SPI example - sd card (#42)

Co-authored-by: Nando Bongers <[email protected]>

Author: NandoBongers

Cargo.toml

@@ -62,6 +62,7 @@ rtt-target = { version = "0.3.0", features = ["cortex-m"] }
 panic-rtt-target = { version = "0.1.1", features = ["cortex-m"] }
 mpu6050 = "0.1.4"
 bme680 = "0.6.0"
+embedded-sdmmc = "0.3.0"
 
 #TODO: Separate feature sets
 [features]

examples/spi-sd.rs

@@ -0,0 +1,74 @@
+// This example uses SPI to initialize an SD card.
+
+#![no_main]
+#![no_std]
+
+extern crate embedded_sdmmc;
+
+use hal::gpio::gpiob::PB14;
+use hal::gpio::gpiob::PB15;
+use hal::gpio::gpiof::PF8;
+use hal::gpio::gpiof::PF9;
+use hal::gpio::Alternate;
+use hal::gpio::AF5;
+use hal::prelude::*;
+use hal::rcc::Config;
+use hal::spi;
+use hal::stm32;
+use hal::stm32::Peripherals;
+use hal::timer::Timer;
+use stm32g4xx_hal as hal;
+
+use embedded_sdmmc::{
+    Block, BlockCount, BlockDevice, BlockIdx, Controller, Error, Mode, TimeSource, Timestamp,
+    VolumeIdx,
+};
+
+use cortex_m_rt::entry;
+use log::info;
+
+#[macro_use]
+mod utils;
+
+#[entry]
+fn main() -> ! {
+    let dp = Peripherals::take().unwrap();
+    let rcc = dp.RCC.constrain();
+    let mut rcc = rcc.freeze(Config::hsi());
+    let gpiob = dp.GPIOB.split(&mut rcc);
+    let gpiof = dp.GPIOF.split(&mut rcc);
+
+    let cs = {
+        let mut cs = gpiof.pf8.into_push_pull_output();
+        cs.set_high().unwrap();
+        cs
+    };
+
+    let sck: PF9<Alternate<AF5>> = gpiof.pf9.into_alternate();
+    let miso: PB14<Alternate<AF5>> = gpiob.pb14.into_alternate();
+    let mosi: PB15<Alternate<AF5>> = gpiob.pb15.into_alternate();
+
+    let mut spi = dp
+        .SPI2
+        .spi((sck, miso, mosi), spi::MODE_0, 400.khz(), &mut rcc);
+
+    struct Clock;
+
+    impl TimeSource for Clock {
+        fn get_timestamp(&self) -> Timestamp {
+            Timestamp {
+                year_since_1970: 0,
+                zero_indexed_month: 0,
+                zero_indexed_day: 0,
+                hours: 0,
+                minutes: 0,
+                seconds: 0,
+            }
+        }
+    }
+
+    let mut cont = embedded_sdmmc::Controller::new(embedded_sdmmc::SdMmcSpi::new(spi, cs), Clock);
+
+    cont.device().init();
+    loop {}
+}