I wonder if your code used an interrupt that couldn't handle the 25 ms time period. ~Carl
On Tue, Jan 26, 2021 at 11:10 AM John Vaughters via TriEmbed < [email protected]> wrote: > Pete, > > There is a debug port on the board for sure, not sure if it qualifies as > JTAG. I've never actually used a debugger on a micro-processor, only on > regular desktop/server programming. I never invested the time or money to > get that up to speed. I will say it dumps a bunch of hex code to the serial > port when it crashes and I did not really look at that either. The reason > being that I never ran into a limitation that prevented my pragmatic > application results and I'm more interested in the end result than the > finer details. I just hack until I get it to work. Same goes for > oscilloscopes and electronics, I just use basic concepts and practices and > usually get it to work. However, I definitely want to gear up with > oscilloscopes and logic analyzers one day. But until I have the time to > play, no need in putting out the dough for it to sit on the shelf. This > attitude is from experience of too many things sitting on the shelf. > > There are two timers on the board, but one is used for wifi. The other one > is available, and I might be able to use that with better results, but the > Ticker library does magic in the background and appears to act like a > simple task scheduler. So in the code it appears you are setting tasks, but > behind the scenes I have not investigated what it is actually doing. For > sure if you use the single timer you are limited to one task or a tight > management of tasks on that timer. I'm not quite sure because I did not go > that route, I am just parroting my perception of what I read. So I opted > for the code appearance of tasking through the Ticker library to make my > code more readable. It seems to work great so far and I am close to being > done with my wifi modbus device. The next application will be a very simple > wifi serial to tcp converter to be able to use with micro-processors that > have no network connections. This will allow modbus over TCP via serial > conversion. You get the sense I like modbus? `,~) What I found so far is > that the serial to tcp application is already solved and out there in > multiple forms, so I just need to pick one and give it a go. > > I never really exposed my end applications; it is for my home SCADA system > that monitors energy use for the goal of reducing energy while remaining > comfortable. Basically, I am trying to use technology to "Stick it to the > Man" `,~) Oh and have fun learning along the way. I'm pretty sure on just > the electric controls implemented on the hot water heater alone I have > saved enough to pay for my electronics. So anything above that is pay dirt. > > For Robotics, I am really liking the ESP32 combined with some nano > arduinos as specialized processors. Top priority being a weed eater head > remote controlled lawnmower to minimize allergen exposure. And for the > record that has been on the task list for years and I wouldn't be surprised > if it waits years longer, but hey the technology keeps making the idea > easier as time flies by. > > Dreams are good, jobs are better! `,~) > > Bottom line is I am loving the ESP line of products. > > John Vaughters > > > > > > > On Tuesday, January 26, 2021, 10:20:04 AM EST, Pete Soper via TriEmbed < > [email protected]> wrote: > > > > > > Does ESP-12E support JTAG debugging? It might be interesting to figure > out what the crash is about (maybe there isn't actually a task scheduler > present and if you don't "yield" back you've violated the API > contract?). But you've stuck with the pragmatic approach, John. Thanks > for the tip. > > Getting SparkFun "Micromod" boards with ESP32 and ESP8266 (no idea what > flavors) and the "All the Pins" carrier board today. But these go on the > shelf as I wait for the RP2040 Micromod board, and my stack is pushed > anyway. Particle Land, here I come. :-) > > -Pete > > On 1/26/21 10:03 AM, John Vaughters via TriEmbed wrote: > > In my playing around with the ESP-12e's that I have, I found something > that may save someone some time. Using the Ticker library to schedule a > task, I quickly found out that the task better be quick or it will crash > the program. To define quick, my task was maybe 25ms, which was enough to > crash the program. To get around this I found on the web a quick tip that > made alot of sense. Just use the Ticker task to flip a bool and then have > an if statement run the task and reset the bool. > > > > It's not what I consider a great programming technique, but I consider > it a valid workaround on the limitation. And it still beats running the > task on every loop cycle. > > > > I am certainly open to other suggestions, but it works quite well and I > will be sticking with it for now. > > > > John Vaughters > > > > > _______________________________________________ > > Triangle, NC Embedded Computing mailing list > > > > To post message: [email protected] > > List info: > http://mail.triembed.org/mailman/listinfo/triembed_triembed.org > > TriEmbed web site: http://TriEmbed.org > > To unsubscribe, click link and send a blank message: mailto: > [email protected]?subject=unsubscribe > > > > _______________________________________________ > Triangle, NC Embedded Computing mailing list > > To post message: [email protected] > List info: http://mail.triembed.org/mailman/listinfo/triembed_triembed.org > TriEmbed web site: http://TriEmbed.org > To unsubscribe, click link and send a blank message: mailto: > [email protected]?subject=unsubscribe > > > > _______________________________________________ > Triangle, NC Embedded Computing mailing list > > To post message: [email protected] > List info: http://mail.triembed.org/mailman/listinfo/triembed_triembed.org > TriEmbed web site: http://TriEmbed.org > To unsubscribe, click link and send a blank message: mailto: > [email protected]?subject=unsubscribe > > -- ------------------------------------------------------------------------------- Carl J. Nobile (Software Engineer) [email protected] -------------------------------------------------------------------------------
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