Fix I2C Slave Compile

[mrengineer7777]

Summary

I2C Slave currently doesn't compile for projects where Arduino is an IDF component. This adds missing conditionals.

Impact

esp32-hal-i2c-slave.c will compile

Related links

N/A

[CLAassistant]

All committers have signed the CLA.

[Jason2866]

@mrengineer7777 This is needed too https://github.com/tasmota/arduino-esp32/pull/47/files

[mrengineer7777]

@mrengineer7777 This is needed too https://github.com/tasmota/arduino-esp32/pull/47/files

@Jason2866 That fix is in "esp32-hal-spi.c" and appears unrelated to my fix in "esp32-hal-i2c-slave.c".

[Jason2866]

I thought you want to fix all issues when Arduino is used as IDF component.

[mrengineer7777]

I thought you want to fix all issues when Arduino is used as IDF component.

@Jason2866 Gotcha. I just found the repository "tasmota / arduino-esp32". Impressive work!

[Jason2866]

The real impressive (why it is made) is the project which use -> https://github.com/arendst/Tasmota

[mrengineer7777]

@me-no-dev It appears the automated checks failed because of a network timeout.

[me-no-dev]

merged :)