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Tiva TM4C1294NCPT Traffic Light Controller Testing Document

This document describes the testing procedure of the software. Refer to:

  1. Requirements
  2. Architecture and Design

For software details.

Wiring Table

  • MR - Main Road
  • SR - Side Road
  • G - Green
  • Y - Yellow
  • R - Red
LED or Button uC pin LabJack pin
MR Car G K7 EIO-7
MR Car Y K6 EIO-6
MR Car R K5 EIO-5
SR Car G K2 EIO-2
SR Car Y K1 EIO-1
SR Car R K0 EIO-0
MR Ped G L5 FIO-7
MR Ped R L4 FIO-6
SR Ped G L1 FIO-5
SR Ped R L0 FIO-4
Mode Change M0 CIO-0
MR Ped Button M1 CIO-1
SR Ped Button M2 CIO-2
Car Sensor M3 CIO-3

Tests:

Button tests are done, by pressing the button before beginning the test.

  • Button 1: Main Pedestrian button
  • Button 2: Side Pedestrian button
  • Button 3: Car Sensor

In Total There will be 12 Tests, 4 button press cases for each of 3 operating modes:

Test Name Test Usage Requirement
Standard To check the operation of all LEDs. RE1, RE4, RE5, RE6
Standard Button 1 The button press should alter LED operation. RE2, RE7, RE8
Standard Button 2 The button press should alter LED operation. RE2, RE7, RE8
Standard Button 3 Button press should be ignored . RE2
Rush To check the operation of all LEDs. RE1, RE3, RE4, RE5, RE9
Rush Button 1 Button press should be ignored. RE2, RE10
Rush Button 2 Button press should loop the operation 1 cycle. RE2, RE11
Rush Button 3 Button press should loop the operation 1 cycle. RE2, RE7, RE11
Night To check the operation of all LEDs. RE1, RE3, RE4, RE5, RE12, RE13
Night Button 1 Button press should interrupt the blinking. RE2, RE14
Night Button 2 Button press should interrupt the blinking. RE2, RE14
Night Button 3 Button press should be ignored. RE2

Test Data:

The data of the tests can be found at: Test Data

Test Results:

The results of the tests can be found at: Test Results

Interpretation of the tests:

While almost everything has worked as intended, there is a problem with the main pedestrian button. Throughout all the tests directly involving this button, it has not shown any changes to the behaviour of the operation. This a bug in the software.

Test Status:

Test Name Test Status
Standard Passed
Standard Button 1 Failed
Standard Button 2 Passed
Standard Button 3 Passed
Rush Passed
Rush Button 1 Passed
Rush Button 2 Passed
Rush Button 3 Passed
Night Passed
Night Button 1 Failed
Night Button 2 Passed
Night Button 3 Passed