Two different I2C channel definition on nRF52840's GPIO

RE: Two different I2C channel definition on nRF52840's GPIO

RK — Thu, 27 Dec 2018 06:02:08 GMT

yes the two instances are at two different base addresses and all the registers are relative to the base address so they are at two different addresses.

RE: Two different I2C channel definition on nRF52840's GPIO

Dhara — Thu, 27 Dec 2018 06:00:13 GMT

Hi,

Thanks for the prompt reply.

I referred the "Memory Map" section of the document and found the TWIM0 and TWIM1 registers for two different I2C channels..But not able to conclude about defining the ports for these two channels..

The TWIM0 and TWIM1 has different set of PSEL.SDA and PSEL.SCL registers?

RE: Two different I2C channel definition on nRF52840's GPIO

RK — Wed, 26 Dec 2018 21:58:17 GMT

There are two different TWI instances, TWIM0 and TWIM1. They are at different addresses, they are separate peripherals with separate registers so you can use them both at the same time. You can find the peripheral chart under the 'Memory Map' in the documentation; not as easy to find as it used to be, the index isn't very good.