saramonteiro opened a new pull request #4169:
URL: https://github.com/apache/incubator-nuttx/pull/4169
## Summary
This MR:
- Makes the output readable because the gpio example reads the output.
- Remove unnecessary variable that could be replaced by the loop index.
Besides that, the used variable to register the drivers were being used without
reseting to register the input gpio drivers. What was leading to a weird
registration: (`/dev/gpout0`, `/dev/gpout1`, `/dev/gpint2`) instead of
(`/dev/gpout0`, `/dev/gpout1`, `/dev/gpint0`).
## Impact
Now gpio example runs and verify value is really representing the value of
the output.
## Testing
Using gpio example.
Before:
```
nsh> gpio -o 1 /dev/gpout0
Driver: /dev/gpout0
Output pin: Value=0
Writing: Value=1
Verify: Value=0
```
After:
```
nsh> gpio -o 1 /dev/gpout0
Driver: /dev/gpout0
Output pin: Value=0
Writing: Value=1
Verify: Value=1
```
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