ESP32 FreeRTOS - Bluetooth Access Control & Alarm

Description:

DISCLAIMER: Developed for the class Embedded Computational Systems. The objective of this project was to create a Real-Time system using an ESP32 or an Arduino Mega with FreeRTOS. I ended up using the board ESP32 WeMos LOLIN32 Lite which I already had, and it became easier to work from home.

With the code I provide, you won't be able to single-handedly replicate the project, but it is a great help for similar projects.

Project Specifications

The project had some objectives to fulfill, which can be divided in ESP32 and FreeRTOS functionalities.

ESP32 Framework:

Modules that must be included in the project:

• EUSART

• I/O ports

• External interrupt(s)

• ADC/DAC (ex: Cap touch)

• PWM

• I2C/SPI

Modules that cannot be included in the project:

• Timers

• Delays

• Anything else that blocks the processor

FreeRTOS:

Include at least 5 of the following modules in the project:

• Tasks

• Idle Task Hook

• Task Priority Change

• Task Deletion

• Message Queues

• Interrupts Management

• Semaphores:

• Binary Semaphores

• Counting Semaphores

• Resource Management

• Critical Sections

• Mutexes

Project images

These were the images used in the project's report.

System diagram

FreeRTOS flow diagram

FreeRTOS core time diagram