Peripheral-to-memory transfer in Embedded C - Mini Project: Build & Apply

Peripheral-to-memory transfer

📖 Scenario: You are working on a simple embedded system that reads data from a sensor peripheral and stores it into memory for later processing.

🎯 Goal: Build a small program that simulates reading data from a peripheral register and transfers it into a memory buffer using a loop.

📋 What You'll Learn

Create an array called memory_buffer with 5 elements initialized to zero

Create a variable called peripheral_data as an array with 5 predefined sensor values

Use a for loop with variable i to copy data from peripheral_data to memory_buffer

Print the contents of memory_buffer after the transfer

💡 Why This Matters

🌍 Real World

Embedded systems often read sensor or peripheral data and store it in memory for processing or communication.

💼 Career

Understanding peripheral-to-memory transfers is essential for embedded software developers working with microcontrollers and hardware interfaces.

1

DATA SETUP: Create the peripheral data array

Create an integer array called peripheral_data with these exact values: 10, 20, 30, 40, 50.

Embedded C

// Your code here

Need a hint?

Use C array syntax to create peripheral_data with the given values.

2

CONFIGURATION: Create the memory buffer array

Create an integer array called memory_buffer with 5 elements, all initialized to zero.

Embedded C

int peripheral_data[5] = {10, 20, 30, 40, 50};
// Your code here

Need a hint?

Initialize memory_buffer with zeros using curly braces.

3

CORE LOGIC: Transfer data from peripheral to memory

Use a for loop with variable i from 0 to 4 to copy each element from peripheral_data to memory_buffer.

Embedded C

int peripheral_data[5] = {10, 20, 30, 40, 50};
int memory_buffer[5] = {0};
// Your code here

Need a hint?

Use a for loop to copy each element by index.

4

OUTPUT: Print the memory buffer contents

Use a for loop with variable i from 0 to 4 to print each element of memory_buffer separated by spaces, followed by a newline.

Embedded C

int peripheral_data[5] = {10, 20, 30, 40, 50};
int memory_buffer[5] = {0};
for (int i = 0; i < 5; i++) {
    memory_buffer[i] = peripheral_data[i];
}
// Your code here

Need a hint?

Use printf inside a loop to print each element followed by a space, then print a newline.