====== Function Test ======
This section explains how to test the GECKO4 Education epfl-edition with the default test program. You can get the bit file {{ :gecko4education_epfl:functiontest.jic |here}}.
The functiontest contains four tests as indicated in the following sections.
===== Start Test Environment and LED test =====
To start a function-test session hold SW6 and tip SW1.

SW1 is set as a reset button. More information concerning the buttons can be found [[gecko4education_epfl:buttons|here]].
{{ :gecko4education_epfl:getaccess.gif?400 |}}
Check if all LED's and seven segment displays are illuminated.

More information concerning the LED and seven segment displays can be found [[gecko4education_epfl:leds|here]].
{{ :gecko4education_epfl:ledtest.jpg?400 |}}
===== Test 0 Buttons  =====
Tip the buttons in following order: SW2, SW3, SW4, SW5, SW6, SW7

More information concerning the buttons can be found [[gecko4education_epfl:buttons|here]].
{{ :gecko4education_epfl:buttontest.gif?400 |}}

===== Test 1 DIP Switch =====
Press DIP switches in following order: DIP-switch1.1 ... DIP-switch1.8, DIP-switch2.1 ... DIP-switch2.8

More information concerning the DIP-switches can be found [[gecko4education_epfl:buttons|here]].
{{ :gecko4education_epfl:diptest.gif?400 |}}

===== Test 2 Serial Flash =====
This test run automatically and is very fast. Normally you won't see something.

===== Test 3 SDRAM =====
The SDRAM Memory test is running automatically. SEG4 DP indicates the status.
^SEG4 DP ^ Status ^
|fast blink | write|
|slow blink | read |
Further information concerning seven segment display can be found [[gecko4education_epfl:leds|here]].
{{ :gecko4education_epfl:sdram.gif?400 |}}
===== Test 4 DAC =====
For this test a connection to an Oscilloscope is required. The below table indicates the connections.
 
^GECKO4Education ^ Oscilloscope ^
|DAC1 | Channel 1 |
|DAC0 | Channel 2 |
|GND | GND Channel 1|
|GND | GND Channel 2|

More information concerning the Arduino compatible connectors can be found [[gecko4education_epfl:arduino|here]] and More information concerning the DAC can be found [[gecko4education_epfl:adcdac|here]].


{{ :gecko4education_epfl:test41.jpg?400 |}}

The desired output for Channel 1 on the oscilloscope is indicated in the figure below.

{{ :gecko4education_epfl:adc1.jpg?400 |}}


{{ :gecko4education_epfl:test42.jpg?400 |}}

The desired output for Channel 2 on the oscilloscope is indicated in the figure below.

{{ :gecko4education_epfl:adc2.jpg?400 |}}