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ADS7955 SPI ADC kernel driver limited to 2.5Khz

SAmmi1
Beginner
1,442 Views

Can anyone comment on why we can only get 2.5Khz measurement retrieval speed from the ADS7955 kernel driver provided with the Edison?

Is it a limitation of the kernel drivers or the SPI hardware itself? Does anyone know where the bottleneck is?

This AD device is advertised as having 1Mhz measurement rate but yet when paired with the Edison it seems to be crippled at 2.5Khz.

Please Help!

Sergio

1 Solution
Pablo_M_Intel
Employee
156 Views

Hi Sergio_Ammirata_Ph.D.,

Thank you for your patience.

About your question, it is a known issue with the SPI driver and it is being worked on. Hopefully it will be fixed in a future software release.

Regards,

PabloM_Intel

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2 Replies
Pablo_M_Intel
Employee
156 Views

Hi Sergio_Ammirata_Ph.D.,

We are investigating your case, we hope to have an answer soon.

Regards,

PabloM_Intel

Pablo_M_Intel
Employee
157 Views

Hi Sergio_Ammirata_Ph.D.,

Thank you for your patience.

About your question, it is a known issue with the SPI driver and it is being worked on. Hopefully it will be fixed in a future software release.

Regards,

PabloM_Intel

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