spis 数据发送不正常

RE: spis 数据发送不正常

Amanda Hsieh — Wed, 04 Dec 2019 11:48:20 GMT

Assuming nRF52832 operates as an SPIS slave then there must be a delay between CSN (Enable) go low, and first CLK cycle. This delay depends on the power mode (see https://devzone.nordicsemi.com/support-private/support/207669#permalink=371965), the delay should be >10us for low power mode (default) and >1us for constant latency mode.

-Amanda H.

RE: spis 数据发送不正常

swibyn — Tue, 03 Dec 2019 13:29:45 GMT

Did you test it with my code? I tested it with two efm32zg boards, and both produce the same problem.

or could you send your code to me.

RE: spis 数据发送不正常

Amanda Hsieh — Tue, 03 Dec 2019 07:03:58 GMT

Unfortunately, we do have efm32zg210f32 and could not use DKs to reproduce the problem.

-Amanda H.

RE: spis 数据发送不正常

swibyn — Fri, 29 Nov 2019 02:34:19 GMT

Yes,I did

RE: spis 数据发送不正常

Amanda Hsieh — Thu, 28 Nov 2019 12:39:26 GMT

Did you set the same SPI mode on both sides?

-Amanda H.

RE: spis 数据发送不正常

swibyn — Thu, 28 Nov 2019 03:43:50 GMT

when i set the spi mode to mode1, mode2, it works。

when i set the spi mode to mode0, mode3, the error occurs。

I donot known why

RE: spis 数据发送不正常

swibyn — Thu, 28 Nov 2019 02:29:07 GMT

I also test other three situations(nRF52832DK as SPIM with nRF52832DK as SPIS,nRF52832DK as SPIM with efm32 as SPIS, efm32 as SPIM with efm32 as SPIS), they all work well, only use efm32 as SPIM with nRF52832DK as SPIS, it make mistake。
efm32 means efm32zg210f32

my nRF52832DK code file and efm32zg210f32 code file。

devzone.nordicsemi.com/.../8507.main.c

devzone.nordicsemi.com/.../7750.main.c

RE: spis 数据发送不正常

Amanda Hsieh — Tue, 26 Nov 2019 12:55:21 GMT

Hi,

Did you modify the spis example code? If so, what is that? Could you share with us?

I tested two nRF52832DKs with SPI Master Example and SPI Slave Example, and I could not reproduce the problem.

-Amanda H.

RE: spis 数据发送不正常

swibyn — Tue, 26 Nov 2019 01:20:34 GMT

Yes, in the example, the MISO pin is p0.30, but i use the silicon's efm32zgf32 to work as the Master spi。

RE: spis 数据发送不正常

Amanda Hsieh — Mon, 25 Nov 2019 13:59:45 GMT

Hi,

Do you mean nRF52832DK MISO sent incomplete data while executing the SDK 16/spis example? If so, which pin are you using for MISO on Slave and Master boards?

-Amanda H.