|
Hi Group. I've been developing USB code for 5509/5509A using CSL and CCS 2.20.00. So far everything worked fine. Recently I upgraded to CCS 2.20.18 and started to observe USB problems for interrupt driven implementation. Setup A 1) Cold reset. 2) Loading code is built with csl5509x.lib 2.20.18. 3) USB fails. Setup B 1) Cold reset. 2) Loading code built with csl5509x.lib 2.20.00 3) USB works. 4) Hot reset. 5) Loading code built with csl5509x.lib 2.20.18 6) USB works. Probably some register initialization is missing. I rebuilt 2.20.18 lib with 2.20.00 usb code. No result. I am still grepping and diffing. Any other clue folks? Michael. PS USB polling implementation works like charm. PPS. All other conditions are the same (C versions and headers). PPPS. Same results on 5509 and 5509a. M. |
|
|
USB oddity
Started by ●September 12, 2003
Reply by ●September 13, 20032003-09-13
