fdcavalcanti opened a new pull request, #18406:
URL: https://github.com/apache/nuttx/pull/18406
## Summary
This PR adds three new defconfigs to `esp32-devkitc`: `gpio`, `i2c` and
`spi`. Those are available on other boards but were missing from the
`esp32-devkitc`.
<!-- This field should contain a summary of the changes. It will be
pre-filled with the commit's message and descriptions. Adjust it accordingly -->
* documentation: update ESP32 docs for spi, gpio and i2c
Adds description for the GPIO, SPI and I2C defconfigs for the
esp32-devkitc board.
* board/xtensa/esp32: add SPI defconfig
Add SPI defconfig for ESP32-DevKit-C.
* board/xtensa/esp32: add GPIO defconfig
Add a GPIO defconfig for ESP32-DevKit-C.
* boards/xtensa/esp32: add I2C defconfig and update board source
Add I2C defconfig to esp32-devkitc board and update some board
ifdefs.
* arch/xtensa/esp32: select I2C_DRIVER on I2C
Automatically select I2C_DRIVER when ESP32_I2C is selected.
## Impact
<!-- Please fill the following sections with YES/NO and provide a brief
explanation -->
Impact on user: New defconfigs available: gpio, spi, i2c.
Impact on build: No.
Impact on hardware: Only ESP32 devices.
Impact on documentation: Adds defconfig description on the esp32-devkitc
page.
Impact on security: No.
Impact on compatibility: No.
## Testing
### Building
Build each of the new defconfigs and flash the board:
```
./tools/configure.sh esp32-devkitc:spi
./tools/configure.sh esp32-devkitc:i2c
./tools/configure.sh esp32-devkitc:gpio
```
### Running
Merge and flash as usual.
### Results
- SPI:
```
nsh> ls /dev
/dev:
console
null
spi2
ttyS0
zero
nsh> spi bus
BUS EXISTS?
Bus 2: YES
Bus 3: NO
```
- GPIO:
```
nsh> ls /dev
/dev:
console
gpio0
gpio1
gpio2
null
ttyS0
zero
nsh> gpio -o 1 /dev/gpio0
Driver: /dev/gpio0
Output pin: Value=0
Writing: Value=1
Verify: Value=1
```
- I2C:
```
nsh> ls /dev
/dev:
console
i2c0
null
ttyS0
zero
nsh> i2c bus
BUS EXISTS?
Bus 0: YES
Bus 1: NO
Bus 2: NO
Bus 3: NO
```
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