From 7403b5e53f903535bef4f4157c5b47dc41df04a5 Mon Sep 17 00:00:00 2001
From: Jakob Dalsgaard <jakob@dalsgaard.net>
Date: Fri, 8 Oct 2021 21:40:40 +0200
Subject: [PATCH] First commit

---
 .cargo/config      | 15 +++++++++++++++
 Cargo.toml         | 20 ++++++++++++++++++++
 build.rs           | 26 ++++++++++++++++++++++++++
 env.sh             |  7 +++++++
 sdkconfig.defaults |  6 ++++++
 src/main.rs        |  4 ++++
 6 files changed, 78 insertions(+)
 create mode 100644 .cargo/config
 create mode 100644 Cargo.toml
 create mode 100644 build.rs
 create mode 100644 env.sh
 create mode 100644 sdkconfig.defaults
 create mode 100644 src/main.rs

diff --git a/.cargo/config b/.cargo/config
new file mode 100644
index 0000000..d84a073
--- /dev/null
+++ b/.cargo/config
@@ -0,0 +1,15 @@
+[build]
+target = "xtensa-esp32-espidf"
+
+[target.xtensa-esp32-espidf]
+linker = "ldproxy"
+
+[unstable]
+build-std = ["std", "panic_abort"]
+build-std-features = ["panic_immediate_abort"]
+configurable-env = true # No longer necessary since 1.56, as it was stabilized: https://github.com/rust-lang/cargo/blob/master/src/cargo/core/features.rs#L698
+extra-link-arg = true   # No longer necessary since 1.56, as it was stabilized: https://github.com/rust-lang/cargo/blob/master/src/cargo/core/features.rs#L695
+
+[env]
+ESP_IDF_SYS_GLOB_BASE = { value = ".", relative = true }
+
diff --git a/Cargo.toml b/Cargo.toml
new file mode 100644
index 0000000..f920ff1
--- /dev/null
+++ b/Cargo.toml
@@ -0,0 +1,20 @@
+[package]
+name = "rusty-espresso"
+version = "0.1.0"
+edition = "2018"
+
+
+
+[features]
+bind = []
+
+[dependencies]
+anyhow = {version = "1", features = ["backtrace"]}
+esp-idf-sys = { version = "0.20" }
+embedded-svc = "0.8.3"
+esp-idf-svc = { version = "0.20", features = ["binstart"] }
+esp-idf-hal = "0.20"
+
+[build-dependencies]
+embuild = "0.24"
+anyhow = "1"
diff --git a/build.rs b/build.rs
new file mode 100644
index 0000000..c69dcc7
--- /dev/null
+++ b/build.rs
@@ -0,0 +1,26 @@
+use std::path::PathBuf;
+
+use embuild::{
+    self, bingen,
+    build::{CfgArgs, LinkArgs},
+    cargo, symgen,
+};
+
+// Necessary because of this issue: https://github.com/rust-lang/cargo/issues/9641
+fn main() -> anyhow::Result<()> {
+    LinkArgs::output_propagated("ESP_IDF")?;
+
+    let cfg = CfgArgs::try_from_env("ESP_IDF")?;
+
+    if cfg.get("esp32s2").is_some() {
+        let ulp_elf = PathBuf::from("ulp").join("rust-esp32-ulp-hello");
+        symgen::run(&ulp_elf, 0x5000_0000)?; // This is where the RTC Slow Mem is mapped within the ESP32-S2 memory space
+        bingen::run(&ulp_elf)?;
+
+        cargo::track_file(ulp_elf);
+    }
+
+    cfg.output();
+
+    Ok(())
+}
diff --git a/env.sh b/env.sh
new file mode 100644
index 0000000..3818eb7
--- /dev/null
+++ b/env.sh
@@ -0,0 +1,7 @@
+#!/bin/bash
+
+export PATH=$HOME/xtensa-esp32-elf-clang/bin:$PATH
+. $HOME/esp/esp-idf/export.sh
+rustup default esp
+
+
diff --git a/sdkconfig.defaults b/sdkconfig.defaults
new file mode 100644
index 0000000..fde0066
--- /dev/null
+++ b/sdkconfig.defaults
@@ -0,0 +1,6 @@
+CONFIG_LWIP_L2_TO_L3_COPY=y
+CONFIG_LWIP_IP_FORWARD=y
+CONFIG_LWIP_IPV4_NAPT=y
+#CONFIG_ESP_SYSTEM_USE_EH_FRAME=y
+#CONFIG_COMPILER_CXX_EXCEPTIONS=y
+
diff --git a/src/main.rs b/src/main.rs
new file mode 100644
index 0000000..7da3a48
--- /dev/null
+++ b/src/main.rs
@@ -0,0 +1,4 @@
+
+fn main() {
+    println!("Hello, world!");
+}