user70656

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• NodeMCU and SIM800L

  @user70656 started

  • 14 comments
  • 27,825 views

  @Gordon replied
• ESP32 devkitC spi problem with microsd card reader

  @user70656 started

  • 4 comments
  • 4,179 views

  @user70656 replied
• ESP32 devkitC spi problem with microsd card reader

  in ESP32 • 7 years, 6 months

  

  Ok... i just realized that i can't require on the left side of the espruino IDE... that was the problem...
  but i still get an error sometimes and sometimes not on trying to make this rfid work:

  ERROR: jshI2CRead:, slave doesn't ACK the transfer.
  NFC error undefined
  

• ESP32 devkitC spi problem with microsd card reader

  in ESP32 • 7 years, 6 months

  

  So now i'm using 1mb and formatted it... but what i get now is that doesn't find any library from modules folder in project directory and even other libraries that should be present already in the firmware... the error i get is:

  var nfc = require("PN532").connect(I2C1);
  WARNING: Module "PN532" not found
  Uncaught Error: Unable to mount media : NO_FILESYSTEM
   at line 1 col 26
  var nfc = require("PN532").connect(I2C1);
  

  then i format with:

  E.flashFatFS({format:true});
  

  and what i get is:

  WARNING: Module "PN532" not found
  Uncaught Error: Could not open file : NO_PATH
   at line 1 col 30
  var mqtt = require("PN532").create(server, {
  

  what is it happening??

• ESP32 devkitC spi problem with microsd card reader

  in ESP32 • 7 years, 6 months

  

  Hi,
  i got this problem with microsd card reader ... when putting this simple code:

  SPI1.setup({mosi:D23, miso:D19, sck:D18});  
  E.connectSDCard(SPI1, D5); 
  console.log(require("fs").readdirSync());
  

  i get:

  Uncaught Error: Unimplemented on Linux
   at line 1 col 25
  E.connectSDCard(SPI1, D5);
                          ^
  Uncaught Error: Unable to mount media : NO_FILESYSTEM
   at line 1 col 39
  console.log(require("fs").readdirSync());
                                        
  =undefined
  

  i followed this schema:
  https://farm4.staticflickr.com/3954/33675026246_a5bb2ce4c6_o.jpg

  then i followed this schema:
  http://www.espruino.com/File+IO

  i tried with fat32 filesystem, i tried with ext3

  i tried changing pins to free pins ... with software spi
  nothing... at all
  always same error

  please someone help me

• ESP8266 A6 gsm/gprs module

  @user70656 started

  • 2 comments
  • 2,991 views

  @Gordon replied
• ESP8266 A6 gsm/gprs module

  in ESP8266 • 8 years

  

  Has anyone implemented a library for A6 chip?

• NodeMCU and SIM800L

  in ESP8266 • 8 years

  

  Can someone help me understand how to implement SIM800L on NodeMCU 1.0?!
  I connected:

  • pin rx from sim800 to tx of NodeMCU,
    
  • pin tx from sim800 to rx of NodeMCU,
    
  • vcc from sim800 to 3.3v of NodeMCU,
    
  • gnd from sim800 to gnd of NodeMCU,
    
  • rst from sim800 to D5 of NodeMCU
    
    

  Then i got this code:

  var wifi = require('Wifi');
  var esp = require('ESP8266');
  var sim = require('SIM900');
  
  wifi.connect("...........", {password:'...............'}, function(err) {
        if (err) throw err;
        console.log("Connected to wifi");
        console.log(wifi.getIP().ip);
  });
  
  var gprs = sim.connect(Serial1, D5, function(err) {
    if (err) throw err;
    gprs.connect('mobile.vodafone.it', '', '', function(err) {
      if (err) throw err;
      gprs.getIP(function(err, ip) {
        if (err) throw err;
        console.log('IP:' + ip);
        require("http").get("http://www.pur3.co.uk/hello.txt", function(res) {
          console.log("Response: ",res);
          res.on('data', function(d) {
            console.log("--->"+d);
          });
        });
      });
    });
  });
  

  I got console stopping to work.
  I even thought that as NodeMCU is connected to usb and maybe tx and rx of NodeMCU somehow conflict with usb then i changed on code "serial1" to serial2 or serial3 but nothing.
  Then as i thought about the conflict i connected and saved wifi so that i can connect to NodeMCU through wifi for IDE and then send serial connect on next reboot but nothing.
  Well ... can someone tell me how it works please?
  Thanks