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Examples/Arduboy-Tutorials/demo3/Cargo.toml

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+[package]
+name = "demo3"
+version = "0.1.0"
+authors = ["ZennDev <zenndev@protonmail.com>"]
+edition = "2021"
+
+[lib]
+crate-type = ["staticlib"]
+
+[dependencies]
+arduboy-rust = "1.0.0"

Examples/Arduboy-Tutorials/demo3/src/lib.rs

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+#![no_std]
+//Include the Arduboy Library
+//Initialize the arduboy object
+use arduboy_rust::prelude::*;
+//Initialize our counter variable
+#[allow(non_upper_case_globals)]
+static mut counter: c_int = 0;
+//The setup() function runs once when you turn your Arduboy on
+#[no_mangle]
+pub unsafe extern "C" fn setup() {
+    //Start the Arduboy properly and display the Arduboy logo
+    arduboy.begin();
+    //Get rid of the Arduboy logo and clear the screen
+    arduboy.clear();
+    //Assign our counter variable to be equal to 0
+    counter = 0;
+    //Set framerate to 30
+    arduboy.set_frame_rate(30);
+}
+//The loop() function repeats forever after setup() is done
+#[no_mangle]
+#[export_name = "loop"]
+pub unsafe extern "C" fn loop_() {
+    //Skip cycles not in the framerate
+    if !arduboy.next_frame() {
+        return;
+    }
+    //Clear whatever is printed on the screen
+    arduboy.clear();
+    //Move the cursor to the position 30, 30 of the screen
+    arduboy.set_cursor(0, 0);
+    //Increase counter's value by 1
+    counter += 1;
+    //Print out the value of counter
+    arduboy.print(counter);
+    //Refresh the screen to show whatever's printed to it
+    arduboy.display();
+}