feat(school_stm32): 添加基础的 STM32F103RCT6 项目结构

- 创建了项目的基本目录结构和文件
- 添加了 CMakeLists.txt 和 Makefile 构建配置
- 创建了 main.c 文件，实现了简单的 LED 闪烁和按键检测功能
- 集成了 SEGGER RTT 库
- 添加了 .gitignore 文件，排除了不必要的生成文件

libs/ge_interface/ge_input.c

@@ -0,0 +1,88 @@
+#include <main.h>
+#include "ge_interface.h"
+#include "include/ge_kfifo.h"
+
+#define SCAN_BTN(lnum, hnum) do { \
+        /*GE_SET_OFF(KEY_L ## hnum);*/ \
+        if (GE_IS_BIN_PRESSD(H ## hnum)) \
+        event.num = GE_ITYPE_KEY_L ## lnum ## H ## hnum, \
+        ctx->func_send(ctx, event); \
+    } while(0)
+
+void input_btn_func(ge_input_t* ctx) {
+    ge_input_event_t event;
+
+    if (GE_IS_BIN_PRESSD(1)) event.num = GE_ITYPE_KEY_1, ctx->func_send(ctx, event);
+    if (GE_IS_BIN_PRESSD(2)) event.num = GE_ITYPE_KEY_2, ctx->func_send(ctx, event);
+    if (GE_IS_BIN_PRESSD(3)) event.num = GE_ITYPE_KEY_3, ctx->func_send(ctx, event);
+    if (GE_IS_BIN_PRESSD(4)) event.num = GE_ITYPE_KEY_4, ctx->func_send(ctx, event);
+
+    GE_SET_OFF(KEY_L1);
+    SCAN_BTN(1, 1);
+    SCAN_BTN(1, 2);
+    SCAN_BTN(1, 3);
+    SCAN_BTN(1, 4);
+    HAL_Delay(10);
+    GE_SET_ON(KEY_L1);
+
+    GE_SET_OFF(KEY_L2);
+    SCAN_BTN(2, 1);
+    SCAN_BTN(2, 2);
+    SCAN_BTN(2, 3);
+    SCAN_BTN(2, 4);
+    HAL_Delay(10);
+    GE_SET_ON(KEY_L2);
+
+    GE_SET_OFF(KEY_L3);
+    SCAN_BTN(3, 1);
+    SCAN_BTN(3, 2);
+    SCAN_BTN(3, 3);
+    SCAN_BTN(3, 4);
+    HAL_Delay(10);
+    GE_SET_ON(KEY_L3);
+
+    GE_SET_OFF(KEY_L4);
+    SCAN_BTN(4, 1);
+    SCAN_BTN(4, 2);
+    SCAN_BTN(4, 3);
+    SCAN_BTN(4, 4);
+    HAL_Delay(10);
+    GE_SET_ON(KEY_L4);
+}
+
+DECLARE_GE_KFIFO(ge_input_fifo, ge_input_event_t, 16, ge_input_fifo_t);
+
+int ge_input_send (ge_input_t* ctx, ge_input_event_t event) {
+    struct ge_input_fifo_t* fifo = (struct ge_input_fifo_t*)ctx->context;
+    if (ge_kfifo_is_full(fifo)) {
+        return -1;
+    }
+    ge_kfifo_put(fifo, event);
+    return 0;
+}
+
+int ge_input_peek (ge_input_t* ctx, ge_input_event_t* event) {
+    struct ge_input_fifo_t* fifo = (struct ge_input_fifo_t*)ctx->context;
+    if (ge_kfifo_is_empty(fifo)) {
+        return -1;
+    }
+    ge_kfifo_peek(fifo, event);
+    return 0;
+}
+
+int ge_input_recv (ge_input_t* ctx, ge_input_event_t* event) {
+    struct ge_input_fifo_t* fifo = (struct ge_input_fifo_t*)ctx->context;
+    if (ge_kfifo_is_empty(fifo)) {
+        return -1;
+    }
+    ge_kfifo_get(fifo, event);
+    return 0;
+}
+
+ge_input_t ge_input = {
+    .context = &ge_input_fifo,
+
+    .func_send = ge_input_send,
+    .func_peek = ge_input_peek,
+    .func_recv = ge_input_recv,
+};