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Associate II
February 7, 2024
Solved

SPC564Ax: My SPI chip select logic is inverted!

  • February 7, 2024
  • 1 reply
  • 1168 views

Dear experts,

 

I have worked with the SPI of  SPC563 without any problem before. Also, I checked the example of the SPC564 and I am not seeing any differences. now I am trying to config the SPI of a SPC564A70 myself. When I monitored the chip select pin with osciloscope, I saw that the logic of CS pin is inverted. meaning that it is low all the time and when I send the message it becomes high. I also checked the inactive state of the pin in configurations and all of them are "inactive high". can you help me regarding this issue?

 

Thank you

This topic has been closed for replies.
Best answer by Giuseppe DI-GIORE

Hello,

please, check in SPC5Studio the DSPI configuration, the inactive state of the PCS.

See picture below:

dspi_config.jpg

Best Regards.

1 reply

Giuseppe DI-GIORE
ST Employee
April 16, 2024

Hello,

please, check in SPC5Studio the DSPI configuration, the inactive state of the PCS.

See picture below:

dspi_config.jpg

Best Regards.