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inbox:toh:comfast:cf-ew72_v2 [2023/08/22 01:39] – [OpenWrt support] filimonicinbox:toh:comfast:cf-ew72_v2 [2023/08/24 10:22] – [Serial] filimonic
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 <WRAP important 60%> <WRAP important 60%>
 +{{ :media:comfast:cf-ew72-v2_label.jpg?direct&200|}}
 COMFAST CF-EW72 **without version** is completely different device.  COMFAST CF-EW72 **without version** is completely different device. 
 +
 +
 +
 Please, look for **__Model__** at the label on your device. If it says **__CF-EW72 V2__**, you should proceed with this page. Please, look for **__Model__** at the label on your device. If it says **__CF-EW72 V2__**, you should proceed with this page.
 If there is no **__V2__** you should proceed to [[toh:comfast:cf-ew72|COMFAST CF-EW72]] If there is no **__V2__** you should proceed to [[toh:comfast:cf-ew72|COMFAST CF-EW72]]
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 ===== Hardware highlights ===== ===== Hardware highlights =====
 +
 +8-O Do not be confused with [[toh:comfast:cf-ew72|COMFAST CF-EW72 (no version, aka V1)]] device. They have completely different internals. V2 version is labeled as CF-EW72 __V2__.
  
 ^ CPU                                 ^ Ram      ^ Flash   ^ Network         ^ WLAN 2.4            | WLAN 5               ^ Serial  ^ PoE      ^ PoE Passthrough  ^ ^ CPU                                 ^ Ram      ^ Flash   ^ Network         ^ WLAN 2.4            | WLAN 5               ^ Serial  ^ PoE      ^ PoE Passthrough  ^
 | Mediatek MT7621(AT or DAT) 880 MHz  | 128 MiB  | 16 MiB  | 2x 10/100/1000  | b/g/n\\ (300 Mbps)  | a/n/ac\\ (867 Mbps)  | Yes     | 802.3af  | No               | | Mediatek MT7621(AT or DAT) 880 MHz  | 128 MiB  | 16 MiB  | 2x 10/100/1000  | b/g/n\\ (300 Mbps)  | a/n/ac\\ (867 Mbps)  | Yes     | 802.3af  | No               |
- 
-**Power:** Device is powered only through __PoE 802.3af__ ("active PoE") and bundled with 220v __PoE injector__.  
-:!: There is no information if device can be powered with PoE. 
-:!: There is **No PoE Passthrough**: please note that device does not provide power to daisy-chained device. 
- 
-COMFAST CF-EW72 V2 is known to be produced in two variants (**not versions**): 
-  * COMFAST CF-EW72 __V2__ with MT7621AT and separate DDR RAM chip onboard. 
-  * COMFAST CF-EW72 __V2__ with MT7621DAT with integrated RAM and no DDR RAM soldered chip onboard. 
-PCBs for both __V2__ variants are same. 
- 
-8-O Do not be confused with [[toh:comfast:cf-ew72|COMFAST CF-EW72 (no version, aka V1)]] device. They have completely different internals. V2 version is labeled as CF-EW72 __V2__. 
- 
-COMFAST CF-EW72 __V2__ known to be sold both in unpainted cardboard box and colorful glossy cardboard box. 
-I guess, but not guarantee that colorful box is for new variant equipped with MT7621DAT SoC and no RAM chip. 
- 
- 
- 
  
 ===== Installation ===== ===== Installation =====
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 ==== Installing OpenWrt ==== ==== Installing OpenWrt ====
 +
 +You will need 2 ethernet cables for this.
  
   - → Connect bundled __PoE Injector__ to electricity.   - → Connect bundled __PoE Injector__ to electricity.
-  - → Connect your PC to the __LAN__ port of bundled __PoE injector__.+  - → Connect your PC to the __LAN__ port of bundled __PoE injector__ with first ethernet cable.
   - → Configure static IP on your computer's ethernet adapter   - → Configure static IP on your computer's ethernet adapter
     * IP   : <wrap hi>192.168.1.x</wrap> (<wrap hi>x</wrap> is <wrap hi>2</wrap> to <wrap hi>254</wrap>)     * IP   : <wrap hi>192.168.1.x</wrap> (<wrap hi>x</wrap> is <wrap hi>2</wrap> to <wrap hi>254</wrap>)
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     * Gateway : //empty//     * Gateway : //empty//
     * DNS : //empty//     * DNS : //empty//
-  - → Plug ethernet cable to the __PoE__ port of bundled __PoE injector__. +  - → Plug second ethernet cable to the __PoE__ port of bundled __PoE injector__. 
-  - → Press and hold pressed  __**⚫reset**__ button on **COMFAST CF-EW72 V2** (reset button is between LAN and WAN ports) and plug ethernet cable from bundled injector's __PoE__ port to __LAN__ port of **COMFAST CF-EW72 V2**.+  - → Press and hold pressed  __**⚫reset**__ button on **COMFAST CF-EW72 V2** (reset button is between LAN and WAN ports) and plug second ethernet cable from bundled injector's __PoE__ port to __LAN__ port of **COMFAST CF-EW72 V2**.
   - → <color #00a2e8>🔵POWER</color> and <color #00a2e8>🔵LAN</color> LEDs will turn on, <color #00a2e8>🔵Wi-Fi</color> LED will blink 10 times in 10 seconds, then for 1 second it will blink rapidly, then it will stay on.   - → <color #00a2e8>🔵POWER</color> and <color #00a2e8>🔵LAN</color> LEDs will turn on, <color #00a2e8>🔵Wi-Fi</color> LED will blink 10 times in 10 seconds, then for 1 second it will blink rapidly, then it will stay on.
   - → Release the **⚫reset** button.   - → Release the **⚫reset** button.
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 The only both visible and customizable led is Wi-Fi led. The only both visible and customizable led is Wi-Fi led.
  
-Led#1(POWER), Led#3(WAN), Led#5(LAN) can not be controlled programmatically.+Led #  ^ Indicator role   ^ GPIO  ^ Name in LuCI           ^ Note                                                    ^ 
 +|      | 🔵POWER            N\A | N\A                    | Always on when device is powered. Can not be controlled programmatically.                                   | 
 +|  2     | 🔷Not visible    |  13   | **blue:hidden_led_2**  | This led has no hole in shell. Controllable with GPIO.                                                      | 
 +|      | 🔵WAN              N\A | N\A                    | Indicates WAN activity. Can not be controlled programmatically.                                             | 
 +|  4     | 🔷Not visible    |  16   | **blue:hidden_led_4**  | This led has no hole in shell. Controllable with GPIO.                                                      | 
 +|      | 🔵LAN              N\A | N\A                    | Indicates LAN activity. Can not be controlled programmatically.                                             | 
 +|  6     | ⬛Not visible    |   N\A | N\A                    | This led has no hole in shell. __Can not__ be controlled programmatically.                                  | 
 +|  7     | 🔵WLAN            15   | **blue:wlan**          | Indicates Wi-Fi activity. Can be controlled programmatically. By default, not bound to any wireless adapter | 
 +|  8     | ⬛Not visible    |   N\A | N\A                    | This led has no hole in shell. __Can not__ be controlled programmatically.                                  | 
 +===== Hardware ===== 
 +==== Info ==== 
 +^ Architecture     | MIPS                                     | 
 +^ Vendor           | Ralink                                   | 
 +^ Bootloader       | U-Boot                                   | 
 +^ System-On-Chip   | MT7621                                   | 
 +^ CPU/Speed        | 880 MHz                                  | 
 +^ Flash-Chip       | 25L12833F                                | 
 +^ Flash size       | 16 MiB                                   | 
 +^ RAM              | 128 MiB                                  | 
 +^ Wireless         | MT7603 2.4GHz 802.11bgn\\ MT7663BEN 5GHz 802.11ac| 
 +^ Ethernet         | 2 x 10/100/1000 Mbit/s w/ vlan support   | 
 +^ Switch           | MT7530 (MT7621 built-in)                 | 
 +^ USB              | None                                     | 
 +^ Serial           | [[#Serial|Yes]]                          | 
 +^ JTAG             | Not populated                            | 
 + 
  
-Led#6 and Led#8 can not be controlled and always off.+===== Power =====
  
-Led#2 and Led#4 can be controlled with GPIO, but not visible as shell does not have holes for them.+Device is powered only through __PoE 802.3af__ ("active PoE"and bundled with 220v __PoE injector__
  
-Led#7 is Wi-Fi led. By default it is not mapped to indicate wireless activity.+:!: There is no information if device can be powered with "Passive PoE".
  
-^ Led #  ^ Indicator role  ^ GPIO  ^ Name in LuCI           ^ +:!There is **no PoE Passthrough**: please note that device does not provide power to daisy-chained device.
-|  1     | 🔵POWER          |   N\A | N\A                    | +
-|  2     | ⚪Not visible    |  13   | **blue:hidden_led_2** +
-|  3     | 🔵WAN            |   N\A | N\A                    | +
-|  4     | ⚪Not visible    |  16   | **blue:hidden_led_4**  | +
-|  5     | 🔵LAN            |   N\A | N\A                    | +
-|  6     | ⚪Not visible    |   N\A | N\A                    | +
-|  7     | 🔵WLAN            15   **blue:wlan**          | +
-|  8     | ⚪Not visible    |   N\A | N\A                    | +
-===== Hardware ===== +
-==== Info ==== +
-^ Architecture     | EXAMPLE MIPS                             | +
-^ Vendor           | EXAMPLE Ralink                           | +
-^ Bootloader       | EXAMPLE U-Boot                           | +
-^ System-On-Chip   | EXAMPLE Ralink RT3052 - MIPS 24K V4.12   | +
-^ CPU/Speed        | EXAMPLE 451 MHz                          | +
-^ Flash-Chip       | EXAMPLE unkown                           | +
-^ Flash size       | EXAMPLE 8 MiB                            | +
-^ RAM              | EXAMPLE 64 MiB                           | +
-^ Wireless         | EXAMPLE RT2860v2 2.4GHz 802.11bgn        | +
-^ Ethernet         | EXAMPLE 10/100 Mbit/s w/ vlan support    | +
-^ Switch           | EXAMPLE Qualcomm Atheros QCA8337         | +
-^ USB              | EXAMPLE 1x 2.0                           | +
-^ Serial           | EXAMPLE [[#Serial|Yes]]                  | +
-^ JTAG             | EXAMPLE [[#JTAG|Not populated]]          |+
  
 +===== MT7621AT or MT7621DAT =====
 +
 +For end user, there is no difference.
 +
 +COMFAST CF-EW72 V2 is known to be produced in two variants (**not versions**):
 +  * COMFAST CF-EW72 V2 with MT7621AT and separate DDR RAM chip onboard.
 +  * COMFAST CF-EW72 V2 with MT7621DAT with integrated RAM and no DDR RAM soldered chip onboard.
 +PCBs for both variants seem to be same. Firmware works for both.
 +
 +COMFAST CF-EW72 V2 known to be sold both in unpainted cardboard box and colorful glossy cardboard box.
 +I guess, but not guarantee that colorful box is for new variant equipped with MT7621DAT SoC and no RAM chip.
 +Seems that devices also have different factory labels.
  
 /*** if info available: uncomment and fill in /*** if info available: uncomment and fill in
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 /* Thanks, your wiki administration - Oct. 2015 */ /* Thanks, your wiki administration - Oct. 2015 */
  
-**Insert photo of front of the casing**+**Photo of casing**
  
-**Insert photo of back of the casing**+^ Front ^ Back ^ Opened Lid ^ 
 +| {{:media:comfast:cf-ew72-v2_casing_front.jpg?direct&200}} | {{:media:comfast:cf-ew72-v2_casing_back.jpg?direct&200}} | {{:media:comfast:cf-ew72-v2_casing_no_lid.jpg?direct&200}} | 
 + 
 +**Photo of backside label** 
 +^ Variant for MT7621AT                                      ^ Variant for MT7621<color #ed1c24>D</color>AT              ^ 
 +| {{ :media:comfast:cf-ew72-v2_label_v2.1.jpg?200&direct}}  | {{ :media:comfast:cf-ew72-v2_label_v2.2.jpg?200&direct}} 
 + 
 +**Photo of PCB** 
 + 
 +Click to enlarge 
 + 
 +^ Side A ^ Side B ^ 
 +| {{:media:comfast:cf-ew72-v2_pcb-front.jpg?direct&200}} | {{:media:comfast:cf-ew72-v2_pcb-back.jpg?direct&135}} |
  
-**Insert photo of backside label** 
  
-**Insert photo of PCB** 
  
 ==== Opening the case ==== ==== Opening the case ====
  
-<WRAP BOX> +=== Tools needed === 
-FIXME //Describe what needs to be done to open the device, e.g. remove rubber feet, adhesive labels, screws, ...// + 
-</WRAP>+  * Hot air gun (to gently remove factory sticker)  
 +  * Needle nose pilers 
 +  * PH0 screwdriver 
 +  * Сontainer for small items (zip bag) 
 + 
 +=== Opening the case in steps ===
  
 +^ Step ^ Text ^ Image ^
 +| 1 | Open the case and disconnect cables. | Click image\\ to enlarge |
 +| 2 | Use hot air to heat the factory label and peel it off.\\ If you wish, glue it to the back of the case, closer to the antennas. | {{:media:comfast:cf-ew72-v2_disassembly_10_remove_sticker.jpg?direct&100}} |
 +| 3 | Remove 2 screws hidden under the factory label. | {{:media:comfast:cf-ew72-v2_disassembly_20_remove_screws.jpg?direct&100}} |
 +| 4 | Unscrew antennas.\\ Remove big rubber rings.\\ Unscrew the nuts from the Wi-Fi antenna connectors using thin-nosed pliers.\\ Do not remove washer and o-ring hidden under washer yet. | {{:media:comfast:cf-ew72-v2_disassembly_30_remove_antennas_and_nuts.jpg?direct&100}} |
 +| 5 | Grasp the sides of the device and gently push the antenna connectors into the device.\\ Be careful with the center pin of the connector.\\ After the antenna connectors are completely inside the device, pull on the plastic insert with RJ45 connectors. | {{:media:comfast:cf-ew72-v2_disassembly_40_push_pcb_out.jpg?direct&100}} |
 +| 6 | Remove 2 washers and 4 o-rings in total.\\ There are 2 washers and 2 small o-rings on the outside of the case.\\ :!: There are two more small o-rings on Wi-Fi antenna connectors from the inside of the case.\\ They may be on antenna connectors or stick to casing from inside. Remove them.\\ | |
 +| 7 | Put into a zip bag:\\ ☑️ 1 factory label (if removed)\\ ☑️ 2 screws\\ ☑️ 2 big rubber rings\\ ☑️ 2 nuts\\ ☑️ 2 washers\\ ☑️ 4 small o-rings | |
 +| 8 | Put a zip bag inside an empty casing and close with a casing lid. | |
 +| 9 | Screw antennas to Wi-Fi connectors on PCB. | |
 ==== Serial ==== ==== Serial ====
 +{{ :media:comfast:cf-ew72-v2_pcb-serial.jpg?200|}}
 -> [[docs:techref:hardware:port.serial]] general information about the serial port, serial port cable, etc. -> [[docs:techref:hardware:port.serial]] general information about the serial port, serial port cable, etc.
  
 How to connect to the Serial Port of this specific device:\\ How to connect to the Serial Port of this specific device:\\
-Device has factory-soldered 2.54mm pin header. 
  
-It is recommended NOT connect VCC pin as device powers from PoE. +  * [[#Opening the case|Remove the case]].\\ 
-GND pin is recommended to be connected. +  * Device has factory-soldered 4 x 2.54mm pin header (VCC, GND, TX, RX).\\ 
-In some situations device may not start when RX pin is connected - so, connect it right after you see output from device.+  * GND pin is recommended to be connected. \\ 
 +  * :!: It is recommended NOT connect VCC pin as device powers from PoE.\\ 
 +  * :!: It is recommended to connect serial adapter through active (with separate power) USB hub. Avoid connecting to usb port connected to computer motherboard. CF-EW72 V2 has 48V on PCB, and if 48V will somehow hit your USB, it may damage your PC, including CPU
 +  In some situations device may not start when RX pin is connected - so, connect it right after you see output from device
 +  * Connected RX also may cause random 5GHz Wi-Fi chip problems.
  
 ^ Serial connection parameters\\ for COMFAST CF-EW72 V2 | 115200, 8N1, 3.3V | ^ Serial connection parameters\\ for COMFAST CF-EW72 V2 | 115200, 8N1, 3.3V |
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 ===== Tags ===== ===== Tags =====
-[[meta:tags|How to add tags]] +{{tag>unsupported}}
-{{tag>EXAMPLETAG unsupported}}+
  • Last modified: 2023/09/27 06:50
  • by filimonic