Kouno/stm32 can #18
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sabanekko3
reviewed
Jan 27, 2024
stm32/about_STM32_CAN.md
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| @@ -226,7 +227,7 @@ STM32には、受信したデータを、IDで判断して勝手に取捨選択 | |||
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| ### IDについて | |||
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| IDは11bitの標準IDもしくは29bitの拡張IDを使用することができる。ロボコンでは標準IDで十二分だと思われます。~~1700個以上機器を繋ぐなら別だけど~~ | |||
| IDは11bitの標準IDもしくは29bitの拡張IDを使用することができる。ロボコンでは標準IDで十二分だと思われます。拡張IDは動作確認が取れていないため非推奨です。 | |||
sabanekko3
reviewed
Jan 27, 2024
stm32/about_STM32_CAN.md
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| ((0x0000FFFFU & (uint32_t)sFilterConfig->FilterIdHigh) << 16U) | | ||
| (0x0000FFFFU & (uint32_t)sFilterConfig->FilterIdLow); | ||
| ``` | ||
| **下位3ビットのことを考えていねえ！** |
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この下位3bitをいじればリモートフレームだけ受け取ったりできると思う
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確かにIDの部分だけ考えるなら面倒な処理になるけどフレームの種類もフィルタリングしたいなら必要だよねーという感じ
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確かにリファレンスマニュアル眺める感じでは、リモートフレームorデータフレームかの情報がここに置かれそうですね
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これ1個のフィルタバンクはリモートフレームかデータフレームかのどちらかしか受信しないという認識でよいのだろうか
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マスクモードならマスクのRTRを0にしとけば両方受け取れるようになると思うけど
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これ標準IDor拡張IDもフィルタ出来そうですけどどうなんですかね？
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CANの資料を書いていたことを思い出したので