hi: 2010/8/3 Alan Stern <stern@xxxxxxxxxxxxxxxxxxx>: > On Tue, 3 Aug 2010, loody wrote: > >> so from your suggestions I have 2 choices: >> 1. porting terminal tools, like minicom. ( I am afraid that i may need >> to cross-compile other libs and stuck on them rather than verify my >> porting.) >> 2. porting perl. ( the same concern above) >> is there any simper way to do so? >> ( I just need send some text to my usb serial device) >> appreciate your kind help :) > > The real problem with serial ports is that you have to make sure they > have the correct settings before you can use them. The most important > setting is the baud rate. Do you have any programs on your embedded > system that can be used to set the baud rate (such as stty)? If not, > you'll have to write a C program to do it. so by ur suggestion, if I can setup my baud rate to the usb terminal device, I can use "echo test > usb terminatl device" to finish my testing? thanks for your kind help, miloody -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html