Clock Management System

SDK USED

• MCUXpresso IDE
• VS Code

References

• KLZ25 Reference Manual
• DS3231 Datasheet
• SSD1306 Datasheet
• Modified accordingly by understanding the working thorugh https://github.com/sdp8483/MSP430G2_SSD1306_OLED/tree/master/MSP430G2_SSD1306 for OLED display

Notes

• Note: There may be more flicker in the video as video frame rate is quite high

Overview

• This project includes Real Time Display sensor implementation using FreeRTOS and OLED display.
• The drivers for DS3231 and I2c are written by me completely and FreeRTOS files were generated by MCUXpresso.
• First the init tasks run which initialises the modules or the peripheral and also clears the display.
• Then setting of date and time task runs which takes care of writing the correct data to the rtc and then suspends itself.
• After that the reading and printing of date and time runs followed by a error handler task which takes care if there is any issue with the RTC it will show error or clock error message onto the oled.
• These tow tasks runs in the round robin fashion and thus have automated error handler functionality.
• The complete project is based on bare metal project.
• The display drivers are capable of writing, clearing page by page and also complete clearing of the screen as well.
• The i2c drivers are capable of writing, reading multiple bytes at a time.
• The DS3231 drivers contains functionality to write and read back and also to check the errors if there are any in the RTC while operation.

Display Image with RTC

Project Demo

Triangle Waveform Image