Commit ced86a9

committed

Added Long USB RecvControl call for >64 bytes

1 parent 0b97e57 commit ced86a9Copy full SHA for ced86a9

File tree

+21

-1

lines changed

+21

-1

lines changed

Lines changed: 1 addition & 0 deletions

Original file line number	Diff line number	Diff line change
`@@ -193,6 +193,7 @@ bool CDC_Setup(USBSetup& setup);`
`193`	`193`
`194`	`194`	`int USB_SendControl(uint8_t flags, const void* d, int len);`
`195`	`195`	`int USB_RecvControl(void* d, int len);`
	`196`	`+int USB_RecvControlLong(void* d, int len);`
`196`	`197`
`197`	`198`	`uint8_t USB_Available(uint8_t ep);`
`198`	`199`	`uint8_t USB_SendSpace(uint8_t ep);`

Lines changed: 20 additions & 1 deletion

Original file line number	Diff line number	Diff line change
`@@ -426,7 +426,7 @@ static bool USB_SendStringDescriptor(const u8*string_P, u8 string_len, uint8_t f`
`426`	`426`
`427`	`427`	`// Does not timeout or cross fifo boundaries`
`428`	`428`	`// Will only work for transfers <= 64 bytes`
`429`		`-// TODO`
	`429`	`+// Use USB_RecvControlLong for longer transfers`
`430`	`430`	`int USB_RecvControl(void* d, int len)`
`431`	`431`	`{`
`432`	`432`	`WaitOUT();`
`@@ -435,6 +435,25 @@ int USB_RecvControl(void* d, int len)`
`435`	`435`	`return len;`
`436`	`436`	`}`
`437`	`437`
	`438`	`+// Does not timeout or cross fifo boundaries`
	`439`	`+int USB_RecvControlLong(void* d, int len)`
	`440`	`+{`
	`441`	`+ auto bytesleft = len;`
	`442`	`+ while(bytesleft > 0)`
	`443`	`+ {`
	`444`	`+ // Dont receive more than the USB Control EP has to offer`
	`445`	`+ // Use fixed 64 because control EP always have 64 bytes even on 16u2.`
	`446`	`+ auto recvLength = bytesleft;`
	`447`	`+ if(recvLength > 64){`
	`448`	`+ recvLength = 64;`
	`449`	`+ }`
	`450`	`+`
	`451`	`+ // Write data to fit to the beginning of the array`
	`452`	`+ bytesleft -= USB_RecvControl((u8*)d + len - bytesleft, recvLength);`
	`453`	`+ }`
	`454`	`+ return len;`
	`455`	`+}`
	`456`	`+`
`438`	`457`	`static u8 SendInterfaces()`
`439`	`458`	`{`
`440`	`459`	`u8 interfaces = 0;`

Comments

(0)