Hello,
I have a Sercomm NA930-ZW-2G (I get it from orange to make home automation).
According openwrt, this device is compatible (https://openwrt.org/toh/hwdata/sercomm/sercomm_na930)
I tried to connect on it with an ethernet cable, but I get no web interface.
May someone help me and explain how to install openwrt on a such device ?
Best regards,
EdG
I have the same problem too...
Does someone has ever install openwrt firmware in this device ?
Thank's all
Thierry
Heyy,
Ports 22,80,443 are filtered so we can't expect to use ssh or web interface...
However, there is one uart port inside :
Baudrate is 57600
This is what we get from serial :
U-Boot 1.1.4 (Mar 31 2014 - 18:03:47)
Board: Ralink APSoC DRAM: 256 MB
relocate_code Pointer at: 8ffb4000
enable ephy clock...done. rf reg 29 = 5
!!! nand page size = 2048, addr len=4
..ethaddr D4:21:22:2C:E3:BA
============================================
Ralink UBoot Version: 4.0.S.4
--------------------------------------------
ASIC 7620_MP (Port5<->Phy)
DRAM_CONF_FROM: Auto-detection
DRAM_TYPE: DDR2
DRAM component: 2048 Mbits
DRAM bus: 16 bit
Total memory: 256 MBytes
Flash component: 128 MBytes NAND Flash
Date:Mar 31 2014 Time:18:03:47
============================================
icache: sets:512, ways:4, linesz:32 ,total:65536
dcache: sets:256, ways:4, linesz:32 ,total:32768
##### The CPU freq = 580 MHZ ####
estimate memory size =256 Mbytes
Atheros Phy detected EXT PHY5
RALINK 2300 DIR: ff807e
RALINK 7140 DIR: 34000020
Please choose the operation:
1: Load system code to SDRAM via TFTP.
2: Load system code then write to Flash via TFTP.
3: Boot system code via Flash (default).
4: Entr boot command line interface.
7: Load Boot Loader code then write to Flash via Serial.
9: Load Boot Loader code then write to Flash via TFTP.
0: Enter SerComm upgrade mode.
first scan: 3c5879
scan 2: 3c5879
scan 3: 3c5879
sum :3
You choosed 3
3: System Boot system code via Flash Kernel 1 partition.
## Booting image at bc640000 ...
Image Name: MIPS OpenWrt Linux-3.10.34
Image Type: MIPS Linux Kernel Image (lzma compressed)
Data Size: 1310656 Bytes = 1.2 MB
Load Address: 80000000
Entry Point: 80000000
.................... Verifying Checksum ... OK
Uncompressing Kernel Image ... OK
No initrd
## Transferring control to Linux (at address 80000000) ...
## Giving linux memsize in MB, 256
Starting kernel ...
[ 0.000000] Linux version 3.10.34 (alecs@builder1204.mios.com) (gcc version 4.6.4 (OpenWrt/Linaro GCC 4.6-2013.05 r39638) ) #16 Tue Jun 23 05:10:41 PDT 2015
[ 0.000000] Board has DDR2
[ 0.000000] Analog PMU set to hw control
[ 0.000000] Digital PMU set to hw control
[ 0.000000] SoC Type: Ralink MT7620A ver:2 eco:4
[ 0.000000] bootconsole [early0] enabled
[ 0.000000] CPU revision is: 00019650 (MIPS 24KEc)
[ 0.000000] MIPS: machine is Sercomm NA930
[ 0.000000] Determined physical RAM map:
[ 0.000000] memory: 10000000 @ 00000000 (usable)
[ 0.000000] Initrd not found or empty - disabling initrd
[ 0.000000] Zone ranges:
[ 0.000000] Normal [mem 0x00000000-0x0fffffff]
[ 0.000000] Movable zone start for each node
[ 0.000000] Early memory node ranges
[ 0.000000] node 0: [mem 0x00000000-0x0fffffff]
[ 0.000000] Primary instruction cache 64kB, VIPT, 4-way, linesize 32 bytes.
[ 0.000000] Primary data cache 32kB, 4-way, PIPT, no aliases, linesize 32 bytes
[ 0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 65024
[ 0.000000] Kernel command line: console=ttyS1,57600 rootfstype=squashfs,jffs2
[ 0.000000] PID hash table entries: 1024 (order: 0, 4096 bytes)
[ 0.000000] Dentry cache hash table entries: 32768 (order: 5, 131072 bytes)
[ 0.000000] Inode-cache hash table entries: 16384 (order: 4, 65536 bytes)
[ 0.000000] Writing ErrCtl register=0005833b
[ 0.000000] Readback ErrCtl register=0005833b
[ 0.000000] Memory: 256432k/262144k available (2396k kernel code, 5712k reserved, 597k data, 204k init, 0k highmem)
[ 0.000000] SLUB: HWalign=32, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
[ 0.000000] NR_IRQS:256
[ 0.000000] CPU Clock: 580MHz
[ 0.000000] Calibrating delay loop... 385.84 BogoMIPS (lpj=1929216)
[ 0.060000] pid_max: default: 32768 minimum: 301
[ 0.060000] Mount-cache hash table entries: 512
[ 0.070000] pinctrl core: initialized pinctrl subsystem
[ 0.080000] NET: Registered protocol family 16
[ 0.100000] bio: create slab <bio-0> at 0
[ 0.110000] rt2880_gpio 10000600.gpio: registering 24 gpios
[ 0.120000] rt2880_gpio 10000600.gpio: registering 24 irq handlers
[ 0.130000] rt2880_gpio 10000638.gpio: registering 16 gpios
[ 0.140000] rt2880_gpio 10000638.gpio: registering 16 irq handlers
[ 0.150000] rt2880_gpio 10000660.gpio: registering 32 gpios
[ 0.160000] rt2880_gpio 10000660.gpio: registering 32 irq handlers
[ 0.170000] Switching to clocksource MIPS
[ 0.180000] NET: Registered protocol family 2
[ 0.190000] TCP established hash table entries: 2048 (order: 2, 16384 bytes)
[ 0.200000] TCP bind hash table entries: 2048 (order: 1, 8192 bytes)
[ 0.210000] TCP: Hash tables configured (established 2048 bind 2048)
[ 0.230000] TCP: reno registered
[ 0.230000] UDP hash table entries: 256 (order: 0, 4096 bytes)
[ 0.240000] UDP-Lite hash table entries: 256 (order: 0, 4096 bytes)
[ 0.260000] NET: Registered protocol family 1
[ 0.270000] rt-timer 10000100.timer: maximum frequncy is 2441Hz
[ 0.290000] squashfs: version 4.0 (2009/01/31) Phillip Lougher
[ 0.310000] jffs2: version 2.2 (NAND) (SUMMARY) (LZMA) (RTIME) (CMODE_PRIORITY) (c) 2001-2006 Red Hat, Inc.
[ 0.330000] msgmni has been set to 500
[ 0.330000] io scheduler noop registered
[ 0.340000] io scheduler deadline registered (default)
[ 0.350000] gpio-export gpio_export.7: 2 gpio(s) exported
[ 0.360000] Serial: 8250/16550 driver, 2 ports, IRQ sharing disabled
[ 0.380000] 10000500.uart: ttyS0 at MMIO 0x10000500 (irq = 13) is a 16550A
[ 0.390000] 10000c00.uartlite: ttyS1 at MMIO 0x10000c00 (irq = 20) is a 16550A
[ 0.410000] console [ttyS1] enabled, bootconsole disabled
[ 0.410000] console [ttyS1] enabled, bootconsole disabled
[ 0.430000] !!! nand page size = 2048, addr len=4
[ 0.440000] mtk_nand_probe: alloc 1368, at 8f892000 , btt(8f8930c0, 100), ranfc_mtd:8f8931c0
[ 0.460000] 9 ofpart partitions found on MTD device ra_nfc
[ 0.470000] Creating 9 MTD partitions on "ra_nfc":
[ 0.480000] 0x000000000000-0x000000020000 : "u-boot"
[ 0.490000] 0x000000200000-0x000000240000 : "factory"
[ 0.500000] 0x000000208000-0x00000021ffba : "config_default"
[ 0.520000] 0x000000240000-0x000000640000 : "Config"
[ 0.530000] 0x000000640000-0x000001a40000 : "firmware"
[ 0.540000] 0x000000780000-0x000001a40000 : "rootfs"
[ 0.560000] mtd: device 5 (rootfs) set to be root filesystem
[ 0.570000] mtd: partition "rootfs_data" created automatically, ofs=0x10c0000, len=0x980000
[ 0.580000] 0x0000010c0000-0x000001a40000 : "rootfs_data"
[ 0.600000] 0x000001a40000-0x000002e40000 : "firmware2"
[ 0.610000] 0x000002e40000-0x000002f40000 : "user_storage"
[ 0.630000] 0x000002f40000-0x000003f40000 : "mios"
[ 0.640000] 0x000003f40000-0x000008000000 : "storage"
[ 0.670000] libphy: mdio: probed
[ 0.680000] ralink_soc_eth 10100000.ethernet: connected port 4 to PHY at mdio-bus:04 [uid=03a2940d, driver=Generic PHY]
[ 0.700000] ralink_soc_eth 10100000.ethernet: connected port 5 to PHY at mdio-bus:05 [uid=004dd072, driver=Atheros 8035 ethernet]
[ 0.720000] ralink_soc_eth 10100000.ethernet: loaded mt7530 driver
[ 0.740000] eth0: done loading
[ 0.740000] rt3xxx-usbphy ubsphy.3: loaded
[ 0.750000] rt2880_wdt 10000120.watchdog: Initialized
[ 0.760000] TCP: cubic registered
[ 0.770000] NET: Registered protocol family 17
[ 0.780000] 8021q: 802.1Q VLAN Support v1.8
[ 0.900000] VFS: Mounted root (squashfs filesystem) readonly on device 31:5.
[ 0.920000] Freeing unused kernel memory: 204K (802ed000 - 80320000)
procd: Console is alive
procd: - watchdog -
procd: - preinit -
Press the [f] key and hit [enter] to enter failsafe mode
Press the [1], [2], [3] or [4] key and hit [enter] to select the debug level
[ 3.720000] eth0: port 4 link up (1000Mbps/Full duplex)
[ 3.730000] usbcore: registered new interface driver usbfs
[ 3.750000] usbcore: registered new interface driver hub
[ 3.760000] usbcore: registered new device driver usb
[ 3.810000] JFS: nTxBlock = 2004, nTxLock = 16039
[ 3.930000] SGI XFS with security attributes, large block/inode numbers, no debug enabled
[ 3.970000] SCSI subsystem initialized
[ 3.980000] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[ 4.000000] ehci-platform: EHCI generic platform driver
[ 4.210000] rt3xxx-usbphy ubsphy.3: remote usb device wakeup disabled
[ 4.220000] rt3xxx-usbphy ubsphy.3: UTMI 16bit 30MHz
[ 4.230000] ehci-platform 101c0000.ehci: EHCI Host Controller
[ 4.240000] ehci-platform 101c0000.ehci: new USB bus registered, assigned bus number 1
[ 4.260000] ehci-platform 101c0000.ehci: irq 26, io mem 0x101c0000
[ 4.290000] ehci-platform 101c0000.ehci: USB 2.0 started, EHCI 1.00
[ 4.300000] hub 1-0:1.0: USB hub found
[ 4.310000] hub 1-0:1.0: 1 port detected
[ 4.320000] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
[ 4.330000] ohci-platform 101c1000.ohci: Generic Platform OHCI Controller
[ 4.340000] ohci-platform 101c1000.ohci: new USB bus registered, assigned bus number 2
[ 4.360000] ohci-platform 101c1000.ohci: irq 26, io mem 0x101c1000
[ 4.430000] hub 2-0:1.0: USB hub found
[ 4.440000] hub 2-0:1.0: 1 port detected
[ 4.450000] leds-gpio gpio-leds.6: pins are not configured from the driver
[ 4.480000] usbcore: registered new interface driver usb-storage
[ 4.630000] usb 1-1: new high-speed USB device number 2 using ehci-platform
[ 4.790000] hub 1-1:1.0: USB hub found
[ 4.800000] hub 1-1:1.0: 4 ports detected
[ 5.730000] eth0: port 5 link up (1000Mbps/Full duplex)
mount_root: jffs2 is ready
[ 6.030000] jffs2: jffs2_scan_inode_node(): CRC failed on node at 0x003677c0: Read 0xffffffff, calculated 0x61255600
[ 6.170000] jffs2: notice: (370) jffs2_build_xattr_subsystem: complete building xattr subsystem, 1 of xdatum (1 unchecked, 0 orphan) and 12 of xref (0 dead, 4 orphan) found.
procd: - early -
procd: - watchdog -
[ 6.720000] eth0: port 4 link down
[ 6.770000] eth0: port 5 link down
procd: - ubus -
procd: - init -
Failed to connect to ubus
Please press Enter to activate this console.
[ 14.490000] usb 1-1.4: new full-speed USB device number 3 using ehci-platform
[ 17.840000] usb 1-1.4: USB disconnect, device number 3
[ 19.610000] usb 1-1.4: new full-speed USB device number 4 using ehci-platform
[ 21.830000] cdc_acm 1-1.4:1.0: This device cannot do calls on its own. It is not a modem.
[ 21.850000] cdc_acm 1-1.4:1.0: ttyACM0: USB ACM device
[ 21.860000] cdc_acm 1-1.4:1.2: This device cannot do calls on its own. It is not a modem.
[ 21.880000] cdc_acm 1-1.4:1.2: ttyACM1: USB ACM device
[ 21.890000] usbcore: registered new interface driver cdc_acm
[ 21.900000] cdc_acm: USB Abstract Control Model driver for USB modems and ISDN adapters
[ 24.410000] loop: module loaded
[ 24.680000] u32 classifier
[ 24.690000] input device check on
[ 24.700000] Actions configured
[ 24.710000] Mirror/redirect action on
[ 24.730000] fuse init (API version 7.22)
[ 24.750000] Loading modules backported from Linux version master-2014-01-23-0-g62c147d
[ 24.770000] Backport generated by backports.git backports-20140124-0-g1256d3e
[ 24.820000] nf_conntrack version 0.5.0 (4009 buckets, 16036 max)
[ 24.860000] Netfilter messages via NETLINK v0.30.
[ 24.890000] usbcore: registered new interface driver ums-alauda
[ 24.910000] usbcore: registered new interface driver ums-cypress
[ 24.930000] usbcore: registered new interface driver ums-datafab
[ 24.950000] usbcore: registered new interface driver ums-freecom
[ 24.970000] usbcore: registered new interface driver ums-isd200
[ 24.990000] usbcore: registered new interface driver ums-jumpshot
[ 25.010000] usbcore: registered new interface driver ums-karma
[ 25.030000] usbcore: registered new interface driver ums-sddr09
[ 25.050000] usbcore: registered new interface driver ums-sddr55
[ 25.070000] usbcore: registered new interface driver ums-usbat
[ 25.090000] usbcore: registered new interface driver usbserial
[ 25.110000] usbcore: registered new interface driver usbserial_generic
[ 25.120000] usbserial: USB Serial support registered for generic
[ 25.300000] xt_time: kernel timezone is -0000
[ 25.310000] usbcore: registered new interface driver belkin_sa
[ 25.320000] usbserial: USB Serial support registered for Belkin / Peracom / GoHubs USB Serial Adapter
[ 25.380000] cfg80211: Calling CRDA to update world regulatory domain
[ 25.390000] usbcore: registered new interface driver cp210x
[ 25.400000] cfg80211: World regulatory domain updated:
[ 25.410000] cfg80211: DFS Master region: unset
[ 25.420000] cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp)
[ 25.440000] cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[ 25.450000] cfg80211: (2457000 KHz - 2482000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[ 25.470000] cfg80211: (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
[ 25.480000] cfg80211: (5170000 KHz - 5250000 KHz @ 80000 KHz), (300 mBi, 2000 mBm)
[ 25.500000] cfg80211: (5735000 KHz - 5835000 KHz @ 80000 KHz), (300 mBi, 2000 mBm)
[ 25.520000] cfg80211: (57240000 KHz - 63720000 KHz @ 2160000 KHz), (N/A, 0 mBm)
[ 25.540000] usbserial: USB Serial support registered for cp210x
[ 25.560000] usbcore: registered new interface driver ftdi_sio
[ 25.580000] usbserial: USB Serial support registered for FTDI USB Serial Device
[ 25.600000] ip_tables: (C) 2000-2006 Netfilter Core Team
[ 25.620000] usbcore: registered new interface driver keyspan
[ 25.630000] usbserial: USB Serial support registered for Keyspan - (without firmware)
[ 25.650000] usbserial: USB Serial support registered for Keyspan 1 port adapter
[ 25.670000] usbserial: USB Serial support registered for Keyspan 2 port adapter
[ 25.680000] usbserial: USB Serial support registered for Keyspan 4 port adapter
[ 25.730000] usbcore: registered new interface driver mct_u232
[ 25.740000] usbserial: USB Serial support registered for MCT U232
[ 25.760000] ctnetlink v0.93: registering with nfnetlink.
[ 25.770000] usbcore: registered new interface driver pl2303
[ 25.790000] usbserial: USB Serial support registered for pl2303
[ 25.800000] PPP generic driver version 2.4.2
[ 25.810000] NET: Registered protocol family 24
[ 25.840000] usbcore: registered new interface driver option
[ 25.850000] usbserial: USB Serial support registered for GSM modem (1-port)
[ 28.040000] jffs2: notice: (1740) jffs2_build_xattr_subsystem: complete building xattr subsystem, 0 of xdatum (0 unchecked, 0 orphan) and 0 of xref (0 dead, 0 orphan) found.
[ 33.280000] device eth0.1 entered promiscuous mode
[ 33.290000] device eth0 entered promiscuous mode
[ 33.300000] br-lan: port 1(eth0.1) entered forwarding state
[ 33.310000] br-lan: port 1(eth0.1) entered forwarding state
[ 33.610000] eth0: port 4 link up (1000Mbps/Full duplex)
[ 33.620000] eth0: port 5 link up (1000Mbps/Full duplex)
[ 35.310000] br-lan: port 1(eth0.1) entered forwarding state
[ 37.830000] nvram_buffer: =d4:21:22:2c:e3:ba
[ 37.840000] Assigned MAC: =d4:21:22:2c:e3:bb
[ 38.360000] 0x1300 = 00064300
[ 40.440000] device ra0 entered promiscuous mode
[ 40.450000] br-lan: port 2(ra0) entered forwarding state
[ 40.460000] br-lan: port 2(ra0) entered forwarding state
[ 42.460000] br-lan: port 2(ra0) entered forwarding state
[ 68.340000] jffs2: warning: (3147) jffs2_sum_write_data: Not enough space for summary, padsize = -764
[ 109.970000] br-lan: port 2(ra0) entered disabled state
[ 110.370000] nvram_buffer: =d4:21:22:2c:e3:ba
[ 110.380000] Assigned MAC: =d4:21:22:2c:e3:bb
[ 110.870000] 0x1300 = 00064300
[ 111.780000] br-lan: port 2(ra0) entered forwarding state
[ 111.790000] br-lan: port 2(ra0) entered forwarding state
[ 113.790000] br-lan: port 2(ra0) entered forwarding state
[ 142.470000] nf_conntrack: automatic helper assignment is deprecated and it will be removed soon. Use the iptables CT target to attach helpers instead.
But I can't write anything in the console...
Well, I found some interesting info...
from here
Subject: [PATCH 18/23] firmware-utils: add sercomm/netgear tool
This adds a tool to generate a firmware file accepted
by Netgear or sercomm devices.They use a zip-packed rootfs with header and a custom
checksum. The generated Image can be flashed via the
nmrpflash tool or the webinterface of the router.
The nmrpflash utility is here: https://github.com/jclehner/nmrpflash
Maybe worth a try?
Thanks for the tip.
Which firmware should I use :
Holding reset button while powering up turn the device in downloading mode :
U-Boot 1.1.4 (Mar 31 2014 - 18:03:47)
Board: Ralink APSoC DRAM: 256 MB
relocate_code Pointer at: 8ffb4000
enable ephy clock...done. rf reg 29 = 5
!!! nand page size = 2048, addr len=4
..ethaddr D4:21:22:2C:E3:BA
============================================
Ralink UBoot Version: 4.0.S.4
--------------------------------------------
ASIC 7620_MP (Port5<->Phy)
DRAM_CONF_FROM: Auto-detection
DRAM_TYPE: DDR2
DRAM component: 2048 Mbits
DRAM bus: 16 bit
Total memory: 256 MBytes
Flash component: 128 MBytes NAND Flash
Date:Mar 31 2014 Time:18:03:47
============================================
icache: sets:512, ways:4, linesz:32 ,total:65536
dcache: sets:256, ways:4, linesz:32 ,total:32768
##### The CPU freq = 580 MHZ ####
estimate memory size =256 Mbytes
Atheros Phy detected EXT PHY5
RALINK 2300 DIR: ff807e
RALINK 7140 DIR: 34000020
Please choose the operation:
1: Load system code to SDRAM via TFTP.
2: Load system code then write to Flash via TFTP.
3: Boot system code via Flash (default).
4: Entr boot command line interface.
7: Load Boot Loader code then write to Flash via Serial.
9: Load Boot Loader code then write to Flash via TFTP.
0: Enter SerComm upgrade mode.
first scan: 3c1079
scan 2: 3c1079
scan 3: 3c1079
sum :0
Download mode button detected
Enter SerComm download mode...
NetTxPacket = 0x8FFE5A00
KSEG1ADDR(NetTxPacket) = 0xAFFE5A00
NetLoop,call eth_halt !
NetLoop,call eth_init !
Trying Eth0 (10/100-M)
Waitting for RX_DMA_BUSY status Start... done
ETH_STATE_ACTIVE!!
NetLoop DOWNB command
first scan: 3c1079
scan 2: 3c1079
scan 3: 3c1079
sum :0
Download from server 192.168.0.100
Our IP address is 192.168.0.1
PID found
ETH MAC: d4:21:22:2c:e3:ba
Download mode ...
Got ARP REQUEST, return our IP
Personally I use snapshot on my devices, its updated more regularly but can be buggy.
Nice output from UART, it even shows IP addressing scheme--not sure if this is hard coded or DHCP configured, but either way its a good find!
Read about what snapshot means: https://openwrt.org/releases/snapshot
Be aware of:
Prebuilt snapshot images do not come with any web interface or GUI . You will need to be comfortable using a command line and remote shell to install one yourself
Hello !
I would like to thank every one for your answer and help.
I am confused because I am a hobbyist in Electronic... I am more confident on computing system like Linux.
May you tell me how you proceed to install openwrt ?
I have to open the box and plug an rs232 cable somewhere on the board ?
Then what are the settings for the serial communication ? Can i use putty ?
How to send the firmware to the box ? With winscp via FTP ? Or set a FTP server (like ftpdmin e.g.)?
My final goal is to install domoticz on the box. (maybe there is better for home automation software with openwrt ?)
Best regards,
Ed
I think it's hard coded, there isn't dhcp server
Yes, we can get some usefull info. But I can't send command to this serial port... This is what i get when I press space bar then enter key :
^C **<-- space key**
Please press Enter to activate this console.
y **<-- enter**
Putty or any serial terminal
baudrate : 57600 8N1
The only way I found is to turn the device into download mode (press reset while powering on), and then use "upgrade tool" (download here).
This tool only works with windows XP, and you have to set your IP as 192.168.0.100/24 and gateway as 192.168.0.1/24.
Under the hood, it send raw ethernet frame (0x8888)
BUT : this tool doesn't let you send openwrt firmware, because the firmware must be signed by sercomm.
This device has the same hardware as the vera edge. Don't flash other vera hardware firmware to it.
My idea was to send veraedge firmware (some firmware for other vera model are signed by sercomm), so port 80 & 22 could be open, and then find a way to flash openwrt.
I didn't find any veraedge signed firmware so far...
Another interesting finding :
Careful, RS232 would be ±25 volts - connecting a serial port from your desktop to a router would kill it instantly. While the serial console on your router uses the standard serial protocol, it does run at the SOC voltage without any voltage shifters - for most devices this means 3.3 volts (very new ARM based SOCs use 1.8 volts these days, but unless noted otherwise, you can expect 3.3 volts). For this you need a 3.3 volt based usb2serial adapter (or a voltage level shifter, like the MAX3386E, but really - don't, a 3.3 volt usb2serial adapter costs less than a fiver including shipping locally, or ~1.25 bucks on the slow boat from china); a RPi is also 3.3 volt based and could be used as well.
Did you have an idea why I can have correct RX but not TX ?
Hello,
Did you find a veraedge firmware compatible with this sercomm device ?
Best regards,
Ed
I didn't find nothing, even tried through their support but they refused