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Merge pull request #2279 from cmaglie/fix-leo-upload-osx10.9.4 

Fix for upload problems on Arduino Leonardo (and derivatives) on OSX 10.9
This commit is contained in:
Cristian Maglie 2014-09-10 12:58:10 +02:00
parent f02d637a89 1d0f3510f6
commit 0b094167de
1 changed files with 21 additions and 17 deletions
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38
cores/arduino/CDC.cpp
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@ -80,35 +80,39 @@ bool WEAK CDC_Setup(Setup& setup)
if (CDC_SET_LINE_CODING == r)
{
USB_RecvControl((void*)&_usbLineInfo,7);
return true;
}
if (CDC_SET_CONTROL_LINE_STATE == r)
{
_usbLineInfo.lineState = setup.wValueL;
}
if (CDC_SET_LINE_CODING == r || CDC_SET_CONTROL_LINE_STATE == r)
{
// auto-reset into the bootloader is triggered when the port, already
// open at 1200 bps, is closed. this is the signal to start the watchdog
// with a relatively long period so it can finish housekeeping tasks
// like servicing endpoints before the sketch ends
if (1200 == _usbLineInfo.dwDTERate) {
// We check DTR state to determine if host port is open (bit 0 of lineState).
if ((_usbLineInfo.lineState & 0x01) == 0) {
*(uint16_t *)0x0800 = 0x7777;
wdt_enable(WDTO_120MS);
} else {
// Most OSs do some intermediate steps when configuring ports and DTR can
// twiggle more than once before stabilizing.
// To avoid spurious resets we set the watchdog to 250ms and eventually
// cancel if DTR goes back high.
wdt_disable();
wdt_reset();
*(uint16_t *)0x0800 = 0x0;
}
// We check DTR state to determine if host port is open (bit 0 of lineState).
if (1200 == _usbLineInfo.dwDTERate && (_usbLineInfo.lineState & 0x01) == 0)
{
*(uint16_t *)0x0800 = 0x7777;
wdt_enable(WDTO_120MS);
}
else
{
// Most OSs do some intermediate steps when configuring ports and DTR can
// twiggle more than once before stabilizing.
// To avoid spurious resets we set the watchdog to 250ms and eventually
// cancel if DTR goes back high.
wdt_disable();
wdt_reset();
*(uint16_t *)0x0800 = 0x0;
}
return true;
}
return true;
}
return false;
}