https://github.com/sethitow/mbed-pinetime

Pinetime Firmware based on Arm MbedOS.
https://github.com/sethitow/mbed-pinetime

mbed pine64 pinetime

Last synced: 3 months ago
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Pinetime Firmware based on Arm MbedOS.

• Host: GitHub
• URL: https://github.com/sethitow/mbed-pinetime
• Owner: sethitow
• Created: 2019-11-23T06:04:05.000Z (over 4 years ago)
• Default Branch: master
• Last Pushed: 2021-03-25T23:23:43.000Z (over 3 years ago)
• Last Synced: 2024-01-27T01:04:26.467Z (5 months ago)
• Topics: mbed, pine64, pinetime
• Language: C
• Homepage:
• Size: 3.69 MB
• Stars: 15
• Watchers: 4
• Forks: 2
• Open Issues: 5
• Metadata Files:
  • Readme: README.md

Lists

• awesome-pinetime - sethitow/mbed-pinetime

README

        
![Animated GIF of Pinetime demo](media/pixel-painting.gif)

# Getting Started

> These instructions are macOS centric right now, but the Mbed toolchain will work on Mac, Windows, and Linux. Improvments to these instructions are welcome. 

Install the arm-eabi-none toolchain

```

brew tap PX4/homebrew-px4

brew install PX4/homebrew-px4/gcc-arm-none-eabi-63

```

Optionally, install `nrfjprog`

```

brew cask install nordic-nrf-command-line-tools

```

Checkout all submodules `git submodule update --init --recursive`.

Install all the Python packages required for Mbed. Your options are:

- Install from the Pipfile. `pipenv install`

- Install from Mbed requirements.txt `pip install -r modules/mbed-os/requirements.txt`

To use the Makefiles, you must set the environment variable `MBED_PINETIME_PATH` to the root of the repository. If anyone has ideas on how to not need this or otherwise improve the build system, let me know.

# Development Notes

- [x] BMA421 Accelerometer

- [-] HRS3300 Heart Rate Sensor

- [x] Hynitron CST816S Touch Pad

- [-] Sitronix ST7789V LCD Driver

- [x] Macronix SPI Flash

- [x] Vibrator

- [x] LED backlight

- [x] ADC Battery Voltage Sense

- [ ] Physical button

### I2C 

00> 0x15 Touchpad

- Only responds after a touch event.

- At 100khz, Limit of read from register 0x00 after a touch event is 190-195ish bytes. This is probably due to the chip going back to sleep.

	

00> 0x18 ACK Accelerometer

- BMA421 -- Not a public avalible chip, therefore no publicly availible drivers.

- Similar to BMA423

- Seems to require binary blob on startup (chip firmware?)

	

00> 0x44 ACK HALS3300 Heart Rate Sensor

- Datasheet is OK

- Resolution was set to 16bits 0x08

- Gain was set to 1 0x02

### SPI

Flash:

- SPI flash is now working with Mbed SPIF driver

- Needed to be "reset" by letting the battery die

- 4194304 bytes

Display:

- Display needs mode 3 SPI?

- https://www.allaboutcircuits.com/technical-articles/spi-serial-peripheral-interface/

- Got it sort-of working with Mbed ports of the Adafruit GFX libraries. 

- Still work to be done here

I can't get the physical button to work for the life of me. Someone please help 😂