x100000 image1M.bin 
-</code> 
- 
-Write tasmota firmware. 
- 
-<code> 
-esptool.py --port /dev/ttyUSB0 write_flash -fs detect -fm dout 0x0 sonoff-basic.bin 
-</code> 
- 
-Now an example session with the D1 Mini Lite. 
- 
-Read MAC address. 
- 
-<code> 
-esptool.py -p /dev/ttyUSB0 read_mac 
- 
-esptool.py v2.6-beta1 
-Serial port /dev/ttyUSB0 
-Connecting.... 
-Detecting chip type... ESP8266 
-Chip is ESP8285 
-Features: WiFi, Embedded Flash 
-MAC: xx:xx:xx:xx:xx:xx 
-Uploading stub... 
-Running stub... 
-Stub running... 
-MAC: xx:xx:xx:xx:xx:xx 
-Hard resetting via RTS pin... 
-</code> 
 === Resources === === Resources ===
  
 [[http://www.nodemcu.com/index_en.html|NodeMcu home page]] [[http://www.nodemcu.com/index_en.html|NodeMcu home page]]