Questions about I2C and SPI
Posted: Tue May 30, 2017 4:28 pmHi,
I'm beginner with ESP-12E board, and have two questions about I2C and SPI:
1) May I connect up to 8 I2C devices to ESP-12E? I think the clock frequency is 80MHz, is that OK to use 400KHz for I2C?
2) I also consider to use SPI to connect multiple devices. If I use GPIO as chip select, may I connect 4 SPI slave devices on one SPI master?
Thanks a lot.
I'm beginner with ESP-12E board, and have two questions about I2C and SPI:
1) May I connect up to 8 I2C devices to ESP-12E? I think the clock frequency is 80MHz, is that OK to use 400KHz for I2C?
2) I also consider to use SPI to connect multiple devices. If I use GPIO as chip select, may I connect 4 SPI slave devices on one SPI master?
Thanks a lot.