Hi all, I am trying to write a device driver for two MAX3085Es (a kind of half-duplex RS-485 transceiver, more product info can be found at http://www.maxim-ic.com/quick_view2.cfm/qv_pk/2338) which are connected to S3C2410's UART1 (TXD1 & RXD1), EINT6 (External INTerrupt) and UART2 (TXD2 & RXD2), EINT7 respectively. According to the schematic, my intention is: when there is data arrives on the RS-485 serial line, an external interrupt (EINT6 or EINT7) would be triggered, and an user space application (process) would be informed by the interrupt service routine, and then the application could access the data using a specific device node under /dev (for example, /dev/max3085e). So my questions are as follows: 1) How to write a device driver for MAX3085E according to my scenario? 2) Further, how could the application be informed by interrupt service routine? I am a Linux device driver newbie, any hints would be highly appreciated, thanks in advance. -- Best regards, WANG Zhen ---- Only the paranoid survive. -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to ecartis@xxxxxxxxxxxx Please read the FAQ at http://kernelnewbies.org/FAQ
