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IAR Embedded Workbench for RX 5.20

Data breakpoints dialog box (C-SPY hardware debugger drivers)

In this section:

The Data breakpoints dialog box is available from the context menu in the editor window, Breakpoints window, the Memory window, and in the Disassembly window.

DataBreakpointDialog_HW_RX.png

This figure reflects the C-SPY hardware debugger drivers.

Use the Data breakpoints dialog box to set a data breakpoint. Data breakpoints never stop execution within a single instruction. They are recorded and reported after the instruction is executed.

Requirements

A C-SPY hardware debugger driver.

Break At

Specify the location of the breakpoint, or the start location if you select the address condition Range. Alternatively, click the Edit button to open the Enter Location dialog box, see Enter Location dialog box.

Address Condition

Determines whether there should be a trigger condition for the address where the data is located:

None

There is no condition for the address.

Mask

Specify an address mask and choose a Compare setting.

Compare

Specify whether the condition is that the address should be equal (Specified value (==)) or not equal (Any other value (!=)) to the mask.

Range

Uses the location in the Break At field as the start address of an address range. Use the text box to specify whether the trigger condition applies to inside the range or outside the range.

End address

Specify the end location if the Break At field contains the start location of an address range. Alternatively, click the Edit button to open the Enter Location dialog box, see Enter Location dialog box.

Data Condition

Determines whether there should be data trigger conditions for the breakpoint:

Read/Write

Read — the breakpoint is only triggered by a read access

Write — the breakpoint is only triggered by a write access

Read/Write — the breakpoint is triggered by all accesses.

Access size

Determines whether there should be a size—in practice, a range—of locations where the breakpoint will trigger. Each fetch access to the specified memory range will trigger the breakpoint. Choose between:

Auto — The access size will be set automatically.

Byte — The access size will be set to a byte.

Word — The access size will be set to a word.

Long — The access size will be set to a long.

Compared data

Set a value that the accessed data should be compared to, using decimal notation or hexadecimal notation (prefixed by 0x).

Mask

Set a mask for the compared data.

Compare

Specify whether the condition is that the data should be equal (Specified value (==)) or not equal (Any other value (!=)) to the mask.