Setting Trace Trigger - Fujitsu SOFTUNE User Manual

CHAPTER2 Dependence Functions

■ Setting Trace Trigger

When preselected conditions are met while monitoring the MCU bus operation, a trigger to start a trace can
be generated. This function is called a trace trigger.
To use the trace trigger function, specify the code (/CODE) and data access (/READ/WRITE).
Up to 4 trace triggers can be preset each for code attribute and data access attribute. However, actually, the
maximum number of trace triggers is determined as indicated below because common hardware is shared
with events.
Current trace trigger maximum count setting = 4 –
Table 2.3-7 shows the trace trigger setup conditions that can be defined:
Table 2.3-7 Trace Trigger Setup Conditions
Condition
Address
Data
Access size
Status
For trace trigger setup, use the following commands:
• SET TRACETRIGGER : Trace trigger setup
• CANCEL TRACETRIGGER : Trace trigger deletion
• SHOW TRACE/STATUS : Trace setup display
Figure 2.3-2 shows the operation of the trace sampling.
Start Resume
130
(current event count setting + current data watch break count setting)
Memory location (Address bits can be masked.)
32-bit data (Data bits can be masked.) Not applicable to codes
Byte, halfword, or word
Code/data read or data write (selectable)
Figure 2.3-2 Trace Sampling Control (Trace Trigger)
Suspend Resume Suspend
Description
Resume
Suspend
Program flow
Trace buffer