TOOLSTICK990DC Silicon Laboratories Inc, TOOLSTICK990DC Datasheet - Page 9

• Manufacturer Part Number: TOOLSTICK990DC
• Description: DAUGHTER CARD TOOLSTCK C8051F990
• Manufacturer: Silicon Laboratories Inc
• Series: ToolStickr
• Type: MCUr

Specifications of TOOLSTICK990DC

• Contents: Daughter Card
• Processor To Be Evaluated: C8051F990
• Processor Series: C8051F9xx
• Interface Type: USB
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: C8051F990
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 336-1964

6.6. Setting and Running to Breakpoints
The Silicon Laboratories microcontroller devices support up to four hardware breakpoints. A breakpoint is
associated with a specific line of code. When the processor reaches a hardware breakpoint, the code execution
stops, and the IDE refreshes all debug and watch windows. The on-chip debug hardware allows for breakpoints to
be placed on any line of executable code, including code in Interrupt Service Routines. This section provides steps
to set a breakpoint on the line of source code that increments the Num_LED_Flashes variable.
1. If the device is running, stop execution using the “Stop” button or use the Debug  Stop menu option.
2. Scroll to the Timer3_ISR function (line 684) and right-click on the variable “Num_LED_Flashes”. In the context
3. Click the “Go” button or select the Debug  Go menu option.
4. After a short time, the IDE will show that the device is halted. A blue line will be placed in the editor window to
5. Start and stop the processor a few more times. Notice that the LED blinks once for every time the processor is
menu that appears, select “Insert/Remove Breakpoint.” On the left side of the line in the editor window, a red
circle is added to indicate a breakpoint is placed on the source line.
indicate where the code execution has stopped.
started and the Num_LED_Flashes variable also increments by one.
Rev. 0.2
ToolStick-F990DC
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