Refer this link and replace the Potentiometer with the LM358 and make changes in coding according to the sensor output
http://www.engineersgarage.com/arm-projects/how-to-use-inbuilt-adc-of-lpc-2148
Continue to Site
Refer this link and replace the Potentiometer with the LM358 and make changes in coding according to the sensor output
http://www.engineersgarage.com/arm-projects/how-to-use-inbuilt-adc-of-lpc-2148