Main Site Documentation

analogIn on Cerbuino


#1

Hello,
I’ve trouble trying to read data from analog input (arduino layout pins) on my Cerbuino Bee.

I try:

        _adc = New Microsoft.SPOT.Hardware.AnalogInput(DirectCast(GHI.Hardware.FEZCerb.Pin.PA0, Microsoft.SPOT.Hardware.Cpu.AnalogChannel), 10)

return _adc.Read

but it’s wrong.
I know that there is some enum with channels of the Bee, but I cannot find it.

Anyone can help me?
thanks


#2

add your reference to GHI.OSHW.Hardware

Then you can use GHI.OSHW.Hardware.FEZCerbuino.Pin.AnalogIn enums


#3

I’ve tried that before to write, but there is something wrong.

I’ve the reference to GHI.OSHW.Hardware, versione 4.2.5.0, but I cannot find the namespace
GHI.OSHW.Hardware.FEZCerbuino … :frowning:

GHI.OSHW.Hardware reports other classes but not any FEZCerbuino. In fact if I try to find it with object browser, the most similar reported is just GHIElectronics.Gadgeteer.FEZCerbuinoBee

Where is my error?


#4

I’ve also tried

  
_adc = New Microsoft.SPOT.Hardware.AnalogInput(CType(10, Microsoft.SPOT.Hardware.Cpu.AnalogChannel), 10)

using the channel documented here: https://www.ghielectronics.com/docs/45/fez-cerbuino-bee-developer#395

but I’ve a runtime
An unhandled exception of type ‘System.ArgumentException’ occurred in Microsoft.SPOT.Hardware.dll


#5

Maybe I’ve solved passing


Hardware.Cpu.Pin.GPIO_Pin10

as parameter to AnalogIn constructor, and REMOVING the second parameter (10, precisionInBits)


#6

@ baz - GHI.Hardware.FEZCerb has Pin enums


#7

Thank you, I tried that enum, but maybe it reported the runtime error caused by the second parameter I was passing to the constructor and I didn’t understand that.

Just a question: if I need to read the first pin (A0), I may pass


GHI.Hardware.FEZCerb.Pin.PA0

not


GHI.Hardware.FEZCerb.Pin.PA10

Is this right?


#8

from http://www.ghielectronics.com/docs/45/fez-cerbuino-bee-developer#395 A0 is GHI.Hardware.FEZCerb.Pin.PB1


#9

Name “A0” -> Pin “PB1” -> GHI.Hardware.FEZCerb.Pin.PB1

Ok, got it

thanks


#10

Runtime: “An unhandled exception of type ‘System.ArgumentException’ occurred in Microsoft.SPOT.Hardware.dll”

executing


   _adc = New Microsoft.SPOT.Hardware.AnalogInput(CType(pin, Microsoft.SPOT.Hardware.Cpu.AnalogChannel))

with pin= GHI.Hardware.FEZCerb.Pin.PB1

:frowning:


#11

my mistake you need a channel not a pin. going back to https://www.ghielectronics.com/docs/45/fez-cerbuino-bee-developer#395

I think your code should be:

adc = New Microsoft.SPOT.Hardware.AnalogInput(CType(10, Microsoft.SPOT.Hardware.Cpu.AnalogChannel))

#12

This works, thanks