Logic User's Guide Contents
Contents
1. Saleae User Guide 1 1 5 Logic User s Guide Hello and thanks for using Logic We hope this guide will answer any questions you might have but if not please do let us know at support saleae com Happy Debugging Contents MO SSC a reese ventana eases A 1 PENSE AM EIT EIS SO TAN acca cutee ce E ns aesevou dice ocseauanossedacecsssvanersounoeee 3 Installation ON Windows amp MaC cccccccccccssssssccccccceaessseeeccceeesssaeesseeeceeeessauasseeeeeessaaauseeeceesessugaasgeeseeeess 3 USE a ENON LN IK e so saasencecen E 3 veme E SO WAN acoder co steer de ecenet ceca tnesaaarahescanicenestaeecotaecauesanucesesacect R 4 UNC TIDS earns cca ects E E weet deanenevtanb tahowsbetasdeaceeeteunttanssepeteeucnees 4 SUMS TO eenn E 4 NEV IG ENG the data display sche iarenstte ted once aint E R ne aunctoseevannotenaneateentonceven 5 TIMING Measurements ccccscceseccseecceccecceseccseccseccseccseecseecesecessceseceseceeceseceeetseeseeeteesseesseetsessetseetaeetes 5 Pere Mie DMNA IVINS vatican sense cacecnatecceh savetaae teceecacaseonraresdosssanenssneecovahanseateuseastseeseendaeosiecenetteseasoeeaace 6 Saving and Opening a SESSION cccccessecessecccescecaeccceececenececeesceeeescessecesseeceeceseeesseeeessescessseceneneeees 6 EO CNS DATI ccnp nieces cient bien savctlied E E E E E AE ceresuneesonee 7 Se Cl CS SINS css setesce caresses eestnoteneccane E 8 Selecting the Display Radix i e Hex Decimal etC ccccccccessseccccc2. alled Installation on Linux 1 Download the latest version from our site here here http www saleae com downloads 2 There is no installer you can unzip the application anywhere you like perhaps your home folder or your desktop You can start using it on your desktop and move it later if you like 3 Double click the Logic executable to start the program 4 If you like make a link to the Logic application for your desktop or application menu or dock 5 Note that wherever you decide to put the logic application it must all stay together in the same folder structure and it must have write permissions 6 When connecting to Logic you may get a message from the application that it doesn t have permissions to connect to Logic If this happens run the install_ driver script in the application s Driver folder 32 bit vs 64 bit Please choose the version appropriate for your Linux Distribution 64 bit Users Please note that as of 1 1 5 you won t be able to load sessions saved with other versions platform distributions of the Logic software However other Logic software distributions will be able to load sessions that you save Sorry for the trouble we ll get this fixed 3 Copyright 2011 Saleae LLC All Rights Reserved Saleae User Guide 1 1 5 Using the Software Quick Tips e Almost everything has tooltips that offer some explanation of what it does e You can use the arrow keys to pan side to side and zoom in a
3. can export each bit in its own column o You can export every sample or only samples that have changed Saving Screenshots e You can take a screenshot of all or part of the application and either save it to a file or copy it to the clipboard You can find this in the Options menu or use the keyboard shortcuts Save Screenshot gt To File Ctrl I To Clipboard Ctrl Shift I Save Screen Region gt 8 Copyright 2011 Saleae LLC All Rights Reserved Saleae User Guide 1 1 5 Selecting the Display Radix i e Hex Decimal etc e Use this Options menu item or the keyboard shortcuts to quickly toggle between the different display modes Options Open Session Ctri O Save Session gt Export Data Ctrl E Save Screenshot gt Save Screen Region gt us Display in Hexadecimal gt Binary Ctrl B Decimal Ctrl D Hexadecimal Ctrl H Ascii Ctrl A Ascii amp Hex Ctrl Shift A Preferences This ts the latest version 1 1 5 User s Guide Give Feedback Report Issue Using Protocol Analyzers e To add a protocol analyzer select one from the menu in the Analyzers panel v Analyzers CAN RC 2S PCM 1 Wire Async Serial SPI UNI O e Protocol analyzers can share inputs with other analyzers This can be useful in some cases such as SPI e After you add or edit an analyzer it immediate runs against any data you have collected e To export data from an analyzer press the small f
4. eeeseccccceeeeccceeensecceeseeeeeeeseaeneeeess 9 Using Protocol Analyzers sarsie EE 9 Data Integrity cqenesticnenitroncoadeastnecurertonpievtoiecnidacnwscudaswieneusconapucdeneaducntcunurinnitipeicussadinacteneiaodsacriuroaudradeoaunesncesie eet 11 Maximum ample RNE aa 11 1 Copyright 2011 Saleae LLC All Rights Reserved Saleae User Guide 1 1 5 Safety and EGUIDMENT PROTECTION sascausdeansstacsvaamnmenentavacdeacavodasssetaunteskencesteusananasssuadohnadennseatoreeneacarieteaneecest 12 CONICET ca aeoeuaebenemsipnaap nec anadaeucbiauisentnaicatanatiaubaaneeeatalens 13 2 Copyright 2011 Saleae LLC All Rights Reserved Saleae User Guide 1 1 5 Installing the Software Installation on Windows amp Mac Download the latest version from our site here http www saleae com downloads Double click amp install like any other application Note Windows XP Users Please download the 32 bit version of the software Note Vista amp Windows 7 Users Please download the either 32 bit or 64 bit installation depending on your version of Windows You can find out by right clicking Computer in the start menu and choosing Properties System Rating 555 Windows Experience Index Processor Intel R Core TM i7 CPU 860 2 80GHz 2 93 GHz Installed memory RAM 2 00 GB System type 64 bit Operating System Pen and Touch No Pen or Touch Input is available for this Display OS X Tiger Users The application needs to be unzipped before it can be inst
5. ick on this item and select Set Priority gt High o Linux From the command line navigate to the folder where the Logic executable is Type nice n 3 Logic Lookup nice for more information 11 Copyright 2011 Saleae LLC All Rights Reserved Saleae User Guide 1 1 5 Safety and Equipment Protection The primary concern for safety and equipment protection is the ground return path Logic s ground input is essentially shorted to the ground of your computer and your computer s ground is likely connected to earth ground Therefore Logic s ground line has the potential to provide a high current ground return path to a device under test Logic may not be used with DUTs devices under test which are not electrically isolated from MAINS i e wall power DUTs which are battery powered or USB powered from the same computer as Logic are acceptable DUTs powered by AC adapters which have only 2 prongs and do not have an earth ground connection such as most wall warts usually provide MAINS isolated power and are acceptable For other DUTs isolation can typically be achieved through the use of a dedicated isolation transformer such as those made by Tripp lite When using USB powered DUTs special care should be taken to avoid connecting USB sourced power to Logic s ground as this provides a short circuit return path While both Logic and USB ports are designed to survive a short circuit event care should be taken to m
6. ile icon next to it center button v Analyzers CAN Export as text csv file 9 Copyright 2011 Saleae LLC All Rights Reserved 10 Saleae User Guide 1 1 5 If you need to change the display format radix of a particular analyzer you can do this from the Analyzer settings menu v Analyzers CAN Edit Analyzer Display using Global Settings gt Y Global Settings Binary Decimal Hexadecimal Ascii Ascii amp Hex Copyright 2011 Saleae LLC All Rights Reserved Saleae User Guide 1 1 5 Data Integrity Logic may not be able to achieve a particular sample rate see the next section but it will never present data with samples missing By design it stops and notifies you as soon as any data is lost Maximum Sample Rate Generally speaking Logic is able to achieve sample rates of 24MHz when no other devices are on the USB host and your computer is responding sufficiently quickly However if the USB is servicing other devices or the computer is performing in a latent manner a smaller sample rate such as 16MHz or 12MHz may be the fastest achievable The reason for this is as follows Logic uses USB 2 0 and uses the USB transfer type known as Bulk While this transfer type has the largest theoretical average bandwidth significantly larger even than the 24 MB s needed by Logic it also has the lowest priority This means it may be bumped for other USB traffic from other devices The second issue is
7. inimize its likelihood As an alternative to isolating the DUT from MAINS you can isolate the PC instead such as by using a Laptop running off of battery power You must make sure the Laptop is not connected to other grounded equipment such as a computer monitor At this time there are no cost effective isolation products for 480Mbit USB High Speed USB that we are aware of There fiber optic based solutions that cost around 1000 12 Copyright 2011 Saleae LLC All Rights Reserved Saleae User Guide 1 1 5 Contacting Us You re always welcome to contact us about anything support saleae com is typically the best way to reach us or online at http www saleae com su 13 Copyright 2011 Saleae LLC All Rights Reserved
8. n them This option will only appear in the list if two timing markers have already been placed e Export Format Binary Export Format Binary Settings Output data for each sample v Output each sample in 8 bit byte Z 7 Copyright 2011 Saleae LLC All Rights Reserved Saleae User Guide 1 1 5 o You can select if you want data outputted for every sample or only for samples that are different than prior samples Note that if you export only changes in the data a 64 bit Sample number is written before each sample in the file o If you aren t exporting all of the channels you can choose to leave the bits in their original channel locations or to have them shifted right to fill any unused positions o You can choose to export each sample as an 8 16 32 or 64 bit word e Export Format VCD Export Format 4 Ved A o VCD stands for Value Change Dump and is a common format for digital data e Export Format CSV Export Format G CSV Settings 2 Include column headings Comma delimited Use timestamps s Output one column for every bit Output one row per change Choose this format to export data as comma or tab delimited human readable text You can optionally include column headings for the data You can use sample number i e 1 2 3 4 or timestamps i e 00123s to specify the time a sample represents This occupies the first column o You can combine all the channels into a single number or you
9. nd out e Most functions have keyboard shortcuts described in their menu item or their tool tip Using the Trigger e Tip mouse over the trigger buttons for a description e The trigger looks for a single edge To use the trigger there must be one edge specified 0 ChannelO SMe gt e You can also specify that other inputs must be in particular states high or low when the edge occurs 0 ChannelO SA T 1 Channel 1 pam 2 Channel2 SS E Zn e Pre trigger data will be collected for the region of time before the trigger is found to the extent the trigger is not immediately found You can configure this amount under Options gt Preferences Pre trigger buffer size 10M samples default v e The time where the trigger is found is time zero in the display 0 0 ms 0 9 ms 0 Channel 0 T 1 Channel 1 pam 2 Channel2 9 ESR 4 Copyright 2011 Saleae LLC All Rights Reserved Saleae User Guide 1 1 5 Navigating the data display Click and drag the display to move it Use the scroll wheel on your mouse to zoom in and out Alternatively use the arrow keys to zoom and pan The keys also zoom To jump to next move your mouse to and click the button that will appear near at the ends of the graphs You can use the keys N next and P previous as well this applies to the channel that was last used by the mouse 0 3 ms Y Measurements Jump to next edge N dihadi Pe
10. riod 5 Timing Measurements Tip Move your mouse over each measurement label for a description The time elapsed between the selected three successive signal transitions Width The time between the selected two successive signal transitions Period The time elapsed between the selected three successive signal transitions Frequency The frequency computed by dividing one 1 by the time elapsed between the selected three successive signal transitions Duty Cycle The of time the signal is high 1 during the selected three successive signal transitions Byte The numerical representation of all 8 channels combined into one byte at the specified location T1 The absolute time specified by the location of the T1 timing marker T2 The absolute time specified by the location of the T2 timing marker T1 T2 The time elapsed between the timing markers To show or hide particular measurements use the settings button Copyright 2011 Saleae LLC All Rights Reserved Saleae User Guide 1 1 5 Y Measurements Show Width Show Period Show Duty Cycle Width Period Frequency Ti 77 0000000 us T2 0 164000000 ms T1 T2 87 00 us Show Frequency Show Byte Show Timing Markers v Analyzers Placing Timing Markers Single click the T1 or T2 label Show Error Move your mouse to the desired location Note that you can still pan and zoom Single click to place the marker Your mouse must not be mo
11. that Logic has very limited device side memory Specifically it has x4 512 byte buffers These buffers must be emptied by the USB in such a way that they never all become full at the same time If this happens the logic software will report that the sample rate could not be maintained This means that even if on average which would normally be the case the USB can give Logic at least 24 MB s it must not prioritize other devices on the USB for so much time that Logic s small buffer would overflow For this reason Logic can t guarantee that it will operate at its maximum 24MHz as this is contingent on a number of factors including computer performance USB bandwidth availability and latency other drivers that may be using the USB etc To maximize the sample rate possible on your computer try the following e Make sure that no other applications are consuming significant CPU time e Make sure you have enough free RAM so that the OS will not have swap ram to the hard drive This will be too slow e Try connecting Logic directly to your computer instead of through a USB hub e Make sure other devices on the USB are minimally active i e not webcams hard drives etc e Try disconnecting other peripherals from the USB or switching Logic to a port serviced by a different host controller e Increase the process priority of the Logic software o Windows From the Windows Task Manager select the Processes tab and find the Logic process Right cl
12. ving when you place the marker To move the marker after it has been placed click it To cancel placing a marker right click or press the escape key Saving and Opening a Session To save a session that includes data press CTRL S CMD S on a Mac or select this function from the Options menu To save a session that contains only settings press CTRL SHIFT S CMD SHIFT S on a Mac or select this function from the Options menu To open a session of any type drag it into the software or press CTRL O CMD O on a Mac or select this function from the Options menu Ctrl Shift S Settings amp Data Ctrl S Width Period Frequency Ti 77 0000000 us T2 0 164000000 T1 T2 87 00 us H H v Analyzers Ctrl 0 Save Session gt Open Session Export Data Ctri E Save Screenshot Save Screen Region Display in Hexadecimal Preferences This ts the latest version 1 1 5 User s Guide Give Feedback Report Issue Copyright 2011 Saleae LLC All Rights Reserved Saleae User Guide 1 1 5 Exporting Data To export data select Options gt Export Data CTRL E Channels to Export Export all channels Z Samples to Export Export Format Csv CSV Settings e Channels to Export Select which channels you would like to export e Samples to Export Select the time period over which you would like to export samples o Tip If you are using timing markers you can export just the data betwee
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