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PSoC 5, 3 & 1 MCU

Anonymous
Not applicable
‎Oct 11, 2013 04:07 AM

SPI DATA WIDTH

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Hi,

   

     I'm pretty new in using the PSOC. Now  I'm using CY8C3866AXI to control TLC5922 through SPI. This needs to change the data width of the spi from 8 to 7 or vice versa time to time . but SPIM_DATA_WIDTH is generated automatically in SPIM.h. So,how can change it ? thank you!

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HeLi_263931
Honored Contributor II
‎Oct 11, 2013 07:10 AM

Re: SPI DATA WIDTH

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Reading the data sheet, I don't see the need for 7 bit transfer. The TLC5922 wants to get either 16 bits (2 bytes) or 112 bits (14 bytes). The first amounts to 1 bit per LED, the second one to 7 bit per LED. But for both you can use a SPI master configured to 8-bit-words.

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sPI change data width