S32KのトピックRe: S32K148-Q176 LPSPI communication

S32K148-Q176 LPSPI communication

carolineliu_wiw — Wed, 19 Feb 2020 14:52:53 GMT

Hello, guys！

Now i 'm trying to do lpspi communication on s32k148q176 EVB. I meet some problems.

I want to use one lpspi as Master,and two lpspi as Slave. so I find one example project "lpspi_dma_s32k148". This example project can do spi communcation successfully, lpspi0 acts as Master to send data, and lpspi1 acts as Slave to receive data. Then I change its configuration. I add one CHIP SELECT pin in lpspi0 “Component Inspector->Properties->Configurations”,also add another lpspi namely lpspi2 as Slave. I try to generate code, it shows many errors. I don't know how to solve it.TAT

Here is my lpspi0-Master Configuration.

Here is lpspi1 Configuration.

Here is lpspi2 Configuration.

Here is lpspi pin Configuration.

Here are errors.

Thanks.

Liu.

Re: S32K148-Q176 LPSPI communication

raresvasile — Thu, 20 Feb 2020 10:04:11 GMT

Hi,

Please restart S32DS, it will work afterwards.

Thanks,

Rares

Re: S32K148-Q176 LPSPI communication

Nanettebreaux — Fri, 13 Jan 2023 03:43:34 GMT

The transfer on LPSPI is slightly different from I2C:

• Host will receive 1 byte after it sends out any byte.

• Received bytes should be ignored when host is sending out bytes to target

• Host starts reading bytes by sending 0x00s to target

• The byte 0x00 will be sent as response to host if target is under the following MyGeorgiaSouthern