Kuldeep Singh Dhaka wrote:
>
> Im facing a weird problem.
> i have a ST uC (FS usb) that send data of ADC (12 bit) at 176Kilo
> samples at bInterval=1; (2bytes for 1 sample)
> ie 352byte isochronous endpoint requested every 1ms
>
> when i request 1000 packets (each of 352 bytes), i received 8byte
> garbage value (mostly 0x00) at the end of the 999th packet (assuming
> packet index start from 0).
> when i request 500 packets (each of 352 bytes), i received 8byte
> garbage value (mostly 0x00) at the end of 499th packet.
> when i request 100 packets (each of 352 bytes), i received 8byte
> garbage value (mostly 0x00) at the end of 99th packet.
> when i request 10 packets (each of 352 bytes) i received 8byte byte
> garbage value (mostly 0x00 | non-zero on offset 1 byte of garbage
> start) at the end of 9th packet. (non-zero garbage value position is
> 352 - 8 + 1).
Can you show us your code? It's difficult to imagine how anything below
your application could cause this.
--
Tim Roberts, t...@probo.com
Providenza & Boekelheide, Inc.
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