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Dobrica Pavlinušić's random unstructured stuff
ESP8266: Revision 46
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^ links * http://www.esp8266.com/ * https://github.com/esp8266/esp8266-wiki/wiki * http://www.electrodragon.com/w/Wi07c * https://nurdspace.nl/ESP8266 * Documentation, tools, firmwares https://onedrive.live.com/?cid=C4DDF72E6EEA3826&id=C4DDF72E6EEA3826%21631 * https://github.com/esp8266/arduino * https://github.com/igrr/esptool-ck (with reset support) * http://tim.jagenberg.info/2015/01/18/low-power-esp8266/ {image: module_v2.png} * all IO is 3.3V (3.6V max) * CH_PD i chip-enable and has to be connected to VCC (3.3V) * RST, GPIO0, GPIO2 should be pulled up to VCC for normal operation (GPIO0 at minumum!) * GPIO0 pull to ground for firmware update * make sure that 3.3V VCC power supply can support 300-400mA or there *WILL* be problems! ^ serial port baud rate 115200 .pre AT+GMR 00160901 OK AT+RST OK ets Jan 8 2013,rst cause:4, boot mode:(3,7) wdt reset load 0x40100000, len 24444, room 16 tail 12 chksum 0xe0 ho 0 tail 12 room 4 load 0x3ffe8000, len 3168, room 12 tail 4 chksum 0x93 load 0x3ffe8c60, len 4956, room 4 tail 8 chksum 0xbd csum 0xbd ready .pre ^ ESP-201 http://www.banggood.com/ESP8266-ESP-201-Remote-Serial-Port-WIFI-Transceiver-Wireless-Module-p-964288.html {image: ESP8266-ESP-201-pin-reference-v01.png} from http://smarpl.com/content/esp8266-esp-201-module-first-impressions * http://jas-hacks.blogspot.com/2015/04/iot-esp8266-esp-201-cc1110-xrf.html > One quirk with the ESP-201 is that is IO15 has to be grounded for the device to function. To flash the device IO00 has to be grounded. .pre AT+RST OK ets Jan 8 2013,rst cause:4, boot mode:(3,7) wdt reset load 0x40100000, len 212, room 16 tail 4 chksum 0x5e load 0x3ffe8000, len 788, room 4 tail 0 chksum 0x1c load 0x3ffe8314, len 72, room 8 tail 0 chksum 0x55 csum 0x55 jump to user1 .pre modify flash for dio instead of qio: http://smarpl.com/content/esp8266-esp-201-module-freeing-gpio9-and-gpio10 ^ nodemcu * https://github.com/nodemcu/nodemcu-firmware * https://github.com/nodemcu/nodemcu-firmware/wiki/nodemcu_api_en ^^ esptool.py .pre dpavlin@x200:/rest/cvs/esptool$ git remote -v origin https://github.com/themadinventor/esptool (fetch) origin https://github.com/themadinventor/esptool (push) dpavlin@x200:/rest/cvs/esptool$ ./esptool.py --port /dev/ttyUSB2 read_mac Connecting... MAC: 18:fe:34:a0:38:72 .pre ^^ flash firmware .pre dpavlin@blue:/opt/Espressif/esptool$ ./esptool.py read_mac Connecting... MAC: 18:fe:34:a0:38:72 dpavlin@blue:/opt/Espressif/esptool$ ./esptool.py --port /dev/ttyUSB0 write_flash 0x00000 ../nodemcu-firmware/pre_build/latest/nodemcu_latest.bin Connecting... Erasing flash... Writing at 0x00010800... (17 %) .pre Get latest build from https://github.com/nodemcu/nodemcu-firmware/releases .pre dpavlin@x200:/rest/cvs/esptool$ ./esptool.py --port /dev/ttyUSB2 write_flash 0x00000 ./nodemcu_float_0.9.6-dev_20150406.bin dpavlin@x200:/rest/cvs/esptool$ microcom -p /dev/ttyUSB2 -s 9600 connected to /dev/ttyUSB2 Escape character: Ctrl-\ Type the escape character followed by c to get to the menu or q to quit > node.restart() NodeMCU 0.9.6 build 20150406 powered by Lua 5.1.4 lua: cannot open init.lua > .pre ^^ build from source For latest features, you might want to rebuild software from github source .pre dpavlin@x200:/rest/cvs$ git clone https://github.com/pfalcon/esp-open-sdk.git dpavlin@x200:/rest/cvs/esp-open-sdk$ export PATH=/rest/cvs/esp-open-sdk/xtensa-lx106-elf/bin:$PATH git clone https://github.com/nodemcu/nodemcu-firmware.git cd nodemcu-firmware dpavlin@x200:/rest/cvs/nodemcu-firmware$ git checkout -b dev origin/dev Branch dev set up to track remote branch dev from origin. Switched to a new branch 'dev' make # check that device is in boot loader mode dpavlin@x200:/rest/cvs/nodemcu-firmware$ ../esptool/esptool.py --port /dev/ttyUSB1 read_mac Connecting... MAC: 18:fe:34:99:f2:83 # flash new firmware dpavlin@x200:/rest/cvs/nodemcu-firmware$ make flash ESPPORT=/dev/ttyUSB1 make -C ./app flash make[1]: Entering directory '/rest/cvs/nodemcu-firmware/app' ../tools/esptool.py --port /dev/ttyUSB1 write_flash 0x00000 ../bin/0x00000.bin 0x10000 ../bin/0x10000.bin Connecting... Erasing flash... Writing at 0x0000c500... (100 %) Erasing flash... Writing at 0x00068c00... (100 %) Leaving... make[1]: Leaving directory '/rest/cvs/nodemcu-firmware/app' .pre ^^ A library for the Microchip MCP3021 A/D converter for use with the ESP8266. https://github.com/AllAboutEE/ESP8266-MCP3021-Library ^ nodemcu-uploader .pre dpavlin@x200:/rest/cvs$ git clone https://github.com/kmpm/nodemcu-uploader dpavlin@x200:/rest/cvs/nodemcu-uploader$ ./nodemcu-uploader.py --port /dev/ttyUSB2 --baud 9600 file list Listing files for key,value in pairs(file.list()) do print(key,value) end > .pre ^ OpenOCD JTAG https://github.com/projectgus/openocd http://www.esp8266.com/viewtopic.php?f=9&t=1871#p11157 .pre JTAG Signal -> ESP8266 GPIO Pin -> JTAG Pin (standard 20 pin connector) TMS -> 14 -> 7 TDI -> 12 -> 5 TCK -> 13 -> 9 TDO -> 15 -> 13 RST -> RST -> 15 .pre ^ ESP8266 as wireless JTAG Programmer https://github.com/emard/wifi_jtag ^ WIFI * https://github.com/kripthor/WiFiBeaconJam ^ software serial * C library https://github.com/plieningerweb/esp8266-software-uart * Arduino https://github.com/plerup/espsoftwareserial ^ Sonoff https://www.itead.cc/sonoff-wifi-wireless-switch.html http://wiki.iteadstudio.com/Sonoff https://github.com/arendst/Sonoff-MQTT-OTA ^^ pinout My sonoff is early model, with just 4 pins (instead of 5) 1 - VCC 2 - RX 3 - TX 4 - GND ^ Programming * https://tech.scargill.net/a-flashing-esp-chips-surprise/ use *dio* not *qio* to fix checksum errors ^^ CH340 USB to ESP8266 ESP-01 Wifi Module Adapter It doesn't have GPIO0 connected to ground, so flashing doesn't work! http://www.esp8266.com/wiki/doku.php?id=all-in-one-esp-usb-converter ^ ESP-01S DHT11 board * https://github.com/IOT-MCU/ESP-01S-DHT11-v1.0 .pre #define DHTTYPE DHT11 #define DHTPIN 2 DHT dht(DHTPIN, DHTTYPE, 11); .pre ^^ adding IR led Button is connected to RST, and if you want to add IR led (with transistor and resistor) it seems that only way to make it work is to connect it to RX pin (gpio3). For more info see my blog post: https://blog.rot13.org/2019/08/emulate-ir-remote-for-tv-or-hvac-from-command-line-using-tasmota.html |