How to determin if LIN command from master is off by using S12ZVM LIN stack ?

[NoahXu]

hello, support 

 how can i detect if LIN command from LIN master is off by using S12ZVM LIN stack ?

 is there any flag i can use if the master stop sending out LIN command to slave?

i am now using the S12ZVM LIN stack .

thanks！

[NoahXu]

Hi, Namm

thank you fou your response .

i set some flags in the code, seems value in freemaster not change if i switch the master comamnd on and off. can you help to check?

the code is set like this

"

lin_Status = l_ifc_read_status(LI0);

if( lin_Status & 0x0001u ) 

{ 

Lin_flag_errorResp = 1;

}

else

{

Lin_flag_errorResp = 0; 

}

if( lin_Status & 0x0008u ) 

{ 

Lin_flag_gotoSleep = 1;

}

else

{

Lin_flag_gotoSleep = 0;  

}

"

[NamLee]

Hi NoahXu,

You mentioned that "if i switch the master comamnd on and off", so your action is power off the master, or which action have you done?

Can you tell me the purpose of this check in advance?

Moreover, please help me to check all other bit of lin_Status, just to clarify the result.

Thank you,

Nam.

[NoahXu]

Hello, Namm

"switch the master comamnd on and off" , it is the LIN scheduler on/off simulated by tools like Canoe, by turn on /off of the LIN scheduler, i simulate the LIN master on/off.

the result of the function : i_ifc_readstatus(LI0) is 0XFE30A0 which is really strange. i paste the screenshot of codeworrior IDE here. you can check it.

by the way,  lin trasmit functions is ok using this LIN Stack, which means the cfg of lin stack is ok.

please kindly help to check, thanks

[NamLee]

Hi NoahXu,

I think it's the function's address, due to result should be 16bit.

I saw your expressions, does lin_status be changed any bits when you step over the function i_ifc_readstatus?

Thank you,

Nam.

[NoahXu]

Hi, Namm

you are right, it is the address of the function .

but i checked the value and found no change of it.

in the picture i post here , you can find the register SCI0SR1 is changing when i turn on / off the LIN scheduer , but the variable"lin_Status " is still 0.