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lufa: Fix console flush #223 

Old console sent unneeded empty data every one milli sencond.
After this fix console flushes endpoint data bank every 50ms only when needed.
This commit is contained in:
tmk 2015-05-22 18:10:28 +09:00
parent 5b46031658
commit fdce0c9cc0
1 changed files with 23 additions and 1 deletions
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24
tmk_core/protocol/lufa/lufa.c
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@ -197,10 +197,24 @@ void EVENT_USB_Device_WakeUp()
#endif
}
#ifdef CONSOLE_ENABLE
static bool console_flush = false;
#define CONSOLE_FLUSH_SET(b) do { \
uint8_t sreg = SREG; cli(); console_flush = b; SREG = sreg; \
} while (0)
// called every 1ms
void EVENT_USB_Device_StartOfFrame(void)
{
static uint8_t count;
if (++count % 50) return;
count = 0;
if (!console_flush) return;
Console_Task();
console_flush = false;
}
#endif
/** Event handler for the USB_ConfigurationChanged event.
* This is fired when the host sets the current configuration of the USB device after enumeration.
@ -491,6 +505,10 @@ int8_t sendchar(uint8_t c)
// Because sendchar() is called so many times, waiting each call causes big lag.
static bool timeouted = false;
// prevents Console_Task() from running during sendchar() runs.
// or char will be lost. These two function is mutually exclusive.
CONSOLE_FLUSH_SET(false);
if (USB_DeviceState != DEVICE_STATE_Configured)
return -1;
@ -524,8 +542,12 @@ int8_t sendchar(uint8_t c)
Endpoint_Write_8(c);
// send when bank is full
if (!Endpoint_IsReadWriteAllowed())
if (!Endpoint_IsReadWriteAllowed()) {
while (!(Endpoint_IsINReady()));
Endpoint_ClearIN();
} else {
CONSOLE_FLUSH_SET(true);
}
Endpoint_SelectEndpoint(ep);
return 0;