what are TWI_INSTANCE_ID 0 and TWI_INSTANCE_ID 1?

[inghowe83]

Hi Nordic team,

I having problem understand TWI_INSTANCE_ID and what are usage of this configuration?

For example, if I were to use 2 different TWI hw port (SCL1,SDA1,SCL2,SDA2) I will need to enable TWI_INSTANCE_ID 0 and TWI_INSTANCE_ID 1 and assign TWI_INSTANCE_ID 0 to SCL1,SDA1 and TWI_INSTANCE_ID 1 to SCL2,SDA2?

Thanks.

[Jørgen Holmefjord]

Hi,

Yes, this is correct. The IC can support multiple instances of a serial peripheral (TWI/SPI/etc). The possible iinstantiations and it's base addresses is shown in Instantiation documentation, in addition to the peripheral registers documenation.

Best regards,
Jørgen

[inghowe83]

thanks!