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Commits
eaa16b31
Commit
eaa16b31
authored
Nov 24, 2011
by
Manohar Vanga
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simulation: fix temperature readings of ds18b20 chip
Signed-off-by:
Manohar Vanga
<
manohar.vanga@cern.ch
>
parent
30a807fe
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2 changed files
with
5 additions
and
4 deletions
+5
-4
test1w.c
simulation/test/test1w.c
+2
-1
wb_onewire.c
simulation/wb_onewire.c
+3
-3
No files found.
simulation/test/test1w.c
View file @
eaa16b31
...
...
@@ -37,7 +37,8 @@ int main(int argc, char *argv[])
return
ret
;
}
printf
(
"Temp: %08x
\n
"
,
a
.
temp
/
16
.
0
);
printf
(
"Temp RAW: %08x
\n
"
,
a
.
temp
);
printf
(
"Temp: %08f
\n
"
,
a
.
temp
/
16
.
0
);
close
(
fd
);
return
0
;
...
...
simulation/wb_onewire.c
View file @
eaa16b31
...
...
@@ -135,7 +135,7 @@ void ds18b20_read_serial(struct wb_onewire_dev *dev, int port, uint8_t *sbuf)
wb_onewire_reset
(
dev
,
port
);
wb_onewire_writebyte
(
dev
,
port
,
0x33
);
sbuf
[
0
]
=
wb_onewire_readbyte
(
dev
,
port
);
for
(
i
=
6
;
i
>=
1
;
i
--
)
for
(
i
=
1
;
i
<=
6
;
i
++
)
sbuf
[
i
]
=
wb_onewire_readbyte
(
dev
,
port
);
sbuf
[
7
]
=
wb_onewire_readbyte
(
dev
,
port
);
}
...
...
@@ -158,7 +158,7 @@ int ds18b20_read_temp(struct wb_onewire_dev *dev, int port, uint8_t *serial)
int
temp
;
ds18b20_access
(
dev
,
port
,
serial
);
printk
(
"serial: "
);
for
(
i
=
0
;
i
<
8
;
i
++
)
for
(
i
=
7
;
i
>=
0
;
i
--
)
printk
(
"%02x "
,
serial
[
i
]);
printk
(
"
\n
"
);
wb_onewire_writebyte
(
dev
,
port
,
0x44
);
...
...
@@ -168,7 +168,7 @@ int ds18b20_read_temp(struct wb_onewire_dev *dev, int port, uint8_t *serial)
wb_onewire_writebyte
(
dev
,
port
,
0xbe
);
wb_onewire_readblock
(
dev
,
port
,
data
,
9
);
printk
(
"data: "
);
for
(
i
=
0
;
i
<
9
;
i
++
)
for
(
i
=
8
;
i
>=
0
;
i
--
)
printk
(
"%2x "
,
data
[
i
]);
printk
(
"
\n
"
);
temp
=
(
data
[
1
]
<<
8
)
|
data
[
0
];
...
...
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