MPC5xxx中的主题 control gets struck,For FCCU reset

control gets struck,For FCCU reset

harshavardhanbh — Fri, 25 Nov 2016 07:46:03 GMT

using MPC5744

I am trying to get FCCU reset,

The control gets struck in while loop, The operation I am trying to do is as follows

unlocking the configuration by putting trans key as 0xBC
provided configuration key as 0x913756AF
changing the FCCU mode to confirmation mode and waiting for operation to get successful ( this where struck)
configuring the FCCU react for short reset reaction
and injecting the fake fault status
reading the status register

code:

FCCU.CTRL.B.OPR=0X0F; // puts into Idle state

test=FCCU.CTRL.B.OPS;

/* Unlock configuration */

FCCU.TRANS_LOCK.B.TRANSKEY = 0xBC;

/* provide Config state key */

FCCU.CTRLK.R = 0x913756AF;

/* enter config state - OP1 */

FCCU.CTRL.R = 0x1;

test=FCCU.CTRL.B.OPS;

/* Verify if state change was sucessful */

while (test != 0x3); //operation status succesfull

//FCCU.CTRL.B.DEBUG = 0x1; // debug mode

/* Configure FCCU to react on NCF[7] with short reset */

FCCU.NCFS_CFG[0].R = 0x0000;

FCCU.NCFS_CFG[0].R = 0x8000; // short reset reaction

Re: control gets struck,For FCCU reset

harshavardhanbh — Fri, 25 Nov 2016 09:37:29 GMT

the code what i am using is as below

FCCU.CTRL.B.OPR=0X0F; // puts into Idle state
test=FCCU.CTRL.B.OPS;

/* Unlock configuration */
FCCU.TRANS_LOCK.B.TRANSKEY = 0xBC;

/* provide Config state key */
FCCU.CTRLK.R = 0x913756AF;

/* enter config state - OP1 */
FCCU.CTRL.R = 0x1;

//test=FCCU.CTRL.B.OPS;
/* Verify if state change was sucessful */
while (FCCU.CTRL.B.OPS != 0x3); //operation status succesfull

//FCCU.CTRL.B.DEBUG = 0x1; // debug mode

/* Configure FCCU to react on NCF[7] with short reset */
FCCU.NCFS_CFG[0].R = 0x0000;
FCCU.NCFS_CFG[0].R = 0x8000; // short reset reaction

Re: control gets struck,For FCCU reset

petervlna — Fri, 25 Nov 2016 11:59:16 GMT

Hi,

You have latched faults in FCCU NCFSx registers.

Clear them prior to state change request.

Peter

Re: control gets struck,For FCCU reset

harshavardhanbh — Sat, 26 Nov 2016 08:01:43 GMT

Thanks will try it out