Dear Graeme, In message <calbutckq_bgpozquozzqnu01v41y+uwo8ellnqse15d30p5...@mail.gmail.com> you wrote: > > Well, I have the feeling than an console API might be in order. The way > U-Boot is structured at the moment, serial I/O is kind of taken for > granted to 'just exist' and nobody needs to really be self-aware that > they use it...
Indeed. All we need is a working set of srdin/stdout/stderr. Keep in mind that anything couldbe attached - not only a serial line. > ... The same cannot be said of users of USB and Network - > Net is a good example - all 'users' of net call NetLoop() which does > an eth_init()...do stuff...eth_halt() Driver API... > So maybe a serial API which 'users' must 'wake up' and 'sleep'... Arghhh... > - console_configure() - Set parameters (port, baud rate etc) > - console_wake() - Prepare the console (could be serial, USB, netconsole) > - console_flush() - Throw away any buffered characters > - console_getc(), console_putc(), console_tstc() - Self explainatory > - console_sleep() - Shut the console down (send XOFF, turn of USB etc) Forget it. We will not have a separate and completely non-standard "serial API". If anything gets changed here, then in the context of a general driver API cleanup, or at least based on a design for such a generic driver API. > UART like your SPI example. The command line interpreter calls > console_sleep() to release the serial UART resource before the command > which uses the multiplexed device wakes that device, does it's thing and > shuts the device down before returning to the command line interpreter > which wakes up the serial UART... Sorry, but that's crappy by design. Best regards, Wolfgang Denk -- DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: w...@denx.de Marriage is the sole cause of divorce. _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
