2.7 KiB
2.7 KiB
Serial Debugger
A debug console for serial TTL. This can be used to work with serial TTL directly or operate as a pass through for a computer.
Hardware / BoM
| Item | Quantity | Unit Cost |
|---|---|---|
| Keyboard FeatherWing (Keybaord + LCD) | 1 | $55.00 |
| Feather nRF52840 Express | 1 | $24.95 |
| Feather M0 Basic Proto | 1 | $19.95 |
| FeatherWing Proto | 1 | $4.95 |
| 2x20 pin IDC Box Header | 1 | $0.75 |
| GPIO Ribbon Cable for Raspberry Pi | 1 | $2.95 |
Hardware Docs
- https://www.solder.party/docs/keyboard-featherwing/downloads/
- https://github.com/arturo182/bbq10kbd_i2c_sw
- https://github.com/lvgl/lv_arduino
Implementation (Incomplete)
- Setup 2nd feather + proto board as a 40 pin socket
- 2nd feather acts as a mux between different rpi uarts (0 and 1 and 5 in particular)
- 2nd feather talks via qwiic connector over i2c to main board
- User button on feather to flip between usb and local serial (aka : can be used as a serial adapter)
- Note this on the UI
- Fall back to internal uart pins if no expander is present
- Note this on the UI
- Main board startup shows connection setup + waits for OK prompt via main hat switch
- Main board has a status bar @ bottom with battery level, selected uart, selected speed
- Main board does simple display of serial in/out via lcd
- Main board has a button for accessing symbols via pop-up list that aren't on keyboard
- Main board has a button for accessing a uart selection pop-up that maps to rpi uarts
- Main board has a button for accessing password selection pop-up to help with password entry over serial
- Main board has a button for accessing uart speed pop-up to help with configuring line speeds
Implementation (Complete)
- Battery level on feather neopixel (green = >80% ; yellow >=40% ; orange >= 25% ; red < 25%)
- User LED (red) always on when feather is running
Licensing
Unless otherwise stated all source code is licensed under the Apache 2 License.
Unless otherwise stated the non source code contents of this repository are licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License