How to change the data type from integer to floating point so i can read floating ponit voltages on copper coap?

[Liverpool007]

I have an iot/coap environment setup and i want to read input voltage connected to p0.01.I can read the input in terms of resolution(0-1023).I can convert this values to voltage(0-3).I want to read voltage in terms of floating point(1.0-3.3).How can i change the data type from int to float? I converted the input to voltage using formula in the image adc_buffer[0]=adc_buffer[0]*3.3/1023. I am using the code from this link devzone.nordicsemi.com/.../

[Jørgen Holmefjord]

You should store the result in a new variable of type float. adc_buffer is of type nrf_adc_value_t, which is a typedef of int16_t.

[Liverpool007]

If i use float in that function i get error code size to big for linker while compiling. Error L6050U:.

[Jørgen Holmefjord]

Then you need to buy a Keil license, or switch to a compiler/IDE that does not have the code size limit. Examples are to use GCC with the Makefiles we provide, which can also be used together with Eclipse, or Segger Embedded Studio.