<div id="readability-page-1" class="page"><div>
                <div id="SE-05a506e2-830f-4816-aa98-d3a1eb95c73f">
                                    <p id="SE-60a615a8-9cce-4ea4-811c-313f5026a3e3"><span id="SE-c4de35e1-6ea9-11ef-b9f0-1ffd780335fa">​</span></p><p id="SE-1db79c14-ab59-4d6e-bb42-5a81ff2a905e"><span id="SE-c4de35e2-6ea9-11ef-b9f0-755930961348">STM32H7S7에서 XSPI를 XIP(메모리형)로 두 개 동시에 사용할 때 한쪽 포트의 CS(ChipSelect)가 동작하지 않는 문제가 발생하였다.</span></p><p id="SE-79a9b72f-0ce4-4cbe-970d-d28b397d5c13"><span id="SE-c4de35e3-6ea9-11ef-b9f0-e3151c7856fe">​</span></p><p id="SE-8ebfdaa7-4482-403a-ae54-aaeb6201f3ce"><span id="SE-c4de35e4-6ea9-11ef-b9f0-3f5dbc133591">원인을 찾아보니 ST 라이브러리에서 XSPI1과 XSPI2를 각각 초기화할 때마다 XSPIM_CR 레지스터를 Reset 하면서 문제가 발생하였다.</span></p>
                            </div>                <div id="SE-4ea42cce-d9b3-4331-9f07-975d4a70b7c7">
                                <p><a href="#" onclick="return false;" data-linktype="img" data-linkdata="{&quot;id&quot; : &quot;SE-4ea42cce-d9b3-4331-9f07-975d4a70b7c7&quot;, &quot;src&quot; : &quot;https://mblogthumb-phinf.pstatic.net/MjAyNDA5MDlfMTQx/MDAxNzI1ODg0ODIzMzcx.HhVDqrTYhx3-wKnj1hkKel35A6mZn1mDcqhHZG2ndUwg.wWmceft7EVGcFexd7lDqwlWaaOY7jLj2_kzHLAZjmnog.PNG/image.png&quot;, &quot;originalWidth&quot; : &quot;1292&quot;, &quot;originalHeight&quot; : &quot;511&quot;, &quot;linkUse&quot; : &quot;false&quot;, &quot;link&quot; : &quot;&quot;}">
                                        <img src="https://mblogthumb-phinf.pstatic.net/MjAyNDA5MDlfMTQx/MDAxNzI1ODg0ODIzMzcx.HhVDqrTYhx3-wKnj1hkKel35A6mZn1mDcqhHZG2ndUwg.wWmceft7EVGcFexd7lDqwlWaaOY7jLj2_kzHLAZjmnog.PNG/image.png?type=w800" data-width="693" data-height="274" alt="">
                                    </a>
                                </p>
                        </div>
                <div id="SE-8eeb6354-ce71-4950-9827-56a89fb2631a">
                            <p id="SE-4b928012-817b-4c49-afde-d017f7364bb9"><span id="SE-c4de35e5-6ea9-11ef-b9f0-a73f5856c792">XSPIM_CR 레지스터에는 CSSEL_OVR_01, CSSEL_OVR_02가 있고 </span></p>
                        </div>                <div id="SE-0c86d26f-f6ca-4b3d-b61c-b48337aabc79">
                                <p><a href="#" onclick="return false;" data-linktype="img" data-linkdata="{&quot;id&quot; : &quot;SE-0c86d26f-f6ca-4b3d-b61c-b48337aabc79&quot;, &quot;src&quot; : &quot;https://mblogthumb-phinf.pstatic.net/MjAyNDA5MDlfNDMg/MDAxNzI1ODg0ODUyMzM3.kle80VmxL37SYHd7r2CAl7__mf7ZmZiNpyEjMbuEjVgg.oQhx-yvOScxnnddLKItbWk-9J_WFCfqFJwyhGORNcBQg.PNG/image.png&quot;, &quot;originalWidth&quot; : &quot;1134&quot;, &quot;originalHeight&quot; : &quot;406&quot;, &quot;linkUse&quot; : &quot;false&quot;, &quot;link&quot; : &quot;&quot;}">
                                        <img src="https://mblogthumb-phinf.pstatic.net/MjAyNDA5MDlfNDMg/MDAxNzI1ODg0ODUyMzM3.kle80VmxL37SYHd7r2CAl7__mf7ZmZiNpyEjMbuEjVgg.oQhx-yvOScxnnddLKItbWk-9J_WFCfqFJwyhGORNcBQg.PNG/image.png?type=w800" data-width="693" data-height="248" alt="">
                                    </a>
                                </p>
                        </div>
                <div id="SE-10fd53ae-dda2-4c1e-a433-603814f2ea17">
                                    <p id="SE-ddb05cca-d170-4937-ac3a-288de68bf9d7"><span id="SE-c4de35e6-6ea9-11ef-b9f0-81a0e107d627">각 채널별 NCS1 혹은 NCS2로 변경을 할 수 있게 구성되어 있다.</span></p><p id="SE-b9049650-766d-45ec-a27e-f039c5f79b34"><span id="SE-c4de5cf7-6ea9-11ef-b9f0-5b1e96f440a2">​</span></p><p id="SE-3be05478-e9d5-4f24-80eb-28525bc0fb09"><span id="SE-c4de5cf8-6ea9-11ef-b9f0-397bb0854475">코드를 보면 MX_XSPI1_Init과 MX_XSPI2_Init 모두 HAL_XSPIM_Config 함수를 호출한다.</span></p>
                            </div>                <div id="SE-18699061-fda7-4925-a418-1ad41faa8297">
                                <p><a href="#" onclick="return false;" data-linktype="img" data-linkdata="{&quot;id&quot; : &quot;SE-18699061-fda7-4925-a418-1ad41faa8297&quot;, &quot;src&quot; : &quot;https://mblogthumb-phinf.pstatic.net/MjAyNDA5MDlfMTQw/MDAxNzI1ODg1MDIzMjk5.uAq6ToscrNZy_rg9oCxG0lbEaXE14LDEa_jsblryMi4g.GDnby2iuagV8B9dmatmEncXC1YUSrjmTKotkXhpE_NQg.PNG/image.png&quot;, &quot;originalWidth&quot; : &quot;895&quot;, &quot;originalHeight&quot; : &quot;297&quot;, &quot;linkUse&quot; : &quot;false&quot;, &quot;link&quot; : &quot;&quot;}">
                                        <img src="https://mblogthumb-phinf.pstatic.net/MjAyNDA5MDlfMTQw/MDAxNzI1ODg1MDIzMjk5.uAq6ToscrNZy_rg9oCxG0lbEaXE14LDEa_jsblryMi4g.GDnby2iuagV8B9dmatmEncXC1YUSrjmTKotkXhpE_NQg.PNG/image.png?type=w800" data-width="693" data-height="229" alt="">
                                    </a>
                                </p>
                        </div>
                <div id="SE-ad689763-36d2-4061-8e29-5b9272ac0ee0">
                                <p><a href="#" onclick="return false;" data-linktype="img" data-linkdata="{&quot;id&quot; : &quot;SE-ad689763-36d2-4061-8e29-5b9272ac0ee0&quot;, &quot;src&quot; : &quot;https://mblogthumb-phinf.pstatic.net/MjAyNDA5MDlfMTcw/MDAxNzI1ODg1MDI5MzQ0.d5G2IxC28PjWYNX4MghIH7Hoag6fCmQHXikkNXa6ZFIg.UNrG9QmnJEY6EEv3Jv50tmTQfPBi7Mn4BUMEoltTti0g.PNG/image.png&quot;, &quot;originalWidth&quot; : &quot;880&quot;, &quot;originalHeight&quot; : &quot;373&quot;, &quot;linkUse&quot; : &quot;false&quot;, &quot;link&quot; : &quot;&quot;}">
                                        <img src="https://mblogthumb-phinf.pstatic.net/MjAyNDA5MDlfMTcw/MDAxNzI1ODg1MDI5MzQ0.d5G2IxC28PjWYNX4MghIH7Hoag6fCmQHXikkNXa6ZFIg.UNrG9QmnJEY6EEv3Jv50tmTQfPBi7Mn4BUMEoltTti0g.PNG/image.png?type=w800" data-width="693" data-height="293" alt="">
                                    </a>
                                </p>
                        </div>
                <div id="SE-fa24bd63-bafb-4c17-adfe-8dbcbeb4b986">
                            <p id="SE-b110acb6-751e-4d79-818c-fd95aaafe996"><span id="SE-c4de5cf9-6ea9-11ef-b9f0-83afdcab399e">HAL_XSPIM_Config 함수를 보면 CLEAR_REG(XSPIM-&gt;CR)로 XSPIM_CR 레지스터를 클리어하는 매크로를 호출하고 있다.</span></p>
                        </div>                <div id="SE-fc706a5b-bf93-4a94-81fa-9aea03d798f8">
                                <p><a href="#" onclick="return false;" data-linktype="img" data-linkdata="{&quot;id&quot; : &quot;SE-fc706a5b-bf93-4a94-81fa-9aea03d798f8&quot;, &quot;src&quot; : &quot;https://mblogthumb-phinf.pstatic.net/MjAyNDA5MDlfMTAy/MDAxNzI1ODg1MzExNzc2.8QYoGp2RNJX2Vp_Pukisokugco6aACtC0yo0pjAwbVgg.OO9BNVUjPPWlXr3SQArYdVgqjePgEI48WCxZrVxcp6cg.PNG/SE-fc706a5b-bf93-4a94-81fa-9aea03d798f8.png&quot;, &quot;originalWidth&quot; : &quot;1059&quot;, &quot;originalHeight&quot; : &quot;335&quot;, &quot;linkUse&quot; : &quot;false&quot;, &quot;link&quot; : &quot;&quot;}">
                                        <img src="https://mblogthumb-phinf.pstatic.net/MjAyNDA5MDlfMTAy/MDAxNzI1ODg1MzExNzc2.8QYoGp2RNJX2Vp_Pukisokugco6aACtC0yo0pjAwbVgg.OO9BNVUjPPWlXr3SQArYdVgqjePgEI48WCxZrVxcp6cg.PNG/SE-fc706a5b-bf93-4a94-81fa-9aea03d798f8.png?type=w800" data-width="693" data-height="219" alt="">
                                    </a>
                                </p>
                        </div>
                <div id="SE-5acac8cd-70bb-4a8d-aab3-417435f1799f">
                                    <p id="SE-0ac95f5b-27ec-4da1-9f93-6d4b7f0ee074"><span id="SE-c4de5cfa-6ea9-11ef-b9f0-1b4ac303cd3b">이런 문제로 마지막에 호출된 XSPI 포트에만 맞게 XSPIM_CR이 설정되는 문제가 발생할 수 있게 된다.</span></p><p id="SE-df350fd5-d096-445f-9cc3-8048c2ecb2e0"><span id="SE-c4de5cfb-6ea9-11ef-b9f0-a71a85c6e53e">각 포트별 설정해야 하는 것은 CSSEL_OVR_O1, CSSEL_OVR_O2이고 만일 하드웨어적으로 두 포트 모두 NCS1로 구성을 하였다면 특별히 문제는 발생하지 않을 것이다.</span></p><p id="SE-f93409ff-4aca-4ed6-9c02-0dc3c51dc13b"><span id="SE-c4de5cfc-6ea9-11ef-b9f0-d14438d20701">​</span></p><p id="SE-16e59a42-572b-4f13-95e7-cb06fe53ea40"><span id="SE-c4de5cfd-6ea9-11ef-b9f0-bbcd474372d3">그런데.... STM32H7S7-SOM 보드는 XSPI1의 CS 포트가 NCS2로 구성되어 있다 보니 문제가 되는 것이다....</span></p>
                            </div>                <div id="SE-02be4122-ed6c-418a-91d8-35a5e33ce7cc">
                            <p><a href="#" onclick="return false;" data-linktype="sticker" data-linkdata="{&quot;src&quot; : &quot;https://storep-phinf.pstatic.net/cafe_004/original_18.png&quot;, &quot;packCode&quot; : &quot;cafe_004&quot;, &quot;seq&quot; : &quot;18&quot;, &quot;width&quot; : &quot;185&quot;, &quot;height&quot; : &quot;160&quot;}">
                                    <img src="https://storep-phinf.pstatic.net/cafe_004/original_18.png?type=p100_100" alt="">
                                </a>
                            </p>
                        </div>                <div id="SE-caa5f51f-04d6-4559-8ac1-95c0d97d7671">
                            <p id="SE-20ccbd55-2c5f-4dfd-9515-284abaeed577"><span id="SE-c4de840e-6ea9-11ef-b9f0-112371cbe3ca">해당 문제를 해결하려면 main 함수 내 USER CODE BEGIN 2 다음 줄에 아래의 내용을 추가하면 된다.</span></p>
                        </div>                <div id="SE-b836a614-cd2f-41d7-b4f3-80558e3829aa">
                                    <p>  CLEAR_BIT(XSPI1-&gt;CR, XSPI_CR_EN);
  CLEAR_BIT(XSPI2-&gt;CR, XSPI_CR_EN);

  SET_BIT(XSPIM-&gt;CR, XSPIM_CR_CSSEL_OVR_O1); /* XSPI1 NCS2로 설정*/
  CLEAR_BIT(XSPIM-&gt;CR, XSPIM_CR_CSSEL_OVR_O2); /* XSPI2 는 NCS1로 설정 */

  SET_BIT(XSPI1-&gt;CR, XSPI_CR_EN);
  SET_BIT(XSPI2-&gt;CR, XSPI_CR_EN);</p>
                                </div>                <div id="SE-9f299d84-5515-407a-b05f-11cea31633d9">
                                <p><a href="#" onclick="return false;" data-linktype="img" data-linkdata="{&quot;id&quot; : &quot;SE-9f299d84-5515-407a-b05f-11cea31633d9&quot;, &quot;src&quot; : &quot;https://mblogthumb-phinf.pstatic.net/MjAyNDA5MDlfMTM1/MDAxNzI1ODg1NjgxMDYz.egjVEU7UH6-JNkI4oNgGv9Hj_wkkflyjQa6D3UqgGWcg.stX6SjuA2wsvdS-mf6ciqx4cVQcQANebQMILomJy0qcg.PNG/image.png&quot;, &quot;originalWidth&quot; : &quot;457&quot;, &quot;originalHeight&quot; : &quot;167&quot;, &quot;linkUse&quot; : &quot;false&quot;, &quot;link&quot; : &quot;&quot;}">
                                        <img src="https://mblogthumb-phinf.pstatic.net/MjAyNDA5MDlfMTM1/MDAxNzI1ODg1NjgxMDYz.egjVEU7UH6-JNkI4oNgGv9Hj_wkkflyjQa6D3UqgGWcg.stX6SjuA2wsvdS-mf6ciqx4cVQcQANebQMILomJy0qcg.PNG/image.png?type=w800" data-width="457" data-height="167" alt="">
                                    </a>
                                </p>
                        </div>
                <div id="SE-696337de-c04a-4d35-ae8b-fda8dfb49caf">
                            <p id="SE-4219307e-34c0-45d8-bc94-ce02375bbe7c"><span id="SE-c4deab1f-6ea9-11ef-b9f0-9bf72f67b744">문제는 해당 설정이 MX_EXTMEM_MANAGER_Init 함수 호출 전에 이뤄져야 한다는 것이다.</span></p>
                        </div>                <div id="SE-f0120982-593f-465e-a361-519ebe1a6a3b">
                                <p><a href="#" onclick="return false;" data-linktype="img" data-linkdata="{&quot;id&quot; : &quot;SE-f0120982-593f-465e-a361-519ebe1a6a3b&quot;, &quot;src&quot; : &quot;https://mblogthumb-phinf.pstatic.net/MjAyNDA5MDlfMTAz/MDAxNzI1ODg1NzY4MTA2.pZukoNA5BBnGPVjVnu4LoDpeBuKtyjRmbHXP4fy1_rEg.Yi3q6nddqNpA-a-3pO3mBoTVqBZdxmDqDhFvhx7cl6cg.PNG/SE-f0120982-593f-465e-a361-519ebe1a6a3b.png&quot;, &quot;originalWidth&quot; : &quot;1313&quot;, &quot;originalHeight&quot; : &quot;605&quot;, &quot;linkUse&quot; : &quot;false&quot;, &quot;link&quot; : &quot;&quot;}">
                                        <img src="https://mblogthumb-phinf.pstatic.net/MjAyNDA5MDlfMTAz/MDAxNzI1ODg1NzY4MTA2.pZukoNA5BBnGPVjVnu4LoDpeBuKtyjRmbHXP4fy1_rEg.Yi3q6nddqNpA-a-3pO3mBoTVqBZdxmDqDhFvhx7cl6cg.PNG/SE-f0120982-593f-465e-a361-519ebe1a6a3b.png?type=w800" data-width="693" data-height="319" alt="">
                                    </a>
                                </p>
                        </div>
                <div id="SE-403bb57b-aa65-44d1-bb1b-0d03f3e5d5ee">
                            <p id="SE-7df62d10-f91f-4f2e-ba40-17ceac1d459a"><span id="SE-c4deab20-6ea9-11ef-b9f0-f564c93c3a6e">먼저 위와 같이 ioc 파일을 열어 Project Manager 탭으로 이동 후 Advanced Settings &gt; MX_EXTMEM_MANGER에 Do Not Generate Function Call 을 체크해 자동 실행을 맞아준다.</span></p>
                        </div>                <div id="SE-5e65467a-175d-4141-8e72-661a3671180e">
                                <p><a href="#" onclick="return false;" data-linktype="img" data-linkdata="{&quot;id&quot; : &quot;SE-5e65467a-175d-4141-8e72-661a3671180e&quot;, &quot;src&quot; : &quot;https://mblogthumb-phinf.pstatic.net/MjAyNDA5MDlfMjkx/MDAxNzI1ODg1ODI5MTky.gNILnNgDOCCeFSWR6etFZNroDV5dNOpQpW-cWrvuMbIg.Pj3C0iVTn5r47AZ5qN5fwaSiAcqlophO20ek56BYrY8g.PNG/image.png&quot;, &quot;originalWidth&quot; : &quot;424&quot;, &quot;originalHeight&quot; : &quot;227&quot;, &quot;linkUse&quot; : &quot;false&quot;, &quot;link&quot; : &quot;&quot;}">
                                        <img src="https://mblogthumb-phinf.pstatic.net/MjAyNDA5MDlfMjkx/MDAxNzI1ODg1ODI5MTky.gNILnNgDOCCeFSWR6etFZNroDV5dNOpQpW-cWrvuMbIg.Pj3C0iVTn5r47AZ5qN5fwaSiAcqlophO20ek56BYrY8g.PNG/image.png?type=w800" data-width="424" data-height="227" alt="">
                                    </a>
                                </p>
                        </div>
                <div id="SE-9a506e29-600d-4c6b-b0ff-3bea91b7a214">
                                    <p id="SE-1e7972ba-bda7-4715-a6a8-14965368c52e"><span id="SE-c4ded231-6ea9-11ef-b9f0-91a9670668af">그다음 위와 같이 XSPIM_CR 설정을 마친 후 직접 호출해 주면 된다.</span></p><p id="SE-b743bbde-43b8-4741-93e9-4c0c3305229c"><span id="SE-c4ded232-6ea9-11ef-b9f0-67ac746afbf1">​</span></p><p id="SE-a16b9f0f-d462-4d23-b165-68c623e73edd"><span id="SE-c4ded233-6ea9-11ef-b9f0-ed8d74d64174">아마도 이 부분은 추후 라이브러리 업데이트 시 개선이 되지 않을까 싶다.</span></p>
                            </div>                <div id="SE-4af93efb-a7bd-44d2-af29-ce1ed19e607c">
                            <p><a href="#" onclick="return false;" data-linktype="sticker" data-linkdata="{&quot;src&quot; : &quot;https://storep-phinf.pstatic.net/cafe_004/original_14.png&quot;, &quot;packCode&quot; : &quot;cafe_004&quot;, &quot;seq&quot; : &quot;14&quot;, &quot;width&quot; : &quot;185&quot;, &quot;height&quot; : &quot;160&quot;}">
                                    <img src="https://storep-phinf.pstatic.net/cafe_004/original_14.png?type=p100_100" alt="">
                                </a>
                            </p>
                        </div>                <div id="SE-b56d1d80-6ea9-11ef-b9f0-1f86bab07d4c">
                            <p id="SE-b638aae5-6ea9-11ef-b9f0-798cec3f4222"><span id="SE-c4def944-6ea9-11ef-b9f0-dd3576aeae60">이런 재미난(?)일을 같이 고민하고 만들어 나갈 엔지니어를 찾고 있습니다.(절찬 채용중!)</span></p>
                        </div>                                    </div></div>

하이! 제니스

STM32H7S7에서 XSPI를 XIP(메모리형)로 두 개 동시에 사용할 때 한쪽 포트의 CS(ChipSelect)가 동작하지 않는 문제가 발생하였다. 원인을 찾아보니 ST 라이브러리에서 XSPI1과 XSPI2를 각각 초기화할 때마다 XSPIM_CR 레지스터를 Reset 하면서 문제가 발생하였다. XSPIM_CR 레지스터에는 CSSEL_OVR_01, CSSEL_OVR_02가 있고 각 채널별 NCS1 혹은 NCS2로 변경을 할 수 있게 구성되어 있다. 코드를 보면 MX_XSPI1_Init과 MX_XSPI2_Init 모두 HAL_XSPIM_Config 함수를 호출한다. HAL_XSPIM_Config 함수를 보면 CLEAR_REG(XSPIM->CR)로 XSPIM_CR 레지스터를 클리어하는 매크로를 호출하고 있다. 이런 문제로 마지막에 호출된 XSPI 포트에만 맞게 X.......

STM32H7S7 - XSPI 2개 동시 사용 시 CS(ChipSelect) 동작 안 하는 문제

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