[ell-i-developers] Re: How to make serial working?
- From: jigsaw <jigsaw@xxxxxxxxx>
- To: "ell-i-developers@xxxxxxxxxxxxx" <ell-i-developers@xxxxxxxxxxxxx>
- Date: Sun, 1 Jun 2014 22:15:34 +0300
@Teemu I'd like use cu as well. But your solution doesn't seem to work. Do
you mean start cu first, then call stty from a 2nd shell, then cu will
receive from serial? BTW, it should be "stty -crtscts -F /dev/ttyUSB0", I
guess?
On Sun, Jun 1, 2014 at 10:03 PM, Teemu Hakala <temmi@xxxxxx> wrote:
> Damn, I totally forgot about that we mangled the rts/cts handshaking.
>
> I’m traditionally using cu for rs-232 work, setting the line parameters
> from another shell
> since the tty devices reset their parameters on fclose().
>
> (shell 1)% cu -l /dev/ttyBLAH
> /* serial line traffic goes in here */
>
> (shell 2)% stty -crtscts /dev/ttyBLAH
>
> - t
>
>
> On 1.6.2014, at 21:13, Jose Granados Vergara <jose.granados@xxxxxx> wrote:
>
> I've been using HTerm <http://www.der-hammer.info/terminal/> and Parallax
> Serial Terminal
> <http://www.parallax.com/downloads/parallax-serial-terminal> with
> Ellduino without problems.
>
> -Jose
> ------------------------------
> *De:* ell-i-developers-bounce@xxxxxxxxxxxxx [
> ell-i-developers-bounce@xxxxxxxxxxxxx] en nombre de jigsaw [
> jigsaw@xxxxxxxxx]
> *Enviado:* domingo, 01 de junio de 2014 06:59 p.m.
> *Para:* ell-i-developers@xxxxxxxxxxxxx
> *CC:* Teemu Hakala
> *Asunto:* [ell-i-developers] Re: How to make serial working?
>
> @Pekka OK this is what Ivan and I were trying to figure our during
> hackthon. We noticed that only Arduino IDE was able to talk over serial.
>
> @Jose Thanks for the sample code. I was using same code but wrong GPIO
> pin. So how do you get the serial working? By hacking Arduino IDE in the
> same way as Pekka said, or you made another customized terminal?
>
>
> On Sun, Jun 1, 2014 at 6:01 PM, Pekka Nikander <pekka.nikander@xxxxxx>
> wrote:
>
>> The current Ell-i board (Ellduino) Serial requires that you don't pull
>> DTR or RTS up(?), IIRC. They are used for reseting the board. If you use
>> a standard terminal program, that will pull the handshake signals so that
>> the board goes to the reset state.
>>
>> This is one of the things that will be fixed in the next boards.
>>
>> The issue should be documented here:
>>
>> https://github.com/Ell-i/Hackathon/wiki/Ellduino-serial-programming-interface
>> but as of today, it is not.
>>
>> Here is how we fix this for the Arduino IDE:
>>
>>
>> https://github.com/Ell-i/Arduino/commit/8748a243f22216370c478d937abc60f03697de4e
>>
>> --Pekka
>>
>>
>> On 2014–06–01, at 17:00 , Qinglai Xiao <jigsaw@xxxxxxxxx> wrote:
>>
>> > Hi Teemu,
>> >
>> > Thanks. Im working with the ell-i board, so the stm32f4 story doesn't
>> > really help.
>> > Im working at home, so I don't have logic analyser. I can manage to
>> > make serial working in a hard way by debugging it with mbed. However it
>> > could save a lot of time if someone shares the experience of ell-i +
>> > serial. 发件人: Teemu Hakala
>> > 发送时间: 2014/6/1 16:47
>> > 收件人: ell-i-developers@xxxxxxxxxxxxx
>> > 主题: [ell-i-developers] Re: How to make serial working?
>> > Hi
>> >
>> > I relayed this question to #ELL-i IRC channel on the Freenode network
>> > and was given a good link to things the software synth winner used as
>> > a starting point with the F4 Discovery:
>> >
>> > http://vedder.se/2012/07/play-mp3-on-the-stm32f4-discovery/
>> >
>> > Then there’s the usual "is everything properly connected" mantra. Are
>> > you working on it at home or with Ivan, ie. do you have access to a
>> > logic analyzer?
>> >
>> > - t
>> >
>> > On 1.6.2014, at 16:25, jigsaw <jigsaw@xxxxxxxxx> wrote:
>> >
>> >> Hi,
>> >>
>> >> I first tried to load elli/Runtime/stm32/tests/test_Serial_write_uint8
>> to ell-i, but nothing is received in minicom or screen. Then I tried to
>> manually initialize RCC and USART ( I tried both USART1 and USART2), but
>> still failed.
>> >>
>> >>
>> >> I'm now trying to port the debugger to ell-i, but without working
>> serial I can't make it.
>> >>
>> >> Could anyone give a hand? Has anyone got serial working on ell-i with
>> minicom or any other common terminal?
>> >>
>> >> thx &
>> >> rgds,
>> >> -Qinglai
>> >
>>
>
>
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