iq switch ? proxsense ? series copyright ? azoteq (pty) ltd 20 10 . IQS316EV01 evaluation kit user manual page 1 of 8 all rights reserved. revision 1.1 january 2012 IQS316EV01 evaluation kit user manual iq switch ? - proxsense ? series 1 introduction this user guide describes the operation of the IQS316EV01 evaluation kit. the ev- kit consists of three iqs316 controller boards. a controller board is interfaced to any personal computer with the azoteq configuration tool (ct120/200), and the iqs316 graphical user interface (gui). the purpose of the iqs316 ev-kit is to help application and development engineers in evaluating the iqs316 proximity and touch sensor. 2 iqs316 controller board figure 2.1 top view of iqs316 ev-kit controller boa rd 3 using the software gui download and install the iqs316 software gui availa ble at: http://www.azoteq.com/products/download.php?downloa did=241 plug in the ribbon cable provided into the ct120/200 configuration tool, and into the controller board plug the desired sense antennae into the controller board after opening the gui, ?iqs316 demo?, select the communication type ?spi? or ?i 2 c? as indicated in figure 3.1, depending on the mode that the iqs316 controller module is configured in (default spi). see figure 3.1
iq switch ? proxsense ? series copyright ? azoteq (pty) ltd 20 10 . IQS316EV01 evaluation kit user manual page 2 of 8 all rights reserved. revision 1.1 january 2012 figure 3.1 start-up screen for the iqs316 demo gui 3.2 raw data mode the general purpose operation of the iqs316 softwar e gui is in raw data mode. to enter the raw data mode, click on ?raw data? on the iqs316 demo gui start-up screen, as indicated in figure 3.2. figure 3.2 start-up screen for the iqs316 demo gui
iq switch ? proxsense ? series copyright ? azoteq (pty) ltd 20 10 . IQS316EV01 evaluation kit user manual page 3 of 8 all rights reserved. revision 1.1 january 2012 figure 3.3 iqs316 gui screen see figure 3.3 for following of descriptions. (1) main gui start/stop controls. click on ?start? to start streaming data. click on ?stop? to stop streaming data. click on ?device off? to st op streaming data and to cut power to the controller board. to reseed the lta filter clic k on ?reseed?. to view channel streaming data with respect to time click on ?scope ?. (2) channel data is displayed as bar graphs. the re d bar indicates current samples (cs). the green bar indicates the long term average (lta). channel 0 to 3 represents the four proximity channels. channel 4 t o 19 indicate the 16 touch channels. (3) in this section the behavior of the iqs316 ic c an be adjusted. oscillator frequency and the lta filter mode along with active shield se ttings can be modified. to view the device number, click on ?device info?. to set custo m touch thresholds click on ?pc software add-ons?. under ?streaming choice?, the am ount of data that is streamed to the gui can be selected as desired. the various che ck boxes, ?r/w memory map?, ?sleep?, ?stop comms? and ?ack reset? enable additi onal functions such as zero crossing synchronization, please see the iqs316 dat asheet for details describing each option. (4) this section enables the user to configure the prox and touch channels individually or globally. the current samples (cs) and lta filte r values of each channel are displayed under ?current samples? and ?ltas rd?, re spectively. the check boxes on the left hand side can be used to enable or disable channels as desired. ati multiplier 1 2 3 4
iq switch ? proxsense ? series copyright ? azoteq (pty) ltd 20 10 . IQS316EV01 evaluation kit user manual page 4 of 8 all rights reserved. revision 1.1 january 2012 and ati compensation settings can be modified by re ading and adjusting the values as necessary, or by utilizing the ?auto-ati? function for automatic ati selection for prox as well as touch, under ?ati settings :?. 3.2.1 example (see figure 3.4 and figure 3.5): (i) to change the touch threshold on individual cha nnels, click on ?read thres?. this will display the current settings. change the thre shold setting of the channel in question by selecting the desired value from the dr op down box, and click on ?write thres? as indicated in figure 3.4. (ii) to change the base value of current samples th at the auto-ati algorithm tunes the touch channels to, enter a new value under ?ati set tings:? (500 in the example). under ?ati settings:? click on ?send?. whenever ?a uto-ati? is clicked on, the algorithm will retune the current samples to the selected bas e value. lower base values: more stable, faster response times. higher base values: more sensitive. (iii) to make one or more channels more sensitive, the ati compensation parameter can be adjusted as follows (see figure 3.5). under ?ati comp? click on ?read? to display the current compensation values. enter a ne w value between 0 and 63 for the channel that is to be adjusted, and click on ?write ?. a higher compensation value will yield higher current samples, and thus will make th e channel more sensitive. figure 3.4 adjusting individual channel thresholds i ii
iq switch ? proxsense ? series copyright ? azoteq (pty) ltd 20 10 . IQS316EV01 evaluation kit user manual page 5 of 8 all rights reserved. revision 1.1 january 2012 figure 3.5 adjusting channel sensitivity ati compen sation iii
iq switch ? proxsense ? series copyright ? azoteq (pty) ltd 20 10 . IQS316EV01 evaluation kit user manual page 6 of 8 all rights reserved. revision 1.1 january 2012 4 reference design figure 4.1 iqs316 reference design
iq switch ? proxsense ? series copyright ? azoteq (pty) ltd 20 10 . IQS316EV01 evaluation kit user manual page 7 of 8 all rights reserved. revision 1.1 january 2012 5 pcb design 5.1 controller board pcb design figure 5.1 top layer component placement figure 5.2 bottom layer component placement
iq switch ? proxsense ? series copyright ? azoteq (pty) ltd 20 10 . IQS316EV01 evaluation kit user manual page 8 of 8 all rights reserved. revision 1.1 january 2012 the following patents relate to the device or usage of the device: us 6,249,089 b1, us 6,621,225 b2, us 6,650,066 b2, us 6,952,084 b2, us 6,984,900 b1, us 7,084,526 b2, us 7,084,531 b2, us 7,119,459 b2, us 7,265,494 b2, us 7,291,940 b2, us 7,329,970 b2, us 7,336,037 b2, us 7,443,101 b2, us 7,466,040 b2, us 7,498,749 b2, us 7,528,508 b2, us 7,755,219 b2, us 7,772,781, us 7,781,980 b2, us 7,9 15,765 b2, ep 1 120 018 b1, ep 1 206 168 b1, ep 1 308 913 b1, ep 1 530 178 b1, zl 99 8 14357.x, aus 761094 iq switch?, proxsense?, lightsense?, airbutton? and the logo are trademarks of azoteq. the information in this datasheet is believed to be accurate at the time of publication. azoteq assumes no liability arising from the use of the information or the product. the applications mentioned herein are used solely for t he purpose of illustration and azoteq makes no warranty or representation that such appli cations will be suitable without further modification, nor recommends the use of its products for application that may present a risk to human life due to malfunction or otherwise. azoteq products are not authorized for use as critical components in life s upport devices or systems. no licenses to patents are granted, implicitly or otherwise, under any intellectual property rights. azoteq reserves the right to alter its products without pr ior notification. for the most up-to-date information, please refer to www.azoteq.com . www.azoteq.com proxsensesupport@azoteq.com
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