twopoint718 / pomodoro-timer

An orientation-sensitive desktop Pomodoro timer

Pomodoro Timer

A desktop pomodoro timer.

Peripherals

• PCD8544 84x48 pixel LCD screen (SPI-based)
• LSM6DSL (PDF) iNEMO inertial module always-on 3D accelerometer and 3D gyroscope (I2C)
• TIM (General-purpose timer, onboard)
• GPIO reset button
• UART (onboard)

Code

I've either referenced, ported, or otherwise used these open source projects in my own:

• Adafruit GFX Library, BSD License
• STMicroelectronics LSM6DSL accelerometer/gyro driver, BSD License
• STMicroelectronics HAL code (PDF)
• 8x8 VGA Font, Public Domain License

Building

Be sure to have already installed the Arm GNU Toolchain. Then this project can be built by the Makefile in the root directory.

make -j

Building under Windows

TODO

Presentations

• 8LU Keynote by Chris Wilson: Embedded–From the point of view of a web developer YouTube Link

pomodoro-timer's Issues

Add USB CDC serial interface

Create design for v2

Debug PWM

Integrate QP framework on a branch

SPIKE: Use QP/C Framework

Add text/font handling to graphics

Port to C++

Refine 3D model

Things to add or figure out:

• tabs for neodymium magnets (need to measure circumference)
• button holes/mounting
• drill holes/inserts for PCB mounting
• label orientation meanings (text in lid or symbol)
• general polish (fillet edges)

Add Serial Console Handler

Port/Write LSM6DSL Accelerometer Driver

Determine if the LSM6DSL is interfaced via SPI or I2C. This seems to depend on whether or not a particular pin is wired to Vcc or not. It will depend on how it's mounted on the B-L475E-IOT01A board.

Port to nRF52840 chip

Port build system to Cmake/Other

This is a placeholder for adding a command-line build system. Figure out how to do whatever STM32CubeIDE is doing and add that to a make/cmake file.

Implement Bluetooth communication

Add tasks

Pomodoros can be assigned to a current "task"

Rewrite Makefile

Use Nordic SDK

Integrate LSM6DSL with existing code

Test/Debug Serial

Debugging Connectors?

• Tag-Connect
• SOICbite
• Mini SWD 0.05" Pitch Connector

Implement PWM for screen LED

Debug SPI/LCD issue on board

Port PCD8544 Driver

Port the Adafruit driver: https://github.com/adafruit/Adafruit-PCD8544-Nokia-5110-LCD-library to work with the STM32 HAL (e.g. using HAL_GPIO_WritePin &etc)

Add Test Framework

Create v2 3D model

Implement PWM buzzer/tone

SPIKE: use gfx library on LCD

Debug USB CDC interface