Add gpio output open drain test

Author: Sh3Rm4n

testsuite/tests/gpio_output_open_drain.rs

@@ -0,0 +1,61 @@
+#![no_std]
+#![no_main]
+
+use defmt_rtt as _;
+use panic_probe as _;
+
+
+use stm32f3xx_hal as hal;
+
+use hal::gpio::{Input, OpenDrain, Output, PXx};
+
+struct State {
+    input_pin: PXx<Input>,
+    output_pin: PXx<Output<OpenDrain>>,
+}
+
+#[defmt_test::tests]
+mod tests {
+    use defmt::{assert, unwrap};
+    use stm32f3xx_hal::{pac, prelude::*};
+    use cortex_m::asm;
+
+    // Test the defaults with no configuration
+    #[init]
+    fn init() -> super::State {
+        let dp = unwrap!(pac::Peripherals::take());
+
+        let mut rcc = dp.RCC.constrain();
+        let mut gpioc = dp.GPIOC.split(&mut rcc.ahb);
+
+        let mut input_pin = gpioc
+            .pc0
+            .into_floating_input(&mut gpioc.moder, &mut gpioc.pupdr);
+        input_pin.internal_pull_up(&mut gpioc.pupdr, true);
+        let input_pin = input_pin.downgrade().downgrade();
+        let output_pin = gpioc
+            .pc1
+            .into_open_drain_output(&mut gpioc.moder, &mut gpioc.otyper)
+            .downgrade()
+            .downgrade();
+
+        super::State {
+            input_pin,
+            output_pin,
+        }
+    }
+
+    #[test]
+    fn set_low_is_low(state: &mut super::State) {
+        unwrap!(state.output_pin.set_low());
+        assert!(unwrap!(state.output_pin.is_set_low()));
+        assert!(unwrap!(state.input_pin.is_low()));
+    }
+
+    #[test]
+    fn set_high_is_high(state: &mut super::State) {
+        unwrap!(state.output_pin.set_high());
+        assert!(unwrap!(state.output_pin.is_set_high()));
+        assert!(unwrap!(state.input_pin.is_high()));
+    }
+}