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GusA
Joined: 28 Mar 2020 Posts: 5 Location: York, PA
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SPI mode change |
Posted: Tue Mar 30, 2021 1:43 pm |
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I am working with a PIC18F67K22 microcontroller, using the PCWH compiler ver 5.093.
I have a working SPI bus configured as follows:
#use spi (MASTER, SPI1, BAUD=500000, MODE=0, BITS=8, STREAM=SPI_1)
The bus is operational with all spi devices except for one that requires the MODE=1 (IDLE=0 and SAMPLE_FALL). I have not found a library function that can change modes within the program (when communicating with the particular device).
Is there any way, besides using assembly (#asm.....#endasm)?
Thanks! |
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GusA
Joined: 28 Mar 2020 Posts: 5 Location: York, PA
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Posted: Tue Mar 30, 2021 2:29 pm |
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CCS technical support replied as follows, which BTW I tried and worked fine:
You can do this:
#use spi (MASTER, SPI1, BAUD=100000, MODE=0, BITS=8, STREAM=SPI_1A) #use spi (MASTER, SPI1, BAUD=100000, MODE=1, BITS=8, STREAM=SPI_1B)
Call spi_init() to change the mode and always use the right stream ID for the SPI calls. |
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Ttelmah
Joined: 11 Mar 2010 Posts: 19504
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Posted: Tue Mar 30, 2021 11:31 pm |
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Yes, this has been answered here before. Using two (or more) streams. |
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