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[FIX] correct I2C Writes for the LM81 Sensor. 

Signed-off-by: Heiko Schocher <hs@denx.de>
This commit is contained in:
Heiko Schocher 2007-01-14 13:35:31 +01:00
parent 6dedf3d49d
commit a443d31410
1 changed files with 4 additions and 3 deletions
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7
dtt/lm81.c
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@ -80,7 +80,7 @@ int dtt_write(int sensor, int reg, int val)
/* /*
* Write value to register. * Write value to register.
*/ */
if (i2c_write(sensor, reg, 1, data, 1) != 0) if (i2c_write(sensor, reg, 1, &data, 1) != 0)
return 1; return 1;
return 0; return 0;
@ -88,6 +88,7 @@ int dtt_write(int sensor, int reg, int val)
#define DTT_MANU 0x3e #define DTT_MANU 0x3e
#define DTT_REV 0x3f #define DTT_REV 0x3f
#define DTT_CONFIG 0x40
#define DTT_ADR 0x48 #define DTT_ADR 0x48
static int _dtt_init(int sensor) static int _dtt_init(int sensor)
@ -98,6 +99,8 @@ static int _dtt_init(int sensor)
if (dtt_write (sensor, DTT_CONFIG, 0x01) < 0) if (dtt_write (sensor, DTT_CONFIG, 0x01) < 0)
return 1; return 1;
/* The LM81 needs 400ms to get the correct values ... */
udelay (400000);
man = dtt_read (sensor, DTT_MANU); man = dtt_read (sensor, DTT_MANU);
if (man != 0x01) if (man != 0x01)
return 1; return 1;
@ -109,8 +112,6 @@ static int _dtt_init(int sensor)
return 1; return 1;
printf ("DTT: Found LM81@%x Rev: %d\n", adr, rev); printf ("DTT: Found LM81@%x Rev: %d\n", adr, rev);
/* The LM81 needs 400ms to get the correct values ... */
udelay (400000);
return 0; return 0;
} /* _dtt_init() */ } /* _dtt_init() */