[Renzo Mischianti]

Hi Orvasson,
I had lost your message (I need a moderator).

But what Paloy said is correct, you can connect various i2c devices and communicate with them via the device address.

Some devices have the address configurable through pins such as the various pcf8574 pcf8591 etc ..

PCF8574 i2c digital I/O expander

other can be programmed via code, other have fixed address.

You can check the address of the devices connected with a simple program like this:

/*
 * i2c scanner
 * Renzo Mischianti www.mischianti.org
 */
#include <Wire.h>

void setup() {
  Wire.begin();
  Serial.begin(115200);
  while (!Serial) {delay(100);};
  Serial.println();
  Serial.println("I2C Scanner");
}

void loop() {
  byte error, address;
  int nDevices;
  Serial.println("Scanning...");
  nDevices = 0;
  for(address = 1; address < 127; address++ ) {
    Wire.beginTransmission(address);
    error = Wire.endTransmission();
    if (error == 0) {
      Serial.print("I2C device found at address 0x");
      if (address<16) {
        Serial.print("0");
      }
      Serial.println(address,HEX);
      nDevices++;
    }
    else if (error==4) {
      Serial.print("Unknow error at address 0x");
      if (address<16) {
        Serial.print("0");
      }
      Serial.println(address,HEX);
    }
  }
  if (nDevices == 0) {
    Serial.println("No I2C devices found\n");
  }
  else {
    Serial.println("done\n");
  }
  delay(5000);
}

Bye Renzo

[Renzo Mischianti]

Hi Joergen,
sorry to write so late, I add support for LittleFS in this versione of EMailSender
Send email with attachments (EMailSender v2.x library): esp32 and esp8266 – 2

And also update a library of FTP Server to support LittleFS.
FTP server on esp8266 and esp32

Bye Renzo

[Renzo Mischianti]

Hi makac,
It’s very difficult to debug without a device.
I try to ask to the Ashining some send me some devices to adapt the library.
Bye Renzo

[Renzo Mischianti]

Hi Orvasson,

the SPI protocol pins are

static const uint8_t SS = 34;
static const uint8_t MOSI = 35;
static const uint8_t MISO = 37;
static const uint8_t SCK = 36;

from 34 to 37.

The pin 46 is a simple pin but can’t used for output for some HW limitation, you can use It only in digital input.

Bye Renzo

[Renzo Mischianti]

Hi Asterios,
I add some trick and a simple program to calculate step on this article.
If you have difficult write here I try to help you.

CNC Cyclone PCB Factory: settings and tests – Part 7

Bye Renzo

[Renzo Mischianti]

Hi Sergio,
Thanks, I fixed It.
Bye Renzo

[Renzo Mischianti]

When you give me the account I try to send email with EMailSender and an esp8266, and It work correclty

 

the library It’s ok, the problem is the provider.

Bye Renzo

[Renzo Mischianti]

Hi Gilles,

I send email without problem from GMail with esp8266 to orange.fr account, the problem is that Orange block the other provider.

So you must contact your  provider and try to unlock sendgrid, or they must suggest you an unencrypted service like send grid.

Bye Renzo

[Renzo Mischianti]

Hi Gilles,

you can try 25, 2525, or 587 port for unencrypted connection, if you can’t use this ports mean that in your network these ports are blocked and you can’t use that.

Bye Renzo

Hi Gilles,

you can try 25, 2525, or 587 port for unencrypted connection, if you can’t use this ports mean that in your network these ports are blocked and you can’t use that.

Bye Renzo

[Renzo Mischianti]

Hi Gilles,

you can try 25, 2525, or 587 port for unencrypted connection, if you can’t use this ports mean that in your network these ports are blocked and you can’t use that.

Bye Renzo

[Renzo Mischianti]

Try to do

ping smtp.sendgrid.net

 

Esecuzione di Ping smtp.sendgrid.net [18.197.194.208] con 32 byte di dati:

 

and check if you can read the IP.

Bye Renzo

[Renzo Mischianti]

Hi Gilles,

refer to the topic of tpapas, that He use the service currently for his weather station.

Using EMail Sender library with Arduino UNO Ethernet shield with Ethernet.h library

 

I try with telnet and the result is

C:\Users\renzo>bash
reef@PORTATIREEF:/mnt/c/Users/renzo$ telnet smtp.sendgrid.net 25
Trying 18.197.194.208...
Connected to smtp.sendgrid.net.
Escape character is '^]'.
220 SG ESMTP service ready at geopod-ismtpd-4-0

 

 
Bye Renzo

[Renzo Mischianti]

Hi,

Return-Path: <>  is set by MAIL FROM: parameter, but is set by the SMTP server.

It’s strange that is empty.

Bye Renzo

[Renzo Mischianti]

Yes the library convert in base 64, but the code you posted use smtp from orange not sendgrid.

Bye Renzo

[Renzo Mischianti]

I don’t have w5500, i’m going to order one of that to do some test.

Theorically it can support secure connection, but i think some test is needed.

 

Bye Renzo

[Author]

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