Use SPI and I2C on nRF52832 at the same time

[jleng]

Hi, 

I'd like to use SPI and I2C simultaneously on nRF52832. But I came across this post which says "if you use SPI0, TWI0 is not available". Does this prevent me from using SPI and I2C at the same time? If not, how many SPI and I2C, together, can nRF52832 support?

Thank you!

[jleng]

It probably doesn't matter but I'm using Zephyr RTOS

[Shaney]

You can only use one peripheral with the shard ID at one given time. See https://infocenter.nordicsemi.com/topic/com.nordic.infocenter.nrf52832.ps.v1.1/memory.html?cp=4_2_0_7_3#topic for which perihperals that share ID's. As you can see in the table, the SPI and the TWI shares ID's so if you want to use SPI and TWI at the same time you'll need to use SPI0 and TWI1 for example.

If I read the table correctly you have 3 SPI/TWI available so you could use any of the following combinations:

3 SPI	0 TWI
2 SPI	1 TWI
1 SPI	2 TWI
0 SPI	3 TWI

Hope it is to any help.

[jleng]

Thank you Shaney. It helps!