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18

LDS4 Colour Display System

© 2009 General Engine Management Systems Ltd.

LDS4 Colour Display System

button to show the bit string editor:

The priority determines the order in which the bitmasks are evaluated with low numbers being a
higher priority. This ensures that if two bitmasks match, only the highest priority output string is
returned from the sensor.

4.13

Alarm Sensor

The output from an alarm sensor is either zero or one. An output of one indicates that the alarm
has been triggered (the condition is true), zero indicates no alarm has been triggered (the
condition is false). One sensor can test two different inputs against limits with Boolean logic to
determine its output. If more than two inputs are required it is possible to 'chain' alarm outputs
together.

Summary of Contents for LDS4

Page 1: ...ration Manual Editor LDS4 Editor Hardware LDS4 LDS4 intelligent AMOLED colour display system Author Jon Mansfield Date 14 04 2010 18 07 Document Name LDS4 Colour Display System Document Details 06x05 v3 42 ...

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Page 3: ...ory Part 3 Creating and Editing Display Setups 8 8 1 Creating a New Display Setup 8 2 Opening and Saving Setups 9 3 Uploading a Setup to a Display 9 4 Updating Colour Display Firmware 9 5 Defining the Data Source 9 GEMS Logger Sources 10 External CAN Sources 11 CAN Bus Speed 11 CAN Message Masks 11 Serial Sources 11 6 The Components of a LDS4 Editor Setup Part 4 The Setup Editor 13 13 1 Gain 14 2 ...

Page 4: ...ing Message Input Editor 24 Maths Input Editor 24 Bitmap Selector Input Editor 24 If Input Editor 25 Case Input Editor 25 23 Predefined Outputs 25 Screen Select 25 Analogue Outputs 25 Speed Outputs 25 Lap Time Outputs 26 CAN Status Outputs Part 5 Display Screens 27 27 1 The Monitor Screen 27 2 Setting Screen and Default Colours 27 3 Adding a Gauge 28 4 Selecting a Gauge 28 5 Moving a Gauge 28 6 Re...

Page 5: ... 4 GPS and Onboard Sector Analysis Setup 39 Using Onboard Sector Analysis 40 5 LDS4 Brightness 40 6 LDS4 Low Side Driver and PWM 40 7 LDS4 Calibrated Analogue Transmit 41 8 LDS3 Slave Display Setup Part 8 Transmitting CAN Data 43 Part 9 Co Driver Functionality 45 45 1 Enabling Co Driver Functionality 46 2 Special Co Driver Outputs 47 3 Special Co Driver Sensors 47 4 Co Driver Buttons and Events Pa...

Page 6: ...eral Engine Management Systems Ltd LDS4 Colour Display System 55 3 Setup 56 4 Edit 56 5 Gauge 56 6 Colour 56 7 Config 56 8 Window 57 9 Help Part 12 Appendix B Example Sensor Calibrations 58 58 1 Wheel Speed 58 2 Distance 58 3 Gear Position ...

Page 7: ...is used to indicate text that should be typed in by the user 1 2 Installing LDS4 Colour Display System LDS4 Editor is distributed on CD ROM To install Insert the disk in the CD drive The installation wizard should start automatically If it does not Click on the Windows Start menu and select Run In the Open box type X LDS4 EditorSETUP EXE where X is the drive letter of your CD drive and click OK Th...

Page 8: ...aw from centre mode which could leave bars unerased Numeric value gauge supports a warning colour and warning value which makes the gauge change colour when the value is exceeded Added day month year display formats Added support for extended ASCII characters so eg French German Spanish accented characters are now displayed correctly Added 20Hz and 50Hz CAN output rates Fixed bug where value and d...

Page 9: ...ort on Serial 1 and serial data stream support on Serial 2 05x02 11 02 09 Added a fast CAN transmit this sends out the first 4 analogue inputs at 1kHz big endian on message 0x700 Analogue 3 is mapped as up down button and can be used as a push button page select 05x03 12 02 09 Added support for real time clock in LDS4 Issue B boards reduced the number of available CAN messages to 31 to protect the...

Page 10: ... it can fall outside of this range if the calibration is incorrect 05x08 05 05 09 Changed the LDS4 fast CAN Tx to send A2 and A3 on words 1 2 3 and 4 of the fast CAN Tx message 05v10 12 05 09 LDS4 calibrated analogues are filtered over 1 sec when in calibration mode 05x11 02 06 09 Fixed bug in TimeFilter output that could cause erroneous values to appear at certain update rates Add 2ms delay after...

Page 11: ...in a dedicated driver Added support for LDS4 AMOLED based drivers screen 04x01 28 10 08 Added a one time reset of speed inputs on first interrupt enable This fixes a problem with the speed inputs where they do not always work in 04v00 Changed AMOLED brightness settings to work with OTP off 04v02 21 01 09 PI System 3 Serial Comms support added Added OKI CAN support LDS4 rev A boards currently missi...

Page 12: ...equires 06x02 firmware or later v3 39 10 12 09 Fixed bug which could cause spurious split lap times to be added to the setup Added support for 50Hz and 20Hz CAN transmit rates Improved checking of warning message outputs Added support for user configurable fast analogue can Tx Added support for CAN status flag messages Added alarm mode for value gauge Added day month year formatting for time outpu...

Page 13: ...uts when the file is opened subsequent calls such as from the setup editor do not trigger the checks This improves the editor speed Updated About Box logo to new GEMS colour scheme Removed the D and I short cut keys on the Insert and Delete buttons as these could cause accidental deletion of items Added support for LDS4 analogue calibration mode for the first four analogues transmitted on the fast...

Page 14: ... or other manufacturer via the CAN or serial link In this case the Data Source is defined manually See Defining Data Sources for more information on choosing and using the data source To create a new display setup Select File New with GEMS connection or File New with external connection as appropriate If using GEMS Connection select a logger setup stu file to act as the basis for the display setup...

Page 15: ...r Display Firmware As part of the continuing development process from time to time GEMS will release new versions of the LDS4 firmware To upload the new firmware Copy the firmware file into the LDS4 Editor folder Connect the colour display to your PC using the USB link Select Config Upload Firmware The upload process starts Do not switch the display off during the upload process as this may corrup...

Page 16: ...e where the display is connected to a non GEMS logger ECU via the CAN To setup or change the external CAN source of an open setup select Setup Edit External Source The CAN setup dialog will be shown The name for each CAN channel is specified along with the CAN arbitration code CAN Mask and arbitration code size i e standard 11 bit or extended 29 bit The CAN Mask determines which of the 8 bytes in ...

Page 17: ...ard NMEA GPS serial stream If using a GEMS serial stream it is necessary to set the serial stream properties these can be imported from a GWv4 sts file using the Import button The serial data stream Tx from the ECU must be connected to the Serial Rx 1 pin on the LDS4 3 6 The Components of a LDS4 Editor Setup A LDS4 Editor setup consists of four logical components Sources outputs sensors and gauges...

Page 18: ...h a bar tacho gauge which displays the RPM and the oil pressure alarm output The oil pressure is obtained in a similar manner and passes its output to a bar gauge which displays the oil pressure and the oil pressure alarm output The oil pressure alarm output uses the alarm sensor and its two inputs to generate an output used by the warning gauge to signal low oil pressure eg Oil Pressure is less t...

Page 19: ...e Gain is a historical term used in GEMS logger setups to perform an 8 bit bitmask on a 16 bit number It should not generally be used in new sensors in a LDS4 Editor setup instead the use of a bitmask sensor is more appropriate The gain should only be used in imported logger setups Similarly Scalar and Function Table sensors have min and max columns These are not required or used by LDS4 Editor bu...

Page 20: ...Function Table Sensor The function table sensor is used when a non linear signal needs to be processed The function table sensor applies a gain if specified to the input and looks up the input in the function table to produce the appropriate output If the input falls between two values linear interpolation is used to derive the output value If signed is ticked and the gain is not set to NONE the i...

Page 21: ...manner to the minimum sensor but returns the maximum value of the primary input 4 6 Average Sensor The average sensor works in a similar manner to the minimum sensor but returns the average all values of the primary input received since the last reset 4 7 Rate Filter Sensor An output using a rate filter checks that the rate of change of the input value does not exceed a specified amount If the rat...

Page 22: ...utput will update as fast as possible Rolling period Specifies the time period over which the rolling function is calculated If zero is specified the rolling period is set to the update period Rolling function Specifies how the value produced from the output is calculated Maximum The output is the maximum value occurring during the last rolling period milliseconds Minimum The output is the maximum...

Page 23: ... to determine gear position while the upper 4 bits determine diff mode The bitmask is specified as the sum of all the bits being masked 4 12 Bit String Sensor When an input has bits that are set dependant upon a mode in the ECU it can be useful to convert this into a text string output The bit string sensor takes the input and compares it with defined bitmasks The bitmasks are compared in order of...

Page 24: ...ks match only the highest priority output string is returned from the sensor 4 13 Alarm Sensor The output from an alarm sensor is either zero or one An output of one indicates that the alarm has been triggered the condition is true zero indicates no alarm has been triggered the condition is false One sensor can test two different inputs against limits with Boolean logic to determine its output If ...

Page 25: ...e formatting see Value Formatting in the gauge reference section If all the warning inputs are zero the output string is empty If only one warning input is non zero the appropriate warning is displayed If multiple warning inputs are non zero the appropriate warning labels are displayed in turn with each one being displayed for around a second The On Time Off Time and Min On Time can be used to aff...

Page 26: ...rential sensor is used to create an output that is the differential of an input with respect to time The Minimum Differential Period is a value between 0 1 and 2 seconds and is the number of points the differential is calculated over Higher numbers will produce a smoother more filtered output 4 17 Bitmap Selector Sensor The bitmap selector sensor is used to show different bitmaps depending on the ...

Page 27: ... is not a new output converting the input into units per second must be created and this output used as the input to the integrator For example if a distance in meters is to be integrated from a speed in kph an intermediary output scaled in meters per second is created by multiplying the kph output by 1000 3600 0 277777778 The integrator sensor is a pre defined sensor that does not require any con...

Page 28: ...gauges or other outputs An output obtains information from other outputs or serial inputs The output that it produces is determined by the sensor that it uses To set up a new output Click the Insert button in the Outputs tab Enter the name of the new output This should describe what the output actually generates Select the sensor to be used by the output from the drop down list Define the inputs t...

Page 29: ...rm input editor is shown when setting the inputs for an output using an alarm sensor It shows the conditions specified in the sensor and allows the inputs used to be assigned 4 22 3 Warning Message Input Editor This editor is shown when setting the inputs for an output using a warning message sensor It shows the warnings specified in the sensor and allows easy configuration of the warning trigger ...

Page 30: ...ecified 4 22 5 Bitmap Selector Input Editor This editor is shown when setting the inputs to an output using a bitmap selector sensor The value input specifies the input used to select the bitmaps The bitmaps used are selected from the other combo boxes To add a new bitmap select Add New Bitmap from the combo box Clicking the reload button will reload the appropriate bitmap from the file if it stil...

Page 31: ...f you have used a different page select switch this function table may need to be recalibrated 4 23 2 Analogue Outputs The LDS4 has 7 analogue inputs named A1 Raw A2 Raw etc The inputs have 12 bit resolution with a range of 0 to 4095 4 23 3 Speed Outputs LDS4 has 4 speed inputs and these are shown in the setup as outputs called Speed 1 Raw Speed 2 Raw etc The raw speed outputs are scaled in Hz 4 2...

Page 32: ...it timing to work 4 23 5 CAN Status Outputs The CAN 1 Status output can be used to display the state of the current CAN port by setting it as the input to a Variable String gauge The following status messages will be displayed CAN 1 OK The CAN bus is working correctly CAN 1 DISABLED The CAN bus has not been setup or is not present CAN 1 BUS OFF A serious error has occurred on the CAN bus this may ...

Page 33: ...rage output added to the monitor screen is preserved even when the screen is powered off Consequently it is important to make sure a reset method is set for such outputs added to the monitor screen Select Display Monitor to view the monitor screen setup Add the outputs to be continuously monitored to the list 5 2 Setting Screen and Default Colours The Colour menu allows the default colours to be s...

Page 34: ...osition To move a gauge using the edit window Show the Gauge Property window by right clicking on the selected gauge or by selecting it from the Edit menu Change the values of the x position and y position properties to appropriate values This is particularly useful in aligning different gauges 5 6 Resizing a Gauge A gauge can be resized using either the mouse or the edit window To resize a gauge ...

Page 35: ... menu Using the mouse Select the gauge Click the right mouse button To edit a gauge using the menu From the Edit menu select the name of the gauge to edit The gauge property editor is specific to the type of gauge being edited See the Gauge Reference section for full details 5 9 Using Copy and Paste The copy and paste feature is used to copy gauges or entire screens between screen pages or setup f...

Page 36: ... number of graticules Label Font The font used by the gauge Label Font Size The font size used by the gauge Label Format Determines how numbers are formatted in the gauge See the Value Formatting section for more information X Position The left most position of the gauge Y Position The top most position of the gauge X Size The width of the gauge Y Size The height of the gauge Background Colour Col...

Page 37: ...on of the colour display firmware vs Shows the serial number of the display vu Shows the usage on time of the display in hours vr Shows the reset counter the number of power on events since the last setup upload 6 3 Bar Gauges There are four types of bar gauge rectangle and triangle shaped bars in either horizontal or vertical orientation A bar contains a number of graticules that divide the bar u...

Page 38: ...oloured regions 6 5 Text Label Gauge The Text Label gauge is a static gauge it has no input that is used to label other gauges and provide static information to the user The text displayed in the gauge is set in the Text property The Direction property is used to specify the direction in which the text is drawn in Right specifies left to right Down specifies top to bottom 6 6 Variable String Gauge...

Page 39: ...nput value is greater than or equal to the Warning Limit 6 9 Progressive Limit Gauge The Progressive Limit gauge is typically used to signal an approaching rev limit by means of several boxes that change colour as the rev limit approaches This gauge has the following special properties Box Count is the number of boxes in the gauge Box Size is the width and height of the box in pixels Limiter Start...

Page 40: ...uts to move a cross hair around a box The cross hair gauge has the following special properties XInput YInput specify the inputs for the X and Y axes of the gauge X Minimum Y Minimum specify the starting values for the X and Y axes X Maximum Y Maximum specify the end values for the X and Y axes Cursor Size is the size of the cross hair cursor Background Bitmap can be used to specify a bitmap that ...

Page 41: ...play hardware The round tacho bitmap gauge has the following special properties Background bitmap the background gauge image X Centre Y Centre The centre of the gauge from which the logical centre of the pointer will be drawn Centre Offset The number of pixels from the logical pointer centre at which the pointer will be drawn Length The length of the pointer Start Degrees The number of degrees fro...

Page 42: ...tom 11 bits of a 16 bit standard CAN code or the bottom 29 bits of an extended CAN code 16 32 bit CAN code assumes the arbitration code for the message occupies the top 11 bits of a standard CAN code or top 29 bits of an extended CAN code This is used for compatibility with AN82527 The screen page should be encoded in byte 3 the 4th byte of the specified CAN ID For example 00 00 00 00 00 00 00 00 ...

Page 43: ...ended of the button message and the CAN arbitration code of the message Note that page select and button source messages must be sent to the same CAN port The format of the CAN message code can be set to either 16 32 bit or 11 29 bit using the radio button at the foot of the window 11 29 bit CAN code assumes the arbitration code for the message occupies the bottom 11 bits of a 16 bit standard CAN ...

Page 44: ... 3 Odometer Setup LDS4 has a built in odometer function This is an internal counter backed up to non volatile memory that cannot be reset it is set to zero when the unit is built To set up the odometer choose Setup Odometer Select an output that is road speed km per second LDS4 Editor will automatically create an output called ODOMETER which is scaled in km and can be displayed on the screen 7 4 G...

Page 45: ...n GPS Heading The heading in degrees GPS Latitude The latitude in minutes and fractions of minutes Negative is South GPS Longitude The longitude in minutes and fractions of minutes Negative is East GPS Sats The number of satellites seen by the GPS receiver GPS Speed The speed in kph 7 4 1 Using Onboard Sector Analysis Onboard Sector Analysis OSA allows the user to use GPS to simulate split beacons...

Page 46: ...reate a maths output whose equation is the brightness number required and use this as the LDS4 brightness output Note brightness levels 6 and 7 of the coarse mode brightness are overdriven for extra brightness but this results in a loss of image contrast 7 6 LDS4 Low Side Driver and PWM The LDS4 has a low side driver switched to ground that can be used to drive a relay or other item that is connec...

Page 47: ...mode output goes high the shift lights will pulse outside to in at the rate of once per second to indicate that launch has been selected Once the sequence has finished the normal shift light function will be restored Each of the elements of the LDS3 can have it s brightness set independently This allows it to be customised for driver preference 0 is off and 15 is maximum brightness The display als...

Page 48: ...our Display System 2009 General Engine Management Systems Ltd LDS4 Colour Display System In road mode the remaining shift lights operate as before the the second light will trigger at 5500 rpm in the above example ...

Page 49: ...plement number Byte Unsigned Sends the output as an 8 bit unsigned number Short Signed Big Endian Sends the output as a 16 bit twos complement number with the most significant byte in the left most byte Short Signed Litle Endian Sends the output as a 16 bit twos complement number with the most significant byte in the right most byte Short Unsigned Big Endian Sends the output as a 16 bit unsigned n...

Page 50: ...loating point number Hour Sends the hour part of a time output as a byte Minute Sends the minute part of a time output as a byte Seconds Sends the seconds part of a time output as a byte SERIAL NUMBER Sends the display serial number in 16 bit big endian format VERSION Sends the display firmware version as a 6 byte ASCII string for example 06v00 If the firmware supports the GEMS SMS1 text messaging...

Page 51: ...tton inputs either from an analogue input or via the CAN See Configuring the Button Press Mechanism for more information 9 1 Enabling Co Driver Functionality To enable co driver support select Setup Co driver Setup to show the co driver setup screen Check Enable co driver functionality to enable co driver support The other options in this dialog box define the basic inputs for the co driver functi...

Page 52: ... All lap outputs are initially unfrozen Note that changing the calibration factor while a lap output is stopped does affect the frozen value For example at the start of a stage the Total Trip and Total Trip Lap outputs are both zero and Total Trip Lap is unfrozen The car launches off the line and both outputs increase accordingly A kilometre into the stage the Total Trip Lap is frozen The Total Tr...

Page 53: ...tic ETA can be shown over the distance 9 4 Co Driver Buttons and Events The co driver display supports 4 buttons to allow the co driver to control functions on the display These buttons are nominally called the Reset Select Up and Down To define the behaviour of these buttons select Setup Co Driver Events to show the Events editor The events dialog has two tabs an Action tab which allows the behav...

Page 54: ... reset value for the interval trip meter by the Interval Trip Resolution specified in the co driver setup IntTripRaw Reset Resets the interval trip meter to the reset value Open Screen n Changes from the current page to page n RawFzCDTrip start Unfreezes Countdown Lap RawFzCDTrip stop Freezes Countdown Lap RawFzIntTrip start Unfreezes Interval Trip RawFzIntTrip stop Freezes Interval Trip RawFzTota...

Page 55: ...Co Driver Functionality 2009 General Engine Management Systems Ltd TotalTripRaw reset Resets the total trip to the reset value Any countdown or toggle outputs created will also be added to the effects list ...

Page 56: ...unlight Fully customisable with What You See Is What You Get WYSIWYG Windows editing software Boots in less than one second 24 pages selectable by input pot or CAN 16 Gauge types inc Bar Tacho Rev Lights Variable text Beacon input for lap timing Screen 480x272 pixel resolution true colour Screen viewable area 95mm x 54mm 2 Speed inputs Analogue inputs number dependent on connector type 1 CAN bus 2...

Page 57: ...wer 8 Beacon 9 Speed1 10 Analogue 1 11 Analogue 3 12 Analogue 5 13 Analogue 7 14 0V Power 15 CAN_L 16 USB Data 17 Gnd 18 Serial RX1 Use for data stream or NMEA GPS 19 Low side drive can be configured as a PWM output by special request 20 Gnd 21 Speed2 22 Page switch 12 position switched 1k resistor network to ground 23 Analogue 2 24 Analogue 4 25 Analogue 6 10 1 2 LDS4 Souriau Case Drawings Side F...

Page 58: ...de connector AS DD606 09PN HE Pin Out Connector 1 1 12V Power 2 CAN_H 3 USB Data 4 USB PWR 5 Beacon 6 0V Power 7 CAN_L 8 USB Data 9 Gnd Connector 2 1 5V Sensor power 2 Speed 1 or Analogue 7 1k pull up 3 Analogue 2 470k pull up 4 Analogue 4 470k pull up 5 Low side driver can be configured as Serial data stream Receive by special request 6 Gnd 7 Speed 2 or Analogue 8 1k pull up 8 Analogue 1 use for ...

Page 59: ...Where the pin out shows dual Speed analogue functionality both inputs are connected to the pin Thus if an analogue signal is connected to the pin the analogue input will make sense where the speed won t and vice versa 10 2 2 LDS4 AS case drawing Front Side Rear ...

Page 60: ...9 General Engine Management Systems Ltd LDS4 Colour Display System 10 3 USB Pin Out USB Pin out If making your own USB cable it is important to make sure the Data and Data wires are twisted together for the full length of the USB cable ...

Page 61: ...eens in the setup 11 3 Setup The Setup menu allows the non visual aspects such as CAN setup or scaling factors of the colour display to be set up Display Shows the display setup editor where the outputs used in gauges on the screen pages are created and edited Controller Allows the CAN codes on which page select and button source messages are received to be specified Co Driver Allows the co driver...

Page 62: ...f grid lines 11 6 Colour The Colour menu allows the default colours to be specified These are used whenever a new gauge is added to a screen The default colours can be overridden in the individual gauge properties Screen Sets the background colour of the current screen Warning Default colour of a warning bar when it is triggered Gauge Background Default background colour of a gauge Gauge Line Defa...

Page 63: ... A Menu Commands 2009 General Engine Management Systems Ltd 11 9 Help Displays the help manual index and contents Selecting About from the Help menu will show the version information for LDS4 Colour Display System ...

Page 64: ...tres per second mps rps wheel circumference kph mps 60 60 1000 The equations can be simplified to the following kph speed input value circumference 3600 teeth 1000 As an example consider a wheel with 30 teeth on the sensor wheel and a circumference of 1 8m The scalar required to convert the raw speed input value in Hz to kph is as follows scalar 1 8 3600 30 1000 0 216 12 2 Distance A distance in k...

Page 65: ...t between the current gear and the previous gear The second entry will be the half way point between the current gear and the next gear This ensures that the function table will only return a whole number between 0 and 8 For example consider a gear position setup with the following A D values at each position Gear A D Value R 10 N 100 1 200 2 300 3 400 4 500 5 600 6 700 The function table would be...

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Page 67: ...o driver buttons 47 enabling 45 events 47 functionality 45 sensors 47 special inputs 46 Colour menu 56 Colours 27 Config menu 56 Configuring button press 37 Configuring page select 36 Copy and Paste 29 Creating setups 8 Cross hair gauge 34 D Data source defining 9 external CAN 10 GEMS 9 serial 11 Default colours 27 Defining the data source 9 Deleting gauges 29 Differential sensor 20 Display menu 5...

Page 68: ... Historical graph gauge 34 I If output 24 If sensor 22 Installation 1 Installing LDS4 Colour Display System 1 Installing USB Drivers 1 Integrator sensor 21 Introduction 1 L Lap time outputs 25 Lap timing 25 LDS3 slave display 41 LDS4 Autosport case drawing 53 Autosport pin out 52 hardware 50 Souriau case drawing 51 Souriau pin out 50 LDS4 brightness 40 LDS4 fast analogue CAN Tx 40 LDS4 high side d...

Page 69: ...tups 8 Scalar sensor 14 Screen adding gauges 27 colours 27 copy and paste 29 deleting gauges 29 editing gauge properties 29 monitor 27 moving gauges 28 resizing gauges 28 selecting gauges 28 Selecting gauges 28 Sensor alarm 18 average 15 bit string 17 bitmap 20 bitmask 17 case 21 differential 20 ECU string 17 function table 14 15 gain 13 if 22 integrator 21 limit filter 15 maths 19 maximum 15 rate...

Page 70: ...2 Text message gauge 32 Time filter sensor 16 Toggle sensor 22 Transmitting CAN data 43 U Updating firmware 9 Uploading setups 9 USB drivers Installing 1 V Value formatting 30 Value gauge 33 Variable string gauge 32 W Warning message output 23 Warning message sensor 19 Wheel speed calibration 58 Window menu 56 ...

Page 71: ...Crabtree Road Egham Surrey TW20 8RN UK T 44 0 1784 470525 F 44 0 1784 47052 www gems co uk ...

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