| ??? 08/19/06 07:38 Read: times |
#122618 - CDC ACM Responding to: ???'s previous message |
Hello Khaled,
From your description, I suppose you are not so familiar with USB. The modem is supported by CDC ACM (Communication Device Class Abstract Control Model) on USB. When you attack to the host stack, this knowledge is the bottom line. And it is easily confirmed when the phone is connected to a PC. The coding of the embedded host stack requires so much experience on USB. The implementation of CDC ACM host to the SL811 is somewhat harder than HID. Even if you could get an example, you cannot find how to modify it without enough USB background. If you have plenty of development term, at least three to six months, go ahead. I'll tell you what you must do. But if you don't have time, I recommend you to take easier way. If you stick to 8051, use add-on chip like USBwiz. USBwiz http://www.ghielectronics.com/USBwiz.htm If you can use another MCU, Cypress will provide a host MCU with host stack that supports CDC. Tsuneo |
| Topic | Author | Date |
| USB Host + 8051 question | 01/01/70 00:00 | |
| USB Design By Example | 01/01/70 00:00 | |
| CDC ACM | 01/01/70 00:00 | |
| USB Hub | 01/01/70 00:00 | |
| 127 devices regardless of hubs | 01/01/70 00:00 | |
| 89c5131 | 01/01/70 00:00 | |
| there is no '51 USB Host | 01/01/70 00:00 | |
No! | 01/01/70 00:00 | |
| CDC ACM, | 01/01/70 00:00 | |
| OK, the guidance | 01/01/70 00:00 | |
| Hardware USB bus monitor | 01/01/70 00:00 | |
| CATC | 01/01/70 00:00 |