Command Byte CRC Random Ranges. - meerk40t/moshi GitHub Wiki
The a7xx values used before the AC01 commands are:
A2 A6 B2 B6 C5 C7 CD CF E2 E5 E6 E7 ED EF F2 F6
Before a jump / program / turned on:
45 47 4D 4F 65 67 6D 6F 82 86 92 96 C2 C6 D2 D6
After a jump / program:
05 07 0D 0F 25 27 2D 2F 80 84 90 94 C0 C4 D0 D4
Freemotor command:
-
08 0C 13 19 1B 1C 31 3B 48 58 5C ?? ?? ?? ?? ??-- Low sample size.
Stop command (likely same as freemotor):
-
19 58 C2 ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ??-- Low Sample size.
Header start byte. (0x00 position), followed by 1 int16le (1)
0A 0E 1A 1E 4A 4E 51 53 59 5A 5B 5E 71 74 79 7B
2nd Command For Jump. (0x03 position), followed by 3 int16le (2)
00 01 03 04 09 0C 10 14 21 23 29 2B 40 44 50 54
Laser Off, X and Y values. 3rd Command for Jump. (0x0A position), followed by 2 int16le (3)
55 57 5D 5F 75 77 7D 7F 8A 8E 9A 9E CA CE DA DE
Terminal Commands for Jump/Program. (last 6 bytes). (4)
05 07 0D 0F 25 27 2D 2F 80 84 90 94 C0 C4 D0 D4
Laser On, X and Y values. (5)
AA AE BA BE D5 D7 DD DF EA EE F5 F7 FA FD FE FF
Laser UNK(likely off), Y value only. (6)
15 17 1D 1F 35 37 3D 3F 88 8C 98 9C C8 CC D8 DC
Laser Off, X value only. (7)
45 47 4D 4F 65 67 6D 6F 82 86 92 96 C2 C6 D2 D6
Laser On, X value only. (8)
A2 A6 B2 B6 C5 C7 CD CF E2 E5 E6 E7 ED EF F2 F6
1. 0A 0E 1A 1E 4A 4E 51 53 59 5A 5B 5E 71 74 79 7B
2. 00 01 03 04 09 0C 10 14 21 23 29 2B 40 44 50 54
3. 55 57 5D 5F 75 77 7D 7F 8A 8E 9A 9E CA CE DA DE
4. 05 07 0D 0F 25 27 2D 2F 80 84 90 94 C0 C4 D0 D4
5. AA AE BA BE D5 D7 DD DF EA EE F5 F7 FA FD FE FF
6. 15 17 1D 1F 35 37 3D 3F 88 8C 98 9C C8 CC D8 DC
7. 45 47 4D 4F 65 67 6D 6F 82 86 92 96 C2 C6 D2 D6
8. A2 A6 B2 B6 C5 C7 CD CF E2 E5 E6 E7 ED EF F2 F6
If we perform:
def swizzle(b, b0, b1, b2, b3, b4, b5, b6, b7):
return ((b >> 0) & 1) << b7 | ((b >> 1) & 1) << b6 | \
((b >> 2) & 1) << b5 | ((b >> 3) & 1) << b4 | \
((b >> 4) & 1) << b3 | ((b >> 5) & 1) << b2 | \
((b >> 6) & 1) << b1 | ((b >> 7) & 1) << b0
def convert(q):
if q & 1:
return swizzle(q, 7, 6, 2, 4, 3, 5, 1, 0)
else:
return swizzle(q, 5, 1, 7, 2, 4, 3, 6, 0)The rows are converted into:
1: ['50', '51', '52', '53', '54', '55', '56', '58', '59', '5a', '5b', '5c', '5d', '5e', '5f', '8e']
2: ['00', '01', '02', '03', '04', '05', '06', '07', '08', '09', '0a', '0c', '0d', '0e', '0f', '18']
3: ['70', '71', '72', '73', '74', '75', '76', '77', '78', '79', '7a', '7b', '7c', '7d', '7e', '7f']
4: ['20', '21', '22', '23', '24', '25', '26', '27', '28', '29', '2a', '2b', '2c', '2d', '2e', '2f']
5: ['f0', 'f1', 'f2', 'f3', 'f4', 'f5', 'f6', 'f7', 'f8', 'f9', 'fa', 'fb', 'fc', 'fd', 'fe', 'ff']
6: ['30', '31', '32', '33', '34', '35', '36', '37', '38', '39', '3a', '3b', '3c', '3d', '3e', '3f']
7: ['60', '61', '62', '63', '64', '65', '66', '67', '68', '69', '6a', '6b', '6c', '6d', '6e', '6f']
8: ['e0', 'e1', 'e2', 'e3', 'e4', 'e5', 'e6', 'e7', 'e8', 'e9', 'ea', 'eb', 'ec', 'ed', 'ee', 'ef']
9: ['10', '12', '13', '15', '16', '18', '19', '1b', '1c', '1e', '1f']
We know that 3 (Off, X, Y) and 5 (On, X, Y) differ by a laser on state. And that 7 (Off, X) and 8 (On, X) should differ by the laser. In both of these the laser bit is could be judged as 0x80 or bit #7. Since the on section of both is the same code with the highest bit set.
Taking another stab that the difference between 3 (0x7?) and 7 (0x6?) is the flag for Y value given. This would be lowest bit in the upper nibble 0x10. The same difference should exist between 5 (0xF?) and 8 (0xE?). Lines 3 (off, x,y) and 6 (off, y) should differ by the existence of X. this is 0x7? and 0x3? which differs by the 0x4? place.
This would imply that that flags are: (Laser)(X Value)(Unknown)(Yvalue)
Testing still need to be done as to whether the remaining bits are random or crc and have a required order or something.
Inverting the Swizzle:
['00', '01', '40', '03', '10', '21', '50', '23', '04', '09', '44', '0b', '14', '29', '54', '2b']
['08', '11', '48', '13', '18', '31', '58', '33', '0c', '19', '4c', '1b', '1c', '39', '5c', '3b']
['80', '05', 'c0', '07', '90', '25', 'd0', '27', '84', '0d', 'c4', '0f', '94', '2d', 'd4', '2f']
['88', '15', 'c8', '17', '98', '35', 'd8', '37', '8c', '1d', 'cc', '1f', '9c', '3d', 'dc', '3f']
['02', '41', '42', '43', '12', '61', '52', '63', '06', '49', '46', '4b', '16', '69', '56', '6b']
['0a', '51', '4a', '53', '1a', '71', '5a', '73', '0e', '59', '4e', '5b', '1e', '79', '5e', '7b']
['82', '45', 'c2', '47', '92', '65', 'd2', '67', '86', '4d', 'c6', '4f', '96', '6d', 'd6', '6f']
['8a', '55', 'ca', '57', '9a', '75', 'da', '77', '8e', '5d', 'ce', '5f', '9e', '7d', 'de', '7f']
['20', '81', '60', '83', '30', 'a1', '70', 'a3', '24', '89', '64', '8b', '34', 'a9', '74', 'ab']
['28', '91', '68', '93', '38', 'b1', '78', 'b3', '2c', '99', '6c', '9b', '3c', 'b9', '7c', 'bb']
['a0', '85', 'e0', '87', 'b0', 'a5', 'f0', 'a7', 'a4', '8d', 'e4', '8f', 'b4', 'ad', 'f4', 'af']
['a8', '95', 'e8', '97', 'b8', 'b5', 'f8', 'b7', 'ac', '9d', 'ec', '9f', 'bc', 'bd', 'fc', 'bf']
['22', 'c1', '62', 'c3', '32', 'e1', '72', 'e3', '26', 'c9', '66', 'cb', '36', 'e9', '76', 'eb']
['2a', 'd1', '6a', 'd3', '3a', 'f1', '7a', 'f3', '2e', 'd9', '6e', 'db', '3e', 'f9', '7e', 'fb']
['a2', 'c5', 'e2', 'c7', 'b2', 'e5', 'f2', 'e7', 'a6', 'cd', 'e6', 'cf', 'b6', 'ed', 'f6', 'ef']
['aa', 'd5', 'ea', 'd7', 'ba', 'f5', 'fa', 'f7', 'ae', 'dd', 'ee', 'df', 'be', 'fd', 'fe', 'ff']