calibrating sensor values

[ps_anu]

hi..

i am using nrf52832 and a peripheral device .. temperature sensor ,my temperature values are increasing like(0 ,27,75,80...) how to get a approximate value .

i have referred the datasheet ,but i dono how to solve ?

suggest an idea

[awneil]

ps_anu said:

give me some idea

Use the debugger to step through your code, and see what is happening.

Use an oscilloscope or analyser on I2C signals to verify what is actually happening on the hardware interface.

Check the sensor documentation to check if this is expected behaviour - eg, does it tell you that it takes a few readings to "settle" ... ?

Again, for specific questions about the max30205 itself and its operation you need to contact Maxim for support - it is not a Nordic product.

[ps_anu]

thankyou

[awneil]

awneil said:

Use an oscilloscope or analyser

See this post (it's about SPI, but applies equally to I2C) for some more suggestions:

https://devzone.nordicsemi.com/f/nordic-q-a/41804/unable-to-read-sensor-data-using-spi-communication-_nrf52840/162690#162690

I2C (aka "TWI") equivalent of the SPIdriver mentioned in that thread:

https://www.crowdsupply.com/excamera/i2cdriver