喷淋器 P0 功能实现

2026-09-09 15:03:50 +08:00
parent b880b2e62b
commit 866b522c59
30 changed files with 3773 additions and 25 deletions
@@ -0,0 +1,57 @@
+/******************************************************************************
+ * @file    app_defer.c
+ * @brief   ISR→任务上下文的延后执行标志位实现
+ * @author  cyWu <1917507415@qq.com>
+ * @date    2026.08.31
+ * @version V1.0.0，首次发布
+ ******************************************************************************/
+
+#include "system/includes.h"
+#include "app_defer.h"
+
+/** 位掩码，volatile：request() 在中断上下文写，take()/is_pending()/cancel()
+ *  在任务上下文读写，两侧都用 local_irq_disable/enable 包一下读改写，
+ *  避免"任务侧正在清 A 位时中断侧设 B 位"这种读改写竞态把 B 位冲丢。 */
+static volatile uint8_t s_flags;
+
+void app_defer_request(AppDeferBit_t bit)
+{
+    if (bit >= APP_DEFER_MAX) {
+        return;
+    }
+    local_irq_disable();
+    s_flags |= (uint8_t)(1u << bit);
+    local_irq_enable();
+}
+
+uint8_t app_defer_take(AppDeferBit_t bit)
+{
+    uint8_t was_set;
+
+    if (bit >= APP_DEFER_MAX) {
+        return 0;
+    }
+    local_irq_disable();
+    was_set = (s_flags & (uint8_t)(1u << bit)) ? 1 : 0;
+    s_flags &= (uint8_t)~(1u << bit);
+    local_irq_enable();
+    return was_set;
+}
+
+uint8_t app_defer_is_pending(AppDeferBit_t bit)
+{
+    if (bit >= APP_DEFER_MAX) {
+        return 0;
+    }
+    return (s_flags & (uint8_t)(1u << bit)) ? 1 : 0;
+}
+
+void app_defer_cancel(AppDeferBit_t bit)
+{
+    if (bit >= APP_DEFER_MAX) {
+        return;
+    }
+    local_irq_disable();
+    s_flags &= (uint8_t)~(1u << bit);
+    local_irq_enable();
+}