Adding a second ADS1115

Navio / Edge Hardware
1

I’m looking to add a second ADS1115 to Navio (Adafruit breakout board) and was wondering how to do this in software. I’m assuming I can use the same library as the one for the onboard chip. Looking at the ADS1115.h, I see where it lists the possible addresses and where it assigns it

ADS1115(uint8_t address = ADS1115_DEFAULT_ADDRESS);

When I create an instance of the ADS1115 class, is there a way to specify the address? Perhaps something like

ADS1115 adc;
ADS1115(addr2) adc2;

Also just to double check, is VDD for the onboard ADS1115 3.3V or 5V? Are that any filter capacitors for A0,1,2,3 already on the Navio?

2

Your code looks correct.

VDD for onboard ADS1115 is 3.3V, no filter capacitors, only current limiting resistors.

3

I tried the code listed in my previous post and it gives the following errors when I add it to the example code ADC code.

ADC.cpp: In function ‘int main()’:
ADC.cpp:24:19: error: expected ‘;’ before ‘adc2’
ADC.cpp:29:5: error: ‘adc2’ was not declared in this scope
4

Here’s the correct syntax:

ADS1115 adc2(addr2);
5

Whoops, shame on me :see_no_evil: