Hardware triggered LPSPI transmission for I.MX RT 1020
‎04-29-2020
12:52 PM
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bopeng
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Hello,
I plan to use LPSPI to access the esternal ADC. I would like to have a sampling rate at 500 KHz. I find the module XBARA can provide a hardware trigger for LPSPI.
My question is that if I use this hardware trigger for LPSPI. Do I need to send software command to start SPI communication?
How many transmission would happen after one hardware trigger?
Best regards,
Bo
1 Reply
‎05-06-2020
08:32 AM
774 Views
bopeng
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I have figured out a solution by using QTIMER and DMA. Somehow this issue is solved.