TWI (I2C) Driver

[IbixD97]

Description of task

Implement an I2C driver for a controller that can talk to any target MCU successfully for both read and write operations.
The driver will be further developed to suit the ATSAM 32bit MCU that the AUV will have but at the start can be tested using the 8bit AVR128DA48 MCU instead.

Time estimate (Hours)
20h

Deadline (DD.MM)
17.11

Suggested Workflow

• Write a TWI write function that can send 1 byte at a time
• Write a TWI read function that can read 1 byte from the target at a time
• Expand the write function so that it can send as many bytes as wanted
• Expand the read function so that it can read as many bytes as wanted
• Use interrupts instead of polling for both write and read functions.
• Implement a case for every possible error or issue that can arise during an interaction

Specifications

• Can detect and print the address of any connected devices on the bus
• Can send as many data as wanted to any target MCU on the bus without needing to re-establish the communication
• Can request as many data as wanted from any target MCU on the bus without needing to re-establish the communication
• Core independent, aka. interrupt based, system.

Contacts

• @IbixD97 - Embedded Systems Lead

Code Quality

• Every function in header files are documented (inputs/returns/exceptions)
• The project has automated tests that cover MOST of the functions and branches in functions (pytest/gtest)
• The code is documented on the wiki (provide link)