PCA10056 and float

RE: PCA10056 and float

awneil — Thu, 25 Jul 2019 12:11:17 GMT

Yes, you need extra support for printing floats.

You will have to consult the SES documentation for details; it's a general thing - not specific to Nordic.

The chip itself is a Cortex-M4F - with the floating point unit (FPU) - so it does support floating-point operations.

But printing FP values is a library issue.

eg, see:

https://devzone.nordicsemi.com/f/nordic-q-a/18625/nrf_log_info-does-not-show-float-number

Also:

devzone.nordicsemi.com/.../200784

RE: PCA10056 and float

lydie — Thu, 25 Jul 2019 11:50:31 GMT

Hi, thanks for your response.

I just try to print a float like this :

float a = -1,9791;

printf(“a: %f”, a);

when i run, there is just a blank. So I don’t know if I need to setting parameters in SEGGER embedded or if it’s my device which cannot support float.

RE: PCA10056 and float

awneil — Thu, 25 Jul 2019 11:33:58 GMT

[quote userid="81455" url="~/f/nordic-q-a/50243/pca10056-and-float"]it doesn't work[/quote]

What, exactly, "doesn't work"? and in what way(s),exactly, does it "not work"?

What have you tried?

What results were you expecting?

What results are you actually getting?

What have you done to verify your initial expectations?

What investigation / testing / debugging have you done to find what's happening?