gustavonihei opened a new pull request, #6538:
URL: https://github.com/apache/incubator-nuttx/pull/6538
## Summary
This PR intends to add driver support for the I2C peripheral for the
**ESP32-S3** chip.
**Features**:
- Operation currently restricted to Master mode only
- Support for both I2C0 and I2C1
- Support for Interrupts and Polled mode (`CONFIG_I2C_POLLED=y`)
- Support for I2C Character device driver (`CONFIG_I2C_DRIVER=y`)
## Impact
New feature for **ESP32-S3** chip.
## Testing
`esp32s3-devkit:i2c`
Using I2C tool (`CONFIG_SYSTEM_I2CTOOL`), the driver was validated via
integration with an external BMP180 pressure sensor module, on both I2C0 and
I2C1 interfaces.
```bash
NuttShell (NSH) NuttX-10.3.0
nsh> ls /dev
/dev:
console
i2c0
i2c1
null
ttyS0
nsh> i2c get -a 77 -r d0
i2cdrvr_ioctl: cmd=2101 arg=3ffb6370
i2c_transfer: Message 0 transfer complete.
i2c_transfer: Message 1 transfer complete.
Elapsed time: 0
1. STATUS: 3700c001 COUNT: 1 EVENT: SENDADDR ( 1) PARM: 00000077 TIME: 0
2. STATUS: 3700c001 COUNT: 1 EVENT: RCVMODEEN ( 3) PARM: 00000000 TIME: 0
3. STATUS: 3700c101 COUNT: 1 EVENT: RCVBYTE ( 4) PARM: 00000000 TIME: 0
4. STATUS: 3700c001 COUNT: 1 EVENT: STOP ( 5) PARM: 00000001 TIME: 0
READ Bus: 0 Addr: 77 Subaddr: d0 Value: 55
nsh>
```
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