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-rw-r--r--docs/source/quick_start/other_chip.rst1
1 files changed, 1 insertions, 0 deletions
diff --git a/docs/source/quick_start/other_chip.rst b/docs/source/quick_start/other_chip.rst
index 6bf69562..c7433cc9 100644
--- a/docs/source/quick_start/other_chip.rst
+++ b/docs/source/quick_start/other_chip.rst
@@ -45,6 +45,7 @@ USB Host 移植要点
define exported symbol __usbh_class_info_end__ = end of region CHERRYUSB_RAM + 1;
place in CHERRYUSB_RAM { section .usbh_class_info };
+ keep { section .usbh_class_info};
- 编译使用。各个 class 如何使用,参考 demo 下的 `usb_host.c` 文件