Preempt USB interrupt to read bytes in usbtiny#30

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plasticassius wants to merge 18 commits intodcwbrown:masterfrom

plasticassius:preempt

Commits on Oct 30, 2017

#define DW_BIT for debugging
Peter Maivald
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Commits on Oct 31, 2017

make usb interrupt pre-emptable
Peter Maivald
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run dwReadBytes from interrupt
Peter Maivald
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use serial number descriptor to identify usbtiny device
Peter Maivald
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Commits on Nov 5, 2017

fix robustness and check timing
Peter Maivald
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uart use example
Peter Maivald
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usbmon monitoring utility
Peter Maivald
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fix comment
Peter Maivald
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Commits on Nov 9, 2017

save 6 cycles of latency
Peter Maivald
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Commits on Nov 15, 2017

bidirectional uartsoft example
Peter Maivald
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Commits on Nov 16, 2017

better manage lw state
Peter Maivald
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Commits on Nov 17, 2017

dwSendBytes as open drain
Peter Maivald
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Commits on Nov 18, 2017

improve timing
Peter Maivald
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Commits on Nov 20, 2017

fix hang during heavy usb traffic
Peter Maivald
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Commits on Nov 22, 2017

break detection and utilization
Peter Maivald
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Commits on Nov 23, 2017

reestablish connection without switching to dw mode
Peter Maivald
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Commits on Nov 29, 2017

calculate dwBitTime on lw device
Peter Maivald
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Commits on Dec 13, 2017

dwlink
Peter Maivald
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