r@wboom 
hello experts, I'm been working mini240 for 2 months. i have a problem while connecting i2c pcf8591 IC to mini2440. i connected the pins as above figure but when i command it i2cdetect it tells the address 0x48. it is OK. now when i do i2cset 0 0x48 0x30 0x10 and enter it doesn't show me 0x10 at that address. now again i read it using i2cget 0 0x48 0x30 it shows me garbage value. what happens with this.. reply. thank you