ESP

.gitignore

@@ -1 +0,0 @@
-/target

Cargo.toml

@@ -1,35 +0,0 @@
-[package]
-name = "rustphone"
-version = "0.1.0"
-authors = ["tuxmain <tuxmain@zettascript.org>"]
-repository = "https://git.txmn.tk/tuxmain/rustphone"
-license = "AGPL-3.0-only"
-edition = "2021"
-
-[dependencies]
-arrayvec = { version = "0.7.4", default_features = false }
-atsamd-hal = { version = "0.15.1", default_features = false, features = ["samd21g", "samd21g-rt", "usb"] }
-cfg-if = "1.0.0"
-embedded-graphics = "0.7.1"
-embedded-text = "0.5.0"
-embedded-sdmmc = { version = "0.3.0", default_features = false }
-epd-waveshare = "0.5.0"
-maduino_zero_4g = { git = "https://github.com/ZettaScript/atsamd", branch = "maduino-zero-4g", features = ["usb"] }
-panic-halt = "0.2.0"
-tz-rs = { version = "0.6.14", default_features = false, features = ["const"] }
-tzdb = { version = "0.5.7", optional = true }
-
-# simulator
-embedded-graphics-simulator = { version = "0.4.1", optional = true }
-
-[features]
-#default = ["simulator"]
-
-simulator = ["embedded-graphics-simulator", "tzdb"]
-
-[profile.release]
-lto = "fat"
-opt-level = 3
-
-[patch."https://github.com/ZettaScript/atsamd"]
-maduino_zero_4g = { path = "../atsamd/boards/maduino_zero_4g" }

README.md

@@ -22,7 +22,11 @@ GSM will be shutting down in France in a few years so if you have an old cellpho
 ## Install tools
 
 ```bash
+# Choose one line depending on your distro
 sudo pacman -S arm-none-eabi-gcc
+sudo apt install gcc-arm-none-eabi
+
+# Install Rust target
 rustup target add thumbv6m-none-eabi
 ```
 
@@ -38,6 +42,12 @@ cargo run --features simulator
 cargo build --release --target thumbv6m-none-eabi
 ```
 
+Read usb:
+
+```bash
+cat /dev/serial/by-id/usb-2222_3333-if00
+```
+
 ## Pins
 
 * D2
@@ -102,3 +112,25 @@ ncb1	upz2	tdk3
 eow4	lqh5	age6
 sfx7	rmj8	ivy9
 ```
+
+## OS
+
+In case we switch to some more powerful MCU like ESP32.
+
+Using an RTOS would be better than creating a monolithical horror. It would also make it easier to split the software into modular programs and store some programs in different memories (e.g. store kernel in internal flash and user programs in SPI flash).
+
+Rusty embedded RTOS's:
+
+* https://bern-rtos.org/
+  * does not support Xtensa
+  * supports Cortex-M
+  * does not seem to support dynamic programs
+* https://www.drone-os.com/
+  * does not support Xtensa
+  * supports Cortex-M
+  * explicitly does not support dynamic programs
+
+Needs:
+* Kernel writes user programs to SPI flash (can it be done via chip programming or has it do be done by kernel? then USB, SD, debug probe, UART??)
+* Handle hardware-specific work (provide high level interfaces for GPIO, SD, screen, modem, wifi, bluetooth...)
+* Dynamic threads

common/.gitignore

@@ -0,0 +1 @@
+target

common/Cargo.lock

@@ -0,0 +1,16 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "common"
+version = "0.1.0"
+dependencies = [
+ "embedded-hal",
+]
+
+[[package]]
+name = "embedded-hal"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "361a90feb7004eca4019fb28352a9465666b24f840f5c3cddf0ff13920590b89"

common/Cargo.toml

@@ -0,0 +1,7 @@
+[package]
+name = "common"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
+embedded-hal = "1.0.0"

common/rustfmt.toml

@@ -0,0 +1,9 @@
+hard_tabs = true
+newline_style = "Unix"
+imports_granularity = "Crate"
+
+unstable_features = true
+format_code_in_doc_comments = true
+format_macro_bodies = true
+format_macro_matchers = true
+format_strings = true

common/src/cm.rs

@@ -0,0 +1,5 @@
+/// CPU to Modem
+pub enum CMMessage {
+	Ping(u32),
+	Pong(u32),
+}

common/src/lib.rs

@@ -0,0 +1,15 @@
+pub mod cm;
+pub mod mc;
+
+pub const VERSION: u32 = 1;
+
+enum State {
+	/// Not ready, not even pinged
+	Idle,
+	/// Ping failed
+	Fail,
+	/// Waiting for pong
+	Pinging,
+	/// Ready to work
+	Ready,
+}

common/src/mc.rs

@@ -0,0 +1,26 @@
+use crate::{cm::CMMessage, State};
+
+/// Modem to CPU
+pub enum MCMessage {
+	Ping(u32),
+	Pong(u32),
+}
+
+/// Modem-side connection driver
+pub struct MCConnection<SPI> {
+	spi: SPI,
+	state: State,
+}
+
+impl<SPI> MCConnection<SPI> where SPI: embedded_hal::spi::SpiDevice {
+	pub fn new(spi: SPI) -> Self {
+		Self {
+			spi,
+			state: State::Idle,
+		}
+	}
+
+	fn handle_message(message: CMMessage) {
+		
+	}
+}

esp/.cargo/config.old.toml

@@ -0,0 +1,27 @@
+[build]
+target = "xtensa-esp32-none-elf"
+
+[target.'cfg(target_arch = "xtensa")']
+#runner = "espflash flash --monitor --flash-size 4mb --chip esp32 --partition-table partition.csv --flash-freq 40mhz --flash-mode qio"
+runner = "espflash flash --monitor --flash-size 4mb --chip esp32"
+rustflags = [
+	# Optimization
+	"-Z", "location-detail=none",
+	"-C", "link-args=-Wl,--sort-section=alignment",
+	"-C", "inline-threshold=7",
+
+	# GNU LD
+	"-C", "link-arg=-Wl,-Tlinkall.x",
+	"-C", "link-arg=-nostartfiles",
+
+	# LLD
+	# "-C", "link-arg=-Tlinkall.x",
+	# "-C", "linker=rust-lld",
+]
+
+[env]
+ESP_LOGLEVEL = "info"
+
+[unstable]
+build-std = ["core", "panic_abort"]
+#build-std = ["core"]

esp/.cargo/config.toml

@@ -0,0 +1,17 @@
+[target.xtensa-esp32-none-elf]
+runner = "espflash flash --monitor"
+
+[env]
+ESP_LOG="info"
+
+[build]
+rustflags = [
+  "-C", "link-arg=-Wl,-Tlinkall.x",
+  "-C", "link-arg=-Trom_functions.x",
+	"-C", "link-arg=-nostartfiles",
+]
+
+target = "xtensa-esp32-none-elf"
+
+[unstable]
+build-std = ["alloc", "core"]

esp/.gitignore

@@ -0,0 +1,3 @@
+wifi-ssid.txt
+wifi-psw.txt
+target

esp/.vscode/settings.json

@@ -0,0 +1,4 @@
+{
+    "rust-analyzer.cargo.allTargets": false,
+    "rust-analyzer.cargo.target": "xtensa-esp32-none-elf",
+}

esp/Cargo.toml

@@ -0,0 +1,53 @@
+[package]
+name    = "rustphone"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
+cfg-if = "1.0.0"
+critical-section = "1.2.0"
+embassy-embedded-hal = "0.2.0"
+embassy-executor = { version = "0.6.3", features = ["task-arena-size-20480"] }
+embassy-net = { version = "0.4.0", features = [ "tcp", "udp", "dhcpv4", "medium-ethernet"] }
+embassy-sync = "0.6.1"
+embassy-time = { version = "0.3.2", features = ["generic-queue-8"] }
+embedded-graphics = "0.8.1"
+embedded-hal = "1.0.0"
+embedded-hal-02 = { version = "0.2.7", package = "embedded-hal", features = ["unproven"] }
+embedded-io = "0.6.1"
+embedded-io-async = "0.6.1"
+embedded-layout = "0.4.1"
+embedded-text = "0.7.2"
+#embedded-tls = { version = "0.17.0", default-features = false }
+epd-waveshare = { path = "../../epd-waveshare", optional = true }
+esp-alloc = "0.5.0"
+esp-backtrace = { version = "0.14.2", features = ["esp32", "exception-handler", "panic-handler", "println"] }
+esp-hal = { version = "0.22.0", features = ["esp32"] }
+esp-hal-embassy = { version = "0.5.0", features = ["esp32"] }
+esp-println = { version = "0.12.0", features = ["esp32", "log"] }
+esp-wifi = { version = "0.11.0", default-features = false, features = ["esp32", "utils", "wifi", "esp-alloc", "log"] }
+log = "0.4.21"
+#oled_async = { path = "../../oled_async", features = ["spi"] }
+nb = "1.1.0"
+#panic-halt = "0.2.0"
+rand_core = "0.6.4"
+#sh1106 = { version = "0.5.0", optional = true }
+sh1106 = { git = "https://github.com/techmccat/sh1106", branch = "hal-1", optional = true }
+static_cell = { version = "2.1.0", features = ["nightly"] }
+
+[features]
+default = ["display_sh1106"]
+
+display_epd = ["dep:epd-waveshare"]
+display_sh1106 = ["dep:sh1106"]
+
+[profile.release]
+codegen-units = 1
+debug = 2
+debug-assertions = false
+incremental = false
+opt-level = 's'
+lto = 'fat'
+overflow-checks = false
+#panic = "abort"
+strip = true

esp/README.md

@@ -0,0 +1,11 @@
+## Build
+
+```bash
+cargo +esp run --release --target xtensa-esp32-none-elf
+```
+
+## Links
+
+https://github.com/ivmarkov/rust-esp32-std-demo/blob/main/src/main.rs#L1505
+
+OLED SPI/I2C V2 1.3in SH1106 5/3.3V

esp/build.rs

@@ -0,0 +1,5 @@
+fn main() {
+	//println!("cargo:rustc-link-arg-bins=-Tlinkall.x");
+	//println!("cargo:rustc-link-arg-bins=-Tesp32_rom_functions.x");
+	//println!("cargo:rustc-link-arg-bins=-Tdefmt.x");
+}

esp/partition.csv

@@ -0,0 +1,4 @@
+# Name,  Type, SubType, Offset,  Size,   Flags
+nvs,     data, nvs,     0x9000,  0x7000,
+factory, app,  factory, 0x10000, 2M,
+spiffs,  data, spiffs,  ,        2M,