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.
This project is a set of hardware builds that allow working with serial devices in an 'easy' way. The goal is to build a configurator that works with a series of modules (Muxers) to provide serial access via USB.
- Main board has FRAM break out for configuration persistence
- Converter board has FRAM break out for configuration persistence
- 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
- Adapter board falls back to saved config *and* goes into stand alone via usb port *if* it's not seeing the main board
- 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
## Building / Uploading
The ```make.ps1```, ```build.ps1``` and ```upload.ps1``` scripts can be used to build/upload this project. These scripts call the ```arduino-cli``` commands programatically.
Please see the ```hardware``` directory for a break down of how to build the various components of this project.
- Startup shows connection setup + waits for OK prompt via main hat switch
- Status bar @ top with selected uart, selected speed
- Simple display of serial in/out via lcd
- Button for accessing symbols via pop-up list that aren't on keyboard
- Bccessing a uart selection pop-up that maps to rpi uarts
- Button for accessing password selection pop-up to help with password entry over serial
- Button for accessing uart speed pop-up to help with configuring line speeds
- Way to display pinouts stored on micro sd card
- Configuration read from muxes (if attached)
## Implementation (Complete)
- Battery level on feather neopixel (green = >80% ; yellow >=40% ; orange >= 25% ; red <25%)
- User LED (red) always on when feather is running
- Battery level shown as progress bar in the upper right corner of the screen
## Building / Uploading
The ```make.ps1```, ```build.ps1``` and ```upload.ps1``` scripts can be used to build/upload this project. These scripts call the ```arduino-cli``` commands programatically.
This folder contains the necessary sources and information to build a MUX for Raspberry Pis. This mux can be used independently or with the controller.
Note : The mux needs to be configured via sources if not used with the controller.
## Important Considerations
- The Raspberry Pi 4 has 5 available UARTS and we only document how to wire for UART0/1 and UART5
- The Raspberry Pi's prior to the 4 had only UART0 exposed. Please use ONLY the UART0 configuration and setup for these devices.
| [Header Kit for Feather](https://www.adafruit.com/product/2886) | 1 | $0.96 |
| [I2C Non-Volatile FRAM Breakout](https://www.adafruit.com/product/1895) | 2 | $9.95 |
## Implementation (Incomplete)
- FRAM break out for configuration persistence
- Fall back to saved config *and* goes into stand alone via usb port *if* it's not seeing the main board
- Receive configuration over i2c
- Save configuration to FRAM
- FRAM config reading
- Ability to have USB *and* i2c for the UART output
- Use ring buffer @ 16k for i2c
- Send direct to USB and then add to ring buffer (always send over usb even if not used)
## Implementation (Complete)
## Building / Uploading
The ```make.ps1```, ```build.ps1``` and ```upload.ps1``` scripts can be used to build/upload this project. These scripts call the ```arduino-cli``` commands programatically.
