LPSPI module- keeping chip select active

SK_98 — Wed, 01 Jun 2022 05:44:23 GMT

Hi all,

I'm using LPSPI module of K32L2A41VLL1A to send/receive data to/from External flash. My requirement is to first send command data with Rx buffer null and then receive the buffer with tx null. i.e., after sending command there's a second send/receive function to retrieve the received buffer. But I'm not able to get that data. Can you help me with the configurations I have to do so that the Rx buffer data is not lost during my second transaction?

Thanks in advance!

Shri

Re: LPSPI module- keeping chip select active

hefan — Wed, 01 Jun 2022 06:22:30 GMT

After send command data with Rx buffer null, lpspi pull cs high.You can Transfer with rx no null and tx no null.

RT1170，for reference：

hefan_2-1654064485616.png

hefan_1-1654064347837.png

K32 L Series Microcontrollers中的主题 Re: LPSPI module- keeping chip select active

LPSPI module- keeping chip select active

Re: LPSPI module- keeping chip select active