1. stm32f103c8t6串口打印异常： 不能同时debug，和打印串口。估计是运行内存不够。 2. 串口接收的坑： HAL_UART_Receive_IT(&huart2, &rx_buffer, 20); 这里如果串口约定了20字节，那么触发这个回调的条件之一就是，串口接收到20字节。如果发生的字节数不够，那么不会触发，等待你下一次发生 数据。直到接收到20个字节，才会触发。会导致混乱。所以改成单字节获取。这样就可以接收不定长串口的数据了。 3. 串口数据解析： 1E B1 58 52 D0 30：设备mac 原报文： 26 1E B1 58 52 D0 30 B8 1E 01 06 19 16 F7 FD 01 32 1D 48 85 C0 C5 4C 11 A9 B3 B6 DF B8 CD 91 E3 40 EE 2A DA 03 1B D5 26 AF 3C 43 AC EC 1B BA 1E FF 06 00 01 09 20 02 C5 F3 5C 7C 4A 7C 87 0B DE 45 AA 9C 14 A9 ED 58 F6 6F 4A 00 54 B7 EE 25 1B 4E 6F E2 42 2D AB 02 01 06 1A FF 4C 00 02 15 26 86 F3 9C BA DA 46 58 85 4A A6 2E 7E 5E 8B 8D 00 01 00 00 0B 15 FF 12 CC 3E 2D 54 00 00 20 48 0F C5 78 47 87 48 0F C5 78 47 87 26 6E 5E 3E B6 B9 17 AE 1E FF 06 00 01 09 20 22 D3 BD 05 1B 37 DA D1 9B 1D 34 16 85 95 68 AE 8D D6 1D B5 D1 75 13 CB 26 1E B1 58 52 D0 30 BD 1E FF 06 00 01 0F 20 02 C5 54 37 1F 8C A7 ED A9 9B B7 52 6D 59 7C E1 B0 65 00 59 D6 60 3D 42 26 2E 74 18 2E F8 10 B3 1E FF 06 00 01 09 20 22 5E 45 E1 50 B5 B5 9A 5D 82 63 24 D9 57 44 D2 3A 02 C5 4B D5 C7 3B 3F 1D 9E B9 6C C5 0F 48 A8 15 FF 12 CC 3E 2D 54 00 00 20 48 0F C5 78 47 87 48 0F C5 78 47 87 25 71 0B 1D 60 C8 F0 B6 02 01 06 1A FF 4C 00 02 15 FD A5 06 93 A4 E2 4F B1 AF CF C6 EB 07 64 78 25 2A 32 0B 71 C3 4.获取的数据 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 2b 4f 4b 0d │ ············+OK· │ 0a 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 26 61 ef bf f7 1b 32 b1 1e ff 06 00 01 09 20 22 │ &a····2······· " │------- a2 06 71 78 27 1f b1 4d c8 5a 91 11 3d 03 5c 3b │ ··qx'··M·Z··=·\; │ df 43 5e 6a eb 3e d5 00 00 00 00 00 00 00 00 00 │ ·C^j·>·········· │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 26 61 ef bf f7 1b 32 b1 1e ff 06 00 │ ····&a····2····· │------- 01 09 20 22 a2 06 71 78 27 1f b1 4d c8 5a 91 11 │ ·· "··qx'··M·Z·· │ 3d 03 5c 3b df 43 5e 6a eb 3e d5 00 00 00 00 00 │ =·\;·C^j·>······ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 26 61 ef bf f7 1b 32 b1 │ ········&a····2· │------- 1e ff 06 00 01 09 20 22 a2 06 71 78 27 1f b1 4d │ ······ "··qx'··M │ c8 5a 91 11 3d 03 5c 3b df 43 5e 6a eb 3e d5 00 │ ·Z··=·\;·C^j·>·· │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 25 70 0b 1d │ ············%p·· │------- 60 c8 f0 b2 02 01 06 1a ff 4c 00 02 15 fd a5 06 │ `········L······ │ 93 a4 e2 4f b1 af cf c6 eb 07 64 78 25 2a 32 0b │ ···O······dx%*2· │ 70 c3 22 70 0b 1d 60 c8 f0 b3 02 0a fc 0e 16 64 │ p·"p··`········d │ 73 05 f0 c8 60 1d 0b 70 00 00 00 00 08 09 6b 31 │ s···`··p······k1 │ 64 30 62 37 30 00 00 00 00 00 00 00 00 00 00 00 │ d0b70··········· │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 01 09 20 22 a2 06 71 78 27 1f b1 4d c8 5a 91 11 │ ·· "··qx'··M·Z·· │------- 3d 03 5c 3b df 43 5e 6a eb 3e d5 00 00 00 00 00 │ =·\;·C^j·>······ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 25 70 0b 1d 60 c8 f0 b5 02 01 06 1a │ ····%p··`······· │------- ff 4c 00 02 15 fd a5 06 93 a4 e2 4f b1 af cf c6 │ ·L·········O···· │ eb 07 64 78 25 2a 32 0b 70 c3 22 70 0b 1d 60 c8 │ ··dx%*2·p·"p··`· │ f0 b5 02 0a fc 0e 16 64 73 05 f0 c8 60 1d 0b 70 │ ·······ds···`··p │ 00 00 00 00 08 09 6b 31 64 30 62 37 30 00 00 00 │ ······k1d0b70··· │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 26 61 ef bf f7 1b 32 ae │ ········&a····2· │------- 1e ff 06 00 01 09 20 22 a2 06 71 78 27 1f b1 4d │ ······ "··qx'··M │ c8 5a 91 11 3d 03 5c 3b df 43 5e 6a eb 3e d5 00 │ ·Z··=·\;·C^j·>·· │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 26 61 ef bf │ ············&a·· │------- f7 1b 32 ab 1e ff 06 00 01 09 20 22 a2 06 71 78 │ ··2······· "··qx │ 27 1f b1 4d c8 5a 91 11 3d 03 5c 3b df 43 5e 6a │ '··M·Z··=·\;·C^j │ eb 3e d5 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ·>·············· │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 25 70 0b 1d 60 c8 f0 b1 02 01 06 1a ff 4c 00 02 │ %p··`········L·· │------- 15 fd a5 06 93 a4 e2 4f b1 af cf c6 eb 07 64 78 │ ·······O······dx │ 25 2a 32 0b 70 c3 22 70 0b 1d 60 c8 f0 b2 02 0a │ %*2·p·"p··`····· │ fc 0e 16 64 73 05 f0 c8 60 1d 0b 70 00 00 00 00 │ ···ds···`··p···· │ 08 09 6b 31 64 30 62 37 30 00 00 00 00 00 00 00 │ ··k1d0b70······· │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 25 68 0b 1d 60 c8 f0 b6 02 01 06 1a │ ····%h··`······· │ ff 4c 00 02 15 fd a5 06 93 a4 e2 4f b1 af cf c6 │ ·L·········O···· │ eb 07 64 78 25 2a 32 0b 68 c3 22 68 0b 1d 60 c8 │ ··dx%*2·h·"h··`· │ f0 b6 02 0a fc 0e 16 64 73 05 f0 c8 60 1d 0b 68 │ ·······ds···`··h │ 00 00 00 00 08 09 6b 31 64 30 62 36 38 00 00 00 │ ······k1d0b68··· │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 26 61 ef bf f7 1b 32 aa │ ········&a····2· │------- 1e ff 06 00 01 09 20 22 a2 06 71 78 27 1f b1 4d │ ······ "··qx'··M │ c8 5a 91 11 3d 03 5c 3b df 43 5e 6a eb 3e d5 00 │ ·Z··=·\;·C^j·>·· │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 26 61 ef bf │ ············&a·· │------- f7 1b 32 b2 1e ff 06 00 01 09 20 22 a2 06 71 78 │ ··2······· "··qx │ 27 1f b1 4d c8 5a 91 11 3d 03 5c 3b df 43 5e 6a │ '··M·Z··=·\;·C^j │ eb 3e d5 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ·>·············· │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 25 70 0b 1d 60 c8 f0 b2 02 01 06 1a ff 4c 00 02 │ %p··`········L·· │------- 15 fd a5 06 93 a4 e2 4f b1 af cf c6 eb 07 64 78 │ ·······O······dx │ 25 2a 32 0b 70 c3 22 70 0b 1d 60 c8 f0 b2 02 0a │ %*2·p·"p··`····· │ fc 0e 16 64 73 05 f0 c8 60 1d 0b 70 00 00 00 00 │ ···ds···`··p···· │ 08 09 6b 31 64 30 62 37 30 00 00 00 00 00 00 00 │ ··k1d0b70······· │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 26 61 ef bf f7 1b 32 aa 1e ff 06 00 │ ····&a····2····· │------- 01 09 20 22 a2 06 71 78 27 1f b1 4d c8 5a 91 11 │ ·· "··qx'··M·Z·· │ 3d 03 5c 3b df 43 5e 6a eb 3e d5 00 00 00 00 00 │ =·\;·C^j·>······ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 26 61 ef bf f7 1b 32 ab │ ········&a····2· │------- 1e ff 06 00 01 09 20 22 a2 06 71 78 27 1f b1 4d │ ······ "··qx'··M │ c8 5a 91 11 3d 03 5c 3b df 43 5e 6a eb 3e d5 00 │ ·Z··=·\;·C^j·>·· │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 26 61 ef bf │ ············&a·· │------- f7 1b 32 ab 1e ff 06 00 01 09 20 22 a2 06 71 78 │ ··2······· "··qx │ 27 1f b1 4d c8 5a 91 11 3d 03 5c 3b df 43 5e 6a │ '··M·Z··=·\;·C^j │ eb 3e d5 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ·>·············· │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 26 61 ef bf f7 1b 32 b1 1e ff 06 00 01 09 20 22 │ &a····2······· " │------- a2 06 71 78 27 1f b1 4d c8 5a 91 11 3d 03 5c 3b │ ··qx'··M·Z··=·\; │ df 43 5e 6a eb 3e d5 00 00 00 00 00 00 00 00 00 │ ·C^j·>·········· │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 26 61 ef bf f7 1b 32 ae 1e ff 06 00 │ ····&a····2····· │------- 01 09 20 22 a2 06 71 78 27 1f b1 4d c8 5a 91 11 │ ·· "··qx'··M·Z·· │ 3d 03 5c 3b df 43 5e 6a eb 3e d5 00 00 00 00 00 │ =·\;·C^j·>······ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 26 61 ef bf f7 1b 32 b0 │ ········&a····2· │------- 1e ff 06 00 01 09 20 22 a2 06 71 78 27 1f b1 4d │ ······ "··qx'··M │ c8 5a 91 11 3d 03 5c 3b df 43 5e 6a eb 3e d5 00 │ ·Z··=·\;·C^j·>·· │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 │ ················ │ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 RTC 计算秒数不准 SOS_KEY 按下 2037-16-23 18:48:83 SOS_KEY 松开 SOS_KEY 按压了：0 秒 2037-16-23 18:49:02