MAHDIKHAFAN 
Hello iam new in mini2440 i want use camera pins for make i2c software ,pins 15,14 GPE but after set pins i cannot read ,write on pins by rGPEDAT i use for set and clear pins this code //Ports : GPE15 GPE14 //Signal : IICSDA IICSCL //Binary : 10 10 rGPECON = 0xa0000000; rGPEUP = 0xffff; // The pull up function is disabled GPE[15:0] #define read_gpio_bit(x) ((rGPEDAT & (1<<(x))) ? 1 : 0) #define write_gpio_bit_set(x) (rGPEDAT |= 1<<(x)) #define write_gpio_bit_clear(x) (rGPEDAT &= ~(1<<(x))) what is meaning binary for port 01 or 10 or 11 ,..... ? this use for set pin to output , input,.... thnx for help ?