From 205bb2829ad039b52fb5769c9cd839f9c4a567c8 Mon Sep 17 00:00:00 2001 From: Oleg Mazurov Date: Wed, 15 May 2013 10:54:33 -0600 Subject: [PATCH] added to configure proposal --- Usb.cpp | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/Usb.cpp b/Usb.cpp index f3a9f31d..5f5335b2 100644 --- a/Usb.cpp +++ b/Usb.cpp @@ -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.