How to read two I2C (Having Same Address) sensors using NRF52840

[Khalil Ahmad]

Hi All,

I have a custom board where I have connected Two Sensors MAX86916 to the 0.26 and 0.27 pins of NRF52840. When I tried to scan it only shows one address 0x57. I want to use both sensors. 

To counter check my setup I use NRF52840 SDK and connected two different sensors and then scanned it show both sensors address separately.

My question is how can I get the data of both sensors even at the same time or different time. My intention is to get the sensor data of both sensors. Can I get the data of both sensors from single address ???? If not, what are the possible solution to get the data of both sensors even by software or hardware modifications.

 

[Turbo J]

Bad idea. These require quite a bit of bus bandwidth in order to read all the FIFO data.

Use a set of pins for each sensor, the NRF52840 has two TWIM uinits. That allows you to read the data in parallel.