Thingsboard custom param

OscarGutierrez

Hello, I'm doing some tests with a teltonika fmc640 unit and a flespi integration with thingsboard.
What I've found is that the Manual Can messages injected to thingsboard have different values than the ones registered in flespi platform. This is the example
Flespi --> custom.param.153 = 281479271743489000
Thinsboard http (or thingsboard translator) --> "custom.param.153\":2.81479271743488992E17
That means that the information of the less significant bits are lost. Can you double check it?

shal

OscarGutierrez please address this question via HelpBox so that we can check it on your account. But I suppose the problem is due to 54+ bit long integer. If Thingsboard or even flespi converts all numbers to double during parsing, then you are limited to 53-bit. Take a look at this article.

As a quick workaround I would suggest you to configure your value on CAN with some delimiter if possible. Or to use device plugins and divide received value by some orders of ten.

OscarGutierrez

shal

shal Thanks Shal for the info I will forward the question to helpbox, the point is that the Can message is composed by 8 bytes and in the CAN message all the bytes are used, lets say i have four wheels and I want to send the speed of each (1000 rpms echa)
CAN ID + 03 E8 03 E8 03 E8 03 E8 (03E8 = 1000 rpms) but the flespi message shows 281479271743489000.
That makes me imposible to translate into thingsboard because I can not deal with such a number.