ESP8266 Community Forum

- Wed Mar 23, 2016 7:08 pm #43905 Hello,

I am presently using one of the "nodemcu-master-14-modules-2016-02-25-04-41-19-float" firmware. I am unable to perform the atan() operation. It comes back with the error of "attempt to call field 'atan' (a nil value)"

My research on the internet points towards the error of it being a firmware issue. Does anybody has any recommendation?

~Ansh Verma

May the "Force" be with your ESP8266.

- Thu Mar 24, 2016 2:49 pm #43970 try atanf

- Thu Mar 24, 2016 7:04 pm #43980

try atanf

I tried using this but doesn't work. As a matter of act non of the trigonometric operations work. All of the other mathematics operations (math.abs,sqrt etc) are doing perfect.

May the "Force" be with your ESP8266.

- Tue Mar 29, 2016 8:12 pm #44282 Look at the math lib in the github firmware repository. You will see that all of the trig functions have been removed for space reasons

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