how to specifically initialize the I2C pin on NRF52832?

RE: how to specifically initialize the I2C pin on NRF52832?

asmita_patil — Mon, 19 Aug 2019 11:19:14 GMT

yes..m just trying to read revision id register (0x81)...it is supposed to return 21..i am new to twi devzone.nordicsemi.com/.../vcnl4020_5F00_main.c

this is what i am doing...the code is getting stuch at " while(m_xfer_done==false);"

t = nrf_drv_twi_is_busy(&m_twi); function returns true indicating that it is busy..why is nrf52832 is busy reading register... i am not understanding...will you help..

thank you for your reply

RE: how to specifically initialize the I2C pin on NRF52832?

Jørgen Holmefjord — Fri, 16 Aug 2019 09:21:50 GMT

TWI sensor example should work fine, but you need to modify it to read and write the correct registers.

RE: how to specifically initialize the I2C pin on NRF52832?

asmita_patil — Fri, 16 Aug 2019 09:07:16 GMT

i am using vcnl4020 sensor and want to interface it to nrf52832 DK...which of above example would be more appropriate for this...m just trying to read sensor.....i was using twi_sensor eample for this....

i am using nrf52832 SDK 15.3

than you..your answer would be great help to me

RE: how to specifically initialize the I2C pin on NRF52832?

vishal — Thu, 06 Jul 2017 18:56:21 GMT

Thank you, Jorgen for help....! I'll take a look

RE: how to specifically initialize the I2C pin on NRF52832?

Jørgen Holmefjord — Thu, 06 Jul 2017 18:40:28 GMT

If you want to setup the peripheral on the register-level, you need to look in the nRF52832 product specifications. There are both legacy TWI and TWIM with EasyDMA support in the nRF52832. This example on GitHub show setup of TWIM peripheral using registers only.

RE: how to specifically initialize the I2C pin on NRF52832?

vishal — Thu, 06 Jul 2017 18:20:18 GMT

Thank you for your reply, But I still don't understand how to initialize the pins. My question is, how to initialize the particular pin for i2c these above programs are predefined. Plz advise

RE: how to specifically initialize the I2C pin on NRF52832?

Jørgen Holmefjord — Thu, 06 Jul 2017 09:36:43 GMT

Hi,

There are multiple TWI (I2C-compatible) examples in our SDK:

Best regards,

Jørgen