Can you please give us more details to help you better?
To print float over UART convert float to a char string and use the print string UART API.
sprintf works with a char buffer, declare one first, the longest length you will need + 1,
latter for storing the NULL char, string terminator.
Formatting string creation for sprintf() attached.
printf_4.pdf 81.5 K
Thanks Danaaknight for your help.