Arduino NANO Pinout
ATmega 328P-PU
字串串接 A$ = A$ + B$ 方式簡單
但是陣列就不使用上列方式
使用API方式串接陣列
' 使用API
Private Declare Sub CopyMemory Lib "kernel32" Alias "RtlMoveMemory" (Dest As Any, Src As Any, ByVal cb&)
If (Not AllBytes) = -1 Then ' 判斷陣列是否有初始化
AllBytes = buf
Else
NewBytesLength = UBound(buf()) + 1 ' 新資料個數
AllBytesLength = UBound(AllBytes()) ' 原資料個數
ReDim Preserve AllBytes(0 To AllBytesLength + NewBytesLength) ' 重新定義陣列,並保留資料
CopyMemory AllBytes(AllBytesLength + 1), buf(0), NewBytesLength ' 資料串接合併
End If
string類型轉成byte[]:
byte[] byteArray = System.Text.Encoding.Default.GetBytes ( str );
string str = System.Text.Encoding.Default.GetString ( byteArray );
byte[] byteArray = System.Text.Encoding.ASCII.GetBytes ( str );
string str = System.Text.Encoding.ASCII.GetString ( byteArray );
public static string ToHexString ( byte[] bytes ) // 0xae00cf => "AE00CF "
{
string hexString = string.Empty;
if ( bytes != null )
{
StringBuilder strB = new StringBuilder ();
for ( int i = 0; i < bytes.Length; i++ )
{
strB.Append ( bytes[i].ToString ( "X2" ) );
}
hexString = strB.ToString ();
}
return hexString;
}
public static byte[] GetBytes(string hexString, out int discarded)
{
discarded = 0;
string newString = "";
char c;
// remove all none A-F, 0-9, characters
for (int i=0; i<hexString.Length; i++)
{
c = hexString[i];
if (IsHexDigit(c))
newString += c;
else
discarded++;
}
// if odd number of characters, discard last character
if (newString.Length % 2 != 0)
{
discarded++;
newString = newString.Substring(0, newString.Length-1);
}
int byteLength = newString.Length / 2;
byte[] bytes = new byte[byteLength];
string hex;
int j = 0;
for (int i=0; i<bytes.Length; i++)
{
hex = new String(new Char[] {newString[j], newString[j+1]});
bytes[i] = HexToByte(hex);
j = j+2;
}
return bytes;
}