January 8, 2019

AT91SAM9260 SPI DRIVER

Hi Caglar, Just a comment about your post. May be with a little FPGA. If this is the case then: I need to syncronize all the ADCs. That’s fast enough for my project. So you should adjust SPI transfer rate accordingly.

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On Tuesday 28 July The 2 case may apply on my project.

AT91SAM9260

If that is not the case then I wonder if your evalutation kit has a decoder for CS pins. Then, read the conversion results one by one. That’s fast enough at91sam92260 my project. I’m sure AD has better offerings for these kind of applications.

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Otherwise how do you plan to interface 16 ADCs to your ? Can PDC be a help?

Ideally, all ADCs should be samples at the same time although the data can be transferred in serial order. Tuesday, July 28, 8: The CS sholud at1sam9260 low during conversion and data transfer.

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need help on SPI

Sli this is the case then: It will permit to synchronize the 16 converters and to meet up to kps rate. So it will never be able to sample multiple inputs at one time. Do you need to synchronize all the ADCs? For single ADC, I can communicate with it as following order: On Monday 27 Sp As you mentioned, kps will be splitted by 16 channels, it will be: My expected rate is Hz.

Arduino Robotics Lonnie At91zam9260. It will take over us, that is too long for my application. Your AD converters are capable of shifting data to each other.

AT91SAM unexpected SPI behavior

Monday, July 27, 6: I need to syncronize all the ADCs. Chronological Newest First Greeting to everyone. Sign in Sign in Remember me Forgot username or password? If you need multiple inputs to sample simultaneously, you need either multiple sample and hold at91dam9260 or multiple ADCs. May be with a little FPGA.

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Theorically, you need 3 bytes at a maximum SPI clock of 2. Hi, It seems that you would like to synchronize your 16 ADCs.

at91sam_pio.h

If so, whether the data from 16 ADCs will be buffered total will be 32 bytes? Hi, What is your expected rate? Use of At91sa9m260 is optional but definitely useful.

So you should adjust SPI transfer rate accordingly. This process qt91sam9260 about 50us. As you do not tell us which ADC you are using, I suggest you 2 possibilities: