Addressing NV_FTRIM in C for KA2

CarlFST60L_3rd — Sun, 30 Sep 2007 19:53:55 GMT

Simple question, (not sure if this is in the correct section either, as i dont know what I am doing wrong)

using KA2 for a basic transmitter, written in C.

I want to load the trim, but, i get the warningC2705, and, it my problem is causing the wrong address to be loaded

Here is the code that i thought would simply load the trim from flash and store in RAM

if((NV_ICSTRM_TRIM == 0xFF) | (NV_ICSTRM_TRIM == 0x00))
    ICSTRM = 0x80;
else
    ICSTRM = NV_ICSTRM;

if(NV_FTRIM_FTRIM)
    ICSSC_FTRIM = 1;
else
    ICSSC_FTRIM = 0;

What is the correct method for loading testing/loading NV_ICSTRM_TRIM and ICSSC_FTRIM?

To save looking up the header file:
/*** ICSSC - ICS Status and Control; 0x00000017 ***/
typedef union {
byte Byte;
struct {
    byte FTRIM       :1;                                       /* ICS Fine Trim */
    byte             :1;
    byte CLKST       :1;                                       /* Clock Mode Status */
    byte             :1;
    byte             :1;
    byte             :1;
    byte             :1;
    byte             :1;
} Bits;
} ICSSCSTR;
extern volatile ICSSCSTR _ICSSC @0x00000017;
#define ICSSC                           _ICSSC.Byte
#define ICSSC_FTRIM                     _ICSSC.Bits.FTRIM
#define ICSSC_CLKST                     _ICSSC.Bits.CLKST

#define ICSSC_FTRIM_MASK                1
#define ICSSC_CLKST_MASK                4

/*** NV_ICSTRM - Nonvolatile ICS Trim Register; 0x00003FFA ***/
typedef union {
byte Byte;
struct {
    byte TRIM        :8;                                       /* ICS Trim Setting */
} Bits;
} NV_ICSTRMSTR;
/* Tip for register initialization in the user code: const byte NV_ICSTRM_INIT @0x00003FFA = <NV_ICSTRM_INITVAL>; */
#define _NV_ICSTRM (*(const NV_ICSTRMSTR *)0x00003FFA)
#define NV_ICSTRM                       _NV_ICSTRM.Byte
#define NV_ICSTRM_TRIM                  _NV_ICSTRM.Bits.TRIM

#define NV_ICSTRM_TRIM_MASK             255
#define NV_ICSTRM_TRIM_BITNUM           0

/*** NV_FTRIM - Nonvolatile ICS Fine Trim Register; 0x00003FFB ***/
typedef union {
byte Byte;
struct {
    byte FTRIM       :1;                                       /* ICS Fine Trim */
    byte             :1;
    byte             :1;
    byte             :1;
    byte             :1;
    byte             :1;
    byte             :1;
    byte             :1;
} Bits;
} NV_FTRIMSTR;
/* Tip for register initialization in the user code: const byte NV_FTRIM_INIT @0x00003FFB = <NV_FTRIM_INITVAL>; */
#define _NV_FTRIM (*(const NV_FTRIMSTR *)0x00003FFB)
#define NV_FTRIM                        _NV_FTRIM.Byte
#define NV_FTRIM_FTRIM                  _NV_FTRIM.Bits.FTRIM

#define NV_FTRIM_FTRIM_MASK             1

Message Edited by CarlFST60L_3rd on 2007-09-30 01:55 PM

Re: Addressing NV_FTRIM in C for KA2

CarlFST60L_3rd — Mon, 01 Oct 2007 09:09:06 GMT

please excuse my gramma, must learn to read before pressing submit.

This is what i have done to solve my problem

volatile byte __far NV_ICSTRM_FAR @0x00003FFA; //Added
volatile byte __far NV_FTRIM_FTRIM_FAR @0x00003FFB; //Added

I am still interested in how to use the supplied header file to address these two varibles correctly.

Message Edited by CarlFST60L_3rd on 2007-10-01 03:10 AM

Re: Addressing NV_FTRIM in C for KA2

CompilerGuru — Mon, 01 Oct 2007 20:52:14 GMT

That particular problem has been fixed in the RS08 header files since the HC08 V6.0 release, I've attached the current ones for the KA2.

Daniel

Note: I did not actually test them, just shortly looked that they do indeed address this problem.

Re: Addressing NV_FTRIM in C for KA2

CarlFST60L_3rd — Tue, 02 Oct 2007 16:52:31 GMT

Thanks!

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