Comments on: Streaming http://arduiniana.org Arduino wisdom and gems by Mikal Hart Thu, 02 Feb 2012 11:22:38 +0000 http://wordpress.org/?v=2.9.2 hourly 1 By: Shibu http://arduiniana.org/libraries/streaming/comment-page-1/#comment-25216 Shibu Sun, 29 Jan 2012 13:14:15 +0000 http://sundial.org/arduino/?page_id=119#comment-25216 Hi Mikal, Maple is derived from Arduino-18. But probably they have removed the variable 'Arduino'. I added "#define ARDUINO 18" to the top of my code and it works fine. Thanks for the lead. PS: I wrote a library for reading from Sensirion temperature and humidity sensor SHT-15 which work OK (on Maple). But when I try it with streaming library, thing become flakey. Some sketches compile while others don't. Error messages are not at all helpful. The error messages are popping-up at linking stage - not compile stage. I don't know if you can help me on this Regards, Shibu Hi Mikal,

Maple is derived from Arduino-18. But probably they have removed the variable ‘Arduino’.
I added “#define ARDUINO 18″ to the top of my code and it works fine.

Thanks for the lead.

PS: I wrote a library for reading from Sensirion temperature and humidity sensor SHT-15 which work OK (on Maple). But when I try it with streaming library, thing become flakey. Some sketches compile while others don’t. Error messages are not at all helpful. The error messages are popping-up at linking stage – not compile stage. I don’t know if you can help me on this

Regards,

Shibu

]]> By: Norm http://arduiniana.org/libraries/streaming/comment-page-1/#comment-25205 Norm Sun, 29 Jan 2012 09:31:49 +0000 http://sundial.org/arduino/?page_id=119#comment-25205 I'm not finding documentation on _FLOAT() although it seems to work. Is there a way to add leading zeros? Better yet, can you point me to docs? I’m not finding documentation on _FLOAT() although it seems to work. Is there a way to add leading zeros? Better yet, can you point me to docs?

]]> By: Mikal http://arduiniana.org/libraries/streaming/comment-page-1/#comment-25197 Mikal Sun, 29 Jan 2012 06:49:02 +0000 http://sundial.org/arduino/?page_id=119#comment-25197 Hi Norm, Sorry it's not clear. You'd probably just do something like: <code>Serial << _FLOAT(1.2345, 3) << endl;</code> Hi Norm,

Sorry it’s not clear. You’d probably just do something like:

Serial << _FLOAT(1.2345, 3) << endl;

]]> By: Mikal http://arduiniana.org/libraries/streaming/comment-page-1/#comment-25195 Mikal Sun, 29 Jan 2012 06:43:40 +0000 http://sundial.org/arduino/?page_id=119#comment-25195 @Shibu, I think the problem mus be that the Maple version was derived from an older version of Arduino software -- one that didn't support the capability to specify the floating precision. The code in question is wrapped in #if ARDUINO >= 18 so I think Maple must be less than version 18? @Shibu,

I think the problem mus be that the Maple version was derived from an older version of Arduino software — one that didn’t support the capability to specify the floating precision. The code in question is wrapped in

#if ARDUINO >= 18

so I think Maple must be less than version 18?

]]> By: Mikal http://arduiniana.org/libraries/streaming/comment-page-1/#comment-25192 Mikal Sun, 29 Jan 2012 06:38:53 +0000 http://sundial.org/arduino/?page_id=119#comment-25192 @Ralf, Yep, the new Streaming library should work with that syntax. @Ralf,

Yep, the new Streaming library should work with that syntax.

]]> By: Mikal http://arduiniana.org/libraries/streaming/comment-page-1/#comment-25181 Mikal Sun, 29 Jan 2012 06:03:32 +0000 http://sundial.org/arduino/?page_id=119#comment-25181 Yep, Streaming now works in Arduino 1.0. M Yep, Streaming now works in Arduino 1.0.

M

]]> By: Norm http://arduiniana.org/libraries/streaming/comment-page-1/#comment-25161 Norm Sun, 29 Jan 2012 03:59:14 +0000 http://sundial.org/arduino/?page_id=119#comment-25161 Can you furnish a few examples of formatting output? I had to resort to "client.print(x,2);" In order to get a formatted float. Can you furnish a few examples of formatting output? I had to resort to
“client.print(x,2);” In order to get a formatted float.

]]> By: Shibu http://arduiniana.org/libraries/streaming/comment-page-1/#comment-25045 Shibu Fri, 27 Jan 2012 16:28:53 +0000 http://sundial.org/arduino/?page_id=119#comment-25045 Hi, Mikal, Thanks for the lib. I tried the Streaming library on Maple (http://leaflabs.com/) and it worked straight away. I faced only one problem. When I tried _FLOAT, it spits out error '_FLOAT was not declared in this scope. For the time being, I can live with the default precision of two decimal places for floats. However in future, I may want to adjust the precision. Is there a way out? TIA Shibu Hi, Mikal,
Thanks for the lib.
I tried the Streaming library on Maple (http://leaflabs.com/) and it worked straight away.

I faced only one problem. When I tried _FLOAT, it spits out error ‘_FLOAT was not declared in this scope.
For the time being, I can live with the default precision of two decimal places for floats. However in future, I may want to adjust the precision. Is there a way out?

TIA

Shibu

]]> By: Ralf Kramer http://arduiniana.org/libraries/streaming/comment-page-1/#comment-24226 Ralf Kramer Thu, 12 Jan 2012 17:18:43 +0000 http://sundial.org/arduino/?page_id=119#comment-24226 With the new Arduino 1.0, it is possible to use Serial.print(F("Test")); // stored in flash How can I use it with the streaming.h ? Serial << F("Test"); doesn't work! Ralf Kramer With the new Arduino 1.0, it is possible to use

Serial.print(F(“Test”)); // stored in flash

How can I use it with the streaming.h ?

Serial << F("Test");

doesn't work!

Ralf Kramer

]]> By: Randall W http://arduiniana.org/libraries/streaming/comment-page-1/#comment-23779 Randall W Wed, 04 Jan 2012 07:38:55 +0000 http://sundial.org/arduino/?page_id=119#comment-23779 Or you could just use sprintf(), since the Arduino language is just C, and have all the joy of easy formatted printing. To paraphrase the example above: // This does work in Arduino. Hooray! char msg[128]; sprintf(msg,"The button was pressed %d times",counter); lcd.print(msg); Even better, by using sprintf() you can control the width of fields etc. All formatted printing problems can be solved easily using the standard C libraries. Or you could just use sprintf(), since the Arduino language is just C, and have all the joy of easy formatted printing. To paraphrase the example above:
// This does work in Arduino. Hooray!
char msg[128];
sprintf(msg,”The button was pressed %d times”,counter);
lcd.print(msg);

Even better, by using sprintf() you can control the width of fields etc. All formatted printing problems can be solved easily using the standard C libraries.

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