Changing address of the AS1115

Hardware
1

Based on the AS1115 class it appears the hex address can be changed, however, I’m not having any luck getting two displays working independently. Is my assumption correct, or am I not able to change the address via software?

From the header file:
SELF_ADDRESSING = 0x2D, ///< Uses 2 of the 16 keys to change the device’s address.

And the init code from the cpp file:

void AS1115::init(uint8_t digits, uint8_t intensity)
{
_digits = digits;

Wire.beginTransmission(0x00);
Wire.write(SHUTDOWN);
Wire.write(NORMAL_OPERATION | RESET_FEATURE);
Wire.endTransmission();

**if(_deviceAddr != 0x00) {**

** Wire.beginTransmission(0x00);**
** Wire.write(SELF_ADDRESSING);**
** Wire.write(1);**
** Wire.endTransmission();**
** }**

writeRegister(DECODE_MODE, 0x00);
writeRegister(SCAN_LIMIT, digits - 1);
setIntensity(intensity);

}

2

this is a bit difficult to use IC. i tried to change address a while back but never got it working. MUX is way to go in this case.

3

Yea, no luck for me either. I had to use the mux, but now it’s working. I have multiple thermocouples, each thermocouple has its own AS1115 display, and it’s all working as expected.

I can start a new thread and post the code if that’s something that would be helpful.

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