Hi,
I have a question about VoltageC component.
As I can see it is meant for measuring battery voltage.
I made some tests with it and it gives around 352 (3557 mV ->
1223*1024 / data) on Iris.
My battery actual voltage is around 3100 mV.
Is this conversion formula wrong?
Do I use VoltageC component correctly?
-----------AppNodeC.nc----------------
configuration AppNodeC {}
implementation {
components NodeC, MainC, LedsC, ActiveMessageC;
components new VoltageC() as BatteryVoltage;
NodeC.ReadBatteryVoltage -> BatteryVoltage;
-----------NodeC.nc----------------
module NodeC {
uses interface Boot;
uses interface Read<uint16_t> as ReadBatteryVoltage;
...................
}
implementation {
...................
event void Timer.fired() {
//call Leds.led1Toggle();
call ReadBatteryVoltage.read();
}
event void ReadBatteryVoltage.readDone(error_t result, uint16_t data) {
if (result != SUCCESS) {
data = 0xffff;
}
ADC= data;
ADCconvert= (uint16_t)((uint32_t)1223 * (uint32_t)1024 /
(uint32_t)data);
if (!sendBusy)
sendMessage();
}
.....................
Andres vahter
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