How to save change via NSH, pls help

@ivan.lincheng wrote:

Hi guys,
my situaton:
so far I know that, output CH1234 belong to group0 and output CH5678 belong to group1
Tricopter tail servo should connect to the CH7 with 50hz default update rate.
1, I'm using a digital servo "333hz", so I wanna change the rates of group1 from 50hz to 333hz.
2, I already tried the NSH CLI "pwm rate -g1 -r 333" command, and show the current configuration"pwm info" as below pictures:

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I5K}YHGIIKONI6A1TO}EU@I.png793x293 15.2 KB

3, My problem is, it will lost the change after I reboot my pixhawk FC,

4, Can anyone tell me how to save the change in NSH CLI, pls help me out!
thanks anyway!

ivan

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