ESP8266 12-E NodeMCU "Send to Espruino" doesn't seem to work

[espruino-discuss]

Posted at 2017-11-29 by MortenMoulder

I am trying to just get something to work using my ESP8266 NodeMCU. I purchased one of these but I simply can't get it to work.

I downloaded the 1v94 from the top of this page and extracted it to a folder. Then I ran this command:

esptool --port COM4 --baud 115200 write_flash --flash_freq 80m --flash_mode qio --flash_size 4MB 0x0000 "boot_v1.6.bin" 0x1000 espruino_esp8266_user1.bin 0x3FC000 esp_init_data_default.bin 0x3FE000 blank.bin

and after flashing, I run the esptool --port COM4 flash_id command, which returns:

esptool.py v2.2
Connecting....
Detecting chip type... ESP8266
Chip is ESP8266EX
Uploading stub...
Running stub...
Stub running...
Manufacturer: e0
Device: 4016
Detected flash size: 4MB
Hard resetting...

But when I try to run some simple code like:

var isOn = false;
var interval = 500;
function main() {
    setInterval(function () {
        isOn = !isOn;
        digitalWrite(D2, isOn);
    }, interval);
}
main();

it just won't do anything. My console says:

Found a prompt... great!
>>> Sending...
---> "\u0010reset();\n\u0010var isOn = false;\n\u0010var interval = 500;\n\u0010function main() {\u001b\n    setInterval(function () {\u001b\n        isOn = !isOn;\u001b\n        digitalWrite(D2, isOn);\u001b\n    }, interval);\u001b\n}\n\u0010main();\n\n"
Splitting at "reset();\n", delay 250
>>> Sent

but nothing appears to be blinking. When I try the WiFi example code:

var wifi = require("Wifi");

function onConnect(err) {
    if(err) {
        console.log("An error has occured :( ", err.message);
    } else {
        console.log("Connected with IP : ", wifi.getIP().ip);
    }
}

wifi.connect("SSID", { password: "PASSWORD" }, onConnect);

It gives me a Module Wifi not found and the console says:

loadModule(Wifi)
ERROR: getURL("https://www.espruino.com/modules/Wifi.min.js") error : Not Found
ERROR: getURL("https://www.espruino.com/modules/Wifi.js") error : Not Found
WARNING: [notify_warn] Module Wifi not found
Found a prompt... great!
>>> Sending...
---> "\u0010reset();\n\u0010Modules.removeAllCached();\n\u0010var wifi = require(\"Wifi\");\n\u0010function onConnect(err) {\u001b\n    if(err) {\u001b\n        console.log(\"An error has occured :( \", err.message);\u001b\n    } else {\u001b\n        console.log(\"Connected with IP : \", wifi.getIP().ip);\u001b\n    }\u001b\n}\n\u0010wifi.connect(\"SSID\", { password: \"PASSWORD\" }, onConnect);\n\n"
Splitting at "reset();\n", delay 250
>>> Sent

What am I doing wrong here?

[espruino-discuss]

Posted at 2017-11-29 by @gfwilliams

Did you set the baud rate in the IDE to 115200?

---

Posted at 2017-11-29 by MortenMoulder

Yes

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Posted at 2017-11-29 by MortenMoulder

FIXED!

I flashed the espruino_1v94_esp8266_4mb_combined_4096.bin firmware instead. I simply did:

esptool --port COM4 --baud 115200 write_blash --verify --flash_freq 80m --flash_mode dio --flash_size 32m 0x0000 espruino_1v94_esp8266_4mb_combined_4096.bin

Could probably be shortened a bit, but it works now!

Wifi also works now :-)