Added keyboard_test example

examples/keyboard_test/src/main.rs

@@ -0,0 +1,63 @@
+#![no_std]
+#![no_main]
+
+use core::panic::PanicInfo;
+
+use esp_hal::main;
+use esp_println::println;
+
+#[panic_handler]
+fn panic(info: &PanicInfo) -> ! {
+    println!("{info}");
+    esp_hal::system::software_reset()
+}
+
+esp_bootloader_esp_idf::esp_app_desc!();
+
+#[main]
+fn entrypoint() -> ! {
+    _main();
+    println!("main exited, entering infinite loop");
+    loop {}
+}
+
+#[allow(static_mut_refs)]
+fn _main() {
+    let peripherals = esp_hal::init(esp_hal::Config::default());
+
+    let mut keyboard = cardputer_bsc_nostd::keyboard::Keyboard::new(
+        peripherals.GPIO8,
+        peripherals.GPIO9,
+        peripherals.GPIO11,
+        peripherals.GPIO13,
+        peripherals.GPIO15,
+        peripherals.GPIO3,
+        peripherals.GPIO4,
+        peripherals.GPIO5,
+        peripherals.GPIO6,
+        peripherals.GPIO7,
+    );
+
+    loop {
+        keyboard.scan();
+        let key_set = keyboard.pressed_keys();
+        if !key_set.is_none() {
+            for &(key_name, key) in cardputer_bsc_nostd::keyboard::Key::flags() {
+                if key_set.contains(key) {
+                    println!("Pressed {key_name}");
+                }
+            }
+        }
+        keyboard.clear_pressed_keys();
+        let key_set = keyboard.released_keys();
+        if !key_set.is_none() {
+            for &(key_name, key) in cardputer_bsc_nostd::keyboard::Key::flags() {
+                if key_set.contains(key) {
+                    println!("Released {key_name}");
+                }
+            }
+        }
+        keyboard.clear_released_keys();
+        esp_hal::delay::Delay::new().delay_millis(10);
+    }
+}