write code in non-volatile memory of MCP2221

I need help on how to write a very small program to turn the GPI 0 of MCP2221 ON in power up by default.
 
MCP2221 has two memories. #1SRAM, #2Flash (Non-volatile)
 
In order to have the power-up default, the program needs to be sitted in the flash and I do not know how to do it.
 
I prefer to write that program in C#.
 

The utility from this page (documents ) seems to have this feature https://www.microchip.com...21#additional-features
[edit] link did not point to documents tab

noel_t
I want to turn on the GP2 and GP3 high immediately when MCP2221 powered up.

Did you read the datasheet I linked to?
That is controlled by registers GPSETTING2, and GPSETTING3
"GPIO output" and "Default output level=1" are the factory default settings, but "GPDES" defaults to "Dedicated function operation" and you need to change it to "GPIO operation".
 

I am trying to get the GPIO settings first. (Page 58 of DLL user manual). Then, I can write to GPIOSETTINGS. Please check if my approach is correct.
 
 
static void GPIOSettings()
{
bool errorOccurredMCP = false;


MCP2221.M_Mcp2221_GetGpioSettings(Device, WRITE_TO_FLASH, pinFunctions, pinDirections, outputValues);
errorOccurredMCP = CheckForError();
Console.WriteLine("Pin Functions value for GP0 {0}", outputValues[0]);


pinFunctions[3] = 1;
Console.WriteLine(pinFunctions[3]);
//pinFunctions[0] = bitmask;
// x = pinFunctions[0] & Convert.ToByte(bitmask);
Console.WriteLine("Value of bit 4 is", x);
MCP2221.M_Mcp2221_SetGpioSettings(Device, WRITE_TO_FLASH, pinFunctions, pinDirections, outputValues);

errorOccurredMCP = CheckForError();
if (!errorOccurredMCP)
Console.WriteLine("Operation successful");
else
Console.WriteLine("Operation unsuccessful");
}