Hello, I am working with ArduCopter 4.1, trying to set parameter values in a arducopter.apj file. I can create a custom parameter, no problem, as described here: Adding a New Parameter to Copter — Dev documentation.
When I added the parameter to Parameters.h (snippet below) I incremented the k_param_vehicle to 266 from 265.
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k_param_auto_config_enabled,
k_param_blade_hung_up_current,
k_param_my_test_parm,
k_param_vehicle = 266, // vehicle common block of parameters
// the k_param_* space is 9-bits in size
// 511: reserved
};
Then using the apj_tool.py script, I try to initialize this new parameter. BEFORE modifying the .apj file, the scripts shows the following:
python apj_tool.py --show .\arducopter.apj
Loaded apj file of length 1715532
Found param defaults max_length=8192 length=254
setup correct defaults for battery monitoring for cube power brick
BATT2_CURR_PIN 4
BATT2_VOLT_PIN 13
BATT_AMP_PERVLT 39.877
BATT_VOLT_MULT 12.02
BATT2_AMP_PERVLT 39.877
BATT2_VOLT_MULT 12.02
setup ADSB
ADSB_TYPE 1
SERIAL5_BAUD 57
SERIAL5_PROTOCOL 1
I created a .parm file that contains settings for 1 parameter shown below:
Default parameter file for vehicleX
MY_TEST_PARM 30567 @READONLY # users will not be able to modify this parameter
I run the configure process:
python apj_tool.py --set-file newParms.parm .\arducopter.apj
Loaded apj file of length 1715532
Found param defaults max_length=8192 length=254
Setting defaults from newParms.parm
Saved apj of length 1715532
Then show it again:
python apj_tool.py --show .\arducopter.apj
Loaded apj file of length 1715532
Found param defaults max_length=8192 length=118
Notice: 1) The length is now 118 and was 254!
2) None of the original original parameters appear in the second show command.
Also, the new parameter does not get set to the value in the .parm file, and it is not READ ONLY.
Can someone provide some guidance on this?
Thank you.