[Tinyos-help] Battery Voltage measurement

[fhg07 at c3sl.ufpr.br]

According to "MPR-MIB Users Manual":
"To compute the battery voltage:
   1. Set the BAT_MON processor pin (PA5/AD5) to HI.
   2. Program the application code to measure ADC Channel 7.
   3. Compute battery voltage, Vbatt, from Channel 7’s data by:
      Vbatt = Vref × ADC _ FS ADC _ Count
      where:
      Vbatt = Battery voltage
      ADC_FS = 1024
      Vref = External voltage reference = 1.223 V
      ADC_Count = Data from the ADC measurement of Channel 7"

(This is for MICA2)


But how do I get this ADC_Count? Would that be what VoltageRead of
VoltageC returns? I am not sure about that, but the veracity of this
information is really  important. If anyone can affirm this or correct me,
please answer.



Thanks in advance,
Fernando.