在cubemx配置好adc，和串口(阻塞)

 

function [nbChar,buff] = convert(u)

if coder.target('Sfun')
    buff = uint32(0);
    nbChar = uint16(0);
else
   coder.cinclude('stdio.h');
   coder.cinclude('main.h');
   coder.cinclude('getBuffPtr.h');
   
   string = char(zeros(1,20));
   stringSize = uint16(size(string,2));
   stringFormat = char(['%08x-%5.2f V',13.10,0]);
   
   tick = uint32(0);
   tick = coder.ceval('HAL_GetTick');
   %tick 08x    u 5.2f
   coder.ceval('snprintf',coder.wref(string), stringSize, coder.rref(stringFormat), tick, u)
   buff = coder.ceval('getBuffPtr',coder.wref(string));
   
   nbChar = stringSize;%其实给的多了，应该只给到0X00

   
    
end
end