If I ping from the device to my PC, I am able to get tcpdump packet and see the echo go back however the packet is dropped as shown below:
eth0 Link encap:Ethernet HWaddr 00:0D:A7:00:0E:5C
inet addr:10.0.3.150 Bcast:10.0.3.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:18714 errors:0 dropped:16850 overruns:0 frame:0
TX packets:1 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:1380531 (1.3 MiB) TX bytes:42 (42.0 B)
Interrupt:194
This fault was found using the following setup with the below config:
CPU: ARM926EJ-S [41069264] revision 4 (ARMv5TEJ), cr=00053177
Linux version 3.4.52
mach-mx21ads config:
static struct smsc911x_platform_config smsc911x_config = {
.irq_polarity = SMSC911X_IRQ_POLARITY_ACTIVE_LOW,
.irq_type = SMSC911X_IRQ_TYPE_PUSH_PULL,
.flags = SMSC911X_USE_16BIT,
};
static struct resource smsc911x_resources[] = {
{
.start = MX21_CS1_BASE_ADDR,
.end = MX21_CS1_BASE_ADDR + MX21ADS_SMSC911X_MMIO_SIZE - 1,
.flags = IORESOURCE_MEM,
}, {
.start = MX21ADS_SMSC911X_IRQ,
.end = MX21ADS_SMSC911X_IRQ,
.flags = IORESOURCE_IRQ | IRQF_TRIGGER_FALLING,
},
};
static struct platform_device smsc911x_device = {
.name = "smsc911x",
.id = -1,
.num_resources = ARRAY_SIZE(smsc911x_resources),
.resource = smsc911x_resources,
.dev = {
.platform_data = &smsc911x_config,
},
};
Linux kernel log:
[ 1.717445] 0x000001400000-0x000004000000 : "system"
[ 1.745103] smsc911x: Driver version 2008-10-21
[ 1.760910] smsc911x supply vdd33a not found, using dummy regulator
[ 1.780099] smsc911x supply vddvario not found, using dummy regulator
[ 1.799922] smsc911x smsc911x: (unregistered net_device): Driver Parameters:
[ 1.821212] smsc911x smsc911x: (unregistered net_device): LAN base: 0xC8000000
[ 1.842989] smsc911x smsc911x: (unregistered net_device): IRQ: 194
[ 1.861629] smsc911x smsc911x: (unregistered net_device): PHY will be autodetected.
[ 1.884711] smsc911x smsc911x: (unregistered net_device): BYTE_TEST: 0x87654321
[ 1.906753] smsc911x smsc911x: (unregistered net_device): LAN911x identified, idrev: 0x01150002, generation: 2
[ 1.939477] smsc911x smsc911x: eth0: Network interface: "eth0"
[ 1.957323] smsc911x smsc911x: eth0: HW_CFG EXT_PHY_DET clear, using internal PHY
[ 1.982196] smsc911x-mdio: probed
[ 1.992494] smsc911x smsc911x: eth0: PHY: addr 1, phy_id 0x0007C0D1
[ 2.011538] smsc911x smsc911x: eth0: attached PHY driver [SMSC LAN911x Internal PHY] (mii_bus:phy_addr=smsc911x-fffffff:01, irq=-1)
[ 2.047536] smsc911x smsc911x: eth0: Successfully verified loopback packet
[ 2.068587] smsc911x smsc911x: eth0: Passed Loop Back Test
[ 2.085167] smsc911x smsc911x: eth0: phy initialised successfully
[ 2.103647] smsc911x smsc911x: eth0: MAC Address is set to random_ether_addr
[ 2.124918] smsc911x smsc911x: eth0: MAC Address: 9e:04:cb:db:dc:fe
~ # /apps/bin/networking
[ 33.052642] smsc911x smsc911x: eth0: MAC Address: 00:0d:a7:00:0e:5c
[ 33.077692] smsc911x smsc911x: eth0: irq polarity: active low
[ 33.095092] smsc911x smsc911x: eth0: irq type: push-pull
[ 33.111148] smsc911x smsc911x: eth0: Testing irq handler using IRQ 194
[ 33.130867] smsc911x smsc911x: eth0: IRQ handler passed test using IRQ 194
[ 33.151606] smsc911x smsc911x: eth0: SMSC911x/921x identified at 0xc8000000, IRQ: 194
[ 33.175253] smsc911x smsc911x: eth0: maccr 0x1000000C, HASHH 0x00000000, HASHL 0x00000000
[ 33.199962] smsc911x smsc911x: eth0: maccr 0x1000000C, HASHH 0x00000000, HASHL 0x00000000
[ 33.224807] smsc911x smsc911x: eth0: maccr 0x1000200C, HASHH 0x00000000, HASHL 0x80000000
CONFIGURING NETWORK SETTINGS
10.0.3.150
0.0.0.0
255.255.255.0
[ 33.343312] smsc911x smsc911x: eth0: maccr 0x1000200C, HASHH 0x00000000, HASHL 0x80000000
[ 33.373718] smsc911x smsc911x: eth0: Interface stopped
[ 33.396198] smsc911x smsc911x: eth0: irq polarity: active low
[ 33.413592] smsc911x smsc911x: eth0: irq type: push-pull
[ 33.429650] smsc911x smsc911x: eth0: Testing irq handler using IRQ 194
[ 33.449370] smsc911x smsc911x: eth0: IRQ handler passed test using IRQ 194
[ 33.470110] smsc911x smsc911x: eth0: SMSC911x/921x identified at 0xc8000000, IRQ: 194
[ 33.493756] smsc911x smsc911x: eth0: maccr 0x1000000C, HASHH 0x00000000, HASHL 0x00000000
[ 33.518448] smsc911x smsc911x: eth0: maccr 0x1000000C, HASHH 0x00000000, HASHL 0x00000000
[ 33.543214] smsc911x smsc911x: eth0: maccr 0x1000200C, HASHH 0x00000000, HASHL 0x80000000
[ 33.569623] smsc911x smsc911x: eth0: maccr 0x1000200C, HASHH 0x00000000, HASHL 0x80000000
route: SIOCADDRT: Invalid argument
~ #
~ # [ 46.005715] smsc911x smsc911x: eth0: duplex state has changed
[ 46.023086] smsc911x smsc911x: eth0: configuring for full duplex mode
[ 46.042614] smsc911x smsc911x: eth0: rx pause disabled, tx pause disabled
[ 46.063096] smsc911x smsc911x: eth0: carrier state has changed
[ 46.080696] smsc911x smsc911x: eth0: configuring for no carrier
[ 47.095737] smsc911x smsc911x: eth0: carrier state has changed
[ 47.113360] smsc911x smsc911x: eth0: configuring for carrier OK
~ # ethtool eth0
Settings for eth0:
Supported ports: [ TP MII ]
Supported link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
Supported pause frame use: Symmetric Receive-only
Supports auto-negotiation: Yes
Advertised link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
Advertised pause frame use: Symmetric Receive-only
Advertised auto-negotiation: Yes
Speed: 100Mb/s
Duplex: Full
Port: MII
PHYAD: 1
Transceiver: external
Auto-negotiation: on
Current message level: 0x0000ffff (65535)
drv probe link timer ifdown ifup rx_err tx_err tx_queued intr tx_done rx_status pktdata hw wol 0x8000
Link detected: yes
I have captured the packets being dropped. When netif_receive returns 1 the packets is dropped.
[ 1211.434930] smsc911x_poll dropped(0) pktwords(268) pktlength(1070) netif_receive(0) rx_packets(148) rx_bytes(150726)
[ 1211.466585] 0000|9d 08 ed 51 00 00 00 00-0e 05 0c 00 00 00 00 00|..íQ............
[ 1211.489102] 0010|10 11 12 13 14 15 16 17-18 19 1a 1b 1c 1d 1e 1f|................
[ 1211.511614] 0020|20 21 22 23 24 25 26 27-28 29 2a 2b 2c 2d 2e 2f| !"#$%&'()*+,-./
[ 1211.534124] 0030|30 31 32 33 34 35 36 37-38 39 3a 3b 3c 3d 3e 3f|0123456789:;<=>?
[ 1211.556634] 0040|40 41 42 43 44 45 46 47-48 49 4a 4b 4c 4d 4e 4f|#ABCDEFGHIJKLMNO
[ 1211.579145] 0050|50 51 52 53 54 55 56 57-58 59 5a 5b 5c 5d 5e 5f|PQRSTUVWXYZ[\]^_
[ 1211.601655] 0060|60 61 62 63 64 65 66 67-68 69 6a 6b 6c 6d 6e 6f|`abcdefghijklmno
[ 1211.624164] 0070|70 71 72 73 74 75 76 77-78 79 7a 7b 7c 7d 7e 7f|pqrstuvwxyz{|}~.
[ 1211.646674] 0080|80 81 82 83 84 85 86 87-88 89 8a 8b 8c 8d 8e 8f|................
[ 1211.669184] 0090|90 91 92 93 94 95 96 97-98 99 9a 9b 9c 9d 9e 9f|................
[ 1211.691694] 00a0|a0 a1 a2 a3 a4 a5 a6 a7-a8 a9 aa ab ac ad ae af| ¡¢£¤¥¦§¨©ª«¬®¯
[ 1211.714203] 00b0|b0 b1 b2 b3 b4 b5 b6 b7-b8 b9 ba bb bc bd be bf|°±²³´µ¶·¸¹º»¼½¾¿
[ 1211.736713] 00c0|c0 c1 c2 c3 c4 c5 c6 c7-c8 c9 ca cb cc cd ce cf|ÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏ
[ 1211.759223] 00d0|d0 d1 d2 d3 d4 d5 d6 d7-d8 d9 da db dc dd de df|ÐÑÒÓÔÕÖ×ØÙÚÛÜÝÞß
[ 1211.781732] 00e0|e0 e1 e2 e3 e4 e5 e6 e7-e8 e9 ea eb ec ed ee ef|àáâãäåæçèéêëìíîï
[ 1211.804242] 00f0|f0 f1 f2 f3 f4 f5 f6 f7-f8 f9 fa fb fc fd fe ff|ðñòóôõö÷øùúûüýþÿ
[ 1211.826752] 0100|00 01 02 03 04 05 06 07-08 09 0a 0b __ __ __ __|............____
[ 1212.436944] smsc911x_poll dropped(0) pktwords(268) pktlength(1070) netif_receive(0) rx_packets(149) rx_bytes(151792)
[ 1212.468601] 0000|08 00 e9 ae 0a 1a 00 11-9e 08 ed 51 00 00 00 00|..é®......íQ....
[ 1212.491116] 0010|a4 0c 0c 00 00 00 00 00-10 11 12 13 14 15 16 17|¤...............
[ 1212.513629] 0020|18 19 1a 1b 1c 1d 1e 1f-20 21 22 23 24 25 26 27|........ !"#$%&'
[ 1212.536139] 0030|28 29 2a 2b 2c 2d 2e 2f-30 31 32 33 34 35 36 37|()*+,-./01234567
[ 1212.558650] 0040|38 39 3a 3b 3c 3d 3e 3f-40 41 42 43 44 45 46 47|89:;<=>?#ABCDEFG
[ 1212.581160] 0050|48 49 4a 4b 4c 4d 4e 4f-50 51 52 53 54 55 56 57|HIJKLMNOPQRSTUVW
[ 1212.603669] 0060|58 59 5a 5b 5c 5d 5e 5f-60 61 62 63 64 65 66 67|XYZ[\]^_`abcdefg
[ 1212.626179] 0070|68 69 6a 6b 6c 6d 6e 6f-70 71 72 73 74 75 76 77|hijklmnopqrstuvw
[ 1212.648689] 0080|78 79 7a 7b 7c 7d 7e 7f-80 81 82 83 84 85 86 87|xyz{|}~.........
[ 1212.671198] 0090|88 89 8a 8b 8c 8d 8e 8f-90 91 92 93 94 95 96 97|................
[ 1212.693709] 00a0|98 99 9a 9b 9c 9d 9e 9f-a0 a1 a2 a3 a4 a5 a6 a7|........ ¡¢£¤¥¦§
[ 1212.716219] 00b0|a8 a9 aa ab ac ad ae af-b0 b1 b2 b3 b4 b5 b6 b7|¨©ª«¬®¯°±²³´µ¶·
[ 1212.738728] 00c0|b8 b9 ba bb bc bd be bf-c0 c1 c2 c3 c4 c5 c6 c7|¸¹º»¼½¾¿ÀÁÂÃÄÅÆÇ
[ 1212.761238] 00d0|c8 c9 ca cb cc cd ce cf-d0 d1 d2 d3 d4 d5 d6 d7|ÈÉÊËÌÍÎÏÐÑÒÓÔÕÖ×
[ 1212.783747] 00e0|d8 d9 da db dc dd de df-e0 e1 e2 e3 e4 e5 e6 e7|ØÙÚÛÜÝÞßàáâãäåæç
[ 1212.806257] 00f0|e8 e9 ea eb ec ed ee ef-f0 f1 f2 f3 f4 f5 f6 f7|èéêëìíîïðñòóôõö÷
[ 1212.828767] 0100|f8 f9 fa fb fc fd fe ff-00 01 02 03 __ __ __ __|øùúûüýþÿ....____
[ 1213.437206] smsc911x_poll dropped(0) pktwords(268) pktlength(1070) netif_receive(1) rx_packets(150) rx_bytes(152858)
[ 1213.468860] 0000|52 2e 08 00 45 00 04 1c-00 00 40 00 40 01 1b 89|R...E.....#.#...
[ 1213.491374] 0010|0a 00 03 c3 0a 00 03 96-08 00 b0 ad 0a 1a 00 12|...Ã......°....
[ 1213.513885] 0020|9f 08 ed 51 00 00 00 00-dc 0c 0c 00 00 00 00 00|..íQ....Ü.......
[ 1213.536396] 0030|10 11 12 13 14 15 16 17-18 19 1a 1b 1c 1d 1e 1f|................
[ 1213.558906] 0040|20 21 22 23 24 25 26 27-28 29 2a 2b 2c 2d 2e 2f| !"#$%&'()*+,-./
[ 1213.581415] 0050|30 31 32 33 34 35 36 37-38 39 3a 3b 3c 3d 3e 3f|0123456789:;<=>?
[ 1213.603925] 0060|40 41 42 43 44 45 46 47-48 49 4a 4b 4c 4d 4e 4f|#ABCDEFGHIJKLMNO
[ 1213.626435] 0070|50 51 52 53 54 55 56 57-58 59 5a 5b 5c 5d 5e 5f|PQRSTUVWXYZ[\]^_
[ 1213.648944] 0080|60 61 62 63 64 65 66 67-68 69 6a 6b 6c 6d 6e 6f|`abcdefghijklmno
[ 1213.671454] 0090|70 71 72 73 74 75 76 77-78 79 7a 7b 7c 7d 7e 7f|pqrstuvwxyz{|}~.
[ 1213.693964] 00a0|80 81 82 83 84 85 86 87-88 89 8a 8b 8c 8d 8e 8f|................
[ 1213.716474] 00b0|90 91 92 93 94 95 96 97-98 99 9a 9b 9c 9d 9e 9f|................
[ 1213.738983] 00c0|a0 a1 a2 a3 a4 a5 a6 a7-a8 a9 aa ab ac ad ae af| ¡¢£¤¥¦§¨©ª«¬®¯
[ 1213.761493] 00d0|b0 b1 b2 b3 b4 b5 b6 b7-b8 b9 ba bb bc bd be bf|°±²³´µ¶·¸¹º»¼½¾¿
[ 1213.784003] 00e0|c0 c1 c2 c3 c4 c5 c6 c7-c8 c9 ca cb cc cd ce cf|ÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏ
[ 1213.806513] 00f0|d0 d1 d2 d3 d4 d5 d6 d7-d8 d9 da db dc dd de df|ÐÑÒÓÔÕÖ×ØÙÚÛÜÝÞß
[ 1213.829023] 0100|e0 e1 e2 e3 e4 e5 e6 e7-e8 e9 ea eb __ __ __ __|àáâãäåæçèéêë____
[ 1214.437438] smsc911x_poll dropped(0) pktwords(268) pktlength(1070) netif_receive(1) rx_packets(151) rx_bytes(153924)
[ 1214.469092] 0000|52 2e 08 00 45 00 04 1c-00 00 40 00 40 01 1b 89|R...E.....#.#...
[ 1214.491605] 0010|0a 00 03 c3 0a 00 03 96-08 00 b3 ac 0a 1a 00 13|...Ã......³¬....
[ 1214.514117] 0020|a0 08 ed 51 00 00 00 00-d8 0c 0c 00 00 00 00 00| .íQ....Ø.......
[ 1214.536627] 0030|10 11 12 13 14 15 16 17-18 19 1a 1b 1c 1d 1e 1f|................
[ 1214.559138] 0040|20 21 22 23 24 25 26 27-28 29 2a 2b 2c 2d 2e 2f| !"#$%&'()*+,-./
[ 1214.581645] 0050|30 31 32 33 34 35 36 37-38 39 3a 3b 3c 3d 3e 3f|0123456789:;<=>?
[ 1214.604154] 0060|40 41 42 43 44 45 46 47-48 49 4a 4b 4c 4d 4e 4f|#ABCDEFGHIJKLMNO
[ 1214.626664] 0070|50 51 52 53 54 55 56 57-58 59 5a 5b 5c 5d 5e 5f|PQRSTUVWXYZ[\]^_
[ 1214.649174] 0080|60 61 62 63 64 65 66 67-68 69 6a 6b 6c 6d 6e 6f|`abcdefghijklmno
[ 1214.671684] 0090|70 71 72 73 74 75 76 77-78 79 7a 7b 7c 7d 7e 7f|pqrstuvwxyz{|}~.
[ 1214.694194] 00a0|80 81 82 83 84 85 86 87-88 89 8a 8b 8c 8d 8e 8f|................
[ 1214.716703] 00b0|90 91 92 93 94 95 96 97-98 99 9a 9b 9c 9d 9e 9f|................
[ 1214.739213] 00c0|a0 a1 a2 a3 a4 a5 a6 a7-a8 a9 aa ab ac ad ae af| ¡¢£¤¥¦§¨©ª«¬®¯
[ 1214.761723] 00d0|b0 b1 b2 b3 b4 b5 b6 b7-b8 b9 ba bb bc bd be bf|°±²³´µ¶·¸¹º»¼½¾¿
[ 1214.784233] 00e0|c0 c1 c2 c3 c4 c5 c6 c7-c8 c9 ca cb cc cd ce cf|ÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏ
[ 1214.806742] 00f0|d0 d1 d2 d3 d4 d5 d6 d7-d8 d9 da db dc dd de df|ÐÑÒÓÔÕÖ×ØÙÚÛÜÝÞß
[ 1214.829252] 0100|e0 e1 e2 e3 e4 e5 e6 e7-e8 e9 ea eb __ __ __ __|àáâãäåæçèéêë____
Related
How can I parse form-data manually at node js?
I get chunks of the large file at the server side. And can't merge it, because it will borrow RAM equals to the (file size + file info size).
As far as I understand, I can't use the libraries, such as multer/connect-busboy/connect-multiparty etc.
In simple terms, now I get following data at server side and can't figure out how to receive, example, a file name, and how to determine, which byte is responsible for the beginning of the file.
[1] Get request...
[1] data: <Buffer 2d 2d 2d 2d 2d 2d 57 65 62 4b 69 74 46 6f 72 6d 42 6f 75 6e 64 61 72 79 62 66 30 31 63 62 36 38 71 4d 41 4d 36 6d 51 31 0d 0a 43 6f 6e 74 65 6e 74 2d ... 65486 more bytes>
[1] data: <Buffer 02 10 00 00 01 ce 00 00 01 ef 00 00 14 e4 00 00 01 de 00 00 01 b2 00 00 01 d8 00 05 f0 1a 00 00 06 70 00 00 00 fa 00 00 00 cf 00 00 0a 3b 00 00 01 4a ... 65486 more bytes>
[1] data: <Buffer 31 52 2e 9a 5b df 11 19 5f c2 5d 38 ed db 23 00 06 05 bd 8f 71 e7 6b 03 9d 3a 88 e3 24 10 00 0f a1 10 43 82 ff 67 bd 5d eb 8e 59 fe a9 d3 e6 45 f2 9e ... 65486 more bytes>
[1] data: <Buffer 2b 6c cf 18 40 13 d8 fd 09 fa 56 25 e6 6d 6a 57 94 8c a4 9c d1 7b 99 bb 20 c0 21 e7 4a 1f 72 5a a5 3d 8e 84 5d 97 eb 1b 0f db b1 a9 81 f9 db ef 06 36 ... 65486 more bytes>
[1] data: <Buffer bb 29 4b 0d 06 1d 69 e1 c7 47 a7 99 c6 e4 c3 48 2e 85 6a b3 57 01 68 09 00 aa 6d b4 7b c7 07 2f 73 c0 c4 6b c4 48 9b 8f 81 64 8e 25 c7 a3 de c3 4f 2a ... 65486 more bytes>
[1] data: <Buffer 21 2b 1c dd 57 02 23 f5 43 a1 70 72 b4 8d 8d a8 4a 4b c1 e1 21 75 84 ed 07 00 34 de 5c 8d b0 0a 6f 99 60 28 34 b1 c5 bd a2 3c 3e d5 01 0f 62 57 a8 e8 ... 65486 more bytes>
[1] data: <Buffer 2d 96 e3 47 75 ce 25 63 77 26 15 96 b6 43 b9 d2 59 7d 12 c9 64 b2 11 f2 39 29 3e bf 83 1a f3 15 7b 14 ee f3 33 52 5c 39 34 75 06 41 2f e7 11 e8 26 4e ... 65486 more bytes>
[1] data: <Buffer 4a 9d 20 c7 a8 55 35 22 26 ff c7 b4 11 d9 6c 4d ce e1 a0 b2 b3 01 37 da 6a ad ae 98 fd 9b 8e 9c 8b 4a 27 8e e3 10 4a dc 80 f2 50 df 88 d9 c8 f9 ef 48 ... 65486 more bytes>
[1] data: <Buffer 52 ee b3 96 1f 7c af df fa 3f 9c 9a f7 01 20 7d 3f ea 4e 7e aa 4e d9 57 31 cb b5 f3 09 49 c7 ee 92 83 2e cb 58 d2 ea 1b b0 35 2a 3c 6c 27 75 0c d0 39 ... 65486 more bytes>
...more
...more
...and more
After receiving all the above data, I need to get file name and send each chunk of the file(not other info, such as name/mime type) to another client. (It's file sharing web resource)
Another solutions?
At the same time, I could to send the file separated manually by the chunks of type ArrayBuffer. Each chunk would be encoded additional information, like a "file name", "mime type". But in this case, I should to separate file at client side and get again the above problem the lack of memory.
A working solution, but a bit insecure. Send the file name and mime type separately from the main file data.
The part of the code responsible for sending data:
app.get(`/${senderId}/get`, (request, response) => {
let countChunks = 0;
// waiting for the sender's request now...
app.post(`/${senderId}/send`, (requestSender, responseSender) => {
// start sharing...
let countChunks = 0;
requestSender.on("data", (chunk) => {
if (countChunks === 0) {
// need get the name from the chunks
const fileName = "test_name";
response.setHeader("Content-Disposition", `attachment; filename="${fileName}"`);
}
countChunks += 1;
// need to get the first byte of the file data and start sending starting with it
response.write(chunk);
})
requestSender.on("end", () => {
response.end();
})
})
})
I have a custom SOM (based on iMX6) board being developed that will run Ubuntu, and has several I2C devices attached to one of the iMX6 I2C "adapters". Given the hardware is not yet available, I'd like to write software to access and control said I2C devices, preferably by emulating them on my Ubuntu laptop; I'm thinking such as setup might also be useful for software testing.
I've been playing with i2cdetect to see what is on my laptop, and I found a few particularly intriguing things; consider these commands and the responses:
$ sudo i2cdetect -l
i2c-3 i2c i915 gmbus dpd I2C adapter
i2c-1 i2c i915 gmbus dpc I2C adapter
i2c-6 i2c DPDDC-C I2C adapter
i2c-4 i2c DPDDC-A I2C adapter
i2c-2 i2c i915 gmbus dpb I2C adapter
i2c-0 i2c Synopsys DesignWare I2C adapter I2C adapter
i2c-5 i2c DPDDC-B I2C adapter
$ sudo i2cdetect -y -r 4
0 1 2 3 4 5 6 7 8 9 a b c d e f
00: 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f
10: 10 11 12 13 14 15 16 17 18 19 1a 1b 1c 1d 1e 1f
20: 20 21 22 23 24 25 26 27 28 29 2a 2b 2c 2d 2e 2f
30: 30 31 32 33 34 35 36 37 38 39 3a 3b 3c 3d 3e 3f
40: 40 41 42 43 44 45 46 47 48 49 4a 4b 4c 4d 4e 4f
50: 50 51 52 53 54 55 56 57 58 59 5a 5b 5c 5d 5e 5f
60: 60 61 62 63 64 65 66 67 68 69 6a 6b 6c 6d 6e 6f
70: 70 71 72 73 74 75 76 77
I understand this to mean that, for each cell in that table that has a number, a device with that number as its address is present on the bus; for example, the first number, 0x03, means there is a device with I2C address 0x03. It seems rather unlikely that the i2c-4 adapter really has 117 devices attached to it! (FWIW most of the other adapters have no devices, with only two showing a small number of devices on each bus; these appear to be "real" I2C buses.) But back to i2c-4 - is that some sort of simulated (or emulated) adapter with simulated devices on it? I decided to see what I could i2cdump data from one of the suspect devices, and found something like this:
$ sudo i2cdump -y 4 0x3 b
0 1 2 3 4 5 6 7 8 9 a b c d e f 0123456789abcdef
00: 00 00 02 02 04 04 06 06 08 08 0a 0a 0c 0c 0e 0e ..??????????????
10: 10 10 12 12 14 14 16 16 18 18 1a 1a 1c 1c 1e 1e ????????????????
20: 20 20 22 22 24 24 26 26 28 28 2a 2a 2c 2c 2e 2e ""$$&&((**,,..
30: 30 30 32 32 34 34 36 36 38 38 3a 3a 3c 3c 3e 3e 0022446688::<<>>
40: 40 40 42 42 44 44 46 46 48 48 4a 4a 4c 4c 4e 4e ##BBDDFFHHJJLLNN
50: 50 50 52 52 54 54 56 56 58 58 5a 5a 5c 5c 5e 5e PPRRTTVVXXZZ\\^^
60: 60 60 62 62 64 64 66 66 68 68 6a 6a 6c 6c 6e 6e ``bbddffhhjjllnn
70: 70 70 72 72 74 74 76 76 78 78 7a 7a 7c 7c 7e 7e pprrttvvxxzz||~~
80: 80 80 82 82 84 84 86 86 88 88 8a 8a 8c 8c 8e 8e ????????????????
90: 90 90 92 92 94 94 96 96 98 98 9a 9a 9c 9c 9e 9e ????????????????
a0: a0 a0 a2 a2 a4 a4 a6 a6 a8 a8 aa aa ac ac ae ae ????????????????
b0: b0 b0 b2 b2 b4 b4 b6 b6 b8 b8 ba ba bc bc be be ????????????????
c0: c0 c0 c2 c2 c4 c4 c6 c6 c8 c8 ca ca cc cc ce ce ????????????????
d0: d0 d0 d2 d2 d4 d4 d6 d6 d8 d8 da da dc dc de de ????????????????
e0: e0 e0 e2 e2 e4 e4 e6 e6 e8 e8 ea ea ec ec ee ee ????????????????
f0: f0 f0 f2 f2 f4 f4 f6 f6 f8 f8 fa fa fc fc fe fe ????????????????
This worked for device addresses 0x03 through 0x07; above that, the hex data was replaced with XX! Anyway, I'm guessing this table shows 256 bytes of data on the "device".
I tried to read/write/read a byte, but it doesn't work:
$ sudo i2cget -y 4 0x3 0xff
0xfe
$ sudo i2cset -y 4 0x3 0xff 0x27
$ sudo i2cget -y 4 0x3 0xff
0xfe
With all that as background, here are my questions:
Is i2c-4 really an simulated I2C adapter, and what is its purpose?
Am I using i2cget and i2cset correctly, and if not, where am I going wrong? (Of course, this assumes i2c-4 address 0x3 works as I expected)
If not, is there a way to emulate an I2C device (and probably, adapter) so that I can write software that is able to read/write to it?
Of course, question 3 is the main focus here...
Thanks!
Answering this in case someone else has the same/similar question.
The secret is to use i2c-stub, which I had heard of but didn't get a clear understanding of what it is. Here is all I was looking for:
# Set up fake device
$ sudo modprobe i2c-dev
$ sudo modprobe i2c-stub chip_addr=0x03
$ i2cdetect -l
...
i2c-7 unknown SMBus stub driver N/A <<--- Here it is!
# Read data
$ sudo i2cdump -y -r 0-7 7 0x03 b
0 1 2 3 4 5 6 7 8 9 a b c d e f 0123456789abcdef
00: 00 00 00 00 00 00 00 00 .?......
# Write data
$ sudo i2cset -y 7 0x03 0x01 0x27
# Read data again
$ sudo i2cdump -y -r 0-7 7 0x03 b
0 1 2 3 4 5 6 7 8 9 a b c d e f 0123456789abcdef
00: 00 27 00 00 00 00 00 00 .?......
I am using FIO tool on linux to run some IO's. I am interested to look at data contents that are generated as part of the FIO command.
My command:
sudo fio --name=randwrite --ioengine=libaio --iodepth=1 --rw=write --bs=4k --direct=0 --size=512M --numjobs=1 --runtime=240 --group_reporting --filename=venkata --buffer_compress_percentage=50 --output=fioad
I am interested to see how the data is generated with 50% compress buffer option. Is there any way to look / output the FIO IO input data?
Is there any way to look / output the FIO IO input data?
Just examine the file the I/O is being done on (venkata) with a tool like hexdump? The one thing I'd caution is because your I/O file is 512 megabytes big you will almost certainly want to use the -n flag of hexdump or pipe the output to less to prevent your terminal overflowing... Here's a safe reduced example job to make analysis quicker/easier:
$ fio --name=bufcontents --filename=/tmp/fio.tmp --size=4k --bs=4k --buffer_compress_percentage=50
bufcontents: (g=0): rw=read, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=1
[...]
Run status group 0 (all jobs):
READ: bw=4000KiB/s (4096kB/s), 4000KiB/s-4000KiB/s (4096kB/s-4096kB/s), io=4096B (4096B), run=1-1msec
$ hexdump -C /tmp/fio.tmp
00000000 35 e0 28 cc 38 a0 99 16 06 9c 6a a9 f2 cd e9 0a |5.(.8.....j.....|
00000010 80 53 2a 07 09 e5 0d 15 70 4a 25 f7 0b 39 9d 18 |.S*.....pJ%..9..|
00000020 4e a9 ac d9 8e ab 9d 13 29 95 8e 86 9b 48 4e 12 |N.......)....HN.|
00000030 a5 52 3d 26 cc 05 db 1b 54 2a 75 db 9a 4d d8 1d |.R=&....T*u..M..|
00000040 4a a5 44 c6 f8 9b 39 00 a9 94 23 c6 5c d0 90 0c |J.D...9...#.\...|
00000050 95 f2 6f ce f9 b6 c2 13 52 7e 83 40 a7 6f ce 07 |..o.....R~.#.o..|
00000060 ca 6f e7 28 b3 2d e4 10 f9 ed 37 ad 42 f1 48 0f |.o.(.-....7.B.H.|
00000070 bf 7d aa 5e 8c c7 d6 00 b7 cf f5 4c 9c a9 cd 08 |.}.^.......L....|
00000080 f6 39 c3 a1 b8 8e 8c 18 3e 67 3d 77 f5 40 ef 0b |.9......>g=w.#..|
00000090 e7 ac 48 fb 7f 2c 35 1c 9c 95 f5 a8 eb a7 d7 19 |..H..,5.........|
000000a0 b3 b2 50 aa 82 20 89 0f 56 96 f0 fb e7 ce d4 03 |..P.. ..V.......|
000000b0 ca 12 53 b4 e4 9b e0 17 59 62 25 0d 53 b9 0f 0e |..S.....Yb%.S...|
000000c0 4b 2c 78 b0 97 70 47 13 89 85 e9 df d6 15 6a 09 |K,x..pG.......j.|
000000d0 b1 b0 38 19 c6 d2 c0 0e 16 96 ce 6a bc 0d 0c 15 |..8........j....|
000000e0 c2 d2 4e 42 50 4c dd 08 58 da e8 9e 62 88 c1 15 |..NBPL..X...b...|
000000f0 4b 1b b1 e6 97 e1 ee 00 69 a3 30 6f da e8 9e 17 |K.......i.0o....|
00000100 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
*
00000200 a8 71 09 48 d3 ad 5f c5 35 2e 2d b0 b5 51 5a 13 |.q.H.._.5.-..QZ.|
[...]
(100 in hex is 256 in decimal, 200 in hex is 512 in decimal etc)
Alternatively, since you asked this on Stack Overflow (which is for programming questions), fio is open source and the fio source is available on GitHub, we can read the source there (note that you didn't say WHICH version of fio you are using so I shall assume the very latest at the tile of writing which is fio-3.21):
https://github.com/axboe/fio/blob/fio-3.21/io_u.c#L2166 (fill_io_buffer() in io_u.c): when compress_percentage is non-zero, fio will try to repeatedly call fill_random_buf_percentage() until it has created a block sized buffer worth of data. In the example job you set a block size of 4k (so the min and max block sizes will both be 4k) and compress_chunk will be 512 (its default). Therefore fill_random_buf_percentage() will be called 8 times and each time with its segment and len parameters being 512.
https://github.com/axboe/fio/blob/fio-3.21/lib/rand.c#L137 (__fill_random_buf_percentage() in rand.c): This works out the percentage of the segment it is filling that needs to be random data and the rest is set to either zeros (the default) or the buffer_pattern (if set). With your example the first 256 bytes will be random data and the next 256 will be zeros.
I'm looking at socket.io packets and they are TCP. When I review the value, I see encrypted data. Where and how is socket.io encrypting the messages that pass through the soccket? Is it really secure? This is a VM running with requests over http.
For example, I see
0000 bc ec 23 c3 64 6a 00 15 5d 01 59 06 08 00 45 08 ..#.dj..].Y...E.
0010 00 58 68 cc 40 00 40 06 4e 6c c0 a8 01 05 c0 a8 .Xh.#.#.Nl......
0020 01 0a 00 16 c6 51 15 15 7f 44 69 87 60 58 50 18 .....Q...Di.\XP.`
0030 0b 2e 6c ae 00 00 8b 6f 92 7f b9 1b c2 d6 54 60 ..l....o......T
0040 5e 24 65 2a 0c d6 87 90 fd 87 63 30 9d 69 11 26 ^$e*......c0.i.&
0050 4d 75 8c 7b 5e b2 ad 47 12 9d 05 d0 7c 3b 7c 9e Mu.{^..G....|;|.
0060 b1 0d a0 b7 f1 88 ......
I'm spying on some RS485 communication between two devices. The only information I know is that the master is 'pinging' the slave constantly. Its checking if it is still connected and functioning.
The first i need to detect is the correct properties of the signal (baud rate, data bits, parity, stop bits).
My idea is to listen on the communication using all the most common settings. Then I would write an algorithm that would look for patterns in the string of hex numbers. Is that a good approach? (note. I don't have an oscilloscope )
I first used most common settings 115200 8n1, and at a first glance it seems that they are correct.
There are 6 repeating patterns in the raw code. I'm assuming that those are the actual commands for the protocol. Now how to decode the protocol used here? If it is not some in-house protocol that they used. Note here that the slave is disconnected and this is just transmissions from master.
1. 00 02 c0 fe ff 22 00 08 2a
2. 00 02 c0 ff fe 12 00 19 6e
3. 00 02 c0 ff 01 12 00 7a a1
4. 00 02 c0 01 ff 62 00 67 6c
5. 00 02 c0 01 ff 32 00 d8 62
6. 00 02 c0 01 ff 22 00 ab 61
There are a bunch of random hex values in between the patterns. Due to the nature of the RS485 signal I'm assuming that this is just noise?
Here is the the full captured data
02 c0 ff fe 12 00 19 6e 28 68 cb c2 9f 12 ed 13
c5 13 3f 09 92 dd 26 d6 64 7f 00 02 c0 fe ff 22
00 08 2a 2f 20 0d 0c 37 3a 0c 0a c1 58 f4 8e 21
4b ce 12 a8 b0 4e 16 80 8c a8 06 3a 09 9c c8 24
49 33 01 42 04 00 02 c0 ff fe 12 00 19 6e 77 92
59 43 9e 65 85 63 ab ff 71 62 a8 69 46 d3 53 b9
00 02 c0 fe ff 22 00 08 2a bd 4a ef 4d 60 00 1a
37 6c df e1 fc 1f 3e 04 61 a8 ad 4d e3 28 c8 23
68 31 28 39 ee 01 d9 12 27 5e 6d 00 02 c0 ff fe
12 00 19 6e df 00 76 b4 f9 aa 22 47 a7 47 9f b9
a4 4b 44 84 cf e5 00 02 c0 fe ff 22 00 08 2a 2a
a4 4a cb a0 ca a9 ca ad ca 00 72 ca 0f c2 ac b4
1c c8 37 21 97 bc c3 af f8 27 71 be 3e 75 f0 94
54 00 02 c0 ff 01 12 00 7a a1 7a bd 2b b0 f5 64
e7 b2 76 76 33 1b 7e 22 b2 a1 17 30 00 02 c0 01
ff 62 00 67 6c 45 c3 4a 8c 3a d0 d2 03 c7 39 1a
c5 15 8c e0 ac 9e e9 01 46 0d 6f 75 cd ad af 17
08 c8 e1 29 78 66 9a 29 0e 2b 30 56 8e 1f 0e 5a
7b 16 15 b2 51 2c e9 4b 4c 40 6b a2 8b 73 6a d2
8b f9 da 58 9b 02 de 71 f8 1c 0a c0 08 38 72 51
ac c8 bc 75 c8 2f 69 3d 53 ed c1 46 90 6a 26 44
09 4e f9 13 ed 0b 71 00 02 c0 ff 01 12 00 7a a1
19 4f a5 ce 15 02 50 ff 81 7f 10 db 8e 38 d1 da
b3 11 00 02 c0 01 ff 32 00 d8 62 fa f6 0b e8 e0
6f 8a 82 d3 e0 36 f5 be 79 cb ab 32 b8 17 a9 dd
a1 7c 9e 9b 22 b9 19 8c ef 26 55 a0 6c be 0d 64
d6 c3 e3 55 d9 dd eb b2 c7 00 80 f6 89 00 02 c0
ff 01 12 00 7a a1 19 8e b3 8e 01 3a d6 eb 29 bc
4c de 32 31 13 18 0d ae 00 02 c0 01 ff 22 00 ab
61 d9 fa 8f 29 fc 41 9e 19 a9 0c 55 eb 79 92 9d
17 5f 9d 88 3a e1 d3 2d 42 27 2e 43 f8 05 a4 03
4b a3 fe 00 02 c0 ff fe 12 00 19 6e a4 52 a3 b6
91 d2 90 21 4f fd c4 5e ba 0e 1f 10 6c 30 00 02
c0 fe ff 22 00 08 2a a7 8c b3 71 8b 91 d2 a1 0f
c6 b6 cb 0f 9b fe e3 50 0b 1d cc c8 9c d5 e5 f8
85 ff 0d 3e e9 54 b7 ec 0d 00 02 c0 ff fe 12 00
19 6e 75 13 65 35 e1 17 ef 6f be 91 3a b1 52 43
4b b7 74 2e 00 02 c0 fe ff 22 00 08 2a 5e 46 3e
84 e5 ae e6 c8 45 01 e8 a7 a7 7c 27 d3 ff bf 90
a9 2f 4c b6 2d 6b 8a 18 c1 15 aa 8e d6 8e c9 00
02 c0 ff 01 12 00 7a a1 f3 05 85 da 10 da c0 60
10 31 9e 04 89 23 1f 51 9b e5 00 02 c0 01 ff 62
00 67 6c 89 50 18 c5 74 d1 48 ef ca 80 e5 0e 86
24 59 ad c2 71 39 12 1f 7f b9 14 40 5d 06 0e 98
ad b3 84 18 9c 59 0b d6 fb ae 86 b0 4f b8 cb a6
a8 d9 74 a4 e8 fe 07 95 dc 42 b9 92 38 6b f7 ad
a5 9b ce 7a 9c b3 3b 0c bb 5c d7 b8 ca 9e 18 d7
cb 2e 11 0f 45 31 65 7b 5f 5c b5 44 b7 30 fb 6e
8d 3c f4 5f 28 00 02 c0 ff 01 12 00 7a a1 15 7e
be ae 7e e4 a9 98 cf 87 3e ef cb 9a c0 ed 76 d5
00 02 c0 01 ff 32 00 d8 62 6f 12 b4 55 2d ad 42
19 9b 91 05 0f c1 a9 c1 e4 46 13 a4 e0 50 c1 ca
c9 7d 6a 02 3f 94 8b ae 0f 01 68 58 ff ad 18 04
43 c7 98 2e ce 43 f5 64 31 78 fa 00 02 c0 ff fe
12 00 19 6e a7 a5 37 aa 6e da 26 79 58 90 47 33
5f f0 a5 33 09 5d 00 02 c0 fe ff 22 00 08 2a 5e
6c 21 68 d2 aa 0e b6 e8 03 21 5e 3a bc b5 5f 9f
21 2e 3d ad cb d6 d8 2d 12 77 48 7b b0 3b 33 18
df 00 02 c0 ff fe 12 00 19 6e 79 8f aa 97 56 ac
a4 86 8b 5b 39 8c cf 9a 09 ab fa 63 00 02 c0 fe
ff 22 00 08 2a 43 2d 94 ba a3 06 0b de 34 00 5c
24 f6 e9 45 4c 0d 69 17 ed 70 fd c0 00 ba ab 8b
ca fc 6c e1 c4 76 76 00 02 c0 ff fe 12 00 19 6e
e1 b8 57 cd f3 6c 75 86 9a 0d 7d 9f 91 a5 59 08
ae 1d 00 02 c0 fe ff 22 00 08 2a 3c cb 32 3e 78
bc 88 6d 8c 16 64 7b 74 74 36 d1 0b 10 36 cb 08
c6 60 69 42 0d 8c ce bc d5 ca ec 41 fc 00 02 c0
ff 01 12 00 7a a1 f1 45 3a be 4f ce bd 22 a9 e8
e4 1f 60 fb ff ad 0c 7f 00 02 c0 01 ff 62 00 67
6c dd 09 fd 95 dc 92 77 0e 57 bf 2c c5 b9 ae 64
f6 9e c4 c8 e3 47 75 b4 75 89 97 a9 41 c6 d4 f7
bd c8 9e 28 2b 09 98 6d 15 53 12 6d 5e 57 37 fc
e4 59 cc bc 88 25 07 0b 26 b1 fa 4d 0f 3f 87 f9
04 fe 25 41 7d 97 9c 0c 46 70 b4 b4 4b f7 19 4d
02 8e 18 4c b7 83 2c 94 0f 9b aa 1a 2a f8 39 90
8a 74 5d 00 02 c0 ff 01 12 00 7a a1 39 b7 63 f0
10 8b 5c 7c 9d 34 34 4a a2 35 f0 c0 5b 24 00 02
c0 01 ff 22 00 ab 61 5a 91 b4 24 c9 62 1c 0b 72
83 e7 d2 68 9b 2b 55 7d f4 1a f0 7e f3 4b ac e1
ae fb ad 4c 60 bc cb 05 75 00 02 c0 ff 01 12 00
7a a1 6e b3 8f 72 fb b1 9a 48 c8 4e 79 52 b4 f5
13 fb 43 c9 00 02 c0 01 ff 32 00 d8 62 8a 20 4e
3d 67 d2 12 bb c5 e4 a7 ce 4c 64 db 17 f4 51 bb
b7 f7 ea 2c 0a 11 5e 65 c8 ea e2 7d 60 9b d2 c8
ae 52 b1 7f b3 50 2e 32 df 57 d7 2e 2e cb cf 00
02 c0 ff fe 12 00 19 6e 38 bb 48 00 2e 70 28 93
5a 47 cd 1b 44 d5 eb d0 13 2b 00 02 c0 fe ff 22
00 08 2a 54 a8 6b 65 2c d0 c7 89 a3 63 85 47 55
4e 6d b7 23 32 c5 5b df 12 93 be 11 4f c2 ba d0
13 76 b3 be 82 00 02 c0 ff 01 12 00 7a a1 c7 23
14 2c 9a dc ea 73 12 b4 18 3e 4a 6d 54 49 c4 4d
00 02 c0 01 ff 22 00 ab 61 90 33 f8 0e 6d 9c 2f
05 02 41 28 d1 55 2c c5 3d 64 c4 0f df 07 1a 4a
fc 1f ed a8 2f f4 2a a4 a2 0f aa 00 02 c0 ff fe
12 00 19 6e 31 c4 36 83 7f ad ac 53 ac e3 21 64
b8 28 5f ea 33 28 00 02 c0 fe ff 22 00 08 2a 1a
b8 af 63 ef 64 dc 2d 32 5b 48 1c e3 b8 a7 f0 ed
32 65 af 21 1a 09 d4 1d 29 82 5b c7 cd 42 1c ff
3a 00 02 c0 ff 01 12 00 7a a1 28 fc d5 32 2b 5c
8b f8 bc a1 8d 7b 86 89 e6 b6 66 e5 00 02 c0 01
ff 62 00 67 6c 92 66 ea a2 63 4a 02 81 05 21 a0
32 f6 f1 1e 1a 92 36 92 e2 67 89 5d 73 92 13 fe
fa fa aa 8e 06 f8 c4 f7 a3 42 a2 78 05 31 07 1c
42 78 ec 0b 88 8e a8 ae 67 59 a6 93 eb 3b dd aa
32 ca dd 77 f7 d0 3d 6e a2 61 e8 63 13 b0 65 3f
d3 d0 22 1f 26 18 e9 62 b3 9a 8b f7 5d c1 27 77
3c f8 37 5a 42 9a 7a 00 02 c0 ff 01 12 00 7a a1
9e f1 fc 84 34 e5 ce 59 9c 7a 24 75 c7 76 55 52
01 0b 00 02 c0 01 ff 32 00 d8 62 41 31 93 a0 fd
3a 0a 8a 0c 90 fb 6a 15 9f 46 8f d2 db 4a 99 85
5a 01 fb dd 7a 05 7a 73 3b a8 24 c8 c4 a5 31 30
b3 11 0b 8e 7b 20 ac b8 ba 66 c0 c7 88 00 02 c0
ff fe 12 00 19 6e d5 48 35 ab a7 4e fb ec 6e 99
37 df 89 9e c7 bb 44 2f 00 02 c0 fe ff 22 00 08
2a 93 d0 d9 92 c0 30 05 d7 5a da e3 9f b7 24 9c
dc 14 f5 02 81 89 b9 c0 a7 14 59 a6 39 c9 f6 92
9f 79 5a 00 02 c0 ff fe 12 00 19 6e f7 57 db 1a
53 6c 5b 2d 31 ee f2 8d 08 33 1b 02 fb 1c 00 02
c0 fe ff 22 00 08 2a 89 a2 19 9e fd 2d 83 a4 e8
7c 25 a8 aa e2 5d d8 14 85 34 66 cc 1f 98 56 f0
60 95 f9 67 4e 85 60 09 a4 00 02 c0 ff fe 12 00
19 6e ac 66 8d fe ce 6a 61 77 e1 1f 2c 76 f1 17
14 17 34 87 00 02 c0 fe ff 22 00 08 2a 69 69 d4
80 7f fa aa bc 97 1b 37 b1 89 64 06 af 6c 80 4c
6f 53 fe 6a 78 39 66 83 a7 71 cb f4 7b ba a7 00
02 c0 ff 01 12 00 7a a1 46 d4 ab 96 8b 93 62 a0
c5 d4 b1 68 a5 94 64 61 87 d5 00 02 c0 01 ff 22
00 ab 61 a1 ac a1 97 2f 69 82 d3 c1 5b 94 3c 92
7e 36 4a 3f 7f 44 69 d5 cc 2f cd 54 41 60 f0 43
97 90 1f 8c 6d 00 02 c0 ff 01 12 00 7a a1 1e d9
f4 c5 ec e5 40 50 5c bc 61 2a 04 10 5e c8 fd 73
00 02 c0 01 ff 62 00 67 6c 33 f2 d5 1f 5d b4 43
64 c3 83 f2 a8 ed 4f dd b2 eb 08 d9 ac fa 23 64
52 5c 49 09 fb d4 bf bd 69 20 e8 76 84 c4 27 21
58 d6 12 eb f8 56 01 86 ca 0c 8b 61 4d 5b 6d 42
5a c6 83 8f f7 31 f6 7a ca 42 e7 13 5a f6 35 50
f7 46 a0 5e 3d 0a 89 57 a7 13 88 87 00 03 ab 73
26 f1 b2 73 34 6d d9 56 3c b5 f0 00 02 c0 ff 01
12 00 7a a1 d2 fa f4 0f 57 4d 06 8c b8 74 f0 ac
ef 17 01 93 f1 09 00 02 c0 01 ff 32 00 d8 62 ac
85 4d ca c0 d3 48 02 b1 e3 b9 a9 c0 88 ba e5 69
80 9a d8 13 dc 7f 2f 98 41 43 41 1f 38 c2 e0 02
b7 e5 71 cf fd 99 9b f8 40 ec 16 0c 0c 76 51 34
ab 00 02 c0 ff fe 12 00 19 6e 27 6d a3 4a e4 a4
ee 5a 6e c2 f2 4f 7b 31 f6 61 84 04 00 02 c0 fe
ff 22 00 08 2a d5 dd 0f 67 a3 23 5b 2e 7a 1f 65
49 80 55 f6 f5 91 14 b4 19 ae 51 8e ed 87 df 31
d4 4a a3 48 aa 61 5f 00 02 c0 ff fe 12 00 19 6e
24 dc ff 2a 70 9b af 7e 7c a0 96 3f ca ec 58 f7
e0 d3 00 02 c0 fe ff 22 00 08 2a 47 e0 02 03 c8
49 11 2c bc e2 b8 85 dd 24 b3 f5 bd 0d 00 29 04
01 e1 4f 95 a7 7c 4d 65 e1 6f da 18 b7 00 02 c0
ff fe 12 00 19 6e fa b4 8e 15 b5 6b b0 bd ff 25
f4 62 8b 63 77 de a7 2b 00 02 c0 fe ff 22 00 08
2a e1 c4 dd 89 b9 67 47 7d 1e 9b 47 58 52 03 90
6b 70 e7 ec e7 99 67 49 57 c5 04 ec 85 7c e0 b6
03 b4 e6 00 02 c0 ff 01 12 00 7a a1 47 7f e8 39
0d fa 71 81 30 6a be c4 d0 a2 0d 79 0f d9 00 02
c0 01 ff 62 00 67 6c e1 f9 68 c7 a1 57 b7 56 dd
8c f7 f9 33 28 7f 42 a8 8f e8 e8 5e 97 52 9b 5a
4b 9d 40 48 f9 c3 cd 2a fb 41 29 8d 44 06 0f 47
1a bb 85 c4 90 0f fe 1d a6 a3 a4 81 78 84 28 4e
f7 63 2f 06 8b af 90 45 0b 6d b8 79 c3 e0 f6 b1
e3 ca fd ea bd a8 6e 68 d6 1b d8 f2 8a 0a 1d 3a
32 8b f8 4b 52 6e c0 90 f0 00 02 c0 ff 01 12 00
7a a1 06 2f 7e 85 03 16 5b 4f 59 47 7d 72 ba df
6a 2d a5 d9 00 02 c0 01 ff 32 00 d8 62 97 cc 1d
63 a1 93 18 d3 3a 0f e2 11 bc c7 ca 49 3b 6a 62
59 80 a4 7c 98 a5 bf 68 25 f2 4e a2 71 6f 43 d1
65 0e cc 92 b4 69 c3 61 85 6b 38 9a cc bc 6d 00
02 c0 ff fe 12 00 19 6e 9a 08 1f 9a 70 7c 3d dd
f9 fd 33 1c 67 c0 7a 81 15 d1 00 02 c0 fe ff 22
00 08 2a 37 43 2d bc a8 f7 96 9f d1 29 bd 5f f1
5f db 46 8f 24 5b 80 86 be 69 e0 97 54 e0 23 5d
f8 47 39 b6 e2 00 02 c0 ff fe 12 00 19 6e 4b 2d
b9 28 7a 4e 36 3c 44 3c 1b 42 9e f9 be 20 1a 2f
00 02 c0 fe ff 22 00 08 2a 0a 36 07 6b 1e 1b 69
c8 12 e8 38 18 1c 0c de cb 05 bc 8b e1 94 e2 91
bc 1e 02 d2 09 4b a9 7a dc a7 e8 00 02 c0 ff 01
12 00 7a a1 52 2d 31 20 02 aa e5 4d 2c 5d 5a b7
71 1a b5 5e 45 19 00 02 c0 01 ff 22 00 ab 61 4a
2a 17 6c 19 c6 5a b4 a7 d5 a1 17 7d 1a 96 f6 63
e5 a6 5e 98 0b 09 7d 4b 5e 5f 67 43 2d 24 7a 20
05 00 02 c0 ff 01 12 00 7a a1 8b 07 bf a0 db 8f
c9 ff 71 32 eb 84 ac 52 69 c3 45 05 00 02 c0 01
ff 62 00 67 6c c2 55 6a d3 4d 1b 98 72 22 3a 1d
73 73 dd 2b 98 1b 65 c5 95 e7 0c bc a8 d0 b9 87
9a 3d b0 f4 53 18 13 a1 6c 95 9a a5 9e e3 d4 9e
a3 02 0c 81 46 f4 43 26 4b e5 fc 84 11 1b 79 a6
dc fe 5c 03 f1 b2 31 5b fb 93 47 9c 2c 65 62 4b
13 93 47 af b9 02 7d df ba ea 4b b1 aa 69 8f 69
3c ae 1b 05 e4 fe a6 00 02 c0 ff 01 12 00 7a a1
9f e9 11 5f 36 e1 3d fa c0 8c ec c3 68 b1 32 18
c6 71 00 02 c0 01 ff 32 00 d8 62 bd cf c7 e1 66
0d c7 2f 3f 7b be 68 55 ca 96 0d 15 75 7c ce 31
69 f0 c5 dd c1 f1 d4 29 03 17 38 e8 0e bc dc 43
41 47 a8 4b 8f 47 5c b6 d4 be bf 32 5f 00 02 c0
ff fe 12 00 19 6e 97 d8 44 4a 3a e6 cd f7 eb d7
bb 7e ff 22 e1 c8 ac fc 00 02 c0 fe ff 22 00 08
2a 88 a5 23 8e 29 64 42 fd d2 eb 33 38 04 4d a5
5e 69 27 a6 be 1e d6 0d 32 66 20 4c c1 a6 f9 d2
00 17 40 00 02 c0 ff 01 12 00 7a a1 0d 3f 76 e7
d7 38 dc 4d dc 74 f1 c3 c5 1d 99 c2 fd 09 00 02
c0 01 ff 22 00 ab 61 3e af bf 0d ff 5d ac 58 00
1b 17 8a a5 93 6d 3b b2 60 eb 2f 1d df 1c b4 92
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08 2a 40 2a 69 d4 25 46 bb 59 0d 34 75 47 a0 91
6c 2e d4 1e 7a 57 e8 95 15 7c 50 5d da 33 94 d8
2a 79 57 22 00 02 c0 ff 01 12 00 7a a1 43 db 54
8d 13 22 f8 62 eb 36 4f e7 c8 76 cf 5f bd 55 00
02 c0 01 ff 62 00 67 6c a3 52 91 a4 be 33 6f 86
88 38 96 01 78 ea 38 fa 19 30 86 33 b4 c0 f3 d2
8a 7a 05 d9 af fb 17 ea 9b a5 07 f1 ba 65 9d 83
49 88 8b 32 da cc e2 af 63 51 7f 00 b1 6a 7b 25
18 ca a3 82 a5 3e a0 2e 7c 9a 3e 05 ec cd e1 e3
ee d8 79 df e4 e0 f1 cb 02 f3 4e d5 8e 8c ed 17
8c 82 e1 f5 c1 e2 af 55 17 58 00 02 c0 ff 01 12
00 7a a1 8c 32 73 da 85 5d 6f d1 32 cf f4 48 06
0b a2 ac a9 30 00 02 c0 01 ff 32 00 d8 62 f4 bd
91 11 ca 66 dc de bf af 65 3b 7a c5 21 99 42 01
9e 8c d4 bd a7 c5 3b 9a e9 41 18 8c 9c ea 62 28
fa 83 93 61 4c 9d 1c 33 d3 3f 47 3a 5f bc 38 19
00 02 c0 ff fe 12 00 19 6e 8f 54 a1 ad 9f 45 5d
cb 22 de ab 90 5e f4 97 13 8d ed 00 02 c0 fe ff
22 00 08 2a 8a eb 1a 5b ee 12 60 fd eb ca be 61
1b 64 a6 57 f5 5f 92 1c eb 39 b0 95 1d 28 b1 c3
6d 95 54 a2 cf 7c 00 02 c0 ff fe 12 00 19 6e 8f
52 81 b6 06 a9 b9 59 75 68 b2 9c 65 63 86 55 c0
1c 00 02 c0 fe ff 22 00 08 2a 10 d9 9b 3d 3e 42
e9 3e 64 20 b1 36 b3 0d dd 83 5f f9 35 f9 7d 08
e0 ee d9 12 16 41 d7 31 b2 5f 11 bc 00 02 c0 ff
fe 12 00 19 6e 4a 42 1e 1c 6f 20 a6 ac 65 b7 ac
48 15 a7 8d c0 d3 71 00 02 c0 fe ff 22 00 08 2a
02 4c 52 d6 af 36 a3 1f 01 c8 3b d4 97 fd dc b9
be 71 64 c5 29 c7 ae 44 b8 ff fb 82 3b 68 59 08
6a 6f 00 02 c0 ff fe 12 00 19 6e 85 4d 84 21 eb
c8 47 c1 63 ba cf c5 73 87 1c 54 5d c3 00 02 c0
fe ff 22 00 08 2a 34 bd e3 99 75 02 3b 55 83 db
6a c3 fc 49 b1 a7 8a 80 bb 15 c2 4c 65 0d 53 b2
33 47 bc 7e 2c 21 49 f2 00 02 c0 ff 01 12 00 7a
a1 bf 81 13 e2 71 79 5a 5d 28 61 60 c0 1e d1 51
d9 32 05 00 02 c0 01 ff 62 00 67 6c 46 b1 40 0f
5c 7a db 02 7e 2e 1d c5 39 37 f3 ab 2c ee ae fa
69 d4 18 09 84 b4 95 f2 f0 ad 29 23 70 ba a6 49
d6 9b c0 fe 3f 9b 83 83 75 9b 28 73 6f e8 1f 9a
67 3c f2 37 33 83 cc ad 61 fb 76 4d de fa 16 33
68 15 85 e0 99 f9 ae d5 d4 25 c6 de 6a 0e b4 b5
ef 1d d6 56 40 e9 91 1f 1b e9 02 a1 ea 8a 00 02
c0 ff 01 12 00 7a a1 32 69 9a 88 af a2 ed 68 39
4f fe 8e d1 98 74 43 e8 8c 00 02 c0 01 ff 22 00
ab 61 24 21 12 1d d1 c6 6c ad 05
A partial answer, since nobody had other insights to offer:
Your serial settings are correct, and your master telegrams are ended by a non-standard 16 byte CRC checksum. I found this with a modified CRC puzzle solver I wrote for other CRC Stackoverflow posts. The Docklight CRC specs are CRC:16,1021,0000,0000,No,No and your checksum is in Little Endian format (low significant byte first) at the end of the telegram.
Here is the Docklight output including a test where I correctly re-created the first three master telegram checksums
Trying CRC spec : CRC:16,1021,0000,0000,No,No (LittleEndian)
Found it!
Relevant sequence for checksum from startpos=1 to endpos=7
00 02 C0 FE FF 22 00
CRC spec: CRC:16,1021,0000,0000,No,No (LittleEndian)
CRC result: 2A 08 (Integer = 10760)
Use the Send button to send some predefined sequences...
30.08.2017 14:00:08.494 [TX] - 00 02 C0 FE FF 22 00 08 2A
30.08.2017 14:00:09.028 [TX] - 00 02 C0 FF FE 12 00 19 6E
30.08.2017 14:00:09.411 [TX] - 00 02 C0 FF 01 12 00 7A A1
I will improve this answer later. Knowing now that every message has this CRC checksum at the end, Docklight should be able to split the full transfer into its individual protoocol frames.