Hello Stefan,
If you look in here C:\ProgramData\MatrixTSL\FlowcodeV10\CAL\ESP\ESP_CAL_File.c
Around line 193 we have this which opens the file in a mode that allows read and append write access. Unfortunatley this also seems to be creating the file if it doesn't already exist.
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MX_FILE_FP_X[MX_FILE_IDX_X] = fopen (FCL_FILEPATH, "a+");
I can try to first open the file in read mode to check if the file is there, if it is then I can close the file again and then re-open in a+ mode.
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//Open file for in read mode - ensure we don't create new files
MX_FILE_FP_X[MX_FILE_IDX_X] = fopen (FCL_FILEPATH, "r");
//if file not found and creation error
if (MX_FILE_FP_X[MX_FILE_IDX_X] == NULL)
{
//ESP_LOGE(TAG, "Failed to open file for reading");
return 1;
}
//Close file reference
fclose(MX_FILE_FP_X[MX_FILE_IDX_X]);
//Open file for append and reading
MX_FILE_FP_X[MX_FILE_IDX_X] = fopen (FCL_FILEPATH, "a+");
Do you want to try replacing the file with this one and see if this resolves the problem for you.
The file needs to live here, just copy and paste the address into the file explorer address bar.
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C:\ProgramData\MatrixTSL\FlowcodeV10\CAL\ESP\
If it does solve the problem for you then I'll push it out to the library updates.
It looks like CreateFile also uses OpenFile CAL C function so I've added a new CreateFile C function and updated the component to point to this. I'll roll this out with the library update if open is now working as expected.
