nrf52832 twis problem

RE: nrf52832 twis problem

Jørgen Holmefjord — Mon, 06 Jan 2020 10:12:50 GMT

No, nRF51822 does not have a TWIS peripheral and will only support TWI/I2C master mode.

RE: nrf52832 twis problem

455 — Tue, 24 Dec 2019 01:05:58 GMT

Can I use iic salve for 51822?I found twi slave in SDK, feeling that only nrf52 series class can be used

RE: nrf52832 twis problem

Jørgen Holmefjord — Tue, 03 Apr 2018 08:31:37 GMT

Do you put the nRF device in sleep mode while waiting for the transfer? The TWIS peripheral requires 1.5 to 4.5 µs from PREPARERX task until ready to receive. Please try enabling constant latency mode, or disable sleep mode entirely, to see if this solve the issue.

RE: nrf52832 twis problem

fletort — Sat, 24 Mar 2018 21:50:51 GMT

And also with a stm32 as a master. On each transfert, TWIS_EVT_WRITE_REQ is recevied but never TWIS_EVT_WRITE_DONE. I am using a code similar to the twis example.... can i miss something ?

RE: nrf52832 twis problem

fletort — Fri, 23 Mar 2018 16:01:44 GMT

Hello,

i have exactly the same behaviour with an Arduino Leonardo.

TWIS_EVT_WRITE_REQ are recevied, but never TWIS_EVT_WRITE_DONE.

I seems that nRF does not detect the STOP bit of my Arduino or something like that ?

RE: nrf52832 twis problem

Jørgen Holmefjord — Wed, 05 Jul 2017 11:27:13 GMT

Are you handling the TWIS_EVT_WRITE_REQ event? Have you tried debugging your application to see where it is stuck?

RE: nrf52832 twis problem

JaeHo — Tue, 04 Jul 2017 16:06:46 GMT

Thank you, answer! SDK version is 12.0.0

I modified example code but before modification example code is same result.

(\nRF5_SDK_12.0.0_d7731ad\examples\peripheral\twi_master_with_twis_slave\pca10040\blank\arm5_no_packs\twi_master_with_twis_slave_pca10040)

I add code [case TWIS_EVT_READ_REQ: NRF_LOG_INFO("READ_REQ\r\n"); NRF_LOG_FLUSH();] but not print. not work after print 'twis_evt: 3'.

[terminal result]

twis_evt: 3

RE: nrf52832 twis problem

Jørgen Holmefjord — Tue, 04 Jul 2017 13:39:16 GMT

You can find the documentation of the nrf_drv_twis_evt_type_t struct in the infocenter. type = 3 means TWIS_EVT_WRITE_REQ. Which SDK version are you using? Are you using the example without modifications?