Hi All
I''m so confused . my platform is TM4C129X +CC1200 , I porting simpliciTI protocol in this platform.
MRFI_SPI_DRIVE_CSN_LOW();
Mrfi_DelayUsec(10);
MRFI_SPI_DRIVE_CSN_HIGH();
/* hold CSn high for at least 40 microseconds */
Mrfi_DelayUsec(40);
/* pull CSn low and wait for SO to go low */
MRFI_SPI_DRIVE_CSN_LOW();
while(MRFI_SPI_SO_IS_HIGH());
when I do the CSN_LOW(); the MISO should be the low, but the MOSI become high, when I do the CSN_HIGH, the MOSI pin become LOW. and I don't know why.
