nRF9160 number of simultaneous SPI, I2C and UART

RE: nRF9160 number of simultaneous SPI, I2C and UART

Håkon Alseth — Thu, 05 Sep 2019 08:33:19 GMT

Hi Antoine,

[quote user="Antoine_M-L"][/quote]

So it's mean that I was wrong, since on the nRF9160 we can use only 4 communication bus (SPI/I2C/UART) simultaneously, which correspond to the 4 separate base addresses.

So thanks for your answer, it was very helpful.

Glad to be able to help you out. Let us know if you have any other questions or issues.

Kind regards,

Håkon

RE: nRF9160 number of simultaneous SPI, I2C and UART

Antoine_M-L — Wed, 04 Sep 2019 08:45:38 GMT

Hi Håkon,

Thanks for your reply, it's more clear for me now.

So it's mean that I was wrong, since on the nRF9160 we can use only 4 communication bus (SPI/I2C/UART) simultaneously, which correspond to the 4 separate base addresses.

So thanks for your answer, it was very helpful.

Have a nice day, and best regards,

Antoine

RE: nRF9160 number of simultaneous SPI, I2C and UART

Håkon Alseth — Wed, 04 Sep 2019 07:35:54 GMT

Hi Antoine,

There are shared resources in the nRF9160, like described here:

https://infocenter.nordicsemi.com/topic/ps_nrf9160/twim.html?cp=2_0_0_5_16_0#concept_efd_mxp_xr

If you follow the link to the registers, you can see that each instance of TWIM/TWIS/SPIM/SPIS/UARTE share the same base address. This means that if you want to have 1 x SPIM, 1 x TWIM, and 1 x UARTE, these must all be on different instances, ie:

SPIM0

TWIM1

UARTE2

Kind regards,

Håkon