Unless i have overlooked something, i do not see how to toggle the automatic RTS mode from W83627UHG's datasheet. Have you found it? Regarding 2.6.38+ drivers, Atmel supports RS485 on the hardware level and Etrax is handling the RTS toggling directly from the driver. I guess this is what i will finally have to do, i.e. to toggle RTS from the driver myself. I am surprised that the RTS toggling issue for RS485 in Linux is around for quite a while. Cheers, Tomas On Tue, Nov 29, 2011 at 12:57 PM, Wolfram Sang <w.sang@xxxxxxxxxxxxxx> wrote: >> supported. Googling this issue around, i found a couple of suggestions >> but no solution (except drivers for Atmel and Etrax since kernel >> 2.6.38). > > Judging from the datasheet, the device can do hardware based RS485, > nice. So look at those drivers you mentioned above how they handle the > RS485-related IOCTLs and adapt the bits for the hardware configuration. > Should be more fun with a newer kernel, but I think it is doable. > > Regards, > > Wolfram > > -- > Pengutronix e.K. | Wolfram Sang | > Industrial Linux Solutions | http://www.pengutronix.de/ | > > -----BEGIN PGP SIGNATURE----- > Version: GnuPG v1.4.10 (GNU/Linux) > > iEYEARECAAYFAk7VHQgACgkQD27XaX1/VRsO2wCfXOsvPoOtw8QV8YzkKHocp6K8 > lYEAnR/OExYTbdEtEqT8Dgl3Y/TCra83 > =0ZuI > -----END PGP SIGNATURE----- > > -- To unsubscribe from this list: send the line "unsubscribe linux-serial" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
