public void ta(PigpiodIf pigpiodIf, CancellationToken ct)
{
int h, b, e;
string TEXT;
byte[] recv = new byte[2048];
Console.WriteLine("\r\nSerial link tests.");
/* this test needs RXD and TXD to be connected */
h = pigpiodIf.serial_open("/dev/ttyAMA0", 57600, 0);
CHECK(10, 1, h, 0, 0, "serial open", ct);
pigpiodIf.time_sleep(0.1); /* allow time for transmission */
b = pigpiodIf.serial_read((UInt32)h, recv); /* flush buffer */
b = pigpiodIf.serial_data_available((UInt32)h);
CHECK(10, 2, b, 0, 0, "serial data available", ct);
TEXT = @"
To be, or not to be, that is the question -
Whether 'tis Nobler in the mind to suffer
The Slings and Arrows of outrageous Fortune,
Or to take Arms against a Sea of troubles,
";
var bytes = System.Text.Encoding.UTF8.GetBytes(TEXT);
e = pigpiodIf.serial_write((UInt32)h, bytes);
CHECK(10, 3, e, 0, 0, "serial write", ct);
e = pigpiodIf.serial_write_byte((UInt32)h, 0xAA);
e = pigpiodIf.serial_write_byte((UInt32)h, 0x55);
e = pigpiodIf.serial_write_byte((UInt32)h, 0x00);
e = pigpiodIf.serial_write_byte((UInt32)h, 0xFF);
CHECK(10, 4, e, 0, 0, "serial write byte", ct);
pigpiodIf.time_sleep(0.1); /* allow time for transmission */
b = pigpiodIf.serial_data_available((UInt32)h);
CHECK(10, 5, b, bytes.Length + 4, 0, "serial data available", ct);
recv = new byte[bytes.Length];
b = pigpiodIf.serial_read((UInt32)h, recv);
CHECK(10, 6, b, bytes.Length, 0, "serial read", ct);
recv = recv.Take(b).ToArray();
string text = System.Text.Encoding.UTF8.GetString(recv);
CHECK(10, 7, string.Compare(TEXT, text), 0, 0, "serial read", ct);
b = pigpiodIf.serial_read_byte((UInt32)h);
CHECK(10, 8, b, 0xAA, 0, "serial read byte", ct);
b = pigpiodIf.serial_read_byte((UInt32)h);
CHECK(10, 9, b, 0x55, 0, "serial read byte", ct);
b = pigpiodIf.serial_read_byte((UInt32)h);
CHECK(10, 10, b, 0x00, 0, "serial read byte", ct);
b = pigpiodIf.serial_read_byte((UInt32)h);
CHECK(10, 11, b, 0xFF, 0, "serial read byte", ct);
b = pigpiodIf.serial_data_available((UInt32)h);
CHECK(10, 12, b, 0, 0, "serial data availabe", ct);
e = pigpiodIf.serial_close((UInt32)h);
CHECK(10, 13, e, 0, 0, "serial close", ct);
}