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Hi,
I am stuck at the point where the endpoints at my disposal are not enough to fulfill the functional requirements. I am using lpc3131 from NXP and it provides 3 endpoints ( excluding 1 control EP). But my device communicates at 4 endpoint addresses. So, is there a way that i can share a physical endpoint with two logical pipes so that when host requests data from device's two endpoints say 81 and 85 , but only available being 81 , request at 85 is also serviced by the 81 or 82 or 83( as only 3 are available)?
Show this "absolute" feature of the MCU USB engine to the client. And discuss on a new requirement, which fits to this MCU.
The USB device engine on LPC3131 provides three OUT and three IN endpoints, other than the default one. - These endpoints work at the same time, independently each other. - The endpoint addresses are fixed - OUT: 0x01, 0x02, 0x03, IN: 0x81, 0x82, 0x83 - The available transfer type for each endpoint is defined in the Table 80, "1.5 Fixed endpoint configuration" section on the datasheet.
Tsuneo