实现自动按键功能

ESP32/my_usb_project/rust_app/src/lib.rs

@@ -4,6 +4,7 @@
 //! that interacts with the USB HID interface implemented in C/TinyUSB.
 
 #![no_std]
+#![no_main]
 
 use esp_backtrace as _;
 
@@ -17,23 +18,40 @@ fn panic(_info: &core::panic::PanicInfo) -> ! {
 // HID 键码常量
 const HID_KEY_A: u8 = 0x04;
 const REPORT_ID_KEYBOARD: u8 = 1;
-const PD_MS_TO_TICKS: u32 = 1;
 
 // FFI 函数声明
 extern "C" {
     fn rust_is_usb_mounted() -> bool;
     fn rust_send_keyboard_report(report_id: u8, modifier: u8, keycode: *const u8);
     fn rust_vTaskDelay(xTicksToDelay: u32);
+    fn rust_esp_log_i(tag: *const u8, format: *const u8);
+}
+
+/// 日志函数
+fn log_info(message: &'static str) {
+    // 转换 Rust 静态字符串为 C 字符串
+    let tag = b"RustApp\0";
+    
+    // 直接使用静态字符串的指针，确保它在整个程序生命周期内有效
+    // 注意：Rust 的字符串字面量已经以 null 结尾
+    let msg_ptr = message.as_ptr();
+    
+    unsafe {
+        rust_esp_log_i(tag.as_ptr(), msg_ptr);
+    }
 }
 
 #[no_mangle]
 extern "C" fn rust_app_main() {
     // 初始化代码
+    log_info("Rust app started");
     loop {
+        log_info("Sending random key...");
         send_random_key();
-        // 等待 5 秒
+        // 等待 5 秒 (5000ms / 10ms per tick = 500 ticks)
+        log_info("Waiting for 5 seconds...");
         unsafe {
-            rust_vTaskDelay(5000 * PD_MS_TO_TICKS);
+            rust_vTaskDelay(500);
         }
     }
 }
@@ -51,11 +69,13 @@ fn send_random_key() {
             rust_is_usb_mounted()
         };
         if mounted {
+            log_info("USB mounted!");
             break;
         }
-        // 等待 100ms
+        // 等待 100ms (100ms / 10ms per tick = 10 ticks)
+        log_info("USB not mounted yet");
         unsafe {
-            rust_vTaskDelay(100 * PD_MS_TO_TICKS);
+            rust_vTaskDelay(10);
         }
     }
 
@@ -66,20 +86,25 @@ fn send_random_key() {
         
         // 发送随机键按下事件
         let keycode = [random_key, 0, 0, 0, 0, 0];
+        log_info("Sending key press event");
         unsafe {
             rust_send_keyboard_report(REPORT_ID_KEYBOARD, 0, keycode.as_ptr());
         }
 
-        // 等待 50ms
+        // 等待 50ms (50ms / 10ms per tick = 5 ticks)
+        log_info("Waiting for 50ms...");
         unsafe {
-            rust_vTaskDelay(50 * PD_MS_TO_TICKS);
+            rust_vTaskDelay(5);
         }
 
         // 发送随机键释放事件
         let keycode = [0, 0, 0, 0, 0, 0];
+        log_info("Sending key release event");
         unsafe {
             rust_send_keyboard_report(REPORT_ID_KEYBOARD, 0, keycode.as_ptr());
         }
+    } else {
+        log_info("USB not mounted after 10 attempts");
     }
 }