TMS320F28335: Load hex file in flash from C# GUI through UART/USB

Nick,

Please see this App Note regarding the serial flash programmer and sci flash kernel.

www.ti.com/lit/sprabv4


sal

Hi Sal

Thanks for your suggestion, but sprabv4 provide C++ example.

Is there examples any in C#?

No. We don't have an exact solution for your class assignment. But you can use the source code and solution we provide to create your own solution.

sal

Hi Sal

Thanks for clarification. One more question? Is this solution going to work only for SCI-A Boot mode? What if my boot mode is jump to flash and I would like to do a serial flash programming? is it possible ?

Thanks
Nick

It is intended to work with the SCIA boot loader. You can put a bootloading application in flash and boot to flash and begin to execute your own bootloader. You will need to modify your host application to accommodate and communicate with your bootloader. It is possible.

Regards,
sal

Thanks for response

But I can't get to work from C#.
Here is the main function that boot .a00 from GUI:

.a00 is created using hex2000 like this:
C:\ti\ccsv5\tools\compiler\c2000_6.1.0\bin\hex2000.exe" -i <My_outFile>.out -a -o <Converted_out_file>.a00 -boot -i2c8 -i2cpsc=0x1D -i2cclkh=0x05 -i2cclkl=0x0A


I took this function from LightingDCDC source code

public string LoadProgramFromFile(string port, string path)
{
try
{
char oldChar = 'X';

this.Close(); //close port

int oldBaud = Convert.ToInt32(cboBaudRate.Text);

this.PortName = port;

int BaudRate = 38400;

this.Open();

this.WriteString("A");
int temp = Convert.ToInt32(this.ReadByte());
if (temp == 65)
{
// Create an instance of StreamReader to read from a file.
// The using statement also closes the StreamReader.
using (StreamReader sr = new StreamReader(path))
{
byte[] echoedBytes = new byte[256];
byte[] toBeTxedBytes = new byte[256];
char readChar;
int i = 0;

while (sr.EndOfStream != true)
{
readChar = (char)(sr.Read());
if ((readChar >= 'A' && readChar <= 'F') || (readChar >= '0' && readChar <= '9'))
{
if (oldChar != 'X')
{
byte b = (byte)(Convert.ToInt32(readChar.ToString(), 16) + (Convert.ToInt32(oldChar.ToString(), 16) * 16));

oldChar = 'X';
toBeTxedBytes[i] = b;
i++;
}
else
{
oldChar = readChar;
}
}
else
{
oldChar = 'X';
}
if (i == 256)
{
echoedBytes = this.WriteBytes(toBeTxedBytes);
if (echoedBytes == null)
{
throw new InvalidProgramException();
}
//if (prb.Value >= 100)
//{
// prb.Value = 0;
//}
//prb.Value = prb.Value + 2;
i = 0;
}
}
if (i != 0)
{
byte[] byteBufferRemaining = new byte[i];
for (int p = 0; p < i; p++)
{
byteBufferRemaining[p] = toBeTxedBytes[p];
}
echoedBytes = this.WriteBytes(byteBufferRemaining);
if (echoedBytes == null)
{
throw new InvalidProgramException();
}
// prb.Value = 100;

this.Close(); // close port
BaudRate = oldBaud;
return ("Program Successfully Loaded");
}
}
this.Close(); //close port
BaudRate = oldBaud;
return ("Error: Program Did Not Load. Please Try Again.");
}
else
{
this.Close();
BaudRate = oldBaud;
return ("Error: Improper COM Port, Power is Off, Program was Already Loaded, or SCI Boot Jumper is Not Placed.");
}


}
catch (Exception err)
{
this.Close();
return ("Error: Program Did Not Load. Please Try Again.");
}
}




any suggestions?

Nick,

We will not be able to help you with this. If you have more specific questions regarding the SCI or the serial flash programmer or the bootloaders, then we will be able to provide you some more help.

Regards,
sal

Thanks

Is really confusing and new to me all this stuff with with f28335 control card.

Ok I read on a document that to have SCI-A boot mode I need to have GPIO 87,86 and 85 to 1 and 84 to 0, do I need to do it from CCS and push the project from CCS?

Then I tried to use serial flash programming as you mentioned but I get assert error. I’m uploading blinky_dc_cpu_01 and blinky_dc_cpu02 by running this command :  

serial_flash_programmer.exe -d f2803x -k f2837xD_fw_upgrade_example/blinky_dc_cpu01.txt -a f2837xD_fw_upgrade_example/blinky_dc_cpu02.txt -p COM9

I get some assert error, do you have any suggestions?

I also tried the GUI LIGHTING_DCDC_v2.2, on set up connection I get the right  port ,pressed on continue its says   “please make sure SCI Boot jumper is placed or that the target is flashed then try again” . My question is , what’s SCI boot jumper ? Do I physically place this jumper on docking station? If yes in which pin?

Sorry if I ask all this question but is a bit confusing

Thanks

Nick