Hi guys,
Basically Im designing a Bootloader Interface over CAN application. The previous software took a .HEX file and sent it down the CAN network. This worked almost perfectly but unfortunately we had problems on the recieveing device (PIC 18F). So the decision was taken to now send a .BIN file down the CAN, which was a lot easier as it only needed to setup the memory start point once, then stream down the contents of the file.
The problem I have is converting a .HEX file into .BIN file using the application. At the moment im using the HEX2BIN.exe (http://www.tech-tools.com/d_hx2bin.htm) application, which uses a command line interface to convert the .HEX file into a .BIN.
I have used the following code to do this:
int CVICALLBACK hiddenFileBrowserCB (int panel, int control, int event,void *callbackData, int eventData1, int eventData2)
{
int selectedIndex=0;
char * file = malloc(sizeof(char) * 200);
char h2bPath[200] = "..\\HEX2BIN.exe ";
char h2bTarget[200] = "..\\bin\\h2b.bin ";
char h2bSource[200] = {0};
char size, len, iloop = 0, validHexFile = 0;
char dotHexPos = 0;
switch (event)
{
case EVENT_SELECTION_CHANGE:
GetCtrlAttribute (panelHandleFileBrowse, hiddenFileBrowserIndex, ATTR_CTRL_INDEX, &selectedIndex);
GetValueFromIndex(panelHandleFileBrowse, hiddenFileBrowserIndex, selectedIndex, file);
if(file == NULL)
{
SetCtrlVal(panelHandle, PANEL_HEXFILE, " ");
}
else
{
SetCtrlVal(panelHandle, PANEL_HEXFILE, file);
HidePanel (panelHandleFileBrowse);
SetCtrlAttribute(panelHandle,PANEL_CMDWRITEFLASH,ATTR_DIMMED, 0);
SetCtrlAttribute(panelHandle,PANEL_PROGRESS_WRITE,ATTR_VISIBLE, 1);
SetCtrlAttribute(panelHandle,PANEL_PROGRESS_WRITE,ATTR_FILL_COLOR,VAL_GREEN);
SetCtrlAttribute(panelHandle,PANEL_PROGRESS_READ,ATTR_VISIBLE, 1);
SetCtrlAttribute(panelHandle,PANEL_PROGRESS_READ,ATTR_FILL_COLOR,VAL_BLUE);
//SetCtrlAttribute(panelHandle,PANEL_PROGRESS_WRITE,ATTR_FRAME_COLOR,VAL_DK_GREEN);
/*Release Code for Selecting Hex file, Checking it then Converting into .Bin*/
len = strlen(file);
if(strstr(file,".hex") != NULL)
{
if((file[len-3] == 'h') && (file[len-2] == 'e') && (file[len-1] == 'x'))
{
validHexFile = 1; //true
}
}
if(validHexFile)
{
//Build up command to convert .hex to .bin file
memcpy(h2bSource, file, strlen(file));
size = strlen(h2bSource);
h2bSource[size] = ' ';
size = strlen(h2bPath);
memcpy(&h2bPath[size],h2bSource, strlen(h2bSource));
size = strlen(h2bPath);
memcpy(&h2bPath[size],h2bTarget, strlen(h2bTarget));
LaunchExecutable(h2bPath);
ReadHexFile("..\\bin\\h2b.bin");
//Activate Write Flash Button
}
else
{
SetCtrlVal(panelHandle, PANEL_HEXFILE, " ");
//Keep write flash button deactivated
}
}
break;
}
return 0;
}
Now this code does do it's job however its extremely touch and go, for example if the .BIN file doesn't exist it may cause an error, or when run as an executabable LabWindows displays a System IO error although the conversion still works. And when using it on another computer it doesn't work at all.
Anybody have any ideas or alternatives or know of any C library that could do similar functions without the headaches?
Much appreciated
