EECE237 Lab Work 4 Due On 4/10/2016 At 11:59 Pm - Spring 201

EECE237 Lab Work 4 due On 4/10/2016 11:59pm - Spring 2016

The task is to write a C program that lights up the LCD panel and the LEDs of the Discovery kit together like an advertisement board. The message on the LCD panel should be, "Welcome to Chico!". The program's main algorithm involves initializing the I2C2 peripheral, initializing GPIOE and GPIOA peripherals, waiting until the push button is pressed, lighting all LEDs, clearing the LCD message, pausing for 1 second, turning off the LEDs, displaying the message on the LCD, pausing for another second, and then repeating these steps indefinitely. The program must be built by combining and modifying existing codes from files LEC_in_C.c and LCD_in_C.c, following the provided step-by-step sequence. The implementation also requires using the provided pause_1second() subroutine, adjusted to approximate a 1-second delay. The final program must include the student's name and section number on the first line, be tested separately for LCD operation and LED control before integration, and be submitted via BBLearner by the deadline of 11:59 pm on April 10, 2016.

Paper For Above instruction

The implementation of an integrated advertisement display on the Discovery kit involves multiple hardware interfaces and deliberate software control to synchronize visual outputs. The core aim is to create an engaging display that alternates between lighting LEDs and showing messages on the LCD, synchronized around a push button trigger, to simulate a lively advertisement board. This project requires careful integration of several embedded programming components: I2C communication for LCD control, GPIO manipulation for LED control, and precise timing delays to ensure the display effects are perceptible and smooth.

The initial phase entails setting up the hardware peripherals; specifically, initializing the I2C2 interface, which manages communication with the LCD panel, and configuring GPIOE and GPIOA ports that control the LEDs and push button inputs. Proper initialization ensures reliable data transfer and responsive control. Once the hardware setup is complete, testing each subsystem independently is essential. Running the LCD code (LCD_in_C.c) alone verifies that the message display functionality is operational. Subsequently, executing the LED control code (LED_in_C.c) confirms that the LEDs respond correctly.

The central control loop of the program revolves around user interaction via the push button. When the button is pressed, the system proceeds to light all LEDs, clear the LCD's current message, and then pause briefly to create a visual transition. Subsequently, the LEDs are turned off while the LCD displays the greeting message "Welcome to Chico!". After another pause, the cycle repeats, creating a continuous display pattern resembling an advertisement. The timing delays are critical; thus, the provided pause_1second() subroutine must be employed and fine-tuned to approximate a full second, ensuring smooth visibility without excessive delay.

Combining and modifying existing code files require close attention to function calls, peripheral configurations, and timing routines to ensure seamless integration. Key steps include merging initialization routines, ensuring no conflicts in GPIO or I2C configurations, and sequencing control routines properly within an infinite loop structure. Adequate commenting and clear documentation within the code facilitate understanding and future modifications.

The final deliverable must include essential identification on the code's first line—namely, the student's name and section number. Testing each component separately before combination ensures robustness. Before submission, verifying the correct operation of the integrated program on the physical Discovery kit, including the proper display of messages and LED behavior upon push button presses, is necessary to meet project criteria. The project emphasizes both understanding embedded peripheral control and implementing reliable, synchronized behavior to produce an engaging visual effect akin to an advertisement display.

References

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