Multiple Port LSPSPI

Khaledag — Tue, 23 Apr 2024 08:01:04 GMT

I am trying to initiate an SPI transmission over these ports:

SCLK: PTC15

MISO: PTE16

MOSI: PTC1

CS: PTC14

but the CS isn't working at all. But if I change CS to PCS3 then it works, which is not cool because I already have my PCB pinout to PTC14.

Another Problem is that I cant seem to see any data on MISO: PTE16. Should I be considering another art of port initialization when I have 2 Ports?
I init them like this:

PCC->PCCn[PCC_PORTE_INDEX ]|=PCC_PCCn_CGC_MASK; /* Enable clock for PORTE */
PCC->PCCn[PCC_PORTC_INDEX ]|=PCC_PCCn_CGC_MASK; /* Enable clock for PORTC */

Re: Multiple Port LSPSPI

PetrS — Tue, 23 Apr 2024 10:58:06 GMT

Hi,

if a PTC14 pin is configured to select LPSPI2 PCS0 function and LPSPI2 TCR is selecting PCS0, then you should see signal on it.

If PTE16 is used as SIN then PTE port clock have to be enabled too.

BR, Petr

topic Re: Multiple Port LSPSPI in S32K

Multiple Port LSPSPI

Re: Multiple Port LSPSPI