//***********************************************************************
// execute_command : format and execute a command to uP/FPGA
// ===============
//
// Parameters
// cmd_name char IN single ASCII character representing uP/FPGA command
// port int IN return address of command
// register int IN register address (0->255) if FPGA command
// in_data int IN data for command
// out_data int OUT First piece of data returned by executed command
//
// Returned values
// status Error value of type 'ErrorCode@
// out_data int returned from FPGA
public FPGA_uP_IO.ErrorCode execute_command(char cmd_name, int port, int register, int in_data, out int out_data)
{
string command_str = cmd_name + " " + port + " " + register + " " + in_data + "\n";
FPGA_uP_IO.ErrorCode status = (do_command(command_str, out out_data));
return(status);
}
//****************************************************************
// Run command to write to a specified register
private void Write_Register_Click(object sender, EventArgs e)
{
int out_data;
int data = int.Parse(textBox1.Text, System.Globalization.NumberStyles.HexNumber);
FPGA_uP_IO.ErrorCode status = FPGA_uP_IO.execute_command('w', DEFAULT_PORT, (int)numericUpDown1.Value, data, out out_data);
InfoWindow.AppendText("Return code = " + status + Environment.NewLine);
}
private void Close__COM_port_Click(object sender, EventArgs e)
{
FPGA_uP_IO.ErrorCode status = FPGA_uP_IO.Close_comms();
if (status != FPGA_uP_IO.ErrorCode.NO_ERROR)
{
InfoWindow.AppendText("Cannot close COM port" + Environment.NewLine);
return;
}
InfoWindow.AppendText("COM port now closed" + Environment.NewLine);
}
//****************************************************************
// Run command to read a specified register
private void Read_Register_Click(object sender, EventArgs e)
{
int data;
int count = (int)numericUpDown8.Value;
for (int i = 0; i < count; i++)
{
FPGA_uP_IO.ErrorCode status = FPGA_uP_IO.execute_command('r', DEFAULT_PORT, (int)numericUpDown2.Value, 0, out data);
InfoWindow.AppendText("Register Value = " + data + "/0x" + Convert.ToString(data, 16) + Environment.NewLine);
InfoWindow.AppendText("Return code = " + status + Environment.NewLine);
}
}
//***********************************************************
// do_command : execute command on uP/FPGA system
// ==========
public FPGA_uP_IO.ErrorCode do_command(string command, out int data)
{
string reply_string;
FPGA_uP_IO.ErrorCode status = FPGA_uP_IO.ErrorCode.NO_ERROR;
//
// if in Debug mode execute a local version of 'do_command' thet
// writes received debug information to a debug window.
//
if (!Debug)
{
int tmp_data = 0;
status = FPGA_uP_IO.do_command(command, out tmp_data);
data = tmp_data;
return(status);
}
reply_string = "\n";
status = FPGA_uP_IO.send_command(command);
data = 0;
if (status != FPGA_uP_IO.ErrorCode.NO_ERROR)
{
return(status);
}
for (; ;)
{
status = FPGA_uP_IO.get_reply(ref reply_string);
if ((reply_string[0] == 'D') && (reply_string[1] == ':'))
{
DebugWindow.AppendText(reply_string + Environment.NewLine);
continue;
}
else
{
break;
}
}
if (status != FPGA_uP_IO.ErrorCode.NO_ERROR)
{
return(status);
}
status = FPGA_uP_IO.parse_parameter_string(reply_string);
if (status != FPGA_uP_IO.ErrorCode.NO_ERROR)
{
return(status);
}
data = FPGA_uP_IO.int_parameters[2];
return(status);
}
//***********************************************************
// Open_COM_port : Open selected seial COM port
// =============
private void Open_COM_port(object sender, EventArgs e)
{
if (comboBox1.SelectedItem == null)
{
InfoWindow.AppendText("No COM port selected " + Environment.NewLine);
return;
}
string com_port = comboBox1.SelectedItem.ToString();
int baud_rate = Convert.ToInt32(comboBox2.SelectedItem);
FPGA_uP_IO.ErrorCode status = FPGA_uP_IO.Init_comms(com_port, baud_rate);
if (status != FPGA_uP_IO.ErrorCode.NO_ERROR)
{
InfoWindow.AppendText("Cannot open " + com_port + Environment.NewLine);
return;
}
connected = true;
button4.Enabled = true;
InfoWindow.AppendText(com_port + " now open" + Environment.NewLine);
}
