rustphone/README.md

# Rustphone

(temporary name) (early development)

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

## Goals

GSM will be shutting down in France in a few years so if you have an old cellphone and don't want to buy a fancy, spying, expensive smartphone, making your own 4G cellphone is an interesting option.

* Low cost
* Privacy
* Long battery life (this one will be complicated)
  * Low-consumption components
  * Use less CPU cycles
  * Update display less often
  * Use less wireless RX/TX
* Usable for basic things (call, messages, agenda, contacts, notepad)
* Customizable (smartphones don't do exactly what I want)
* (long term) Mesh networking and other cool stuff

## Install tools

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

## Run simulator

```bash
cargo run --features simulator
```

## Build

```bash
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
* https://crates.io/crates/embedded-menu

## 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.

For example, the letters _m_, _o_, _n_ are on the same key `MNO6` but they frequently appear consecutively in French, so you have to wait between each letter. Having them on three different keys solves this problem.

```
ncb1	upz2	tdk3
eow4	lqh5	age6
sfx7	rmj8	ivy9
```
Initial commit 2023-08-20 09:31:46 +00:00			`# Rustphone`

			`(temporary name) (early development)`

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

State transitions, key labels 2023-09-16 22:15:48 +00:00			`## Goals`

			`GSM will be shutting down in France in a few years so if you have an old cellphone and don't want to buy a fancy, spying, expensive smartphone, making your own 4G cellphone is an interesting option.`

			`* Low cost`
			`* Privacy`
			`* Long battery life (this one will be complicated)`
			`* Low-consumption components`
			`* Use less CPU cycles`
			`* Update display less often`
			`* Use less wireless RX/TX`
			`* Usable for basic things (call, messages, agenda, contacts, notepad)`
			`* Customizable (smartphones don't do exactly what I want)`
			`* (long term) Mesh networking and other cool stuff`

Initial commit 2023-08-20 09:31:46 +00:00			`## Install tools`

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

			`## Run simulator`

			```bash
Ctx, SD 2023-09-11 20:22:20 +00:00			`cargo run --features simulator`
Initial commit 2023-08-20 09:31:46 +00:00			```

			`## Build`

			```bash
fix(bsp) 2023-08-21 21:27:37 +00:00			`cargo build --release --target thumbv6m-none-eabi`
Initial commit 2023-08-20 09:31:46 +00:00			```

			`## 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`

fix(bsp) 2023-08-21 21:27:37 +00:00			`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.`
Initial commit 2023-08-20 09:31:46 +00:00
			`## components`
State transitions, key labels 2023-09-16 22:15:48 +00:00			`* 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`
Initial commit 2023-08-20 09:31:46 +00:00
			`## crates`
State transitions, key labels 2023-09-16 22:15:48 +00:00			`* bitmap-font ?`
			`* https://lib.rs/crates/at-commands OR https://lib.rs/crates/atat`
			`* https://crates.io/crates/embedded-menu`
Initial commit 2023-08-20 09:31:46 +00:00
			`## 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.`

State transitions, key labels 2023-09-16 22:15:48 +00:00			For example, the letters _m_, _o_, _n_ are on the same key `MNO6` but they frequently appear consecutively in French, so you have to wait between each letter. Having them on three different keys solves this problem.

			```
Initial commit 2023-08-20 09:31:46 +00:00			`ncb1 upz2 tdk3`
			`eow4 lqh5 age6`
			`sfx7 rmj8 ivy9`
State transitions, key labels 2023-09-16 22:15:48 +00:00			```