Re: Accessing I2C-Bus via ELV USB-I2C
Axel Rau <[email protected]> Tue, 4 Oct 2022 12:03:19 +0200
| Newsgroups | gmane.os.freebsd.devel.hardware |
|---|---|
| Message-ID | <017C6EBE-910E-43E7-AAF7-A3D9ECE85EFF__39088.0743436114$1664877820$gmane$org@Chaos1.DE> |
Am 04.10.2022 um 10:39 schrieb Hans Petter Selasky <[email protected]>: >=20 > That looks normal. >=20 > The DONE transaction transferred the SETUP packet, but still lists = frame [0], but is not dumping the data, because it has already been = sent. frame [0] is always the SETUP packet for control endpoints. >=20 So where should I dig further to find out why the read at 09:28:44.885162= shows only 'e:' from the string, shown completely at 09:28:47.463632 (2nd block) ? 09:28:44.878743 usbus1.3 SUBM-BULK-EP=3D00000001,SPD=3DFULL,NFR=3D1,SLEN=3D= 4,IVAL=3D0 frame[0] WRITE 1 bytes 0000 3F -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- |? = | flags 0x8 <PIPE_BOF|0> status 0xca023 <OPEN|TRANSFERRING|STARTED|BDMA_ENABLE|BDMA_SETUP|CAN_CAN= CEL_IMMED|DOING_CALLBACK|0> 09:28:44.878816 usbus1.3 DONE-BULK-EP=3D00000001,SPD=3DFULL,NFR=3D1,SLEN=3D= 0,IVAL=3D0,ERR=3D0 frame[0] WRITE 1 bytes flags 0x8 <PIPE_BOF|0> status 0xca021 <OPEN|STARTED|BDMA_ENABLE|BDMA_SETUP|CAN_CANCEL_IMMED|DOI= NG_CALLBACK|0> 09:28:44.885162 usbus1.3 DONE-BULK-EP=3D00000081,SPD=3DFULL,NFR=3D1,SLEN=3D= 4,IVAL=3D0,ERR=3D0 frame[0] READ 2 bytes 0000 65 3A -- -- -- -- -- -- -- -- -- -- -- -- -- -- |e: = | flags 0xa <SHORT_XFER_OK|PIPE_BOF|0> status 0xcb021 <OPEN|STARTED|SHORT_XFER_OK|BDMA_ENABLE|BDMA_SETUP|CAN_CA= NCEL_IMMED|DOING_CALLBACK|0> 09:28:44.885176 usbus1.3 SUBM-BULK-EP=3D00000081,SPD=3DFULL,NFR=3D1,SLEN=3D= 0,IVAL=3D0 frame[0] READ 1024 bytes flags 0xa <SHORT_XFER_OK|PIPE_BOF|0> status 0xeb023 <OPEN|TRANSFERRING|STARTED|SHORT_XFER_OK|BDMA_ENABLE|BDMA= _SETUP|CURR_DMA_SET|CAN_CANCEL_IMMED|DOING_CALLBACK|0> 09:28:44.888153 usbus1.3 DONE-BULK-EP=3D00000081,SPD=3DFULL,NFR=3D1,SLEN=3D= 24,IVAL=3D0,ERR=3D0 frame[0] READ 24 bytes 0000 31 31 35 32 30 30 20 62 69 74 2F 73 0D 0A 49 32 |115200 = bit/s..I2| 0010 43 2D 43 6C 6F 63 6B 3A -- -- -- -- -- -- -- -- |C-Clock: = | flags 0xa <SHORT_XFER_OK|PIPE_BOF|0> =20 Here I get the right response: 09:28:47.457426 usbus1.3 SUBM-BULK-EP=3D00000001,SPD=3DFULL,NFR=3D1,SLEN=3D= 4,IVAL=3D0 frame[0] WRITE 1 bytes 0000 3F -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- |? = | flags 0x8 <PIPE_BOF|0> status 0xca023 <OPEN|TRANSFERRING|STARTED|BDMA_ENABLE|BDMA_SETUP|CAN_CAN= CEL_IMMED|DOING_CALLBACK|0> 09:28:47.457462 usbus1.3 DONE-BULK-EP=3D00000001,SPD=3DFULL,NFR=3D1,SLEN=3D= 0,IVAL=3D0,ERR=3D0 frame[0] WRITE 1 bytes flags 0x8 <PIPE_BOF|0> status 0xca021 <OPEN|STARTED|BDMA_ENABLE|BDMA_SETUP|CAN_CANCEL_IMMED|DOI= NG_CALLBACK|0> 09:28:47.463632 usbus1.3 DONE-BULK-EP=3D00000081,SPD=3DFULL,NFR=3D1,SLEN=3D= 68,IVAL=3D0,ERR=3D0 frame[0] READ 66 bytes 0000 0D 0A 45 4C 56 20 55 53 42 2D 49 32 43 2D 49 6E |..ELV USB-I2C-I= n| 0010 74 65 72 66 61 63 65 20 76 31 2E 38 20 28 43 61 |terface v1.8 = (Ca| 0020 6C 3A 35 43 29 0D 0A 4C 61 73 74 20 41 64 72 65 |l:5C)..Last = Adre| 0030 73 73 3A 30 78 30 30 0D 0A 42 61 75 64 72 61 74 |ss:0x00..Baudra= t| 0040 65 3A -- -- -- -- -- -- -- -- -- -- -- -- -- -- |e: = | flags 0xa <SHORT_XFER_OK|PIPE_BOF|0> status 0xeb021 <OPEN|STARTED|SHORT_XFER_OK|BDMA_ENABLE|BDMA_SETUP|CURR_D= MA_SET|CAN_CANCEL_IMMED|DOING_CALLBACK|0> 09:28:47.463644 usbus1.3 SUBM-BULK-EP=3D00000081,SPD=3DFULL,NFR=3D1,SLEN=3D= 0,IVAL=3D0 frame[0] READ 1024 bytes flags 0xa <SHORT_XFER_OK|PIPE_BOF|0> status 0xcb023 <OPEN|TRANSFERRING|STARTED|SHORT_XFER_OK|BDMA_ENABLE|BDMA= _SETUP|CAN_CANCEL_IMMED|DOING_CALLBACK|0> Axel =2D-- PGP-Key: CDE74120 =E2=98=80 computing @ chaos claudius >=20 =2D-- PGP-Key: CDE74120 =E2=98=80 computing @ chaos claudius