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KC705-FMCOMMS1-AD9548 Configuration via Linux

Question asked by kpiterrr on Feb 4, 2016
Latest reply on Feb 5, 2016 by kpiterrr


The AD9548 configuration is done as part of the Linux driver initialization. I'm looking the way how to modify AD9548 registers from the Linux dynamically for precise frequency adjustment.

I see devices:

# cat /proc/devices

Character devices:

  1 mem

  4 ttyS

  5 /dev/tty

  5 /dev/console

  5 /dev/ptmx

10 misc

89 i2c

90 mtd

128 ptm

136 pts

153 spi

204 ttyUL

253 bsg

254 iio


Block devices:

  1 ramdisk

259 blkext

254 xsysace



I tried create the device for write and read to i2c-spi bridge:

mknod /dev/spidev32766.2 c 153 32766

But I got an error during opening device /dev/spidev32766.2 from the user space application programm.


Do you have any solution for communication with AD ICs?