So at the moment I have an issue in my code which is causing the Spark core to crash(Flashing red light of death). However I really do not know exactly what is causing this crash. I speculate it could be a memory leak issue but have no way of knowing. I have determined exactly which line in my co…

@IOTrav , you really need to use the search function :stuck_out_tongue: Look here: [image] Problem with function returning String I have a bit of code: String urlDecode(String input) { input.replace("%20", " "); input.replace("+", " "); input.replace("%21", "!"); input.replac…

Hi @IOTrav I am really surprised the compiler lets you write return "you got it"; since the return type is String and you are returning a pointer to a const char array in flash. Try changing it to return String("you got it"); So you explicitly call the String constructor which will copy your co…

Hi @peekay123 and @bko Sorry I way over simplified my example. I do create an actual String object in the class and then return the String so it is more like: B::doSomethingCool(){ String b = "you got it" return b } I guess my real question here is, is there a way to determine the cause of a cra…

Dont I feel like an idiot: http://docs.spark.io/troubleshooting/#troubleshoot-by-color-flashing-red

Is there a way to determine the amount of free ram in code? I saw a post on reading amount of flash available but not RAM. I need to print the amount of RAM available out the Serial port in my code for debugging purposes. Thanks

Hi @bko and @peekay123 , I have looked over my code for a few days now and I know exactly which line in the code causes the failure. However I do not know why. The line that causes the failure is a call on a method from another class from my application class. The application calls this method wh…

So a hard fault is generally caused by following a bad pointer to something and trying to do something to it. How are you using the return value in the application class? Can you show us your actual code or a boiled down but compilable test case? It is really hard to figure out from the snippets. …

Thank you @bko So here is a boiled down look. I really cant post everything because it is pretty big. Call from Application class: String serverResponse = aesClient.cbcDecrypt(response.body, response.responseLength); Method in aesClient class: String aes_client::cbcDecrypt(String message, siz…

@IOTrav , would it not be better to toss around pointers to Strings instead of Strings themselves? That would possibly take the strain off the heap. It also seems odd that your code uses char[] type strings to then convert them to String types for return. IMO, keeping everything is the string array…

[image] IOTrav: char messageArray[(sizeof oBuf - (devIDLen+18))+1]; //Make sure messageArray is empty memset(messageArray, 0, sizeof messageArray); for(int i = 0; i < sizeof messageArray; i++){ messageArray[i] = oBuf[i+18+devIDLen]; } String message(messageArray); Can you say for s…

Determining Cause of Spark Core Crash

Troubleshooting

peekay123 March 20, 2015, 2:37pm 2

@IOTrav, you really need to use the search function Look here:

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Determining Cause of Spark Core Crash

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