| ??? 02/23/11 23:29 Read: times |
#181274 - Help in micro 87c51 to USB HID with UM232R |
Hi everyone,
I´m making a keyboard using Micro 87c51, but i have a problem that i dont know how to make the connection from TxD port(80c57) to UM232R(RxD) with the protocol USB HID. i´m using the pinnacle compiler(assembler language) and i know that transmit serial using SBUF(8 bit), but i dont know if i need transmit other things to comply with the USBHID protocol?? In others forums talk about pic18XX family and using the devicedescriptor, hid_descriptor... but my project is with micro 87c51.. other Question: I need the descriptors using UM232R?? .. right now i capture the key pressed and move to the accumulator and next i need to transmit to PC using USB: mov a,@R0 Please if you have some example!!... Thank you very much! |
| Topic | Author | Date |
| Help in micro 87c51 to USB HID with UM232R | 01/01/70 00:00 | |
| Completely the wrong interface!! | 01/01/70 00:00 | |
| There may be a way.....but | 01/01/70 00:00 | |
| Other ways | 01/01/70 00:00 | |
| Dual PS/2 to USB Converters | 01/01/70 00:00 | |
| UM232R | 01/01/70 00:00 | |
| is impossible to use the USB HID protocol with 87c51? | 01/01/70 00:00 | |
Depends what you mean by "with" | 01/01/70 00:00 |