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Merge branch 'xxxajk' of github.com:felis/USB_Host_Shield_2.0 into xxxajk

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Andrew J. Kroll 2013-05-16 16:44:21 -04:00
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Usb.cpp
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@ -567,6 +567,16 @@ uint8_t USB::DefaultAddressing(uint8_t parent, uint8_t port, bool lowspeed) {
* This is broken. We need to enumerate differently.
* It causes major problems with several devices if detected in an unexpected order.
*
*
* Oleg - I wouldn't do anything before the newly connected device is considered sane.
* i.e.(delays are not indicated for brevity):
* 1. reset
* 2. GetDevDescr();
* 3a. If ACK, continue with allocating address, addressing, etc.
* 3b. Else reset again, count resets, stop at some number (5?).
* 4. When max.number of resets is reached, toggle power/fail
* If desired, this could be modified by performing two resets with GetDevDescr() in the middle - however, from my experience, if a device answers to GDD()
* it doesn't need to be reset again
* New steps proposal:
* 1: get address pool instance. exit on fail
* 2: pUsb->getDevDescr(0, 0, constBufSize, (uint8_t*)buf). exit on fail.