# RTL8721CSM PA\[27 \] SWD\_DATA 設定問題

**URL:** <https://forum.amebaiot.com/t/rtl8721csm-pa-27-swd-data/932>\
**Category:** Peripherals\
**Tags:** 中文, rtl872xd\
**Created:** [November 25, 2021, 3:57am UTC](https://forum.amebaiot.com/t/rtl8721csm-pa-27-swd-data/932 "2021-11-25T03:57:31Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![wswu](https://sea2.discourse-cdn.com/flex016/user_avatar/forum.amebaiot.com/wswu/32/724_2.png) [@wswu](https://forum.amebaiot.com/u/wswu)\
**Post date:** [November 25, 2021, 3:57am UTC](https://forum.amebaiot.com/t/rtl8721csm-pa-27-swd-data/932/1 "2021-11-25T03:57:31Z")

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請教大家如何將  
RTL8721CSM 的 PA[27] SWD\_DATA 設成一般的GPIO

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**Author:** ![wyy](https://avatars.discourse-cdn.com/v4/letter/w/bc8723/32.png) [@wyy](https://forum.amebaiot.com/u/wyy)\
**Post date:** [November 25, 2021, 4:55am UTC](https://forum.amebaiot.com/t/rtl8721csm-pa-27-swd-data/932/2 "2021-11-25T04:55:06Z")

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用 Arduino IDE，pinMode 应该就行。  
用 standard SDK，应该需要先用 sys\_jtag\_off，然后按照其他 GPIO 的做法设置

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<div class="post-metadata">

**Author:** ![wswu](https://sea2.discourse-cdn.com/flex016/user_avatar/forum.amebaiot.com/wswu/32/724_2.png) [@wswu](https://forum.amebaiot.com/u/wswu)\
**Post date:** [November 25, 2021, 5:41am UTC](https://forum.amebaiot.com/t/rtl8721csm-pa-27-swd-data/932/3 "2021-11-25T05:41:20Z")

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感謝wyy，已順利解決。