MC9S12G128 wake up from Pseudo Stop Mode and enter can wake up isr

[1090097669]

after the chip sleeps, power on again after a period of time (About 20s), MCU may automatically trigger a CAN wakeup interrupt, resulting in an incorrect process,How to avoid this phenomenon？

Blow is my code:

void interrupt Vcanwkup_ISR(void)
{
CANRFLG_WUPIF = 1;
CANRFLG = 0x80;
CANCTL0 = 0x00;
CANRIER = 0x01;
System_WakeupByCanFlag = 1;

}

MCU_Stop();
if(System_WakeupByCanFlag == 1)
{
System_WakeupByCanFlag = 0;
_MCU_Restart();
}

[1090097669]

Hi,

How can I prohibit CAN Tx's action, or how to prohibit the chip from responding to CAN ACK?

[lama]

Hi,

the only possibility is to have CAN initialized in a Listen only mode.

Best regards,

Ladislav

[lama]

Hi,

There is no reason to be behavior strange if normal communication mode is correct.

Could you please compare your project with attached examples?

Rx is device assigned for sleep mode and Tx device wakes it up.

Best regards,

Ladislav