PSAS/ lpcisoc/ LPCUSB Isochronous Status

Latest status

18 December 2008

Working on multiple endpoint reliability.

'node-usb' project on psas gitweb.

olimex lpc2148 prototype board programmed for flight computer communications development.

25 November 2008

Isochronous DMA has a heartbeat. 1MB/s transfer rate.

8 November 2008

Possible confirmation of race condition during USB Frame interrupt
with isochronous mode between RD_EN and USBRxPLen on lpc2148. Test
case developed and under review. Fix is to add a 'nop' to delay
reading from USBRxPLen for one cpu cycle.