Question

I am trying to access a static field of the struct which I already defined as public.
However, I still got “inaccessible due to its protection level” Can anyone help me?

public class Program
{
    public struct AT_CMD
    {
        static int x = 7;
       static  byte[] cmd_mode = new byte[3] { 0x2B, 0x2B, 0x2B };
       static  byte[] end_device_assoc = new byte[4] { 0x41, 0x54, 0x41, 0x31 };
      //should be 0 for end device, default is 0
       static  byte[] data_rate = new byte[4] { 0x41, 0x54, 0x42, 0x44 }; //3 for 9600, 5 for 38400
       static  byte[] channel = new byte[4] { 0x41, 0x54, 0x43, 0x48 }; //0x0B-0x1A
       static  byte[] Dest_addr_high = new byte[4] { 0x41, 0x54, 0x44, 0x48 }; //0 FOR 16bit
       static  byte[] Dest_addr_low = new byte[4] { 0x41, 0x54, 0x44, 0x4C };
       static  byte[] my_addr = new byte[4] { 0x41, 0x54, 0x4D, 0x59 }; // 0-0xFFFF
       static  byte[] carriage_return = new byte[1] { 0x0D };
   }  

    static void Main()
    {
        int y = AT_CMD.x;
    }
}

Answer 1

By default fields are private. Add the most limiting modifier that will still allow you to work with the structure.

public struct AT_CMD
{
    public static int x = 7;
}  

static void Main()
{
    int y = AT_CMD.x;
}