From 5d1cff57f9f5acd740a8b5f8c941beefdcc00176 Mon Sep 17 00:00:00 2001
From: "Matthias P. Braendli" <matthias.braendli@mpb.li>
Date: Sun, 28 Jun 2020 16:42:21 +0200
Subject: sw: configure si5351

---
 .../examples/stm32f30x-i2c/src/main.rs             | 52 ++++++++++++++++++++++
 1 file changed, 52 insertions(+)
 create mode 100644 sw/deps/hd44780-driver/examples/stm32f30x-i2c/src/main.rs

(limited to 'sw/deps/hd44780-driver/examples/stm32f30x-i2c/src/main.rs')

diff --git a/sw/deps/hd44780-driver/examples/stm32f30x-i2c/src/main.rs b/sw/deps/hd44780-driver/examples/stm32f30x-i2c/src/main.rs
new file mode 100644
index 0000000..3ecfafd
--- /dev/null
+++ b/sw/deps/hd44780-driver/examples/stm32f30x-i2c/src/main.rs
@@ -0,0 +1,52 @@
+#![no_std]
+#![no_main]
+
+extern crate panic_halt;
+
+use core::fmt::Write;
+use cortex_m_rt::entry;
+use hal::prelude::*;
+use hal::flash::FlashExt;
+use hal::i2c::I2c;
+use hd44780_driver::{Cursor, CursorBlink, Display, DisplayMode, HD44780};
+
+// Connections:
+// VSS: GND
+// VDD: 5V
+// SCL: PB6
+// SDA: PB9
+// I2C address : 0x3F
+
+const I2C_ADDRESS: u8 = 0x3F;
+
+#[entry]
+fn main() -> ! {
+    let cp = cortex_m::Peripherals::take().unwrap();
+    let dp = hal::stm32f30x::Peripherals::take().unwrap();
+
+    let mut flash = dp.FLASH.constrain();
+    let mut rcc = dp.RCC.constrain();
+    let mut gpiob = dp.GPIOB.split(&mut rcc.ahb);
+
+    let clocks = rcc.cfgr.freeze(&mut flash.acr);
+    let delay = hal::delay::Delay::new(cp.SYST, clocks);
+
+    let scl = gpiob.pb6.into_af4(&mut gpiob.moder, &mut gpiob.afrl);
+    let sda = gpiob.pb9.into_af4(&mut gpiob.moder, &mut gpiob.afrh);
+
+    let i2c = I2c::i2c1(dp.I2C1, (scl, sda), 400.khz(), clocks, &mut rcc.apb1);
+
+    let mut lcd = HD44780::new_i2c(i2c, I2C_ADDRESS, delay);
+    lcd.reset();
+    lcd.clear();
+    lcd.set_display_mode(
+        DisplayMode {
+            display: Display::On,
+            cursor_visibility: Cursor::Visible,
+            cursor_blink: CursorBlink::On,
+        }
+    );
+    let _ = lcd.write_str("Hello, world!");
+
+    loop {}
+}
-- 
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