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.master
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5b46031658
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fdce0c9cc0
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@ -197,10 +197,24 @@ void EVENT_USB_Device_WakeUp()
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#endif
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}
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#ifdef CONSOLE_ENABLE
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static bool console_flush = false;
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#define CONSOLE_FLUSH_SET(b) do { \
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uint8_t sreg = SREG; cli(); console_flush = b; SREG = sreg; \
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} while (0)
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// called every 1ms
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void EVENT_USB_Device_StartOfFrame(void)
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{
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static uint8_t count;
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if (++count % 50) return;
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count = 0;
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if (!console_flush) return;
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Console_Task();
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console_flush = false;
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}
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#endif
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/** Event handler for the USB_ConfigurationChanged event.
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* This is fired when the host sets the current configuration of the USB device after enumeration.
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@ -491,6 +505,10 @@ int8_t sendchar(uint8_t c)
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// Because sendchar() is called so many times, waiting each call causes big lag.
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static bool timeouted = false;
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// prevents Console_Task() from running during sendchar() runs.
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// or char will be lost. These two function is mutually exclusive.
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CONSOLE_FLUSH_SET(false);
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if (USB_DeviceState != DEVICE_STATE_Configured)
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return -1;
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@ -524,8 +542,12 @@ int8_t sendchar(uint8_t c)
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Endpoint_Write_8(c);
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// send when bank is full
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if (!Endpoint_IsReadWriteAllowed())
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if (!Endpoint_IsReadWriteAllowed()) {
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while (!(Endpoint_IsINReady()));
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Endpoint_ClearIN();
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} else {
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CONSOLE_FLUSH_SET(true);
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}
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Endpoint_SelectEndpoint(ep);
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return 0;
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