Rustphone

(temporary name) (early development)

OS for a dumbphone based on Maduino Zero 4G LTE board.

Install tools

sudo pacman -S arm-none-eabi-gcc
rustup target add thumbv6m-none-eabi

Run simulator

cargo run --features simulator

Build

cargo build --release --target thumbv6m-none-eabi

Pins

• D2
• D3
• D4
• D5 (internally assigned): modem power
• D6 (internally assigned): modem reset
• D7 (internally assigned): flightmode
• D8
• D9
• D10
• D11
• D12
• D13
• A0
• A1 (internally assigned): vbat
• A2 (internally assigned): vsys
• A3
• A4
• A5
• SDA: I2C
• SCL: I2C

Used pins:

• display SPI: 3 pins
• keypad: 6 pins (74HC565+75HC165), maybe 5 if the same clock is used
• display LED: 1 pin
• torch LED: 1 pin
• ESP UART: 2 pins (I2C still possible if not enough pins)

Note: at most 5 outputs of the 74HC565 may be used as GPO.

components

https://www.makerfabs.com/maduino-zero-4g-lte-sim7600.html https://www.waveshare.com/1.54inch-e-Paper-Module.htm1 https://bulkmemorycards.com/shop/microsd-cards/microsd-32gb/sd-32gb-class-10/32gb-microsd-ultra-sandisk-memory-card-2/ Maybe an ESP for WIFI and Bluetooth: https://www.sparkfun.com/products/18034

crates

bitmap-font ? https://lib.rs/crates/at-commands OR https://lib.rs/crates/atat

Apps

• Calculator
• Config
• Contacts
• Journal
• Play audio
• Send call
• Send message
• Show bitmap

Keypad

Optimized to reduce the number of consecutive presses on the same key in French.

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