CHARACTERISTIC can not be used

[autoxgw]

Hi Daniel,
I found a2l abstracted from elf file by this tool can not be used by INCA or CANape, in the abstracted a2l, the keyword is "MEASUREMENT" rather than "CHARACTERISTIC". the proper format can be used in INCA like this:
/begin CHARACTERISTIC B_THeat_P
"None"
VAL_BLK
0xA02D5D9C
Scalar_FLOAT32_IEEE
0
BTHM_CM_single__
-3.4E+38 3.4E+38
ECU_ADDRESS_EXTENSION 0
EXTENDED_LIMITS -3.4E+38 3.4E+38
NUMBER 3
/end CHARACTERISTIC
on the other hand, the format of the generated multi-demensional CHARACTERISTIC is not quite right.
for example, the proper format can be used in INCA like this:
/begin CHARACTERISTIC A_IChLim_M
"25"
CURVE
0xA02D4A50
Lookup1D_FLOAT32_IEEE
0
BCC_CM_single__
-3.4E+38 3.4E+38
ECU_ADDRESS_EXTENSION 0
EXTENDED_LIMITS -3.4E+38 3.4E+38
/begin AXIS_DESCR
COM_AXIS
NO_INPUT_QUANTITY
BCC_CM_single__
23
-3.4E+38 3.4E+38
AXIS_PTS_REF B_UChLim_A
EXTENDED_LIMITS -3.4E+38 3.4E+38
/end AXIS_DESCR
/end CHARACTERISTIC

	/begin AXIS_PTS B_UChLim_A
		"V25"
		0xA02D3F1C
		NO_INPUT_QUANTITY
		Lookup1D_X_FLOAT32_IEEE
		0
		BCC_CM_single__
		23
		-3.4E+38 3.4E+38
		ECU_ADDRESS_EXTENSION 0
		EXTENDED_LIMITS -3.4E+38 3.4E+38
	/end AXIS_PTS

can you fix this bug in the future version, thanks!

[DanielT]

I have no idea what you're trying to do here? What commands are you running?

[DanielT]

sorry, bad click. I'm not closing it, but I do need details.

[autoxgw]

Hi Daniel,
I try to merge all a2l generated by simulink first, and update it by elf file, and I find MEASUREMENT in the updated a2l works well, but CHARACTERISTIC cannot work properly. so I try to merge all a2l files first, and delete all CHARACTERISTIC, get a.a2l, after that I update the merged a2l by elf file to get b.a2l, the I generate CHARACTERISTIC by elf file and I get c.a2l, finally I merged b.a2l and c.a2l, get d.a2l. I found c.a2l and d.a2l cannot work properly(CHARACTERISTIC ). MEASUREMENT in b.a2l and d.a2l is OK. The detailed operation steps can be found in the attachment(bat format

AllInOne251216.txt

).I'm not sure if it's my usage method that's incorrect. Thank you very much!

[DanielT]

Your procedure has too many steps to give any kind of information what might be going wrong.
I still don't understand why your CHARACTERISTICs "can't work correctly". Do you get some kind of error message from INCA or Canape?
What is the difference between a CHARACTERISTIC that works correctly and one that does not?

[autoxgw]

Hi Daniel,
The prompt information is in the attached compressed package, I generated a2l by referring to the user manual, see "A2L_generate_method.png". I tried all three methods, but they all produced the same result. The generated a2l cannot be recognized normally by INCA, see "INCA1.png" and "INCA2.png", In these two pictures, the following prompts are given: The a2l file is unavailable for device xcp. Please select another item; There are no valid devices available for the a2l project. After reconfiguring the host interface options, do you want to retry the search operation? In the TSMaster software, A2L files can be imported. However, there are error messages shown in pictures "TSMASTER1.png" and "TSMASTER2.png". If the value of the calibration are rewritten in TSMaster, it will cause the MCU to reset and the software to restart.

attachment.zip

[DanielT]

Hi,

I took another look at this issue, but I don't see any way to help you with the information I currently have.
At the moment I'm not even convinced that there is a bug in a2ltool. it could just as well be a mismatch between the a2l file you're using and the flashed ECU software. Alternatively your ECU software could be buggy.

In order to provide more technical details, you could:

• reduce your a2lfile to a minimal example, where you can show me exactly what setting is causing your issues
• debug your ecu software to discover why writing to your characteristics triggers a crash.

Any other information that shows how the behavior of a2ltool influences the result could also be useful.