This is an RTOS based application. That is developing an embedded application in real time scenario. In this RTOS application, the following things going to happen on Explorer 16:
a. Displaying the KNIGHT RIDER pattern and changing the direction based on PUSH button.
b. Toggling the RUN LED at 3 second intervals.
c. Reading the Temperature and Displaying on the Terminal through UART interface.
d. Reading the POT and displaying the value on Terminal through UART interface.
In order to develop an RTOS based application on Explorer 16, you will need to follow these steps:
1. Set up the hardware:
- Connect the Explorer 16 board to a computer using a USB cable.
- Connect a LED to the board to implement the Knight Rider pattern.
- Connect a push button to the board to change the direction of the pattern.
- Connect a LED to the board to toggle at 3-second intervals.
- Connect a UART module to the board for communication with the terminal.
2. Install the necessary software:
- Download and install the MPLAB X IDE and XC16 compiler.
- Install the necessary device drivers for the Explorer 16 board.
3. Configure the RTOS:
- Create tasks for each functionality mentioned (Knight Rider pattern, LED toggling, temperature reading, POT reading).
- Set the priorities for each task based on their importance.
- Allocate memory and other necessary resources for each task.
4. Implement the Knight Rider pattern:
- Write code to display the Knight Rider pattern using the LED connected to the board.
- Use a timer interrupt to change the direction of the pattern based on the push button input.
- Add necessary delay to control the speed of the pattern.
5. Implement LED toggling:
- Write code to toggle the LED at 3-second intervals using a timer interrupt.
- Use a variable to keep track of the LED state (ON/OFF).
6. Implement temperature reading and display:
- Write code to read the temperature sensor connected to the board.
- Use the UART module to send the temperature value to the terminal.
- Format the temperature value before sending it for better readability.
7. Implement POT reading and display:
- Write code to read the POT (Potentiometer) connected to the board.
- Use the UART module to send the POT value to the terminal.
- Format the POT value before sending it for better readability.
8. Test the application:
- Compile and upload the code to the Explorer 16 board.
- Run the application and verify that the Knight Rider pattern, LED toggling, temperature reading, and POT reading are functioning correctly.
- Use a terminal program on the computer to view the temperature and POT values.
Note: This is a generalized guide and the actual implementation may vary based on the specific requirements and hardware components used in your RTOS application on Explorer 16.
can you write the code?
Certainly! Here's an example code implementation for the RTOS based application on Explorer 16:
```c
#include <stdio.h>
#include <stdlib.h>
#include <xc.h>
#include "config.h"
#include "uart.h"
#include "timer.h"
// Define pins and ports for LEDs, push button, temperature sensor, POT, and UART interface
#define LED1 LATBbits.LATB15
#define LED2 LATBbits.LATB14
#define PUSH_BUTTON PORTBbits.RB13
#define TEMP_SENSOR ADC1BUF0
#define POT ADC1BUF1
#define BAUDRATE 9600
// Declaration of RTOS tasks
void knightRiderTask();
void ledToggleTask();
void temperatureTask();
void potTask();
// Global variables
int knightRiderDirection = 1; // 1 for left to right, -1 for right to left
int ledState = 0; // 0 for OFF, 1 for ON
// Main function
int main() {
// Initialize hardware peripherals
initUART(BAUDRATE);
initTimer();
initADC();
// Create and start RTOS tasks with priority
createTask(knightRiderTask, 1);
createTask(ledToggleTask, 2);
createTask(temperatureTask, 3);
createTask(potTask, 4);
startRTOS();
return 0;
}
// RTOS task to display Knight Rider pattern
void knightRiderTask() {
while(1) {
// Display pattern based on direction
if(knightRiderDirection == 1) {
LED1 = 1;
__delay_ms(100);
LED1 = 0;
__delay_ms(100);
} else {
LED2 = 1;
__delay_ms(100);
LED2 = 0;
__delay_ms(100);
}
// Check push button to change direction
if(PUSH_BUTTON == 0) {
knightRiderDirection = -knightRiderDirection; // Change direction when button pressed
__delay_ms(200); // Debounce delay
}
}
}
// RTOS task to toggle LED at 3-second intervals
void ledToggleTask() {
while(1) {
if(ledState == 0) {
LED1 = 1;
ledState = 1;
} else {
LED1 = 0;
ledState = 0;
}
__delay_ms(3000);
}
}
// RTOS task to read temperature sensor and display on UART terminal
void temperatureTask() {
while(1) {
// Read temperature from sensor
int temperature = TEMP_SENSOR; // Adjust ADC channel if necessary
// Send temperature value to UART terminal
char tempString[10];
sprintf(tempString, "Temperature: %d C\r\n", temperature);
sendUART(tempString);
__delay_ms(1000);
}
}
// RTOS task to read POT and display value on UART terminal
void potTask() {
while(1) {
// Read POT value
int potValue = POT;
// Send POT value to UART terminal
char potString[10];
sprintf(potString, "POT Value: %d\r\n", potValue);
sendUART(potString);
__delay_ms(1000);
}
}
```
Please note that this code is a basic example and may need modifications based on your specific hardware setup and requirements. Use it as a starting point and make necessary changes as per your needs.
Make sure to include the necessary header files for UART communication (uart.h), timer interrupts (timer.h), and configuration settings (config.h) as per your development environment and hardware. Also, make sure to initialize and configure the UART, timer, and ADC peripherals appropriately.