眾所周知stc單片機是用串口下載的，他的下載協議我們一直不得而知，于是我用一個軟件截取了串行口的數據并進行了簡單的分析，（左邊為16進制的數據，右邊為文本顯示）哪位51hei的大俠，按照這個給寫個下載程序出來，共享給大家啊，
下面的內容是串口截取的數據
讀：
Port opened
Baud rate set to 9600
StopBits: 1 stop bit, Parity: No parity, WordLength: 8
Port closed
Port opened
Baud rate set to 1200
StopBits: 1 stop bit, Parity: No parity, WordLength: 8
68 00 1C 00 29 FA 29 FE 29 FA 29 FA 29 FA 29 FA h...)ú)t)ú)ú)ú)ú
29 FE 29 FA 32 43 FD F1 08 82 91 16 )t)ú2Cy?.??.
Port closed
Port opened
Baud rate set to 115200
StopBits: 1 stop bit, Parity: No parity, WordLength: 8
Port closed
Port opened
Baud rate set to 1200
StopBits: 1 stop bit, Parity: No parity, WordLength: 8
Port closed
Port opened
Baud rate set to 1200
StopBits: 1 stop bit, Parity: No parity, WordLength: 8
Port closed
Port opened
Baud rate set to 115200
StopBits: 1 stop bit, Parity: No parity, WordLength: 8
46 B9 68 00 0C 8F FF FA 00 0C 28 80 B0 16 F1h..??ú..(?°.
Port closed
Port opened
Baud rate set to 1200
StopBits: 1 stop bit, Parity: No parity, WordLength: 8
Port closed
Port opened
Baud rate set to 1200
StopBits: 1 stop bit, Parity: No parity, WordLength: 8
Port closed
Port opened
Baud rate set to 115200
StopBits: 1 stop bit, Parity: No parity, WordLength: 8
46 B9 68 00 0B 8E FF FA 00 0C 17 1D 16 46 B9 68 F1h..??ú.....F1h
00 06 80 EE 16 46 B9 68 00 06 80 EE 16 46 B9 68 ..??.F1h..??.F1h
00 06 80 EE 16 46 B9 68 00 06 80 EE 16 46 B9 68 ..??.F1h..??.F1h
00 06 80 EE 16 ..??.
Port closed
Port opened
Baud rate set to 115200
StopBits: 1 stop bit, Parity: No parity, WordLength: 8
46 B9 68 00 06 80 EE 16 46 B9 68 00 07 80 00 EF F1h..??.F1h..?.?
16 46 B9 68 00 07 80 A1 90 16 46 B9 68 00 07 80 .F1h..???.F1h..?
00 EF 16 46 B9 68 00 07 80 00 EF 16 46 B9 68 00 .?.F1h..?.?.F1h.
07 80 00 EF 16 46 B9 68 00 06 80 EE 16 .?.?.F1h..??.
Port closed
Port opened
Baud rate set to 115200
StopBits: 1 stop bit, Parity: No parity, WordLength: 8
Port closed
寫：
Port opened
Baud rate set to 9600
StopBits: 1 stop bit, Parity: No parity, WordLength: 8
Port closed
Port opened
Baud rate set to 1200
StopBits: 1 stop bit, Parity: No parity, WordLength: 8
7F 7F 7F 7F 7F 7F 7F 7F 7F 7F 7F 7F 7F 7F 7F 7F
7F 7F 7F 7F 7F 7F 7F 7F 7F 7F 7F 7F 7F 7F 7F 7F
7F 7F 7F 7F 7F 7F 7F 7F 7F 7F 7F 7F 7F 7F 7F 7F
7F 7F 7F 7F 7F 7F 7F 7F 7F 7F 7F 7F 7F 7F 7F 7F
7F 7F 7F 7F 7F 7F 7F 7F 7F 7F 7F 7F 7F 7F 7F 7F
7F 7F 7F 7F 7F 7F 7F 7F 7F 7F 7F 7F 7F 7F 7F 7F
7F 7F 7F 7F 7F 7F 7F 7F 7F 7F 7F 7F 7F 7F 7F 7F
7F 7F 7F 7F 7F 7F 7F 7F 7F 7F 7F 7F 7F 7F 7F 7F
7F 7F 7F 7F 7F 7F
Port closed
Port opened
Baud rate set to 115200
StopBits: 1 stop bit, Parity: No parity, WordLength: 8
Port closed
Port opened
Baud rate set to 1200
StopBits: 1 stop bit, Parity: No parity, WordLength: 8
Port closed
Port opened
Baud rate set to 1200
StopBits: 1 stop bit, Parity: No parity, WordLength: 8
46 B9 6A 00 0C 8F FF FA 00 0C 28 80 B2 16 F1j..??ú..(?2.
Port closed
Port opened
Baud rate set to 115200
StopBits: 1 stop bit, Parity: No parity, WordLength: 8
Port closed
Port opened
Baud rate set to 1200
StopBits: 1 stop bit, Parity: No parity, WordLength: 8
Port closed
Port opened
Baud rate set to 1200
StopBits: 1 stop bit, Parity: No parity, WordLength: 8
46 B9 6A 00 0B 8E FF FA 00 0C 17 1F 16 F1j..??ú.....
Port closed
Port opened
Baud rate set to 115200
StopBits: 1 stop bit, Parity: No parity, WordLength: 8
46 B9 6A 00 06 80 F0 16 46 B9 6A 00 06 80 F0 16 F1j..?e.F1j..?e.
46 B9 6A 00 06 80 F0 16 46 B9 6A 00 06 80 F0 16 F1j..?e.F1j..?e.
46 B9 6A 00 06 80 F0 16 F1j..?e.
Port closed
Port opened
Baud rate set to 115200
StopBits: 1 stop bit, Parity: No parity, WordLength: 8
46 B9 6A 00 0D 84 01 33 33 33 33 33 33 2E 16 46 F1j..?.333333..F
B9 6A 00 8C 00 00 00 02 00 00 80 00 00 00 00 00 1j.?......?.....
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 00 00 00 78 16 46 B9 6A ...........x.F1j
00 8C 00 00 00 00 00 00 80 02 00 03 78 7F E4 F6 .?......?...x??
D8 FD 75 81 07 02 00 0F 75 A0 55 80 FE 00 00 00 ?yu?....u U?t...
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 00 17 16 46 B9 6A 00 8C ...........F1j.?
00 00 00 00 80 00 80 00 00 00 00 00 00 00 00 00 ....?.?.........
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 F6 16 46 B9 6A 00 8C 00 00 .......?.F1j.?..
00 01 00 00 80 00 00 00 00 00 00 00 00 00 00 00 ....?...........
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00 00 00 00 00 77 16 46 B9 6A 00 8C 00 00 00 01 .....w.F1j.?....
80 00 80 00 00 00 00 00 00 00 00 00 00 00 00 00 ?.?.............
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00 00 00 F7 16 46 B9 6A 00 06 82 F2 16 46 B9 6A ...÷.F1j..?ò.F1j
00 08 52 02 00 C6 16 ..R..?.
Port closed
Port opened
Baud rate set to 115200
StopBits: 1 stop bit, Parity: No parity, WordLength: 8
46 B9 6A 00 06 82 F2 16 46 B9 6A 00 08 52 02 00 F1j..?ò.F1j..R..
C6 16 ?.
Port closed
1.上：發送 7F 下載命令
2.下：
回應：
68 00 1C 00 29 FA 29 FA 29 FA 29 FA 29 FA 29 FA 29 FA 29 FE 32 43 FD F1 08 82 8D 16
3.上：
46 B9 6A 00 0C 8F FF FA 00 0C 28 80 B2 16