請教串口通訊高手,這個是那種校驗方式?手機app與單片機通訊

ID:33998 · 發(fā)表于 2021-2-26 18:19

手機APP 數(shù)據(jù)
7E 06 10 7B 3F
7E 06 14 3B 1A 0D
7E 06 0A C8 E5 0D
7E 06 10 7B 3F
7E 06 0A C8 E5 0D
7E 06 10 7B 3F
單片機數(shù)據(jù)
7E 08 50 01 01 2A 33 0D
7E 0A 54 00 00 02 08 4B 3F
7E 3B 4A 00 00 07 35 00 00 8E AC 00 00 00 00 00 00 01 5F 00 00 6F 3F 00 03 23 00 00 C5 89 00 00 00 3F 01 9F 60 00 00 58 00 00 00 02 44 00 00 02 09 00 00 00 00 00 45 27 0D
7E 08 50 01 01 2A 33 0D
7E 3B 4A 00 00 07 35 00 00 8E AC 00 00 00 00 00 00 01 5F 00 00 6F 3F 00 03 23 00 00 C5 89 00 00 00 3F 01 9F 60 00 00 58 00 00 00 02 44 00 00 02 09 00 00 00 00 00 45 27 0D
7E 08 50 01 01 2A 33 0D
7E 39 4B 00 00 14 3F 00 00 64 00 00 00 64 00 00 14 3F 00 00 64 00 00 00 64 00 00 03 3F 00 03 3F 00 03 3F 00 00 32 00 00 00 32 00 00 0E 10 00 01 00 55 3F
7E 3B 4A 00 00 07 35 00 00 8E AC 00 00 00 00 00 00 01 5F 00 00 6F 3F 00 03 23 00 00 C5 89 00 00 00 3F 01 9F 60 00 00 58 00 00 00 02 44 00 00 02 09 00 00 00 00 00 45 27 0D
7E 39 4B 00 00 14 3F 00 00 64 00 00 00 64 00 00 14 3F 00 00 64 00 00 00 64 00 00 03 3F 00 03 3F 00 03 3F 00 00 32 00 00 00 32 00 00 0E 10 00 01 00 55 3F
7E 08 50 01 01 2A 33 0D
手機APP第二次修改參數(shù)后的數(shù)據(jù)
7E 06 0A C8 E5 0D
7E 06 10 7B 3F
7E 06 0A C8 E5 0D
7E 06 10 7B 3F
7E 06 0B D8 C4 0D//這個數(shù)據(jù)有變化
7E 06 0A C8 E5 0D
7E 06 0B D8 C4 0D
7E 06 10 7B 3F
7E 06 0A C8 E5 0D
7E 06 14 3B 1A 0D
7E 06 0B D8 C4 0D
7E 06 0A C8 E5 0D
7E 06 10 7B 3F
7E 06 0A C8 E5 0D
單片機數(shù)據(jù)
7E 39 4B 00 00 2A 3F 00 00 64 00 00 00 64 00 00 14 3F 00 00 64 00 00 00 64 00 00 08 66 00 00 03 3F 00 03 3F 00 00 32 00 00 00 32 00 00 0E 10 00 01 00 39 45 0D
7E 08 50 01 01 2A 33 0D
7E 3B 4A 00 00 07 35 00 00 7F 3F 00 00 00 00 00 01 3B 00 00 64 33 00 00 03 23 00 01 91 D4 00 00 00 3F 01 3F 00 00 60 00 00 00 02 25 00 00 02 08 00 00 00 00 00 30 74 0D
7E 0A 54 00 00 02 08 4B 3F
7E 39 4B 00 00 2A 3F 00 00 64 00 00 00 64 00 00 14 3F 00 00 64 00 00 00 64 00 00 08 66 00 00 03 3F 00 03 3F 00 00 32 00 00 00 32 00 00 0E 10 00 01 00 39 45 0D
7E 3B 4A 00 00 07 35 00 00 7F 3F 00 00 00 00 00 01 3B 00 00 64 33 00 00 03 23 00 01 91 D4 00 00 00 3F 01 3F 00 00 60 00 00 00 02 25 00 00 02 08 00 00 00 00 00 30 74 0D
7E 08 50 01 01 2A 33 0D
7E 3B 4A 00 00 07 35 00 00 7F 3F 00 00 00 00 00 01 3B 00 00 64 33 00 00 03 23 00 01 91 D4 00 00 00 3F 01 3F 00 00 60 00 00 00 02 25 00 00 02 08 00 00 00 00 00 30 74 0D
7E 08 50 01 01 2A 33 0D
7E 39 4B 00 00 2A 3F 00 00 64 00 00 00 64 00 00 14 3F 00 00 64 00 00 00 64 00 00 08 66 00 00 03 3F 00 03 3F 00 00 32 00 00 00 32 00 00 0E 10 00 01 00 39 45 0D
7E 3B 4A 00 00 07 35 00 00 83 80 00 00 00 00 00 00 01 44 00 00 67 1F 00 00 03 23 00 01 91 D4 00 00 00 3F 01 3F 00 00 60 00 00 00 02 35 00 00 02 08 00 00 00 00 00 2A 3F
7E 39 4B 00 00 2A 3F 00 00 64 00 00 00 64 00 00 14 3F 00 00 64 00 00 00 64 00 00 08 66 00 00 03 3F 00 03 3F 00 00 32 00 00 00 32 00 00 0E 10 00 01 00 39 45 0D
7E 08 50 01 01 2A 33 0D
請教高手這個是那種校驗方式

ID:883698 · 發(fā)表于 2021-2-27 11:45

看了一下你發(fā)的數(shù)據(jù)，感覺不是什么特殊協(xié)議，
應(yīng)該就是普通的幀頭+數(shù)據(jù)+幀尾

頭數(shù)據(jù) 尾
7E 數(shù)據(jù) 3F
7E 數(shù)據(jù) 0D

ID:827243 · 發(fā)表于 2021-2-27 12:57

還有個規(guī)律，7E后一個字節(jié)表示數(shù)據(jù)長度，如果3F結(jié)尾就表示長度不夠，0D結(jié)尾就表示長度正好。但是這個長度在 39 3B時有偏差，不知何故。

ID:33998 · 發(fā)表于 2021-2-27 22:50

daemondong 發(fā)表于 2021-2-27 12:57
還有個規(guī)律，7E后一個字節(jié)表示數(shù)據(jù)長度，如果3F結(jié)尾就表示長度不夠，0D結(jié)尾就表示長度正好。但是這個長度在 ...

恩是這個情況不知道百度上說CRC驗證是不是跟這個有關(guān)

ID:827243 · 發(fā)表于 2021-3-1 12:45

CRC校驗和數(shù)據(jù)長度無關(guān)，從手機發(fā)送的數(shù)據(jù)不太像CRC校驗，CRC校驗就兩個字節(jié)了，不太可能結(jié)尾字符不是0D就是3F。

ID:33998 · 發(fā)表于 2021-3-1 16:38

難道就是普通的奇偶校驗

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請教串口通訊高手,這個是那種校驗方式?手機app與單片機通訊

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