Has anyone used the OPB Timer on the MicroBlaze?
I am trying to figure out how it works and by doing that I have inspected some adresses:
in the xparameters.h #define XPAR_TESTTIMER_BASEADDR 0x41C00000
in the xtmrctr_l.h #define XTC_TCSR_OFFSET 0 /**< control/status register */ #define XTC_TLR_OFFSET 4 /**< load register */ #define XTC_TCR_OFFSET 8 /**< timer counter register */
After I have called the function XTmrCtr_mWriteReg(XPAR_TESTTIMER_BASEADDR, 0, XTC_TLR_OFFSET,
0x0F0F0F0F); I suspected the memory to look like this:
0x41C00000 00 00 00 00 00 00 00 00 0f 0f 0f0f 00 00 00 00
0x41C00010 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
But however it looks like this. Does anyone know whats wrong?
0x41C00000 00 00 00 00 0f 0f 0f 0f 00 00 00 00 00 00 00 00
0x41C00010 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
in the in the xtmrctr_l.h The function I am calling is defined like this: #define XTmrCtr_mWriteReg(BaseAddress, TmrCtrNumber, RegOffset, ValueToWrite) \ XIo_Out32(((BaseAddress) + XTmrCtr_Offsets[(TmrCtrNumber)] + \ (RegOffset)), (ValueToWrite))
The XTmrCtr_Offsets[(TmrCtrNumber)] is "defined" ekstern extern Xuint8 XTmrCtr_Offsets[]; Where is it ? Do I need to include some other headers? I suspect it to be the reason that the memory looks unexpected.
Raymond