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https://issues.apache.org/jira/browse/MYNEWT-543?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15886077#comment-15886077
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David G. Simmons commented on MYNEWT-543:
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Most of the other newt target set commands are binary in nature. The bsp= is
either this value or that value, but it's not going to have multiple values.
Likewise for the app=, etc. The ONLY one (that I am aware of) that can take a
list is the syscfg values. So, if it is *only* editable via newt target set
then the newt target set string gets *very* long quickly. Example, for my air_q
demo app:
# newt target set air_q
syscfg:OPENOCD_DEBUG=1,SHELL_TASK=1,STATS_CLI=1,CONSOLE_TICKS=0,CONSOLE_PROMPT=1,UART_0_PIN_TX=23,UART_PIN_0_RX=24,CONFIG_NEWTMGR=1
And if I want to, say, simply turn the console prompt off, I have to enter that
entire string again, minus the CONSOLE_PROMPT part.
Since we strongly discourage the editing of package-level syscfg.yml files, a
suer that wants to override settings for a number of packages may very well
have a large number of app-specific syscfg settings to enter. Massive `newt
target set` command strings invite typos and frustration, IMO.
> setting sys cfg values via newt erases old settings
> ---------------------------------------------------
>
> Key: MYNEWT-543
> URL: https://issues.apache.org/jira/browse/MYNEWT-543
> Project: Mynewt
> Issue Type: Bug
> Components: Newt
> Affects Versions: v1_0_0_beta1
> Environment: Mac OS X
> Reporter: David G. Simmons
> Assignee: Wanda Chiu
> Priority: Minor
> Fix For: v1_0_0_rel
>
>
> DSimmons-Pro:myproj dsimmons$ cat targets/air_q/syscfg.yml
> \### Package: targets/air_q
> syscfg.vals:
> OPENOCD_DEBUG: 1
> \# Enable the shell task.
> SHELL_TASK: 1
> STATS_CLI: 1
> CONSOLE_TICKS: 1
> CONSOLE_PROMPT: 1
> DSimmons-Pro:myproj dsimmons$ newt target set air_q syscfg=OPENOCD_DEBUG=0
> Target targets/air_q successfully set target.syscfg to OPENOCD_DEBUG=0
> DSimmons-Pro:myproj dsimmons$ cat targets/air_q/syscfg.yml
> \### Package: targets/air_q
> syscfg.vals:
> OPENOCD_DEBUG: 0
> DSimmons-Pro:myproj dsimmons$
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