7 files changed, 709 insertions, 0 deletions
diff --git a/examples/stm32f1_bluepill_blinky/.cargo/config.toml b/examples/stm32f1_bluepill_blinky/.cargo/config.toml
new file mode 100644
index 0000000..bca7d2d
--- /dev/null
+++ b/examples/stm32f1_bluepill_blinky/.cargo/config.toml
@@ -0,0 +1,40 @@
+[target.thumbv7m-none-eabi]
+# uncomment this to make `cargo run` execute programs on QEMU
+# runner = "qemu-system-arm -cpu cortex-m3 -machine lm3s6965evb -nographic -semihosting-config enable=on,target=native -kernel"
+
+[target.'cfg(all(target_arch = "arm", target_os = "none"))']
+# uncomment ONE of these three option to make `cargo run` start a GDB session
+# which option to pick depends on your system
+# runner = "arm-none-eabi-gdb -q -x openocd.gdb"
+# runner = "gdb-multiarch -q -x openocd.gdb"
+# runner = "gdb -q -x openocd.gdb"
+
+rustflags = [
+  # This is needed if your flash or ram addresses are not aligned to 0x10000 in memory.x
+  # See https://github.com/rust-embedded/cortex-m-quickstart/pull/95
+  "-C", "link-arg=--nmagic",
+
+  # LLD (shipped with the Rust toolchain) is used as the default linker
+  "-C", "link-arg=-Tlink.x",
+
+  # if you run into problems with LLD switch to the GNU linker by commenting out
+  # this line
+  # "-C", "linker=arm-none-eabi-ld",
+
+  # if you need to link to pre-compiled C libraries provided by a C toolchain
+  # use GCC as the linker by commenting out both lines above and then
+  # uncommenting the three lines below
+  # "-C", "linker=arm-none-eabi-gcc",
+  # "-C", "link-arg=-Wl,-Tlink.x",
+  # "-C", "link-arg=-nostartfiles",
+]
+
+[build]
+# Pick ONE of these compilation targets
+# target = "thumbv6m-none-eabi"        # Cortex-M0 and Cortex-M0+
+target = "thumbv7m-none-eabi"        # Cortex-M3
+# target = "thumbv7em-none-eabi"       # Cortex-M4 and Cortex-M7 (no FPU)
+# target = "thumbv7em-none-eabihf"     # Cortex-M4F and Cortex-M7F (with FPU)
+# target = "thumbv8m.base-none-eabi"   # Cortex-M23
+# target = "thumbv8m.main-none-eabi"   # Cortex-M33 (no FPU)
+# target = "thumbv8m.main-none-eabihf" # Cortex-M33 (with FPU)
diff --git a/examples/stm32f1_bluepill_blinky/Cargo.lock b/examples/stm32f1_bluepill_blinky/Cargo.lock
new file mode 100644
index 0000000..8e083b0
--- /dev/null
+++ b/examples/stm32f1_bluepill_blinky/Cargo.lock
@@ -0,0 +1,483 @@
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+# It is not intended for manual editing.
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+ "cortex-m-rt",
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+ "embedded-hal 0.2.7",
+ "fugit",
+ "fugit-timer",
+ "nb 1.1.0",
+ "stm32-usbd",
+ "stm32f1",
+ "void",
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+dependencies = [
+ "vcell",
+]
diff --git a/examples/stm32f1_bluepill_blinky/Cargo.toml b/examples/stm32f1_bluepill_blinky/Cargo.toml
new file mode 100644
index 0000000..a01a215
--- /dev/null
+++ b/examples/stm32f1_bluepill_blinky/Cargo.toml
@@ -0,0 +1,55 @@
+[package]
+name = "bluepill_blinky"
+version = "0.1.0"
+
+edition = "2021"
+authors = [
+    "Ronald Weber <ronaldxweber@gmail.com>",
+    "Simsys <winfried.simon@gmail.com>",
+]
+description = "Example blinky for BluePill"
+license = "MIT OR Apache-2.0"
+readme = "README.md"
+
+[workspace]
+
+[dependencies.rtic]
+path = "../../rtic"
+version = "2.1.1"
+features = ["thumbv7-backend"]
+
+[dependencies.rtic-monotonics]
+path = "../../rtic-monotonics"
+version = "2.0.3"
+features = ["cortex-m-systick"]
+
+[dependencies.cortex-m]
+version = "0.7.7"
+features = ["critical-section-single-core"]
+
+[dependencies]
+embedded-hal = "1.0.0"
+panic-rtt-target = { version = "0.2.0" }
+rtt-target = { version = "0.6.1" }
+
+[dependencies.stm32f1xx-hal]
+version = "0.10.0"
+features = ["rt", "stm32f103", "medium"]
+
+# this lets you use `cargo fix`!
+[[bin]]
+name = "bluepill_blinky"
+test = false
+bench = false
+
+[profile.dev]
+opt-level = 1
+codegen-units = 16
+debug = true
+lto = false
+
+[profile.release]
+opt-level = "s"   # optimize for size
+codegen-units = 1 # better optimizations
+debug = true      # symbols are nice and they don't increase the size on Flash
+lto = true        # better optimizations
diff --git a/examples/stm32f1_bluepill_blinky/Embed.toml b/examples/stm32f1_bluepill_blinky/Embed.toml
new file mode 100644
index 0000000..89c6ebe
--- /dev/null
+++ b/examples/stm32f1_bluepill_blinky/Embed.toml
@@ -0,0 +1,8 @@
+[default.general]
+chip = "stm32f103c8"
+
+[default.rtt]
+enabled = true
+
+[default.gdb]
+enabled = false
diff --git a/examples/stm32f1_bluepill_blinky/README.md b/examples/stm32f1_bluepill_blinky/README.md
new file mode 100644
index 0000000..793de92
--- /dev/null
+++ b/examples/stm32f1_bluepill_blinky/README.md
@@ -0,0 +1,45 @@
+# STM32F103 Bluepill RTIC Blink example
+
+Working example of simple LED blinking application for popular Bluepill boards based on the STM32F103C8 chip. Example uses schedule API and peripherials access. You will need `stlink v2` tool or other programmer to flash the board.
+
+## How-to
+
+### Terminal workflow
+
+Rust embedded relies heavily on `terminal workflow`, you will enter commands in the terminal. This can be strange at first, but this enables usage of great things like continious integration tools.
+
+For Mac OS X consider using `iTerm2` instead of Terminal application.
+For Windows consider using `powershell` (win + r -> powershell -> enter -> cd examples\stm3f1_bluepill_blinky)
+
+### Build
+
+Run `cargo build` to compile the code. If you run it for the first time, it will take some time to download and compile dependencies. After that, you will see comething like:
+
+```shell
+$ cargo build
+Finished dev [optimized + debuginfo] target(s) in 0.10s
+```
+
+If you see warnings, feel free to ask for help in chat or issues of this repo.
+
+### Connect the board
+
+You need to connect you bluepill board to ST-Link and connect pins:
+
+| BOARD |    | ST-LINK |
+|-------|----|---------|
+| GND   | -> | GND     |
+| 3.3V  | -> | 3.3V    |
+| SWCLK | -> | SWCLK   |
+| SWDIO | -> | SWDIO   |
+
+Plug in ST-Link to USB port and wait it to initialize.
+
+### Flashing and running
+
+Install `cargo embed` from probe-rs tools by following the instructions at https://probe.rs/docs/getting-started/installation/.
+Flashing with a standard STLink v2 is easy with `cargo-embed`:
+
+```shell
+$ cargo embed --release
+```
diff --git a/examples/stm32f1_bluepill_blinky/memory.x b/examples/stm32f1_bluepill_blinky/memory.x
new file mode 100644
index 0000000..d1d7841
--- /dev/null
+++ b/examples/stm32f1_bluepill_blinky/memory.x
@@ -0,0 +1,5 @@
+MEMORY
+{
+    FLASH : ORIGIN = 0x08000000, LENGTH = 64K
+    RAM : ORIGIN = 0x20000000, LENGTH = 20K
+}
diff --git a/examples/stm32f1_bluepill_blinky/src/main.rs b/examples/stm32f1_bluepill_blinky/src/main.rs
new file mode 100644
index 0000000..08cf1cc
--- /dev/null
+++ b/examples/stm32f1_bluepill_blinky/src/main.rs
@@ -0,0 +1,73 @@
+#![deny(unsafe_code)]
+#![deny(warnings)]
+#![no_main]
+#![no_std]
+
+use panic_rtt_target as _;
+use rtic::app;
+use rtic_monotonics::systick::prelude::*;
+use rtt_target::{rprintln, rtt_init_print};
+use stm32f1xx_hal::gpio::{Output, PinState, PushPull, PC13};
+use stm32f1xx_hal::prelude::*;
+
+systick_monotonic!(Mono, 1000);
+
+#[app(device = stm32f1xx_hal::pac, peripherals = true, dispatchers = [SPI1])]
+mod app {
+    use super::*;
+
+    #[shared]
+    struct Shared {}
+
+    #[local]
+    struct Local {
+        led: PC13<Output<PushPull>>,
+        state: bool,
+    }
+
+    #[init]
+    fn init(cx: init::Context) -> (Shared, Local) {
+        // Setup clocks
+        let mut flash = cx.device.FLASH.constrain();
+        let rcc = cx.device.RCC.constrain();
+
+        // Initialize the systick interrupt & obtain the token to prove that we did
+        Mono::start(cx.core.SYST, 36_000_000);
+
+        rtt_init_print!();
+        rprintln!("init");
+
+        let _clocks = rcc
+            .cfgr
+            .use_hse(8.MHz())
+            .sysclk(36.MHz())
+            .pclk1(36.MHz())
+            .freeze(&mut flash.acr);
+
+        // Setup LED
+        let mut gpioc = cx.device.GPIOC.split();
+        let led = gpioc
+            .pc13
+            .into_push_pull_output_with_state(&mut gpioc.crh, PinState::Low);
+
+        // Schedule the blinking task
+        blink::spawn().ok();
+
+        (Shared {}, Local { led, state: false })
+    }
+
+    #[task(local = [led, state])]
+    async fn blink(cx: blink::Context) {
+        loop {
+            rprintln!("blink");
+            if *cx.local.state {
+                cx.local.led.set_high();
+                *cx.local.state = false;
+            } else {
+                cx.local.led.set_low();
+                *cx.local.state = true;
+            }
+            Mono::delay(1000.millis()).await;
+        }
+    }
+}