Hello

What are the settings of CyConsole for ISO transfer ?

I have the same problem setting for cyConsole is its default setting (has it any effect?)

I am not sure why cypress does not provide simple example for such premitive tests!
 

 Hello,

For an Isochronous transfer, the length has to be a multiple of 8 times the packet size. For example, if the packet size is set to 128, then the length has to be minimum 1024 Bytes . It can also be 2048, 3072, 4096. Note that, in CyConsole, the maximum transfer length is 4096 Bytes.

Please check this out and see if this solves the problem.

Regards,

Gayathri

dear Gayathri

setting packet size  to 512 and lenght to 4096 solves the fail problem.  

but to reach maximum throughput I think we should put packet size to 1024 :

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

db 00H ;; Maximum packet size (LSB)
db 14H ;; Maximum packet size (MSB)  
db 01H ;; Polling interval                          
 

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

and  and in this case

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

EP2CFG = 0x98;

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

how can it be done?

 Hello,

I believe for meeting your throughput condition, you want packet size = 1024Bytes, no: of packets/uF = 3 (from descriptor value that you have assigned: 

db 00H ;; Maximum packet size (LSB) 

db 14H ;; Maximum packet size (MSB)  

Also, EP2ISOINPKTS should be assigned 0x03 for ensuring 3 packets/uF. Now that you have kept it for 3packets/uF, now your packet size/uF = 3 * 1024 = 3072. So, now the length that you need to specify in CyConcole should be 8 times this value, i.e.       8 * 3072 = 24576 Bytes. Sorry for the wrong information about the maximum transfer length in CyConsole to be 4096 Bytes. That is for a differnt context, and not for Isochronous transfers.

Regards,

Gayathri

dear Gayathri

thanks solved