[ERROR] ISO [DAAPI] =-1: [I2C] could not open the file bus/dev/i2c-1

I run the lesson 2 TemperatureSensor project

I can detect the BMP180

PI@raspberrypi ~/javame81ea/bin $ sudo i2cdetect y 1

0 1 2 3 4 5 6 7 8 9 a b c d e f

00:          -- -- -- -- -- -- -- -- -- -- -- -- --

10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --

20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --

30: -- -- -- -- -- -- -- -- -- -- -- UU -- -- -- --

40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --

50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --

60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --

70: -- -- -- -- -- -- -- 77

I can retrieve the info from I2CDeviceConfig


Name of the controller: null

Controller number: 1

Address: 0 x 77

Size: 7

Clock frequency: 3400000

My API permissions are

jdk.dio.DeviceMgmtPermission "*: *" 'open '.

JDK. DIO.i2cbus.I2CPermission "*: *".

But when I try

myDevice = DeviceManager.open (config);

I get

[ERROR] ISO [DAAPI] =-1: [I2C] could not open the file bus/dev/i2c-1

Any suggestions?

Ah.

You run usertest.sh as root?

sudo./usertest.sh

Needs me root access to the devices.

Tom

Tags: Java

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