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| 15:42.48 | *** topic/#cubieboard is is BUY NOW! - http://cubieboard.org - http://linux-sunxi.org/Cubieboard - logs: http://irclog.whitequark.org/cubieboard http://ibot.rikers.org/%23cubieboard/ - development wiki for chips cubieboards run on http://linux-sunxi.org/ |
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| 20:09.53 | josheph | hello everybody |
| 20:10.22 | josheph | can somebody help me with one issue? |
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| 20:31.12 | josheph | anybody is there? |
| 20:47.22 | Thhunder | hey :) |
| 20:47.49 | Thhunder | josheph, don't ask to ask just ask your question and someone will answer you ;) |
| 20:48.36 | josheph | okay, so somebody knows how can i connect my cubietruck to PC through serial port? |
| 20:49.16 | Thhunder | you need a TTL cable to do so |
| 20:50.36 | josheph | i have the cable but where is the spot in the cubietruck? |
| 20:50.54 | josheph | in uart_0 or in CN9 |
| 20:52.01 | Thhunder | that's what i can't answer right now cause i don't have a truck at the moment :/ i try a google search by the way |
| 20:52.37 | josheph | i enabled the uart 3 and 4 by software, and i have tried connecting it in several spots but it doesn't work |
| 20:54.26 | Thhunder | the ttl doesn't need an activation by software i thought it is enabled by hardware side so you have 4 output pins for it |
| 20:54.46 | Thhunder | and you only need to connect 3 (GND,rx,tx) |
| 20:55.44 | Thhunder | this one is for cubieboard1/2 http://linux-sunxi.org/Cubieboard/TTL |
| 20:55.58 | Thhunder | i'm still searching for CB3 |
| 20:56.21 | josheph | yes, i did it, but it doesn't work and i have read that port with 4 outputs is enable during/for boot |
| 20:57.30 | josheph | so i keep reading and i found this: The uart0 3 4 5 6 are available in Cubieboard1 and Cubieboard2 ,while uart0 3 4 7 are available in Cubietruck, but uart0 is debug serial. |
| 20:58.28 | josheph | in that case i think those 4 pins are only for boot but i'm not sure |
| 21:03.03 | Thhunder | hmm.. ok sry so i can't help you out with that because i don't have a truck :( sry dude |
| 21:05.16 | josheph | ok, thank you |
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| 21:06.05 | Thhunder | was just a try :) so if you don't find anything in google it's a good way to ask here but i think it is a bit sleepy here ^^ |
| 21:09.56 | pmattern | josheph: What OS are you running on your Cubietruck and what on your host (that's about to connect)? |
| 21:10.53 | josheph | i'm using Lbuntu |
| 21:10.59 | josheph | Lubuntu |
| 21:11.42 | josheph | and the host is a Laptop with Ubuntu |
| 21:12.43 | pmattern | All right. Which kernel is about to run on Cubietruck, linux-sunxi or mainline? |
| 21:13.31 | josheph | linux-sunxi |
| 21:31.47 | pmattern | --> Hardware |
| 21:31.47 | pmattern | You need a USB - serial converter, e. g. something like this http://www.exp-tech.de/usb-to-ttl-serial-cable-debug-console-cable-for-raspberry-pi. Don't worry about marketing stuff like "for Raspberry / foo / bar". What matters are connectors and an output Voltage of 3,3V (important, serial connections allow for more which can screw your device) |
| 21:31.47 | pmattern | --> plugging |
| 21:31.47 | pmattern | cable - four connectors ground (black), Rx (white), Tx (green), power (red) |
| 21:31.47 | pmattern | Cubietruck - four connectors next to USB ports, labeled the same as cable |
| 21:31.47 | pmattern | connection: ground - ground, Rx and Tx both "crossed", that is Rx cable <--> Tx Cubietruck and the other way around, DON'T USE power / red cable, this will harm your device |
| 21:31.50 | pmattern | --> Software |
| 21:31.52 | pmattern | U-Boot: make sure kernel parameters comprise console=ttyS0,115200 |
| 21:31.54 | pmattern | console: all software with pros and cons. I'm using cu from Taylor UUCP (package uucp on Debian and derivates). user must be member of group uucp |
| 21:35.29 | josheph | but let me ask you pamattern, this connection is only for boot or i can send data to PC? |
| 21:36.13 | josheph | when you refers "i'm using cu" it's cutecom? |
| 21:39.48 | pmattern | It's a serial console. That is you can watch the boot messages and end up at a login, similar to a virtual terminal on *ix or an SSH session. Sending data works theoretically, in practice it's PITA. But this actually doesn't matter: if you got the serial console running you can almost always establish a network connection and then do all the rest via SSH. |
| 21:39.48 | pmattern | No, the command is simply "cu". Just saw it's in package cu in Ubuntu, not in uccp as in Arch Linux (which I'm using). |
| 21:46.19 | josheph | but if i don't want to try with serial console, do you know if i could use the other ports of the cubietruck? |
| 21:47.37 | josheph | supposedly cubietruck has 8 ports more and maybe with them coulb be easier the connection, what do you think? |
| 21:49.47 | pmattern | So why did you start by asking "okay, so somebody knows how can i connect my cubietruck to PC through serial port?" ?!? |
| 21:49.47 | pmattern | Problem is: theoretically it should be possible to tweak an SD card, boot from it and do all the rest via "real network" connections like Ethernet or WiFi. But in practice frequently problems will arise and then you use the serial console as fallback to fix. Serial console is never meant to do actual work. |
| 21:49.47 | pmattern | "8 ports" --> ???? |
| 21:51.53 | pmattern | Of course it's also possible to just plug a monitor and a keyboard to your Cubietruck. But here the same applies as to using Ethernet / WLAN: you're not guaranteed it's working and hence the serial console is the fallback used to fix, too. |
| 22:06.45 | josheph | mm sorry for my first question, i am new in this topic and my level of english is low, so i try to explain my point of view and understand what you say |
| 22:07.19 | josheph | in this momento i'm losed X_X, let me explain you what i need with an example |
| 22:09.39 | josheph | i want to send something since my cubietruck to the PC and the PC can read and show by terminal the information that i sent and viceversa, and do it through tx, rx |
| 22:12.14 | josheph | it's similar when i did it with hyperterminal in windows |
| 22:12.29 | josheph | through max 232 |
| 22:12.55 | josheph | but now it's using the cubietruck |
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