6 Replies Latest reply on Nov 14, 2019 2:09 AM by YatheeshK_36

    cypress dual channel serial-usb problem in raspbian

    faM_4540176

      i bought a light engine and it consists of cypress dual channel module. i use raspbian stretch lite. the problem is that when i attach the device with usb cable to raspberry pi, "lsusb" shows the device but no there is no node created in "/dev" like: /dev/ttyUSB0 . i installed CyUSBSerial_SDK_Linux, nothing happened. "dmesg" command shows the device is connected but no tty is bonded.

        • 1. Re: cypress dual channel serial-usb problem in raspbian
          RashiV_61

          Hello,

           

          Please refer to this thread Need some help on CY7C65215 Cypress IC module usb-spi interface

          Please attach a screenshot where the Kernel configuration is displayed.

          • 2. Re: cypress dual channel serial-usb problem in raspbian
            faM_4540176

            as i use raspbian stretch lite, i just modprobe configs, and here is the part belongs to cypress:

            • 3. Re: cypress dual channel serial-usb problem in raspbian
              faM_4540176

              recent changes happened. i used Cypress usb-serial configuration utility and changed SCB0 and SCB1 from I2C and SPI to UART-CDC. now, when i connect the device to my pi, both ports is bond to ACM0 and ACM1. when i run "screen" command, like: "screen /dev/ttyACM1 9600,cs8", nothing happened. i can not send command to device. i changed and tested some options like "baud rate" "number of pins" but couldn't identify the problem.

               

              here is dmesg results:

               

               

              pi@raspberrypi:~ $ dmesg

              [    0.000000] Booting Linux on physical CPU 0x0

              [    0.000000] Linux version 4.19.57-v7+ (dom@buildbot) (gcc version 4.9.3 (crosstool-NG crosstool-ng-1.22.0-88-g8460611)) #1244 SMP Thu Jul 4 18:45:25 BST 2019

              [    0.000000] CPU: ARMv7 Processor [410fd034] revision 4 (ARMv7), cr=10c5383d

              [    0.000000] CPU: div instructions available: patching division code

              [    0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache

              [    0.000000] OF: fdt: Machine model: Raspberry Pi 3 Model B Plus Rev 1.3

              [    0.000000] Memory policy: Data cache writealloc

              [    0.000000] cma: Reserved 8 MiB at 0x37800000

              [    0.000000] On node 0 totalpages: 229376

              [    0.000000]   Normal zone: 2016 pages used for memmap

              [    0.000000]   Normal zone: 0 pages reserved

              [    0.000000]   Normal zone: 229376 pages, LIFO batch:63

              [    0.000000] random: get_random_bytes called from start_kernel+0xac/0x4b4 with crng_init=0

              [    0.000000] percpu: Embedded 17 pages/cpu s39488 r8192 d21952 u69632

              [    0.000000] pcpu-alloc: s39488 r8192 d21952 u69632 alloc=17*4096

              [    0.000000] pcpu-alloc: [0] 0 [0] 1 [0] 2 [0] 3

              [    0.000000] Built 1 zonelists, mobility grouping on.  Total pages: 227360

              [    0.000000] Kernel command line: coherent_pool=1M 8250.nr_uarts=0 bcm2708_fb.fbwidth=656 bcm2708_fb.fbheight=416 bcm2708_fb.fbswap=1 vc_mem.mem_base=0x3ec00000 vc_mem.mem_size=0x40000000  dwc_otg.lpm_enable=0 console=ttyS0,115200 console=tty1 root=PARTUUID=c9ad3800-02 rootfstype=ext4 elevator=deadline fsck.repair=yes rootwait

              [    0.000000] Dentry cache hash table entries: 131072 (order: 7, 524288 bytes)

              [    0.000000] Inode-cache hash table entries: 65536 (order: 6, 262144 bytes)

              [    0.000000] Memory: 886308K/917504K available (8192K kernel code, 629K rwdata, 2176K rodata, 1024K init, 821K bss, 23004K reserved, 8192K cma-reserved)

              [    0.000000] Virtual kernel memory layout:

                                 vector  : 0xffff0000 - 0xffff1000   (   4 kB)

                                 fixmap  : 0xffc00000 - 0xfff00000   (3072 kB)

                                 vmalloc : 0xb8800000 - 0xff800000   (1136 MB)

                                 lowmem  : 0x80000000 - 0xb8000000   ( 896 MB)

                                 modules : 0x7f000000 - 0x80000000   (  16 MB)

                                   .text : 0x(ptrval) - 0x(ptrval)   (9184 kB)

                                   .init : 0x(ptrval) - 0x(ptrval)   (1024 kB)

                                   .data : 0x(ptrval) - 0x(ptrval)   ( 630 kB)

                                    .bss : 0x(ptrval) - 0x(ptrval)   ( 822 kB)

              [    0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=4, Nodes=1

              [    0.000000] ftrace: allocating 26351 entries in 78 pages

              [    0.000000] rcu: Hierarchical RCU implementation.

              [    0.000000] NR_IRQS: 16, nr_irqs: 16, preallocated irqs: 16

              [    0.000000] arch_timer: cp15 timer(s) running at 19.20MHz (phys).

              [    0.000000] clocksource: arch_sys_counter: mask: 0xffffffffffffff max_cycles: 0x46d987e47, max_idle_ns: 440795202767 ns

              [    0.000007] sched_clock: 56 bits at 19MHz, resolution 52ns, wraps every 4398046511078ns

              [    0.000023] Switching to timer-based delay loop, resolution 52ns

              [    0.000285] Console: colour dummy device 80x30

              [    0.000903] console [tty1] enabled

              [    0.000959] Calibrating delay loop (skipped), value calculated using timer frequency.. 38.40 BogoMIPS (lpj=192000)

              [    0.001005] pid_max: default: 32768 minimum: 301

              [    0.001361] Mount-cache hash table entries: 2048 (order: 1, 8192 bytes)

              [    0.001397] Mountpoint-cache hash table entries: 2048 (order: 1, 8192 bytes)

              [    0.002331] CPU: Testing write buffer coherency: ok

              [    0.002817] CPU0: thread -1, cpu 0, socket 0, mpidr 80000000

              [    0.003492] Setting up static identity map for 0x100000 - 0x10003c

              [    0.003662] rcu: Hierarchical SRCU implementation.

              [    0.004485] smp: Bringing up secondary CPUs ...

              [    0.005348] CPU1: thread -1, cpu 1, socket 0, mpidr 80000001

              [    0.006279] CPU2: thread -1, cpu 2, socket 0, mpidr 80000002

              [    0.007146] CPU3: thread -1, cpu 3, socket 0, mpidr 80000003

              [    0.007267] smp: Brought up 1 node, 4 CPUs

              [    0.007349] SMP: Total of 4 processors activated (153.60 BogoMIPS).

              [    0.007373] CPU: All CPU(s) started in HYP mode.

              [    0.007394] CPU: Virtualization extensions available.

              [    0.008375] devtmpfs: initialized

              [    0.021361] VFP support v0.3: implementor 41 architecture 3 part 40 variant 3 rev 4

              [    0.021639] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns

              [    0.021687] futex hash table entries: 1024 (order: 4, 65536 bytes)

              [    0.022293] pinctrl core: initialized pinctrl subsystem

              [    0.023170] NET: Registered protocol family 16

              [    0.026126] DMA: preallocated 1024 KiB pool for atomic coherent allocations

              [    0.031798] hw-breakpoint: found 5 (+1 reserved) breakpoint and 4 watchpoint registers.

              [    0.031835] hw-breakpoint: maximum watchpoint size is 8 bytes.

              [    0.032055] Serial: AMBA PL011 UART driver

              [    0.034364] bcm2835-mbox 3f00b880.mailbox: mailbox enabled

              [    0.069189] bcm2835-dma 3f007000.dma: DMA legacy API manager at (ptrval), dmachans=0x1

              [    0.071117] SCSI subsystem initialized

              [    0.071362] usbcore: registered new interface driver usbfs

              [    0.071445] usbcore: registered new interface driver hub

              [    0.071557] usbcore: registered new device driver usb

              [    0.090307] raspberrypi-firmware soc:firmware: Attached to firmware from 2019-07-09 14:42, variant start_x

              [    0.100136] raspberrypi-firmware soc:firmware: Firmware hash is 6c3fe3f096a93de3b34252ad98cdccadeb534be2

              [    0.111803] clocksource: Switched to clocksource arch_sys_counter

              [    0.200626] VFS: Disk quotas dquot_6.6.0

              [    0.200738] VFS: Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)

              [    0.200950] FS-Cache: Loaded

              [    0.201175] CacheFiles: Loaded

              [    0.211182] NET: Registered protocol family 2

              [    0.212010] tcp_listen_portaddr_hash hash table entries: 512 (order: 0, 6144 bytes)

              [    0.212074] TCP established hash table entries: 8192 (order: 3, 32768 bytes)

              [    0.212206] TCP bind hash table entries: 8192 (order: 4, 65536 bytes)

              [    0.212411] TCP: Hash tables configured (established 8192 bind 8192)

              [    0.212572] UDP hash table entries: 512 (order: 2, 16384 bytes)

              [    0.212639] UDP-Lite hash table entries: 512 (order: 2, 16384 bytes)

              [    0.212965] NET: Registered protocol family 1

              [    0.213560] RPC: Registered named UNIX socket transport module.

              [    0.213587] RPC: Registered udp transport module.

              [    0.213609] RPC: Registered tcp transport module.

              [    0.213630] RPC: Registered tcp NFSv4.1 backchannel transport module.

              [    0.215253] hw perfevents: enabled with armv7_cortex_a7 PMU driver, 7 counters available

              [    0.218243] Initialise system trusted keyrings

              [    0.218451] workingset: timestamp_bits=14 max_order=18 bucket_order=4

              [    0.228294] FS-Cache: Netfs 'nfs' registered for caching

              [    0.228881] NFS: Registering the id_resolver key type

              [    0.228926] Key type id_resolver registered

              [    0.228948] Key type id_legacy registered

              [    0.228979] nfs4filelayout_init: NFSv4 File Layout Driver Registering...

              [    0.231262] Key type asymmetric registered

              [    0.231292] Asymmetric key parser 'x509' registered

              [    0.231357] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 250)

              [    0.231538] io scheduler noop registered

              [    0.231563] io scheduler deadline registered (default)

              [    0.231758] io scheduler cfq registered

              [    0.231782] io scheduler mq-deadline registered (default)

              [    0.231867] io scheduler kyber registered

              [    0.234098] bcm2708_fb soc:fb: FB found 1 display(s)

              [    0.243590] Console: switching to colour frame buffer device 82x26

              [    0.250410] bcm2708_fb soc:fb: Registered framebuffer for display 0, size 656x416

              [    0.257157] bcm2835-rng 3f104000.rng: hwrng registered

              [    0.259832] vc-mem: phys_addr:0x00000000 mem_base=0x3ec00000 mem_size:0x40000000(1024 MiB)

              [    0.265153] vc-sm: Videocore shared memory driver

              [    0.267897] gpiomem-bcm2835 3f200000.gpiomem: Initialised: Registers at 0x3f200000

              [    0.283762] brd: module loaded

              [    0.296332] loop: module loaded

              [    0.299371] Loading iSCSI transport class v2.0-870.

              [    0.302571] libphy: Fixed MDIO Bus: probed

              [    0.305079] usbcore: registered new interface driver lan78xx

              [    0.307526] usbcore: registered new interface driver smsc95xx

              [    0.309872] dwc_otg: version 3.00a 10-AUG-2012 (platform bus)

              [    0.340175] dwc_otg 3f980000.usb: base=(ptrval)

              [    0.542810] Core Release: 2.80a

              [    0.545181] Setting default values for core params

              [    0.547615] Finished setting default values for core params

              [    0.750343] Using Buffer DMA mode

              [    0.752740] Periodic Transfer Interrupt Enhancement - disabled

              [    0.755157] Multiprocessor Interrupt Enhancement - disabled

              [    0.757521] OTG VER PARAM: 0, OTG VER FLAG: 0

              [    0.759859] Dedicated Tx FIFOs mode

              [    0.762578] WARN::dwc_otg_hcd_init:1045: FIQ DMA bounce buffers: virt = b7914000 dma = 0xf7914000 len=9024

              [    0.767142] FIQ FSM acceleration enabled for :

                             Non-periodic Split Transactions

                             Periodic Split Transactions

                             High-Speed Isochronous Endpoints

                             Interrupt/Control Split Transaction hack enabled

              [    0.778022] dwc_otg: Microframe scheduler enabled

              [    0.778083] WARN::hcd_init_fiq:457: FIQ on core 1

              [    0.780309] WARN::hcd_init_fiq:458: FIQ ASM at 80650d3c length 36

              [    0.782523] WARN::hcd_init_fiq:497: MPHI regs_base at b8810000

              [    0.784780] dwc_otg 3f980000.usb: DWC OTG Controller

              [    0.787043] dwc_otg 3f980000.usb: new USB bus registered, assigned bus number 1

              [    0.789366] dwc_otg 3f980000.usb: irq 56, io mem 0x00000000

              [    0.791673] Init: Port Power? op_state=1

              [    0.793934] Init: Power Port (0)

              [    0.796354] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002, bcdDevice= 4.19

              [    0.800858] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1

              [    0.803299] usb usb1: Product: DWC OTG Controller

              [    0.805667] usb usb1: Manufacturer: Linux 4.19.57-v7+ dwc_otg_hcd

              [    0.808089] usb usb1: SerialNumber: 3f980000.usb

              [    0.811039] hub 1-0:1.0: USB hub found

              [    0.813332] hub 1-0:1.0: 1 port detected

              [    0.816095] dwc_otg: FIQ enabled

              [    0.816102] dwc_otg: NAK holdoff enabled

              [    0.816107] dwc_otg: FIQ split-transaction FSM enabled

              [    0.816118] Module dwc_common_port init

              [    0.816400] usbcore: registered new interface driver usb-storage

              [    0.818853] mousedev: PS/2 mouse device common for all mice

              [    0.822021] bcm2835-wdt bcm2835-wdt: Broadcom BCM2835 watchdog timer

              [    0.824631] bcm2835-cpufreq: min=600000 max=1400000

              [    0.827432] sdhci: Secure Digital Host Controller Interface driver

              [    0.829838] sdhci: Copyright(c) Pierre Ossman

              [    0.832631] mmc-bcm2835 3f300000.mmcnr: could not get clk, deferring probe

              [    0.835532] sdhost-bcm2835 3f202000.mmc: could not get clk, deferring probe

              [    0.838199] sdhci-pltfm: SDHCI platform and OF driver helper

              [    0.842255] ledtrig-cpu: registered to indicate activity on CPUs

              [    0.844982] hidraw: raw HID events driver (C) Jiri Kosina

              [    0.847749] usbcore: registered new interface driver usbhid

              [    0.850373] usbhid: USB HID core driver

              [    0.853697] vchiq: vchiq_init_state: slot_zero = (ptrval), is_master = 0

              [    0.857829] [vc_sm_connected_init]: start

              [    0.866604] [vc_sm_connected_init]: end - returning 0

              [    0.870133] Initializing XFRM netlink socket

              [    0.872594] NET: Registered protocol family 17

              [    0.875097] Key type dns_resolver registered

              [    0.877936] Registering SWP/SWPB emulation handler

              [    0.881038] registered taskstats version 1

              [    0.883474] Loading compiled-in X.509 certificates

              [    0.893146] uart-pl011 3f201000.serial: cts_event_workaround enabled

              [    0.895676] 3f201000.serial: ttyAMA0 at MMIO 0x3f201000 (irq = 81, base_baud = 0) is a PL011 rev2

              [    0.902547] mmc-bcm2835 3f300000.mmcnr: mmc_debug:0 mmc_debug2:0

              [    0.905087] mmc-bcm2835 3f300000.mmcnr: DMA channel allocated

              [    0.933692] sdhost: log_buf @ (ptrval) (f7913000)

              [    0.971089] mmc1: queuing unknown CIS tuple 0x80 (2 bytes)

              [    0.975093] mmc1: queuing unknown CIS tuple 0x80 (3 bytes)

              [    0.978950] mmc1: queuing unknown CIS tuple 0x80 (3 bytes)

              [    0.983951] mmc1: queuing unknown CIS tuple 0x80 (7 bytes)

              [    0.986073] mmc0: sdhost-bcm2835 loaded - DMA enabled (>1)

              [    0.989451] of_cfs_init

              [    0.991574] of_cfs_init: OK

              [    0.994098] Waiting for root device PARTUUID=c9ad3800-02...

              [    1.031927] Indeed it is in host mode hprt0 = 00021501

              [    1.101821] mmc0: host does not support reading read-only switch, assuming write-enable

              [    1.104360] random: fast init done

              [    1.109263] mmc0: new high speed SDHC card at address 0001

              [    1.112731] mmcblk0: mmc0:0001 SPCC 7.38 GiB

              [    1.117983]  mmcblk0: p1 p2

              [    1.144748] mmc1: new high speed SDIO card at address 0001

              [    1.146949] EXT4-fs (mmcblk0p2): INFO: recovery required on readonly filesystem

              [    1.149101] EXT4-fs (mmcblk0p2): write access will be enabled during recovery

              [    1.241867] usb 1-1: new high-speed USB device number 2 using dwc_otg

              [    1.244193] Indeed it is in host mode hprt0 = 00001101

              [    1.410742] EXT4-fs (mmcblk0p2): recovery complete

              [    1.431683] EXT4-fs (mmcblk0p2): mounted filesystem with ordered data mode. Opts: (null)

              [    1.436310] VFS: Mounted root (ext4 filesystem) readonly on device 179:2.

              [    1.450723] devtmpfs: mounted

              [    1.458703] Freeing unused kernel memory: 1024K

              [    1.461644] Run /sbin/init as init process

              [    1.482141] usb 1-1: New USB device found, idVendor=0424, idProduct=2514, bcdDevice= b.b3

              [    1.487401] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0

              [    1.490771] hub 1-1:1.0: USB hub found

              [    1.493530] hub 1-1:1.0: 4 ports detected

              [    1.811856] usb 1-1.1: new high-speed USB device number 3 using dwc_otg

              [    1.942140] usb 1-1.1: New USB device found, idVendor=0424, idProduct=2514, bcdDevice= b.b3

              [    1.947531] usb 1-1.1: New USB device strings: Mfr=0, Product=0, SerialNumber=0

              [    1.951062] hub 1-1.1:1.0: USB hub found

              [    1.953967] hub 1-1.1:1.0: 3 ports detected

              [    2.276822] systemd[1]: System time before build time, advancing clock.

              [    2.309611] dwc_otg_handle_wakeup_detected_intr lxstate = 2

              [    2.439077] NET: Registered protocol family 10

              [    2.443208] Segment Routing with IPv6

              [    2.507830] systemd[1]: systemd 241 running in system mode. (+PAM +AUDIT +SELINUX +IMA +APPARMOR +SMACK +SYSVINIT +UTMP +LIBCRYPTSETUP +GCRYPT +GNUTLS +ACL +XZ +LZ4 +SECCOMP +BLKID +ELFUTILS +KMOD -IDN2 +IDN -PCRE2 default-hierarchy=hybrid)

              [    2.517266] systemd[1]: Detected architecture arm.

              [    2.540751] systemd[1]: Set hostname to <raspberrypi>.

              [    2.558851] systemd[1]: Failed to bump fs.file-max, ignoring: Invalid argument

              [    2.831883] usb 1-1.1.1: new high-speed USB device number 4 using dwc_otg

              [    2.962374] usb 1-1.1.1: New USB device found, idVendor=0424, idProduct=7800, bcdDevice= 3.00

              [    2.967925] usb 1-1.1.1: New USB device strings: Mfr=0, Product=0, SerialNumber=0

              [    2.983441] systemd[1]: File /lib/systemd/system/systemd-journald.service:12 configures an IP firewall (IPAddressDeny=any), but the local system does not support BPF/cgroup based firewalling.

              [    2.992428] systemd[1]: Proceeding WITHOUT firewalling in effect! (This warning is only shown for the first loaded unit using IP firewalling.)

              [    3.238227] lan78xx 1-1.1.1:1.0 (unnamed net_device) (uninitialized): No External EEPROM. Setting MAC Speed

              [    3.245601] libphy: lan78xx-mdiobus: probed

              [    3.283532] lan78xx 1-1.1.1:1.0 (unnamed net_device) (uninitialized): int urb period 64

              [    3.642100] random: systemd: uninitialized urandom read (16 bytes read)

              [    3.656254] random: systemd: uninitialized urandom read (16 bytes read)

              [    3.663734] systemd[1]: Created slice User and Session Slice.

              [    3.671193] random: systemd: uninitialized urandom read (16 bytes read)

              [    3.675125] systemd[1]: Set up automount Arbitrary Executable File Formats File System Automount Point.

              [    3.685770] systemd[1]: Listening on initctl Compatibility Named Pipe.

              [    3.693298] systemd[1]: Listening on fsck to fsckd communication Socket.

              [    4.523514] EXT4-fs (mmcblk0p2): re-mounted. Opts: (null)

              [    4.644301] systemd-journald[116]: Received request to flush runtime journal from PID 1

              [    5.327710] vc_sm_cma: module is from the staging directory, the quality is unknown, you have been warned.

              [    5.330483] bcm2835_vc_sm_cma_probe: Videocore shared memory driver

              [    5.330500] [vc_sm_connected_init]: start

              [    5.338153] media: Linux media interface: v0.10

              [    5.339047] [vc_sm_connected_init]: installed successfully

              [    5.386317] videodev: Linux video capture interface: v2.00

              [    5.520348] bcm2835_mmal_vchiq: module is from the staging directory, the quality is unknown, you have been warned.

              [    5.522899] bcm2835_mmal_vchiq: module is from the staging directory, the quality is unknown, you have been warned.

              [    5.582834] snd_bcm2835: module is from the staging directory, the quality is unknown, you have been warned.

              [    5.586828] bcm2835_v4l2: module is from the staging directory, the quality is unknown, you have been warned.

              [    5.594644] bcm2835_audio soc:audio: card created with 8 channels

              [    5.600941] bcm2835_codec: module is from the staging directory, the quality is unknown, you have been warned.

              [    5.744957] cfg80211: Loading compiled-in X.509 certificates for regulatory database

              [    5.865643] cfg80211: Loaded X.509 cert 'sforshee: 00b28ddf47aef9cea7'

              [    5.965430] brcmfmac: F1 signature read @0x18000000=0x15264345

              [    5.982557] brcmfmac: brcmf_fw_alloc_request: using brcm/brcmfmac43455-sdio for chip BCM4345/6

              [    5.983388] usbcore: registered new interface driver brcmfmac

              [    6.219607] bcm2835-codec bcm2835-codec: Device registered as /dev/video10

              [    6.219622] bcm2835-codec bcm2835-codec: Loaded V4L2 decode

              [    6.223281] random: crng init done

              [    6.223296] random: 7 urandom warning(s) missed due to ratelimiting

              [    6.231488] bcm2835-codec bcm2835-codec: Device registered as /dev/video11

              [    6.231502] bcm2835-codec bcm2835-codec: Loaded V4L2 encode

              [    6.239519] bcm2835-codec bcm2835-codec: Device registered as /dev/video12

              [    6.239533] bcm2835-codec bcm2835-codec: Loaded V4L2 isp

              [    6.245808] brcmfmac: brcmf_fw_alloc_request: using brcm/brcmfmac43455-sdio for chip BCM4345/6

              [    6.301961] brcmfmac: brcmf_c_preinit_dcmds: Firmware: BCM4345/6 wl0: Feb 27 2018 03:15:32 version 7.45.154 (r684107 CY) FWID 01-4fbe0b04

              [    8.035238] uart-pl011 3f201000.serial: no DMA platform data

              [    8.234675] 8021q: 802.1Q VLAN Support v1.8

              [    8.558167] Adding 102396k swap on /var/swap.  Priority:-2 extents:1 across:102396k SSFS

              [    8.592255] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready

              [    8.592292] brcmfmac: power management disabled

              [    8.857607] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready

              [    8.857615] 8021q: adding VLAN 0 to HW filter on device eth0

              [    8.864102] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready

              [   14.951005] Bluetooth: Core ver 2.22

              [   14.951100] NET: Registered protocol family 31

              [   14.951106] Bluetooth: HCI device and connection manager initialized

              [   14.951127] Bluetooth: HCI socket layer initialized

              [   14.951139] Bluetooth: L2CAP socket layer initialized

              [   14.951177] Bluetooth: SCO socket layer initialized

              [   14.972965] Bluetooth: HCI UART driver ver 2.3

              [   14.972973] Bluetooth: HCI UART protocol H4 registered

              [   14.973015] Bluetooth: HCI UART protocol Three-wire (H5) registered

              [   14.973120] Bluetooth: HCI UART protocol Broadcom registered

              [   15.244119] Bluetooth: BNEP (Ethernet Emulation) ver 1.3

              [   15.244127] Bluetooth: BNEP filters: protocol multicast

              [   15.244139] Bluetooth: BNEP socket layer initialized

              [   65.551856] usb 1-1.2: new full-speed USB device number 5 using dwc_otg

              [   65.688883] usb 1-1.2: New USB device found, idVendor=04b4, idProduct=0005, bcdDevice= 0.00

              [   65.688898] usb 1-1.2: New USB device strings: Mfr=1, Product=2, SerialNumber=0

              [   65.688908] usb 1-1.2: Product: USB-Serial (Dual Channel)

              [   65.688918] usb 1-1.2: Manufacturer: Cypress Semiconductor

              [   65.754244] cdc_acm 1-1.2:1.0: ttyACM0: USB ACM device

              [   65.756377] cdc_acm 1-1.2:1.2: ttyACM1: USB ACM device

              [   65.757372] usbcore: registered new interface driver cdc_acm

              [   65.757381] cdc_acm: USB Abstract Control Model driver for USB modems and ISDN adapters

              • 4. Re: cypress dual channel serial-usb problem in raspbian
                YatheeshK_36

                Hello,

                 

                In you application the USB-Serial Device is configured to vendor SPI/I2C class (PID 00A), only the devices configured as CDC class (eg UART CDC mode) which are bound to Linux CDC ACM driver will create a node under /dev/ttyACM and you can communicate with it using applications such as minicom (similar to teraterm in windows). Refer to   Testing a USB-Serial Bridge Controller Configured as USB-UART with Linux® – KBA92551 .

                 

                Can you please let me know how you want to communicate with the device? You can use the TestUtility.c application as well.

                 

                You can install the CyUSBSerial_SDK_Linux from https://www.cypress.com/documentation/software-and-drivers/usb-serial-software-development-kit  and run the Test utility.

                Please refer to the README.txt file in the path : installation directory-> CyUSBSerial_SDK_Linux -> linux -> testUtility on how to use the testUtility.

                 

                 

                Best Regards,

                Yatheesh

                • 5. Re: cypress dual channel serial-usb problem in raspbian
                  faM_4540176

                  i just want to send i2c command to the device, for example "\x01\x52\x02". for this purpose i need to send commands to the /dev/tty* node. in default gates settings in spi and i2c mode, the tty* node is note created. the only way that the nodes create is to set the ports as UART/CDC but then minicom or screen shows nothing and sent commands not working.

                  • 6. Re: cypress dual channel serial-usb problem in raspbian
                    YatheeshK_36

                    Hello,

                     

                    Yes, the nodes are created only in CDC mode. When using vendor mode (I2C or SPI) libusb is used. As I mentioned earlier, please refer to the TestUtility.c provided with the Linux SDK CyUSBSerial_SDK_Linux for an example of host application to communicate with the I2C interface.

                     

                    Best Regards,

                    Yatheesh