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Mailbox
17.1.4.1.1.2 Mailbox Global Initialization
17.1.4.1.1.2.1 Main Sequence - Mailbox Global Initialization
This procedure initializes the mailbox module after a power-on or software reset.
Table 17-7. Mailbox Global Initialization
Register/Bitfield/Programming Model Value
Perform a software reset MAILBOX_SYSCONFIG[0].SOFTRESET 1
Wait until reset is complete MAILBOX_SYSCONFIG[0].SOFTRESET 0
Set idle mode configuration MAILBOX_SYSCONFIG[3:2].SIDLEMOD 0x-
E
17.1.4.1.2 Operational Modes Configuration
17.1.4.1.2.1 Main Sequence - Sending a Message (Polling Method)
Table 17-8. Sending a Message (Polling Method)
Step Register/Bitfield/Programming Model Value
IF : Is FIFO full ? MAILBOX_FIFOSTATUS_m[0].FIFOFULL =1h
MB
Wait until at least one message slot is MAILBOX_FIFOSTATUS_m[0].FIFOFULL =0h
available MB
ELSE
Write message MAILBOX_MESSAGE_m[31:0].MESSAG ----h
EVALUEMBM
ENDIF
17.1.4.1.2.2 Main Sequence - Sending a Message (Interrupt Method)
Table 17-9. Sending a Message (Interrupt Method)
Step Register/Bitfield/Programming Model Value
IF : Is FIFO full ? MAILBOX_FIFOSTATUS_m[0].FIFOFULL =1h
MB
Enable interrupt event MAILBOX_IRQENABLE_SET_u[1+ m*2] 1h
User(processor) can perform anothr task
until interrupt occurs
ELSE
Write message MAILBOX_MESSAGE_m[31:0].MESSAG ----h
EVALUEMBM
ENDIF
3243
SPRUH73H–October 2011–Revised April 2013 Interprocessor Communication
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