So I have a simple program on my core where I have a function that I pass a string that turns a relay on and off. Everything is working except for the small problem of the core only being stable for about 10 seconds before it stops responding. It will then go from breathing cyan to flashing cyan and…

@carter , can you share your code so we can take a look? The flashing cyan happens when you lose the cloud connection and that typically happens because the user code does not return control to the “background” task in a timely fashion (10 seconds - sound familiar :wink: ).

int switchLED(String command) { Serial.println(command); int cIndex = command.indexOf(','); if (command.substring(0, cIndex) == "on"){ Serial.println("com is on"); Serial.println(command.substring(cIndex+1)); if (command.substring(cIndex+1) == "v1"){ d…

@peekay123 , the code is ugly but I was just trying to get something working first. I wasn’t sure how to post the code. Sorry for the copy and paste dump. The function seems to work great, the core just stops responding.

[image] carter: I wasn't sure how to post the code. Sorry for the copy and paste dump. I edited the post for you. If you wrap your big block of code in ``` ... ```, it will format it so it's a little more readable.

@wgbartley , Thanks! I’ll remember that for future posts.

Hi @carter It could be a memory problem since every time you do command.substring() it creates a new String object and returns it. I am sure you will run out of memory eventually even if that is not the problem right now. Maybe you could do your string parsing in a less memory intensive way? Str…

[image] carter: It has this same behavior if i use the Tinker app as well and manually toggle the relays. I missed this part on my original pass! Can I ask how is your core powered? How do you drive the relays from the Core?

@bko I’ll definitely look at improving that. My core still behave the same way if I just use the tinker app though. Could this be related to using the cloud API to call the function?

@peekay123 Core is powered from USB port right now so I can use the serial port for debugging. I’m using one of those SainSmart 8 channel relay boards that is powered independently with a 2 amp 5v power supply.

Core unstable. Constant wifi reconnect [SOLVED]

Troubleshooting

carter May 22, 2014, 5:51pm 7

I don't know if it makes any difference but my core is the white one from the Kickstarter campaign. I tried the CC3000 firmware patch mentioned in the following post, but it seems to have made no difference.

Topic		Replies	Views
Dropping the connection to spark cloud Troubleshooting	94	13239	February 21, 2016
API to Core response time [patched] Troubleshooting	38	3534	October 13, 2014
Core does not reconnect to WiFi after flash from cloud (diode blinking green) Troubleshooting	9	1204	August 7, 2014
Did WiFi Ever Work? General	10	4130	February 10, 2014
Known issue: long delays or blocking code kills the connection to the Cloud Troubleshooting	39	11725	May 25, 2016

Core unstable. Constant wifi reconnect [SOLVED]

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