AnsweredAssumed Answered

multiple spi buses

Question asked by richard clouse on May 14, 2019
Latest reply on May 21, 2019 by Daniel Martynek

i have an s32k148 eval board and I'm trying to use 2 spi masters from it to talk to 2 seperate buses. I used processor expert to configure lpspi1 just like the lpspi0. i'm using the lpspi_transfer example. the chip select for lpspi1 is not coming down. I made them active low because I am talking to mcp23s17 expanders as slaves. lpspi0 works but chip select is not coming down for lpspi1. I am using the wiring called out in the example except I'm going to 2 seperate busses using the same pins from the example. does anyone know this code well enough to debug where chip select is pulled down? I can't even find it.