TI Beagle SPIDEV

Samuel Raj1

I notice that with continuous reading (SPI) I get a delay of about 18us between each read, I am not sure why, anyone else see this?

Regards,

Samuel

0 Biser Gatchev-XID over 12 years ago

Hi Samuel,

How about telling what processor you use, and what software?

0 Samuel Raj1 over 12 years ago in reply to Biser Gatchev-XID

Hi Biser, Thanks for your reply. I am using the following

Beaglebone Black with ubuntu

regards,

Samuel

0 Samuel Raj1 over 12 years ago in reply to Samuel Raj1

I nailed it down to the following code

while(1)

ioctl (fd, SPI_IOC_MESSAGE(1), &tr);

tr is the buffer so if the buffer is 1000 it will just clock the date in for 1000 bytes. Than 20us delay before the next 1000 bytes.

samuel

Processors forum