Unicens Simple Test

1. Parse XML and Start UNICENS
2. Set Master Volume to 255
3. Set Master Volume to 230
4. Set Master Volume to 215
5. Set Master Volume to 200
6. Set Master Volume to 185
7. Set Master Volume to 0

1. Set left=200 right=250
2. Set right=250 left=200
3. Set right=255 left=255

1. Write I2C to 0x270 (mute)
2. Write I2C to 0x271 (mute)
3. Write I2C to 0x272 (mute)