Commit bbd3ae2

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Merge pull request #4864 from sandeepmistry/avr-usb-tx

Subtract one from USB_EP_SIZE in USB_SendSpace

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Lines changed: 3 additions & 1 deletion

Original file line number	Diff line number	Diff line change
`@@ -255,7 +255,9 @@ u8 USB_SendSpace(u8 ep)`
`255`	`255`	`LockEP lock(ep);`
`256`	`256`	`if (!ReadWriteAllowed())`
`257`	`257`	`return 0;`
`258`		`- return USB_EP_SIZE - FifoByteCount();`
	`258`	`+ // subtract 1 from the EP size to never send a full packet,`
	`259`	`+ // this avoids dealing with ZLP's in USB_Send`
	`260`	`+ return USB_EP_SIZE - 1 - FifoByteCount();`
`259`	`261`	`}`
`260`	`262`
`261`	`263`	`// Blocking Send of data to an endpoint`

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