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Can anyone give me an example to software solution to SPI host device pause.

Processors & DSP amu340 Sep 18, 2020 00:00 1 replies Original on forum ↗
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amu340 Question
Sep 18, 2020 00:00

Hi, all,

I want to konwn how to use software way to pause SPI host device when in the SHARC 21479 SPI slave boot. I had read the EE-177, but I cannot solve this problem. Can anybody give me an example how use software manner to pause the SPI host device, Thank you very much.

sharc

spi

dsp&processors

ADIApproved Reply
Sep 25, 2020 00:00

Hi,

The SPI host initiates the transfers a handshake between master and slave is required for synchronization. One possible solution is to use the slave's SPI_MISO_O signal as handshake signal. If a pause is required, the slave transmits zeros or ones to the master. Another solution is to connect this signal to the master's flag input to generate an interrupt for the same purpose. Please refer "Slave Boot Mode" in chapter-24 from ADSP-214xx Hrm from below download link.

www.analog.com/.../ADSP-214xx_hwr_rev1.1.pdf

1) Is the SPI slave boot working properly?

2) Why you need to pause SPI host ?

Please refer this below ezone thread:
ez.analog.com/.../310007

Regards,
Anand Selvaraj.