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| author | cpldcpu <cpldcpu@gmail.com> | 2015-01-12 00:46:06 +0100 |
|---|---|---|
| committer | cpldcpu <cpldcpu@gmail.com> | 2015-01-12 00:46:06 +0100 |
| commit | 42f2d8cc38064c67a9478826f563f5110c3848ee (patch) | |
| tree | 2add26052b2d424d9efaa5848b654b16f0e3d4cf /firmware/osccalASM.S | |
| parent | 80419704f68bf0783c5de63a6a4b9d89b45235c7 (diff) | |
| download | micronucleus-42f2d8cc38064c67a9478826f563f5110c3848ee.tar.gz micronucleus-42f2d8cc38064c67a9478826f563f5110c3848ee.tar.bz2 micronucleus-42f2d8cc38064c67a9478826f563f5110c3848ee.zip | |
#ENABLE_UNSAFE_OPTIMIZATIONS
Added new global flag to enable unsafe optimizations:
This will disable several safety features in microncleus to save around
40 more bytes
Disabled features:
* Stack pointer and SREG initialization in CRT
* Client side reset vector patching
* USB collision detection. Micronucleus will not work reliability with
hubs if this is disabled.
See t85_aggressive configuration for usage examples.
Diffstat (limited to 'firmware/osccalASM.S')
| -rw-r--r-- | firmware/osccalASM.S | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/firmware/osccalASM.S b/firmware/osccalASM.S index fa26dc4..57730bf 100644 --- a/firmware/osccalASM.S +++ b/firmware/osccalASM.S @@ -147,6 +147,9 @@ usbCOWaitLoop: sbic USBIN, USBMINUS ;[2] rjmp usbCOWaitLoop ;[3] + ; This section of code deals with traffic from other USB devices on the same hub. + ; If this code is excluded, micronucleus may only work when it is connected to a dedicated USB port +#ifndef ENABLE_UNSAFE_OPTIMIZATIONS sbis USBIN, USBPLUS ; ignore frame if data is present rjmp usbCOnotdata @@ -161,7 +164,8 @@ usbCOWaitNoData2: sbis USBIN, USBMINUS ; wait for D- go to high rjmp usbCOWaitNoData2 rjmp usbCOLoopNoCal - +#endif + usbCOnotdata: sbrs cnt16H, 7 ;delay overflow? rjmp usbCOclocktoolow |