Hi, i am trying to use a Linux running embedded PC with built-it RS-485 port as a master to control one slave device. My problem is the usual one, i can not figure out how to perform an automatic RTS toggle. I.e. to send data to 485 and after the last byte was sent, quickly switch to the read mode (but not from my code in the user space). The Linux kernel is 2.6.32 and an automatic RTS toggle is not natively 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). Does anyone has experience with RS-485 in embedded real-time Linux PCs? The chip used is Winbond W83627UHG and looking into its documentation, it is not obvious to me how to handle the RTS toggle properly. I can write and read to/from 485 but i have to toggle RTS by hand from my code, which is not what i want to do and it does not quite work with the slave device either. Cheers, Tomas -- 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
