llefranc / 42_piscine_electronique

Optionnal project: microcontroller programming on ATMega328P, with I/O registers, PWM cycle, interrupts, EEPROM access and UART/I2C/SPI serial communication.

Piscine électronique (@42Paris)

⬇️ Below is the video of the result after two weeks of work (code here) ⬇️

About

This was an optionnal project that I did which introduced me to the world of microcontroller programming in C.

42Chips, the electronic association from 42 school designed a dev kit with several components:

• An ATMega328P microcontroller
• Several push buttons
• Several red LEDs
• A temperature and humidity sensor reachable through I2C bus
• A real time clock reachable through I2C bus
• A 16 bits I/O expander reachable through I2C bus
• A segments display
• RGB LEDs reachable through SPI bus
• An UART to USB port
• 3 analog sensors: a potentiometer, a light detector and a NTC

Full schema of the devkit available here

The exercises

The goal of the project was to get familiar and interact will all these different components.

We were allowed to only use C language and no external library. Each exercise has to be completed by interacting with the ATMega328P registers, using the chip's documentation as source.

A new pool of exercises for a new thematic was unlocked each day of the week during two weeks.

• ➡️ D00: I/O registers.
• ➡️ D01: Timers and PWM cycles.
• ➡️ D02: Interrupts.
• ➡️ D03: UART protocol.
• ➡️ D04: I2C protocol.
• ➡️ D05: EEPROM.
• ➡️ D06: RGB LED.
• ➡️ D07: Analog-to-Digital Converter (ADC).
• ➡️ D08: SPI protocol.
• ➡️ D09: Expander and segments display.

There was also each weekend a rush project.

• ➡️ R00: Game using I2C protocol (unfortunately I didn't have enough time to do this one).
• ➡️ R01: A program interacting with all the devkit's components.