TSL2591 for Electric Imp

[forrest_m]

I want to use my TSL2591s with an Electric Imp. Luckily Electric Imp has a guide showing how to use the TSL2561 here: https://electricimp.com/docs/resources/i2c/

Unluckily, it seems that the hardware or libraries are sufficiently different to not want to simply run their example code as is. I did change the

const TSL2561_ADDR_FLOAT = 0x39; // ADDR pin floating

to Ox29 because I know the 91 has a fixed i2c address at 0x29.

It seems like the problem is that the 61 has

const TSL2561_REGISTER_TIMING = "\x81"; // Access timing register
const TSL2561_REGISTER_ADC0_LSB = "\xAC"; // LSB of sensor's two-byte ADC value
const TSL2561_REGISTER_ADC1_LSB = "\xAE"; // MSB of sensor's two-byte ADC value

in its library, but the 91 seems to do things differently. Does anyone have thoughts on how I can get this example to work with the 91?

[adafruit_support_mike]

The part numbers are similar, but the control interfaces are different. A TSL2561 library won't give you any help running a TSL2591.

Your best bet will be to use the Adafruit TSL2591 library as a working design reference: https://github.com/adafruit/Adafruit_TSL2591_Library