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serial : this patch need a real-life test

This commit is contained in:
tth 2018-12-13 18:43:49 +01:00
parent c1652b68e2
commit d75dba1954
2 changed files with 18 additions and 11 deletions
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3
.gitignore vendored
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@ -1,7 +1,8 @@
a.out a.out
*.o *.o
fake-values fake-values
essai serial/t essai
serial/t
doc/*.toc doc/*.log doc/*.aux doc/*.pdf doc/*.toc doc/*.log doc/*.aux doc/*.pdf

26
serial/serial.c
View File

@ -146,21 +146,27 @@ retval = retval < 0 ? -1 : retval;
switch (retval) { switch (retval) {
case -1: case -1:
fprintf(stderr, "omg ?\n"); break; fprintf(stderr, "omg ?\n");
byte = -1;
break;
case 0: case 0:
fprintf(stderr, "timeout\n"); break; fprintf(stderr, "timeout\n");
byte = -99;
break;
default: default:
return -99; if (retval==fd) {
read(fd, &byte, 1);
fprintf(stderr, "got 0x%02x\n", byte);
}
else {
fprintf(stderr, "%d bad fd ?\n", retval);
byte = -3;
}
break;
} }
return byte;
return -3;
} }
/* -------------------------------------------------------------------- */ /* -------------------------------------------------------------------- */