Autonomo + DHT11 on GROVE

Hi guys,
I’m trying to use this grove board with a DHT11 http://www.seeedstudio.com/wiki/Grove-_Temperature_and_Humidity_Sensor but seems there no way to receive value from the sensor.
I tried different libraries:

  1. https://github.com/adafruit/DHT-sensor-library
    Here I have an error in debug mode “timeout waiting for start signal low pulse”

  2. https://github.com/Seeed-Studio/Grove_Temperature_And_Humidity_Sensor
    This should be incompatible with 48Mhz, but I tried to modify the COUNT definitiopn in DHT.h,but in any case I have a zero value read from sensor.

There is another library you can find, according to the Seed website: https://github.com/RobTillaart/Arduino/tree/master/libraries/DHTlib
But this one is probably incompatible with Autonomo

The test code is very simple, something similar to this example https://github.com/adafruit/DHT-sensor-library/blob/master/examples/DHTtester/DHTtester.ino
with the sensor connected to the Autonomo Grove Shield port A0

Could you please tell me what you think about the first two libraries?
Thanks