--- In "wimpunk" <> wrote:
>
> Hi Group,
>
> We're still having troubles talking RS485 on our TS-SER4 board. These
> are the step we took:
> * Set the jumper on RS-485
> * Set the bit in the register (see message #7467)
> * We connected RX/TX+ (pin1) and RX/TX- (pin6) to our blackbox
> RS232/RS485 convertor.
>
> We did several tries to talk to the port (sending and receiving) but
> without anything result. Even when setting RTS on sending, there's no
> signal.
> Does anyone has any suggestion on what we could do wrong?
>
> Kind regards,
>
> wimpunk.
>
A little update: it seems like something was broken. I did the setup
again and we get "something":
* we putted diagnostic LEDs between pin1 and pin6.
* we can send from the TS to the blackbox but get garbage at the end.
* when trying to read (cat /dev/tts/3) one of the LEDs stays up. It
also happens with opening the device without sending (cat /dev/tts/3)
* We can't send from blackbox to TS
Any suggestion what we missed?
wimpunk.
PS: This is the kind of garbage we get:
(maybe it's more clear on http://wimpunk.pastebin.com/m6b0f93f5)
00004390 78 62 6c 61 63 6b 62 6f 78 3a 7e 20 65 63 68 6f
|xblackbox:~ echo|
000043a0 20 68 65 6c 6c 6f 20 3e 20 2f 64 65 76 2f 74 74 | hello >
/dev/tt|
000043b0 73 2f 33 0d 0a 72 6f 6f 74 40 70 74 78 62 6c 61
000043c0 63 6b 62 6f 78 3a 7e 20 65 63 68 6f 20 68 65 6c |ckbox:~
echo hel|
000043d0 6c 6f 20 3e 20 2f 64 65 76 2f 74 74 73 2f 33 0d |lo >
/dev/tts/3.|
000043e0 0a df df ff ff df ff ff df df ff df ff df ff ff
|................|
000043f0 ff ff ff ff df ff ff ff ff ff ff ff ff ff ff ff
|................|
00004400 df ff ff ff ff ff df df ff ff ff ff ff ff ff ff
|................|
00004410 ff ff ff ff ff df ff df ff df ff ef df ff df ff
|................|
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