ADC problem about MPC5744P

[qm1013]

Hello , I have some problems about the ADC configuration of the MPC5744P.

The configuration steps are bellow:

1. SIUL2_MSCR(PE7) = SIUL2_MSCR_APC;

2. NCMR0.B.CH6 =1u;

3. ADC0 Module Calibration;

4. ADC0 Module Init;

for(;;){

   read specified channel value.

}

Then the program run.

When the PE7 is hang in the air, the pin measured with 100mv voltage . Was it right ?

[PetrS]

Hi,

yes, if you measure floating pin you can get nonzero value as conversion result.

BR, Petr