添加按键高阻态、使飞控进入BOOT、擦除flash

app/drivers/pin_io/pin_io.c

@@ -83,6 +83,20 @@ void pin_cfg_output(const cfg_board_pin_io_t *pin)
     gpio_config(&io_conf);
 }
 
+
+
+void gpio_to_high_z(const cfg_board_pin_io_t *pin)
+{
+    gpio_config_t io = {
+        .pin_bit_mask = 1ULL << pin->pin,
+        .mode = GPIO_MODE_DISABLE,        // 或 GPIO_MODE_INPUT（都不会驱动外部）
+        .pull_up_en = GPIO_PULLUP_DISABLE,
+        .pull_down_en = GPIO_PULLDOWN_DISABLE,
+        .intr_type = GPIO_INTR_DISABLE,
+    };
+    gpio_config(&io);
+}
+
 /**
  * @brief IO 基本操作：设置使输出是否为有效的电平
  *