As an embedded software developer, I design and implement drivers and firmware for various communication protocols, including SPI, I2C, and USART, using the STM32F407 microcontroller. With a meticulous approach, I developed robust APIs for each protocol, meticulously following the STM32F407 datasheet, reference manual, and the board's user manual.
One of my notable achievements was the successful implementation of interrupts in all the protocols, optimizing the system's efficiency and responsiveness. To ensure the accuracy and reliability of my work, I utilized a logic analyzer to meticulously observe the working of each protocol and fine-tune the implementation as necessary.
To validate the functionality and performance of the protocols, I developed comprehensive test programs that effectively utilized the APIs I created. These tests covered a wide range of scenarios and stress-tested the protocols under various conditions, ensuring their reliability in real-world applications.
I also developed robust and efficient low-level drivers from scratch for General Purpose Input/Output (GPIO) pins, along with the design of a comprehensive Application Programming Interface (API) that incorporates interrupt-driven functionality. The goal is to enable seamless control and management of GPIO pins in embedded systems, providing high-level abstraction while maintaining optimal performance and responsiveness.
This home security system uses the Atmega microcontroller, I programmed it in C language. The security system is designed to provide comprehensive security by detecting motion, smoke, gas, and changes in temperature within the home environment.
To ensure immediate user notification, I integrated a GSM module into the security system. Whenever any of the sensors are triggered, the system promptly sends a text message to the user, providing information about which specific sensor has been activated. This real-time alert enables the user to take necessary actions and ensure the safety of their home.
To ensure a user-friendly interface, the security system utilizes an LCD for clear and concise information presentation. Additionally, a built-in buzzer has been implemented to sound an alarm in the event of an intrusion or potential threat, providing an audible warning to alert occupants.
In addition to the development of the home security system, I utilized KiCAD, a powerful PCB design software, to create and design the circuit board for the system. With KiCAD, I was able to efficiently lay out the components and perform circuit routing, ensuring optimal connectivity and electrical performance.
