RealView Debugger User Guide - ARM Information Center

Working with BreakpointsEnter Data address expressionChoose the type of hardware breakpoint that you want to set. The optionsare:• HW Access• HW Read• HW Write.Enter the data address expression that must be accessed to trigger thebreakpoint, for example:@dtmf\DTMF\int0_handlerAnd if Data Value matchesSelect this check box if you want to test a data value to trigger thebreakpoint. Enter the data value to test in the data field.You can enter values directly in these fields, or click the drop-down arrow to the rightof these fields to choose from a list browser (see List browser dialog boxes on page 8-2),select from your personal Favorites List (see Favorites categories used by RealViewDebugger features on page 8-32), or select from a list of previously-used expressions.4.5.3 Using the HW Break if X, then if Y dialog boxThe HW Break if X, then if Y dialog box enables you to specify a hardware breakpointthat uses two chained breakpoint units (see Chaining breakpoints on page 4-30 for moreinformation). The breakpoint is set at the specified memory location or address range(see Specifying address ranges on page 4-7) depending on the values read.Displaying the HW Break if X, then if Y dialog boxTo display the HW Break if X, then if Y dialog box, shown in Figure 4-8, select thefollowing option from the Code window main menu:Debug → Breakpoints → Hardware → HW Break if X, then if Y...Figure 4-8 HW break if X, then if Y dialog boxARM DUI 0153G Copyright © 2002-2005 ARM Limited. All rights reserved. 4-27