AD9361 Pin Control Mode for ENSM

I'm not clear on what you need to be synchronized. Are you trying to control ENSM on multiple chips simultaneously? ENSM is only mentioned in the title.

-Travis

yes.   I have 4 chips.  If I use SPI mode, will there be a slight delay in the output data since the FIFO could be piling up data before the next chip gets enabled.  

If you need very precise timing control of the ENSM use pin control. Transitions happen with the device clock, so as long as the clocks going to each part are synchronized they will move together.

-Travis

Is there any software code I can reference to implement pin control?  Do I need any VHDL to accompany it?  Or, just use level mode?

Here is an example we use on the default eval boards and SOMs: https://github.com/analogdevicesinc/linux_image_ADI-scripts/blob/master/test_ensm_pinctrl.sh

Once the part is in pin control mode it will start responding to whatever is connected there. We directly map the GPIOs (which are connected to those pins) back to the ARM for software control.

-Travis

ing travisfcollins Hi;

I am trying to run the following script for dds sweep generation using QT application. When I push button in qt then my script run behind it.During running my script generation f could not found. help to set this: I am using ADRV9361Z7035 FMC carrier board for generating frequency sweep from 70 MHz to 6GHz  using script.

#!/bin/sh

for i in $(find -L /sys/bus/iio/devices -maxdepth 2 -name name)
do
  dev_name=$(cat $i)
  # find the DAC on FMComms1
  if [ "$dev_name" = "cf-ad9122-core-lpc" ] || [ "$dev_name" = "axi-ad9144-hpc" ] ; then
     dac_path=$(echo $i | sed 's:/name$::')
     A1=out_altvoltage0_1A_frequency
     A2=out_altvoltage2_2A_frequency
     B1=out_altvoltage1_1B_frequency
     B2=out_altvoltage3_2B_frequency
     sampl=`cat $dac_path/out_altvoltage_sampling_frequency`
     break
  fi
# if that didn't work, try FMComms2/3
  if [ "$dev_name" = "cf-ad9361-dds-core-lpc" ] ; then
     dac_path=$(echo $i | sed 's:/name$::')
     A1=out_altvoltage0_TX1_I_F1_frequency
     B1=out_altvoltage1_TX1_I_F2_frequency
     A2=out_altvoltage2_TX1_Q_F1_frequency
     B2=out_altvoltage3_TX1_Q_F2_frequency
     A3=out_altvoltage4_TX2_I_F1_frequency
     B3=out_altvoltage5_TX2_I_F2_frequency
     A4=out_altvoltage6_TX2_Q_F1_frequency
     B4=out_altvoltage7_TX2_Q_F2_frequency
     sampl=`cat $dac_path/out_altvoltage_sampling_frequency`
     break
  fi
done
f [ -z $dac_path ] ; then
  echo Could not find any DDS to set
  exit
fi

ny=`expr $sampl / 2`

#save the current settings
init=`cat $dac_path/out_altvoltage0_1A_frequency`

# Set DDSn_A
freq_A(){
  if [ ! -z $A1 ] ; then echo $1 > $dac_path/$A1; fi
  if [ ! -z $A2 ] ; then echo $1 > $dac_path/$A2; fi
  if [ ! -z $A3 ] ; then echo $1 > $dac_path/$A3; fi
  if [ ! -z $A4 ] ; then echo $1 > $dac_path/$A4; fi
}

# Set DDSn_B
freq_B(){
  if [ ! -z $B1 ] ; then echo $1 > $dac_path/$B1; fi
  if [ ! -z $B2 ] ; then echo $1 > $dac_path/$B2; fi
  if [ ! -z $B3 ] ; then echo $1 > $dac_path/$B3; fi
  if [ ! -z $B4 ] ; then echo $1 > $dac_path/$B4; fi
}

for i in `seq 1000000 1000000 $ny`
do
  freq_A $i
  freq_B `expr $ny - $i`
  echo $i
  sleep 1
done

freq_A $init
freq_B $init

ing travisfcollins Hi;

I am trying to run the following script for dds sweep generation using QT application. When I push button in qt then my script run behind it.During running my script generation f could not found. help to set this: I am using ADRV9361Z7035 FMC carrier board for generating frequency sweep from 70 MHz to 6GHz  using script.

#!/bin/sh

for i in $(find -L /sys/bus/iio/devices -maxdepth 2 -name name)
do
  dev_name=$(cat $i)
  # find the DAC on FMComms1
  if [ "$dev_name" = "cf-ad9122-core-lpc" ] || [ "$dev_name" = "axi-ad9144-hpc" ] ; then
     dac_path=$(echo $i | sed 's:/name$::')
     A1=out_altvoltage0_1A_frequency
     A2=out_altvoltage2_2A_frequency
     B1=out_altvoltage1_1B_frequency
     B2=out_altvoltage3_2B_frequency
     sampl=`cat $dac_path/out_altvoltage_sampling_frequency`
     break
  fi
# if that didn't work, try FMComms2/3
  if [ "$dev_name" = "cf-ad9361-dds-core-lpc" ] ; then
     dac_path=$(echo $i | sed 's:/name$::')
     A1=out_altvoltage0_TX1_I_F1_frequency
     B1=out_altvoltage1_TX1_I_F2_frequency
     A2=out_altvoltage2_TX1_Q_F1_frequency
     B2=out_altvoltage3_TX1_Q_F2_frequency
     A3=out_altvoltage4_TX2_I_F1_frequency
     B3=out_altvoltage5_TX2_I_F2_frequency
     A4=out_altvoltage6_TX2_Q_F1_frequency
     B4=out_altvoltage7_TX2_Q_F2_frequency
     sampl=`cat $dac_path/out_altvoltage_sampling_frequency`
     break
  fi
done
f [ -z $dac_path ] ; then
  echo Could not find any DDS to set
  exit
fi

ny=`expr $sampl / 2`

#save the current settings
init=`cat $dac_path/out_altvoltage0_1A_frequency`

# Set DDSn_A
freq_A(){
  if [ ! -z $A1 ] ; then echo $1 > $dac_path/$A1; fi
  if [ ! -z $A2 ] ; then echo $1 > $dac_path/$A2; fi
  if [ ! -z $A3 ] ; then echo $1 > $dac_path/$A3; fi
  if [ ! -z $A4 ] ; then echo $1 > $dac_path/$A4; fi
}

# Set DDSn_B
freq_B(){
  if [ ! -z $B1 ] ; then echo $1 > $dac_path/$B1; fi
  if [ ! -z $B2 ] ; then echo $1 > $dac_path/$B2; fi
  if [ ! -z $B3 ] ; then echo $1 > $dac_path/$B3; fi
  if [ ! -z $B4 ] ; then echo $1 > $dac_path/$B4; fi
}

for i in `seq 1000000 1000000 $ny`
do
  freq_A $i
  freq_B `expr $ny - $i`
  echo $i
  sleep 1
done

freq_A $init
freq_B $init

There is a typo below this needs to be "if" not "f"

f [ -z $dac_path ] ; then
echo Could not find any DDS to set
exit
fi

Thanks for your quick response!

Now When I run the script again and found this one error:

cat: /sys/bus/iio/devices/iio::device4/out_altvolatage_1A_frequency: No such file or directory

Change this line:

#save the current settings
init=`cat $dac_path/out_altvoltage0_1A_frequency`

to:

#save the current settings
init=`cat $dac_path/$A1`

Thanks;

Error has been removed I connect the board with spectrum analyzer but After running script it does not generating any sweep on spectrum. How I can check my script is working fine and generating sweep or not.

Thanks

It should work. Maybe your scales are set to 0?

Try:

# dds_set_scale.sh 2

amplitude set to 0.250000

-Michael

Thank you for your reply, The script is now running in terminal but there is no spike/sweep on spectrum analyzer . I have a question I am working on ADRV9361-z7035 . The command for setting TX LO is out_altvoltage1_TX_LO_frequency as per this link .but in script I didnt find any command like this . so is this script work only on Fmcomms2/3 and i need to make some changes to be run on ADRV9361_z7035.

This script sweeps the DDS cores on the Transport layer HDL cores in the FPGA. And it works equally well on the ADRV9361-z7035.

out_altvoltage1_TX_LO_frequency controls the LO frequency of of the AD9361 Transceiver. That's something completely different. A sweep example for the TX LO can be found here: 

https://github.com/analogdevicesinc/linux_image_ADI-scripts/blob/master/pll_tx_sweep.sh

-Michael

mhennerich  Thanks your reply;

I run TXLO sweep on my transceiver. Script is running for ad9361 from 100MHz to 6 GHz in terminal but it also does not display any sweep on spectrum analyser. Please help me regarding this issue. 

You need to make sure you modulate your baseband. Program the DDS and make sure the scale is > 0.

-Michael