| ??? 02/19/07 13:34 Read: times |
#133240 - USBExpress v Virtual COM Responding to: ???'s previous message |
Hi David,
SiLabs provides USBExpress in addition to their Virtual COM Port driver. This is a DLL that provides a set of APIs you can invoke without doing any of the normal DCB programming you would do to access the virtual COM port. I have no idea what limits you will run into, but I do know that when you use USBExpress the USB Host does not assign a COM port to the CP2102, so you won't have to worry about the COM9 limitation. When I want to program my µ-controller with FLIP I have to change the PID to the default EA60h. The USB host then loads a virtual COM port driver for the CP2102, which shows up as COM4 on my particular system. Once I have the µ-controller programmed, I switch the PID to EA61h and the USB host removes the virtual COM port driver and loads the USBExpress driver. Sorry I can't be more help, but I've never worked with more than the one unit at a time. Good luck, Joe |
| Topic | Author | Date |
| cp2102 and multiple COM ports | 01/01/70 00:00 | |
| Depends on many things | 01/01/70 00:00 | |
| assuming USB spec is obeyed | 01/01/70 00:00 | |
| Assuming CP2102 works at 480mbps! | 01/01/70 00:00 | |
| Right, but... | 01/01/70 00:00 | |
| 921600 Baud | 01/01/70 00:00 | |
| 115.2 kbps per USB port... | 01/01/70 00:00 | |
| I do not know for sure | 01/01/70 00:00 | |
| USBExpress v Virtual COM | 01/01/70 00:00 | |
| Mindless unwarranted arbitrary restrictions | 01/01/70 00:00 | |
| COM9 Limitation | 01/01/70 00:00 | |
| what I referred to by "cheap method" was | 01/01/70 00:00 | |
| End of wrong stick? | 01/01/70 00:00 | |
| Nothing to do with serial-to-USB | 01/01/70 00:00 | |
| not the list | 01/01/70 00:00 | |
| COM9 Limitation Demystified | 01/01/70 00:00 | |
| quite | 01/01/70 00:00 | |
| Lazy? | 01/01/70 00:00 | |
Thanks guys | 01/01/70 00:00 |