9os

Experimental kernel using plan9 ideas for embedded device
git clone git://git.simple-cc.org/9os
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dummyuart.c (1264B)

      1 #include <os9/os9.h>
      2 
      3 #include "dev.h"
      4 #include "uart.h"
      5 
      6 #include "../../libc/syscall.h"
      7 
      8 static int
      9 setbauds(Uart *up, long rate)
     10 {
     11 	return 0;
     12 }
     13 
     14 static void
     15 dummyuartinit(Uart *up, Attr *attr)
     16 {
     17 	return;
     18 }
     19 
     20 static int
     21 dummyuartread(Uart *up, void *buf, int n)
     22 {
     23 	return _read(0, buf, n);
     24 }
     25 
     26 static int
     27 dummyuartwrite(Uart *up, void *buf, int n)
     28 {
     29 	return _write(1, buf, n);
     30 }
     31 
     32 static int
     33 dummyuartsignal(Uart *up, int sign, int val)
     34 {
     35 	return 1;
     36 }
     37 
     38 static int
     39 dummyuartflush(Uart *up)
     40 {
     41 	return 0;
     42 }
     43 
     44 static int
     45 dummyuartfifo(Uart *up, int trigger)
     46 {
     47 	return 0;
     48 }
     49 
     50 static int
     51 dummyuartbits(Uart *up, int nbits)
     52 {
     53 	return 0;
     54 }
     55 
     56 static int
     57 dummyuartparity(Uart *up, int mode)
     58 {
     59 	return 0;
     60 }
     61 
     62 static int
     63 dummyuartstop(Uart *up, int nbits)
     64 {
     65 	return 0;
     66 }
     67 
     68 static int
     69 dummyuartobey(Uart *up, int signal, int ena)
     70 {
     71 	return 0;
     72 }
     73 
     74 static int
     75 dummyuartstatus(Uart *up, struct uartstat *st)
     76 {
     77 	return 0;
     78 }
     79 
     80 Uartphy dummyuartphy = {
     81 	.name = "dummyuart",
     82 	.init = dummyuartinit,
     83 	.setbauds = setbauds,
     84 	.read = dummyuartread,
     85 	.write = dummyuartwrite,
     86 	.signal = dummyuartsignal,
     87 	.flush = dummyuartflush,
     88 	.setfifo = dummyuartfifo,
     89 	.numbits = dummyuartbits,
     90 	.parity = dummyuartparity,
     91 	.bitstop = dummyuartstop,
     92 	.obey  = dummyuartobey,
     93 	.status = dummyuartstatus,
     94 };