| ??? 07/30/09 09:19 Read: times |
#168024 - A question and an approach? Responding to: ???'s previous message |
Christoph Franck said:
Are these two different questions? Good question! The first seems to be "How do I connect a peripheral which has only a USB port to a microcontroller which only has an UART?" Correct - that is the basic problem. (and it seems like one that will become increasingly common) while the second is "How do I talk to USB device other than mass-storage or HID with a microcontroller that does have USB host functionality?" I suppose that's in anticipation of the obvious answer to the first part; viz: "get a chip with a USB host". What I'm saying is that I realise that plenty of chips are available with USB hosts and, therefore, can do this in theory. But my point is that there seems to be no support in how to do it in practice. The answer to the second can probably be found by digging for the appropriate communications protocol. Maybe there's something on the other device classes on www.usb.org? True, but I'd like to avoid that! I'd like to find something that makes it "as easy as" the many mass-storage and HID examples that are widely available. This thing is, this is just a means to an end (capturing the data) - not the end in itself. In that sense, it is a bit of a "gimme code" - except that I am prepared to pay for an off-the-shelf solution if one can be found. Therefore I have ordered one of the USBizi things mentioned by Grant: http://www.8052.com/forumchat/read/168004 |
| Topic | Author | Date |
| USB-to-Serial, but "backwards" | 01/01/70 00:00 | |
| USBWiz | 01/01/70 00:00 | |
| Good one - thanks! | 01/01/70 00:00 | |
| Similar to the FTDI thing | 01/01/70 00:00 | |
| Vinculum CDC | 01/01/70 00:00 | |
| Two different questions? | 01/01/70 00:00 | |
| A question and an approach? | 01/01/70 00:00 | |
| So you are looking for a CDC device driver? | 01/01/70 00:00 | |
| Basically, yes! | 01/01/70 00:00 | |
| .Net? | 01/01/70 00:00 | |
| Microsoft's .NET Micro Framework | 01/01/70 00:00 | |
| Micro$oft | 01/01/70 00:00 | |
| So Bill sells us an OS for LPC's | 01/01/70 00:00 | |
| Miniscule requirements | 01/01/70 00:00 | |
| as miniscule memory as 64kB RAM. | 01/01/70 00:00 | |
| Also >= 256kB flash | 01/01/70 00:00 | |
| "They" ? | 01/01/70 00:00 | |
Yes, they=Microsoft | 01/01/70 00:00 | |
| Atmel AT90USBKey (AVR) | 01/01/70 00:00 |