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Discussion Groups | TMS320C55x | USB oddity
Technical discussions about the TI C55x DSPs (including the c5501, c5502, c5503, c5507, c5509, c5510 and OMAP5910).
USB oddity - ch1n00k71 - Sep 12 11:20:00 2003
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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. |
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Start your Android Ice Cream Sandwich development on TI's AM35x Sitara ARM Cortex-A8 processor today.
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IRQ_plug bug. (Re: USB oddity) - ch1n00k71 - Sep 13 6:53:00 2003
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The CSL CCS 2.20.18 version of irq_pluga.asm is older than original CCS 2.20.00 one. Replace to avoid potential problems with all IRQ implementations or do not use IRQ_plug at all. Have Fun. Michael |
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