Rust: add print

Author: vshymanskyy

examples_pio/Wasm_Advanced/wasm_apps/rust/app.rs

@@ -5,11 +5,13 @@ mod arduino;
 use arduino::*;
 
 struct App {
-  led: u32,
+    led: u32,
 }
 
 impl App {
     fn new() -> Self {
+        println("Rust is running");
+
         let led = getPinLED();
         pinMode(led, OUTPUT);
         Self { led }

examples_pio/Wasm_Advanced/wasm_apps/rust/app.wasm

@@ -1,22 +1,27 @@
 unsigned char app_wasm[] = {
   0x00, 0x61, 0x73, 0x6d, 0x01, 0x00, 0x00, 0x00, 0x01, 0x11, 0x04, 0x60,
   0x02, 0x7f, 0x7f, 0x00, 0x60, 0x00, 0x00, 0x60, 0x01, 0x7f, 0x00, 0x60,
-  0x00, 0x01, 0x7f, 0x02, 0x4e, 0x04, 0x07, 0x61, 0x72, 0x64, 0x75, 0x69,
+  0x00, 0x01, 0x7f, 0x02, 0x5e, 0x05, 0x07, 0x61, 0x72, 0x64, 0x75, 0x69,
   0x6e, 0x6f, 0x05, 0x64, 0x65, 0x6c, 0x61, 0x79, 0x00, 0x02, 0x07, 0x61,
   0x72, 0x64, 0x75, 0x69, 0x6e, 0x6f, 0x07, 0x70, 0x69, 0x6e, 0x4d, 0x6f,
   0x64, 0x65, 0x00, 0x00, 0x07, 0x61, 0x72, 0x64, 0x75, 0x69, 0x6e, 0x6f,
   0x0c, 0x64, 0x69, 0x67, 0x69, 0x74, 0x61, 0x6c, 0x57, 0x72, 0x69, 0x74,
   0x65, 0x00, 0x00, 0x07, 0x61, 0x72, 0x64, 0x75, 0x69, 0x6e, 0x6f, 0x09,
-  0x67, 0x65, 0x74, 0x50, 0x69, 0x6e, 0x4c, 0x45, 0x44, 0x00, 0x03, 0x03,
-  0x02, 0x01, 0x01, 0x05, 0x03, 0x01, 0x00, 0x01, 0x06, 0x0d, 0x02, 0x7f,
-  0x00, 0x41, 0x80, 0x20, 0x0b, 0x7f, 0x00, 0x41, 0x80, 0x20, 0x0b, 0x07,
-  0x2e, 0x04, 0x06, 0x6d, 0x65, 0x6d, 0x6f, 0x72, 0x79, 0x02, 0x00, 0x0a,
-  0x5f, 0x5f, 0x64, 0x61, 0x74, 0x61, 0x5f, 0x65, 0x6e, 0x64, 0x03, 0x00,
-  0x0b, 0x5f, 0x5f, 0x68, 0x65, 0x61, 0x70, 0x5f, 0x62, 0x61, 0x73, 0x65,
-  0x03, 0x01, 0x06, 0x5f, 0x73, 0x74, 0x61, 0x72, 0x74, 0x00, 0x04, 0x0a,
-  0x2a, 0x01, 0x28, 0x01, 0x01, 0x7f, 0x10, 0x03, 0x22, 0x00, 0x41, 0x01,
-  0x10, 0x01, 0x03, 0x40, 0x20, 0x00, 0x41, 0x01, 0x10, 0x02, 0x41, 0xe4,
-  0x00, 0x10, 0x00, 0x20, 0x00, 0x41, 0x00, 0x10, 0x02, 0x41, 0x84, 0x07,
-  0x10, 0x00, 0x0c, 0x00, 0x0b, 0x00, 0x0b
+  0x67, 0x65, 0x74, 0x50, 0x69, 0x6e, 0x4c, 0x45, 0x44, 0x00, 0x03, 0x07,
+  0x61, 0x72, 0x64, 0x75, 0x69, 0x6e, 0x6f, 0x05, 0x70, 0x72, 0x69, 0x6e,
+  0x74, 0x00, 0x00, 0x03, 0x02, 0x01, 0x01, 0x05, 0x03, 0x01, 0x00, 0x01,
+  0x06, 0x0d, 0x02, 0x7f, 0x00, 0x41, 0x90, 0x10, 0x0b, 0x7f, 0x00, 0x41,
+  0x90, 0x10, 0x0b, 0x07, 0x2e, 0x04, 0x06, 0x6d, 0x65, 0x6d, 0x6f, 0x72,
+  0x79, 0x02, 0x00, 0x0a, 0x5f, 0x5f, 0x64, 0x61, 0x74, 0x61, 0x5f, 0x65,
+  0x6e, 0x64, 0x03, 0x00, 0x0b, 0x5f, 0x5f, 0x68, 0x65, 0x61, 0x70, 0x5f,
+  0x62, 0x61, 0x73, 0x65, 0x03, 0x01, 0x06, 0x5f, 0x73, 0x74, 0x61, 0x72,
+  0x74, 0x00, 0x05, 0x0a, 0x38, 0x01, 0x36, 0x01, 0x01, 0x7f, 0x41, 0x81,
+  0x10, 0x41, 0x0f, 0x10, 0x04, 0x41, 0x80, 0x10, 0x41, 0x01, 0x10, 0x04,
+  0x10, 0x03, 0x22, 0x00, 0x41, 0x01, 0x10, 0x01, 0x03, 0x40, 0x20, 0x00,
+  0x41, 0x01, 0x10, 0x02, 0x41, 0xe4, 0x00, 0x10, 0x00, 0x20, 0x00, 0x41,
+  0x00, 0x10, 0x02, 0x41, 0x84, 0x07, 0x10, 0x00, 0x0c, 0x00, 0x0b, 0x00,
+  0x0b, 0x0b, 0x17, 0x01, 0x00, 0x41, 0x80, 0x10, 0x0b, 0x10, 0x0a, 0x52,
+  0x75, 0x73, 0x74, 0x20, 0x69, 0x73, 0x20, 0x72, 0x75, 0x6e, 0x6e, 0x69,
+  0x6e, 0x67
 };
-unsigned int app_wasm_len = 223;
+unsigned int app_wasm_len = 278;

examples_pio/Wasm_Advanced/wasm_apps/rust/app.wasm.h

@@ -8,6 +8,8 @@ extern {
   #[link_name = "pinMode"]        fn _pinMode(pin: u32, mode: u32);
   #[link_name = "digitalWrite"]   fn _digitalWrite(pin: u32, value: u32);
   #[link_name = "getPinLED"]      fn _getPinLED() -> u32;
+  #[link_name = "getGreeting"]    fn _getGreeting(utf8: * mut u8, maxlen: usize);
+  #[link_name = "print"]          fn _print(utf8: *const u8, len: usize);
 }
 
 pub static LOW: u32  = 0;
@@ -23,6 +25,17 @@ pub fn pinMode        (pin: u32, mode: u32)   { unsafe { _pinMode(pin, mode) } }
 pub fn digitalWrite   (pin: u32, value: u32)  { unsafe { _digitalWrite(pin, value) } }
 pub fn getPinLED      () -> u32               { unsafe { _getPinLED() } }
 
+pub fn print(string: &str) {
+    unsafe { _print(string.as_ptr(), string.len()) }
+}
+
+pub fn println(string: &str) {
+    print(string);
+    print("\n");
+}
+
+//TODO: getGreeting
+
 #[panic_handler]
 fn handle_panic(_: &core::panic::PanicInfo) -> ! {
     unsafe { core::intrinsics::unreachable() }

examples_pio/Wasm_Advanced/wasm_apps/rust/arduino.rs

@@ -1,7 +1,7 @@
 # Compile
 rustc -O --crate-type=cdylib              \
       --target=wasm32-unknown-unknown     \
-      -C link-arg=-zstack-size=4096       \
+      -C link-arg=-zstack-size=2048       \
       -C link-arg=-s                      \
       -o app.wasm app.rs