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Help about "Low memory available, stability problem may occur"

jigwa last edited by

sketch use 75% of program storage space.
Global variables use 77% of dynamic memory
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alowhum Plugin Developer last edited by

Should be fine. It's impossible to day for certain without looking at your code to see how much ram you will be using in the main loop.

Just test it. If it works, it works. If it still works next week, it really works.
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@henk-herck - thanks for your reply and suggestions. I changed the pins to output and set them as high, but unfortunately it didn't change the outcome. In the end I soldered some wire into the OpenSprinkler's expansion board to help me get to that row of pins which allowed me to work around my issue. I'd never really looked at the Orange Pi range before and went a bit down a rabbit hole looking at them yesterday. They're quite interesting and I'll look into them a bit more today.
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Update: After few hours with AVR dragon snooping execution paths I found that after each loop() radio is woken up by code executed after each loop(). My solution is to never leave loop() by creating infinite loop inside of it, so far, after 10 h everything runs stable. 8-10 years on a single 1/2AA Lithium thionyl battery seems possible
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@BearWithBeard said in GUIDE - NRF5 / NRF51 / NRF52 for beginners: From the two ports the BMP provides, you want to use the GDB Server. If Windows only provides generic names for both ("USB Serial Device" or something), the one with the lower number should be the right choice. Strangely, my BMP uses the higher port number as the GDB server and the lower one as the serial port. I think this is unusual since it is opposite of what most guides say to expect. So, try the higher one if the lower one doesn't work.
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@hlehoux Here is a useful link how to do that: https://learn.sparkfun.com/tutorials/rfm69hcw-hookup-guide/the-antenna
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When looking in the log parser, I notice the following: At 14924, 34877, 54829, node 7 is requesting data from node 0: Received Message Sender: 7 Last Node: 7 Destination: 0 Sensor Id: 1 Command: REQ Message Type: V_VAR1 Payload Type: P_STRING Payload Length: 0 Signing: 0 Payload: This probably corresponds to this code in the node: // No count received. Try requesting it again request(CHILD_ID, V_VAR1); My guess is that the node expects this variable to be available at the controller. I don't have much experience with requesting variables so I don't have any good suggestions unfortunately. The log also shows that the FPAR requests that failed earlier work fine now: Sent Message Sender: 0 Last Node: 0 Next Node: 7 Destination: 7 Sensor Id: 255 Command: INTERNAL Message Type:I_FIND_PARENT_RESPONSE Payload Type: P_BYTE Payload Length: 1 Signing: 0 Failed uplink counter: 0 Status: OK (OK=success, NACK=no radio ACK received) Payload: 0
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Besides what Bob (?) mentioned (you seem to be making progress, breadboard unreliability, specifics), I would point out that there have been a number of discussions about ACKs, re-sending, reliability, keeping stats of NACK percentages (as a possible indicator of some problem), etc. over the years. The most recent I can recall was probably this one that I learned about when @BearWithBeard mentioned it here in my evidence based radio testing method (and capacitors) thread. My thread is more about hardware and radio testing, but we get into the subject of software ACKs etc. there in my thread a bit, and also in the linked thread. Is that the sort of stuff you are looking for?
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@skywatch said in Go to loop(); when parent/gateway can't be found.: ai tempo, potresti dare un Just insert this line: #define MY_TRANSPORT_WAIT_READY_MS 1000 before : #include <MySensors.h> this is all, so if the Gateway is not available after 1000 Milli seconds, the scketch is performed anyway

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