problem to initiate the CANIDAC register on 9S08DZ60

cocheca · ‎11-12-2008

Hy,
I´m try to set up the MSCAN configuration but the register CANIDAC don´t change it factory value of 0x00.
Someone know this problem ???
I tried everything I know but any of them has worked. I need 4 acceptance filters of 16-Bits.
For example, in the initialization mode, I try:
"...
// CAN ID Acceptance Mode
// 0-> 2x32, 1-> 4x16, 2-> 8x8, 3-> closed
CANIDAC = 0x10;

//or ..
// CANIDAC_IDAM = 0x01;

//or...
// CANIDAC_IDAM1 = FALSE; //
// CANIDAC_IDAM0 = TRUE;
..."

I all cases the register CANIDAC remains with the value 0x00

I hope someone could help me.
Thanks, Jose.-

cocheca · ‎11-13-2008

Hy,

EXCUSE ME !!!
I find the problem.

In the INIT routine i haven't setting CANE before the initialization mode start. Then the MC haven´t accept set up the CANIDAC register.

Thanks and Best Regards (sorry for my english).

--------------
Now, this is my the init routine:

#include "target.h"
#include "Commdef.h"
#include "mscanid.h"
#include "mscan.h"

void MSCANInit(void)
{
UINT8 sj,p;
UINT8 t_seg1, t_seg2;

if (! CANCTL0_INITRQ)
    CANCTL0_INITRQ = TRUE; // Active MSCAN initialization mode

while (!CANCTL1_INITAK)   // Wait until the MSCAN is in initialization mode
    ;

CANCTL1_CANE = TRUE;      // ENABLE MSCAN module

sj    = (SJW-1)<<6;
p     = (BRP-1);

// Configures SJW and Tq clock Baud Rate Prescaler
CANBTR0 = (sj | p);

t_seg1 = (TSEG1-1);
t_seg2 = (TSEG2-1)<<4;

// Configure Time Segment 1 and 2, and one Sample per bit
CANBTR1 = (t_seg1 | t_seg2);

// CAN ID Acceptance Registers
CANIDAR0 = CAN_IDF0;
CANIDAR1 = CAN_IDF1;
CANIDAR2 = CAN_IDF2;
CANIDAR3 = CAN_IDF3;
CANIDAR4 = CAN_IDF4;
CANIDAR5 = CAN_IDF5;
CANIDAR6 = CAN_IDF6;
CANIDAR7 = CAN_IDF7;

// CAN ID Mask Filters - (0 match - 1 ignore)
CANIDMR0 = CAN_IDMF0;
CANIDMR1 = CAN_IDMF1;
CANIDMR2 = CAN_IDMF2;
CANIDMR3 = CAN_IDMF3;
CANIDMR4 = CAN_IDMF4;
CANIDMR5 = CAN_IDMF5;
CANIDMR6 = CAN_IDMF6;
CANIDMR7 = CAN_IDMF7;

// CAN ID Acceptance Mode - (CANIDAC_IDAM = 0 2x32, 1 4x16, 2 8x8, 3 closed)
#ifdef MASTER
CANIDAC = CAN_FMODE_MASTER;
#endif
#ifdef SENSOR
CANIDAC = CAN_FMODE_SENSOR;
#endif

// Enable MSCAN, normal operation and select the bus clock as MSCAN clock source
   CANCTL1 = 0xC0;              // ENABLE MSCAN SIN LOOP BACK
// CANCTL1 = 0xE0;              // ENABLE MSCAN CON LOOP BACK

// Active MSCAN Normal Operation
CANCTL0 = 0x00;

// Wait until the MSCAN operates normally
while(CANCTL1_INITAK)
    ;

// Wait until MSCAN is synchronized to the CAN bus
while(! CANCTL0_SYNCH)
    ;

} //MSCANInit
---------------------

problem to initiate the CANIDAC register on 9S08DZ60

problem to initiate the CANIDAC register on 9S08DZ60

General