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MSP430F6659: USCI_A and USCI_B for SPI connection

Part Number: MSP430F6659

Hi, I want to ask if the SPI will work if I use USCI_A2 for SIMO and SOMI, but USCI_B2 for CLK, will the SPI works? I made a mistake when I route the PCB for my board, so I am wondering if this will still work or I have to use only USCI_A or USCI_B at one time?

  • Hi, 

    For USCI_A2 and USCI_B2 is two different SPI peripheral. It is unable to utilize them together.

    The only thing I can think of is to run USCI_A2 and USCI_B2 at the same time. As I check the only thing you can do to synchronize the two SPI peripheral is to use the same clock source and enable them one by one. There isn't a same trigger for USCI_A2 and USCI_B2.