| Electronics > Projects, Designs, and Technical Stuff |
| Serial Data logger logging software with resources |
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| rvalente:
Hello Mates, I'm developing an automotive device and during road tests I need to log data, around 20 variables or so. I've been using STMStudio, great tool but not the best, also having to keep the ST-link connected creates some limitations Features I wish/need: Connection through USB-Serial (pretty standard) Data logging (I wish it is in a custom compacted format, so the logging file does not get to big over time) Graph mode (so I can easily see and scroll data) Need to integrate a USB-GPS, I believe they talk NMEA over serial, need to log my current speed and position Some scripting would be nice to Send float as long int and interpret as float: We all know using print float numbers in micros is a pain and wast of resources, also, we never get the best precision, so I wish the software could get the data as long int and convert to float. Would be great to have a simple integration using a initial header as log start: Lets say I start the logging like that: speed(lf);voltage(lf);value1(i);value2(2) So the software expects data in this order with this names, where (lf is like "long as float") What software could do this? |
| senso:
Any Bluetooth to OBD2 adapter and the Torque app on any cellphone will be way faster and cheaper to make a temporary datalogger, plus you dont need to discover how to even read what you want from the OBD bus. |
| rvalente:
--- Quote from: senso on March 27, 2020, 02:16:54 pm ---Any Bluetooth to OBD2 adapter and the Torque app on any cellphone will be way faster and cheaper to make a temporary datalogger, plus you dont need to discover how to even read what you want from the OBD bus. --- End quote --- My device is yet not OBD2 ready (and OBD2 is not fast). I need to log through serial |
| senso:
Then just make a csv file into an sd-card, using fat-fs and some sprintf its pretty easy to do so, then graph and plot all you want on a pc using excel/libre office equivalent. An STM32 as no problem print a couple floats with sprintf hundreds of times a second, I have done it using atmegas running at 8Mhz and its not a problem.. |
| rvalente:
--- Quote from: senso on March 27, 2020, 02:21:43 pm ---Then just make a csv file into an sd-card, using fat-fs and some sprintf its pretty easy to do so, then graph and plot all you want on a pc using excel/libre office equivalent. An STM32 as no problem print a couple floats with sprintf hundreds of times a second, I have done it using atmegas running at 8Mhz and its not a problem.. --- End quote --- The STMStudio already does that for me, but I need to integrate gps and scroll and analyse the data, these are long logging, to much information, that is why I'm missing a proper tool. |
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