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[10:09:42] <jthornton> alex_jon1, if you get a chance the registration seems to be broken
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[10:15:47] <jthornton> it will just send you back to the registration page if you don't put something in every field
[10:35:18] <jthornton> alex_jon1, seems that the street is required even though it is not required!
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[10:48:04] <jthornton> I think I got it fixeds
[10:48:07] <jthornton> fixed
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[12:29:31] <mhaberler> whoa! Gene added a tracker entry!
[12:40:39] <skunkworks> :)
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[18:20:56] <JT-Shop> andypugh: I found an issue with the linuxcnc.org registration and fixed it I think
[18:21:09] <andypugh> I saw a test message, was that you?
[18:21:17] <andypugh> What was the issue?
[18:22:24] <JT-Shop> if you didn't put something in the address field even though it was not required it just sent you back to a blank registration screen
[18:22:31] <JT-Shop> very frustrating to some
[18:22:44] <JT-Shop> yes that was me
[18:22:47] <andypugh> Yeah. I can see that would be annoying
[18:23:06] <JT-Shop> works as expected now
[18:23:43] <andypugh> Did you block that spammer too?
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[18:52:46] <JT-Shop> dang thunderstorm...
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[20:58:28] <skunkworks> https://mail.rtai.org/pipermail/rtai/2012-September/025141.html
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[22:20:44] <andypugh> Does the rtapi_string.h function set simply not support the %f specifier in sprintf?
[22:21:51] <andypugh> I can't see how it can omit is, as all rtapi_string.h appears to do is #include <linux/string.h>
[22:23:58] <micges> yes kernel mode printf doesn't support %f
[22:24:18] <andypugh> That's annoying
[22:24:59] <micges> what do you trying to do?
[22:25:03] <andypugh> So, after a week or more on this component, I have been wasting my time?
[22:25:54] <andypugh> I am trying to format hal_float_t HAL pins into text format to display on an LCD.
[22:28:59] <andypugh> Do you also happen to know if \n is parsed into byte values, or is it handled by the display code?
[22:29:21] <andypugh> (Because \n is making it through the conversion too)
[22:29:58] <micges> \n should chage to 0xA or simmilar
[22:34:20] <andypugh> No, my format string is printing as "LinuxCNC\nX position = %f\ndYposition =" (that's the output string from sprintf, and is identical to the format string.)
[22:35:03] <alex_jon1> so you see \n on the LCD?
[22:35:14] <andypugh> I actually see a Yen symbol
[22:35:37] <andypugh> "¥n" in fact
[22:35:46] <alex_jon1> well.. I don't think it will treat it as new line
[22:35:57] <alex_jon1> I haven't seen LCD's that do that
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[22:37:14] <andypugh> I have also tried \x0d\x0a (which matches the LCD scan codes, but they come through as normal too)
[22:39:01] <andypugh> It looks like I need to re-write sprintf from scratch?
[22:39:27] <micges> I think it should be gotoxy commad
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[22:40:14] <andypugh> I am writing via a 7i73, and that inserts a "terminal emulation" interface
[22:41:25] <alex_joni> try one of the working specifiers
[22:41:29] <alex_joni> %d or so
[22:41:33] <alex_joni> does that work?
[22:41:44] <andypugh> %i works as expected
[22:42:41] <alex_joni> hmm.. I think \n doesn't get converted by sprintf
[22:42:58] <alex_joni> it's still \n in the output string, so you can lateron printf or whatnot
[22:43:20] <micges> andypugh: goto 7i73 docs, page 12
[22:43:46] <andypugh> I have that page open
[22:44:00] <andypugh> Indicates that cr/lf ought to work
[22:44:22] <andypugh> %06x works perfectly as a format specifier.
[22:44:39] <andypugh> (6 hex digits appear on the screen)
[22:44:48] <micges> but it doesn't?
[22:44:55] <andypugh> It's frustrating to be so close
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[22:45:15] <andypugh> I can't figure out how to get cr/lf into the string...
[22:46:39] <andypugh> The manpages say that \x0A\x0D ought to become the specified control characters, but they stay as that string literal
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[22:49:39] <micges> ask Peter
[22:49:47] <micges> he's on emc
[22:50:37] <andypugh> The Mesa side works. If I can get the characters into the string, then the LCD works. It is getting the characters into the string that is the problem.
[22:51:03] <micges> I know
[22:51:53] <andypugh> (if I set the HAL pin that drives the LCD to 0x1A, then the screen clears, and 0x11 turns off the cursor.
[22:52:17] <andypugh> So I don't need a Mesa guru, I need a kernel guru
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[22:52:19] <andypugh> :-)
[22:52:46] <micges> hehe
[22:53:21] <micges> so it seems that pin is controlling lcd not chars from string
[22:53:55] <micges> but probably you send data thru that pin?
[22:54:08] <andypugh> Yes. That is what my compoent does, it creates a string then sends it one char at a time to a HAL pin.
[22:54:49] <andypugh> So, loadrt lcd fmt_strings="hello %i worlds"
[22:55:03] <micges> so basically 0xA from string doesn't get to that pin?
[22:55:22] <andypugh> Will create one integer HAL pin lcd.00.page.00.arg.00
[22:55:47] <micges> (cool I'll happly test it)
[22:56:02] <andypugh> Then setting that pin to 4 will send the string "hello 4 worlds" to the lcd control pin.
[22:56:32] <andypugh> It works for ints, but not for escaped characters or string formats
[22:57:07] <andypugh> So it looks like I will need to rewrite a sprintf-like function from scratch :-(
[22:57:32] <micges> can I take a look at code?
[22:58:22] <andypugh> http://pastebin.com/s6a85jtF
[22:58:54] <andypugh> (Scruffy, has unused vars, contains debug lines)
[22:59:59] <andypugh> And, very nearly all of it is now useless.
[23:00:47] <andypugh> (there is no point splitting up into separate single-format chunks if sprintf and friends simply won't work)
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[23:05:44] <micges> should work
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[23:08:06] <andypugh> What should work?
[23:08:39] <micges> comp
[23:09:01] <micges> when you directly assing 1A it works
[23:09:14] <micges> when you assing chars from buffer it doesn't
[23:09:17] <andypugh> Well, it does to an extent, except that escaped characters and floats are not handles
[23:09:41] <alex_joni> andypugh:
http://pastebin.com/w2TYu0ZK
[23:10:01] <andypugh> Passing chars from a buffer is fine too, as long as they get into the buffer from sprintf
[23:10:33] <micges> I was looking for example of that code :)
[23:12:08] <andypugh> I guess that is the sort of thing I would need to put into my homebrew sprintf code
[23:12:52] <andypugh> I thought this would be quick and fun. It has not been quick and it has stopped being fun now I have to write my own set of C string-handling functions
[23:13:26] <andypugh> There isn't even a manpage for printk !
[23:14:07] <andypugh> So I don't even know what the kernel-mode string functions are meant to be capable of.
[23:14:25] <andypugh> Sorry. I am ranting at the wrong people.
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[23:16:45] <andypugh> Oddly, there is a printk manpage in French on the internet. That mentions the lack of float, but is silent on whether escaped characters should work.
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[23:19:07] <andypugh> So, does this seem like a sensible way to re-write the code?
[23:19:39] <andypugh> hop through the format string one char at a time. if it is not % or \ then just send it to the LCD.
[23:20:00] <micges> yes
[23:20:14] <andypugh> If it is \ then look at the next char and send control chars
[23:20:39] <micges> all printf's are basically on that algorithm
[23:21:11] <micges> and a tons of red tape
[23:21:18] <andypugh> Actually, I need to write to a buffer, as \ and % create more than one char.
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[23:21:34] <andypugh> So, if the buffer is empty, read a char.. (And so on)
[23:22:11] <andypugh> Seems manageable.
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[23:22:29] <micges> http://code.google.com/p/format/
[23:23:27] <micges> http://www.sparetimelabs.com/tinyprintf/index.html
[23:23:39] <micges> these should get you to idea
[23:23:46] <andypugh> "format" can't handle float either..
[23:27:33] <andypugh> and neither does tinyprintf. So I need to write my own anyway (especially as I probably want an erase-to-end after each \n for example)
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