I'm trying to add battery monitoring to my ESP32 project. If I use the map function it works other than I get an integer value. To get a floating value I installed the Mapf.h library, but when I compile the sketch I get the error that mapf was not declared in this scope. I then opened the "ADC_Readi…

This is a snippet from your code: #ifdef ESP8266 #include <ESP8266WiFi.h> #include <Mapf.h> #else #include <WiFi.h> #endif This piece of code will only include "Mapf.h" on ESP8266 and since you use an ESP32, that's probably your problem.

Example sketch included the header unconditionally, but your sketch includes it on condition, why did you add this distinction?

@J-M-L I will get the error later today when I get back home but pretty much all it says is that mapF was not declared in this scope, I'll send the error tonight. @Danois90 , good point. I see that the example doesn't have those references to ESP8266. Prior to adding the mapf line my sketch complied…

[image] Stumpy_L: I will get the error later today when I get back home OK no need really. I think @Danois90 nailed it just go for: #ifdef ESP8266 #include <ESP8266WiFi.h> #else #include <WiFi.h> #endif #include <Mapf.h>

Hello You can use this function template instead of the inclusion of a unknown function. template<typename T> T map(T x, T in_min, T in_max, T out_min, T out_max) { return (x - in_min) * (out_max - out_min) / (in_max - in_min) + out_min; } Have a nice day and enjoy coding in C++.

that's what's in the library : double mapf(double x, double in_min, double in_max, double out_min, double out_max) { return (x - in_min) * (out_max - out_min) / (in_max - in_min) + out_min; } double mapf_ADC(double value,double out_min,double out_max,unsigned char input_bit_resolution) { double…

I build my programs a step at a time, ultimately this will be a battery powered remote monitor in my greenhouse. I'm reading a BME280 for temperature, humidity and pressure. The ESP32 sends the readings to a Mega with a display back to my house as well as I connect to my Wifi network and display the…

That fixed it and that was sloppy of me to put the #include <Mapf.h> inside of the ifdef ESP8266 statement. I had looked at that a dozen times to check that the include was there but didn't see where I had put it. That's why some times you need a fresh set of eyes to look at something. I actually di…

[image] Stumpy_L: It aggravates me when I make stupid mistakes. See it the positive way : the more you feel bad the less likely you will do it again :slight_smile: (And we all have done and keep doing simple mistakes)

mapF function not compiling

Projects Programming

J-M-L February 2, 2022, 10:09am 2

what's the exact error the compiler throws at you? (copy & paste it here using code tags)

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mapF function not compiling

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