I have two questions . First , how can I access the stop mode with the device MPC5644A ? I have set the register SIU.HLT.R = 0x0FFF FFF ,and I want to reserve the CPU is still run , and other's is in stop mode . But when I set the SIU.HLT.R to 0x0FFF FFFF, the device will run away occasionally ， but the system is still can access the interrupt .
Second, When I access the stop mode , there are also some times the system can't wake up via the CANBUS . I use the Jtag to debug, and I found that the system is still in stop mode , but the register SIU.HLTACK.R is 0x0 。I have set CAN_B.MCR.B.WAK_MSK = 1 CAN_B.MCR.B.SLF_WAK = 1 CAN_B.MCR.B.WAK_SRC = 1 in the init . And In the wake up interrupt set the SIU.HLT.R = 0x0 .
Are there some one can help me ? I'm realy want to your help, thank you!