Andy S
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Arduino MEGA boolean?

Started this discussion. Last reply by keith vasilakes Oct 29, 2014. 1 Reply

Hi everyone,been banging my head against the wall a few days now.i have a small project, where i use softtimers library, and the issue i have is this:there are a few tasks defined, a few variables,…Continue

String to char*

Started this discussion. Last reply by Jonathan Dean Dec 19, 2012. 2 Replies

Sorry for the stupid question, but i'm just looking for another set of eyes, perhaps someone can tell me how can i get this going...String mystring="";void setup(){Serial.begin(9600);}void…Continue

 

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keith vasilakes replied to Andy S's discussion Arduino MEGA boolean?
"sounds like an uninitialized variable when used in your task, what ever that is"
Oct 29, 2014
Andy S posted a discussion

Arduino MEGA boolean?

Hi everyone,been banging my head against the wall a few days now.i have a small project, where i use softtimers library, and the issue i have is this:there are a few tasks defined, a few variables, some of them boolean type.boolean runn=false;the symptoms are:1. when one routine executes inside a "void setup", i do a Serial.print(runn), i get 0 printed on the laptop com port - that is as expected.2. when i get the routine executed inside the task, and i do a Serial.print(runn), i get 13 printed…See More
Apr 16, 2014
Jonathan Dean replied to Andy S's discussion String to char*
"I keep reading in the Arduino reference that you can use "Constant String" + analogRead(), myString += 123, and similar constructions, but whenever I do I get random-length garbage.  Using the String constructor to concatenate a…"
Dec 19, 2012
Jonathan Dean replied to Andy S's discussion String to char*
"First, if you try to append a non-string value to a string it'll get weird.  Instead of Char arrays don't offer all the flexibility that a String object does, and they're sometimes kind of hard to work with, but they're a…"
Dec 19, 2012
Andy S posted a discussion

String to char*

Sorry for the stupid question, but i'm just looking for another set of eyes, perhaps someone can tell me how can i get this going...String mystring="";void setup(){Serial.begin(9600);}void loop(){mystring="The ADC value is: " + analogRead(A15);Serial.println(mystring);sendlog(mystring);delay(10000);}void sendlog(const char* message){//do whatever to send this to logging SD...}while compiling, i get the following: error: cannot convert 'String' to 'const char*' for argument '1' to 'void…See More
Dec 16, 2012
Andy S replied to chris M's discussion GSM - SIM900 Dropping Connection
"Micky, This is interesting topic. Coincidentally i was researching and playing with the same thing as well a few months ago, but could not find a solution for this... my issue was as follows: SIM900 arduino shield was connected to MEGA…"
Dec 11, 2012
Andy S is now a member of GarageLab (arduino, electronics, robotics, hacking)
Dec 11, 2012

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