Other Parts Discussed in Thread: MOTORWARE
hi,
I want to convert the IQ values to float values
This works:
return (intr->AdcData.dcBus *(USER_IQ_FULL_SCALE_VOLTAGE_V/1000.0)) / 16777216.0;
this doesn't:
return _IQtoF (_IQmpy((float)intr->AdcData.dcBus,_IQ(USER_IQ_FULL_SCALE_VOLTAGE_V/1000.0)));
I tied many typecast to float. But without success.
What is wrong?
My project is built using fpu32 code model:
I am running on a F28069 (regular device, not the Instaspin 'M' device).
You can access the .asm files in the project options, Build->C2000 Compiler->Advanced Options ->Asxsembler Options. Check the -k option, and also use -ss to interlist the C source.
If you think there is a ROM problem (I doubt there is, but...), adjust your linker .cmd file to NOT use the IQ stuff in the ROM. You probably have something like this in your .cmd:
IQmath : > FLASH, PAGE = 0
IQmathTables : > IQTABLES, PAGE = 0, TYPE = NOLOAD
IQmathTables2 : > IQTABLES2, PAGE = 0, TYPE = NOLOAD
{
IQmath_fpu32.lib<IQNexpTable.obj> (IQmathTablesRam)
}
IQmathTables3 : > IQTABLES3, PAGE = 0, TYPE = NOLOAD
{
IQmath_fpu32.lib<IQNasinTable.obj> (IQmathTablesRam)
}
Instead, link the tables to flash and get rid of the NOLOAD:
IQmath : > FLASH, PAGE = 0
IQmathTables : > FLASH, PAGE = 0
IQmathTables2 : > FLASH, PAGE = 0
{
IQmath_fpu32.lib<IQNexpTable.obj> (IQmathTablesRam)
}
IQmathTables3 : > FLASH, PAGE = 0
{
IQmath_fpu32.lib<IQNasinTable.obj> (IQmathTablesRam)
}
This will create new tables in flash for these sections, and not use the ROM tables.
- David
EVS,
are you using the correct libs for an FPU project that we use in MotorWare
AND are you following the correct LINK ORDER per our projects?
