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reduce read/write time in SPI driver on MQX 4.0.2

Question asked by Franicsco Helder on Mar 27, 2014
Latest reply on Apr 8, 2014 by Jozef Maslik

I need to reduce the time of date transfer by SPI drive. The time to write/read data is:

ioctl (spiFD, IO_IOCTL_SPI_READ_WRITE, &rw) -> 18 us

ioctl (spiFD, IO_IOCTL_SPI_FLUSH_DEASSERT_CS, NULL) -> 8us

sum = 26 us

 

I need 4us in FULL_DUPLEX mode. is possible? help me..

 

Att,

Francisco

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