PICAXE Manual Section 1 - TechnoPujades - Free

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www.picaxe.co.ukSection 1 54GETTING STARTEDBASIC SimulationSimulations are available when using the ‘colour syntax’ mode. This option isselected from the View>Options>Editor menu.When a BASIC program has been entered, the simulation is started by clicking theSimulate >Run menu (or pressing + )The main simulation panel is always displayed during a simulation, but varies inappearance to match the current PICAXE chip mode (View > Options menu).However similar functions apply in each case.Outputs are shown as numbered LED indicators. LED on indicates a logiclevel 1 .Inputs are shown as buttons with LED indicator. To change condition simplyclick on the button. LED on indicates a logic level 1.Analogue input values are shown in a grid and can be altered by the scroll up/down buttons or by typing over the value directly (0-255). These are thevalues used by the ‘readadc’ command.The ‘generic’ value operates in a similar manner (0-65535) and is used by thefollowing commands as the input value: count, pulsin, readadc10,readtemp, readtemp12 etc.The reset (RST) button resets the simulation (program flow starts again fromtop of the program and all variables are reset).revolution(c) Revolution Education Ltd. Email: info@rev-ed.co.uk Web: www.rev-ed.co.ukVersion 6.9 07/2009All rights reserved.54
www.picaxe.co.ukSection 1 55GETTING STARTEDProgram Flow Control and BreakpointsThree buttons on the main simulation panel are shortcut buttons for theSimulation menu functions.> start / stop the simulation} single step through the simulation| | pause the simulation at the current lineBreakpoints can be placed in (removed from) the program by simply clickingover the line number in the margin. Alternatively the Simulation > Togglebreakpoint menu may be used to insert/remove a breakpoint at the current cursorposition. Breakpoints are indicated by a red bar in the margin.To single step a program place a breakpoint on the first line you want to studyand then click Run. From that point on use } to step through the program.Display of the other available panels (upon simulation start) is determined by theSimulate > Simulation Panels options.To change an input value click on the‘switch’ beside the pin layout. To changean analogue value use the slider to alterthe analogue value.The ‘generic’ value is used to enter datafor commands such as count, pulsin etc.Variables PanelThe variables panel shows the currentbyte (b0, b1 etc) or word (w0, w1 etc)variable values. To change a variable valuedouble click over the variable whilst theprogram is paused. You can then enter a newvalue.Memory PanelThe memory panel displays the currentvalues of the data EEPROM or SFR orscratchpad memory areas. For PICAXE chipsthat also store the program in the dataEEPROM (08, 08M, 14M, 18, 18M, 20M)the memory locations currently used by theprogram are indicated with a ‘P’.Serial Output PanelThe serial output panel displays output fromthe serout and sertxd commands. Debugcommands are not simulated because thevariable values are always available in the‘variables’ panel.revolution(c) Revolution Education Ltd. Email: info@rev-ed.co.uk Web: www.rev-ed.co.ukVersion 6.9 07/2009All rights reserved.55
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PICAXE Manual Section 1 - TechnoPujades - Free

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