Limitation of I2C

Projects Networking, Protocols, and Devices
1

I already post, but wrong forum so I decide to post it again

I try to send String "https://www.teksol-enterprise.com/smartlocker/view/#/locker/box/list/6804" from I2C master to the slave one, but the slave receive only "https://www.teksol-enterprise". I don't know, is it reach to the limit in one transmission or not.

Please help me, thank you

2

Wire.beginTransmission(0x71); // transmit to device #0x71
Wire.write(0x02);
Wire.write(0x23);
Wire.write(z);
Serial.println(z);
Wire.write("https://www.teksol-enterprise.com/smartlocker/view/#/locker/box/list/6804");
Wire.write(0x03);
Wire.endTransmission();

here is the code from master and 'z' is size of the string and I set it in setup function

3

In one transmission of I2C Bus -- between START and STOP, you can send only 32 bytes data. If you want more, you need to change the buffer size in the Library File.

Here is your 32-byte:

Wire.write(0x02);  (1)       
Wire.write(0x23); (1)
Wire.write(z);       (1)
Wire.write("https://www.teksol-enterprise"); (29) //not sent 
.com/smartlocker/view/#/locker/box/list/6804");
Wire.write(0x03);                                              //not sent
4

Thank you so much!!!
it works now