KCC Quizzes AQQ303 about the radius of a circle
1. Quote of the month: "When I die, I want to die like my grandfather who died peacefully in his sleep. Not screaming like all the passengers in his car" - Will Rogers
2. Quiz AQQ304 about finding the radius of a circle
Good luck, and try to be
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August Monthly Blog Quiz! Read the blog, take the quiz, and you could win a gift card
Important: Read the blog first . The quiz questions are all based on the content of the blog:
Stay in the loop and win! Read the blog Current Output Driving Industrial Loops , then take our quick five-question quiz for a chance to win a gift card
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AD7768-4
Recommended for New Designs
The AD7768/AD7768-4 are 8-channel and 4-channel 24-bit, simultaneous sampling, sigma-delta (Σ-Δ) analog-to-digital converters (ADCs) with power scaling...
Datasheet
AD7768-4 on Analog.com
Hi,
I am working on AD7768 connected to a Variscite Dart MX8-Plus board, with Linux 5.10.2 image running on it. DartMX8-Plus board is connected to AD7768 through SPI to control and at data side, it is connected through SAI.
I have ported the AD7768.c(4 channel/8 channel driver) from Analog devices into Linux 5.10.2.
I am able to configure AD7768, read/write registers through SPI.
In /sys/bus/iio/devices# cd iio\:device0 , following files are seen.
root@imx8mp-var-dart:/sys/bus/iio/devices/iio:device0# ls
buffer name sampling_frequency_available
consumers of_node scan_elements
dev power subsystem
filter_type power_mode suppliers
filter_type_available power_mode_available uevent
in_voltage_scale sampling_frequency
root@imx8mp-var-dart:/sys/bus/iio/devices/iio:device0#
How to start continuous sampling on AD7768 ? Is it possible to start continuous sampling, by writing to a register ?
Thanks,
Thomas
Hi tpoly ,
We will look into this. I will contact the product owner and get back to you.
Regards,
JC
Hi Thomas,
Upon power up the ADC is continuously sampling at default ODR. You can use SYNC to control the start of conversion. Please check these FAQs.
(+) Multiple AD7768-4 SYNC_IN sample rate. - Q&A - Precision ADCs - EngineerZone (analog.com)
(+) AD7768-4 - Q&A - Precision ADCs - EngineerZone (analog.com)
(+) Synchronising multiple AD7768s to achieve simultaneous sampling of more than 8 channels
AD7768 FAQ - What is a SYNC and when is it required?
AD7768 SYNC vs. RESET
Thanks,
Jellenie