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Procedure to change use different PCS of SPI0 during runtime?

Question asked by Michael Koller on Aug 5, 2016
Latest reply on Aug 16, 2016 by Michael Koller

Hey there!

I am trying to use the SPI0 module of my K64F to read sensor data. I can initialize the SPI0 in a way, that I get the reading of only one of the four sensors. That means, I configure the SPI0 at the start of the program to PCS0, 1, 2 or four.

But I cannot change the PCS during runtime. What is the way to do this?

This is my most elaborate try, which also does not work:





dspiResult = DSPI_DRV_MasterDeinit(DSPI_MASTER_INSTANCE); //Deinit old PCS

dspiResult = DSPI_DRV_MasterInit(DSPI_MASTER_INSTANCE, //Init new PCS



dspiResult = DSPI_DRV_MasterConfigureBus(DSPI_MASTER_INSTANCE,



dspiResult = DSPI_DRV_MasterTransfer(DSPI_MASTER_INSTANCE,





while (DSPI_DRV_MasterGetTransferStatus(DSPI_MASTER_INSTANCE, &wordsTransfer) == kStatus_DSPI_Busy)







Where is my problem, what am I missing? Please tell me the steps and function calls to do this.

I would be very glad if someone could tell me the correct procedure to do this. I have read the Spi chapter in the manual, but could not find the appropriate pages for that.

Thanks for any help and information!