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How to convert float to string for UART transmission

APena7
Beginner
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I'm trying to send a floating point number (it's the ratio of two measurements the device makes) via UART to a terminal program (Termite). However, I understand that the printf function for nios ii does not support transmission of floats. Is there a convenient way to send this floating number? I have tried converting to a string using ftoa, gcvt and sprintf, but none of these solutions compile/work.

 

As an example, here are a few methods I've tried (though in the real code, only one method is uncommented):

 

sprintf(BER_s,"%4.2f" ,BER); ftoa(BER,BER_s,3); gcvt(BER,3,BER_s);   printf("BER: %s \n", BER_s);

Where BER is the float I wish to print, and BER_s is a char array - char BER_s [20];

 

Thanks in advance for your suggestions.

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Ahmed_H_Intel1
Employee
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Hi,

If it is a number why you don't transfer it to integer and print it?

You can simply use:

int(float BER);

Regards,

 

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