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Add driver for LM-75 temperature sensor

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git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@3947 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo 2011-09-10 16:20:09 +00:00
parent 5b27f168d1
commit 3a3c6f31fd
1 changed files with 42 additions and 39 deletions
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25
arch/arm/src/stm32/stm32_i2c.c
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@ -934,6 +934,8 @@ int stm32_i2c_process(FAR struct i2c_dev_s *dev, FAR struct i2c_msg_s *msgs, int
/* Check for error status conditions */
if ((status & I2C_SR1_ERRORMASK) != 0)
{
if (status & I2C_SR1_BERR)
{
/* Bus Error */
@ -971,17 +973,6 @@ int stm32_i2c_process(FAR struct i2c_dev_s *dev, FAR struct i2c_msg_s *msgs, int
status_errno = ETIME;
}
/* This is not an error, but should not happen. The BUSY signal can hang,
* however, if there are unhealthy devices on the bus that need to be reset.
*/
else if (status & (I2C_SR2_BUSY << 16))
{
/* I2C Bus is for some reason busy */
status_errno = EBUSY;
}
/* This is not an error and should never happen since SMBus is not enabled */
else if (status & I2C_SR1_SMBALERT)
@ -992,6 +983,18 @@ int stm32_i2c_process(FAR struct i2c_dev_s *dev, FAR struct i2c_msg_s *msgs, int
status_errno = EINTR;
}
}
/* This is not an error, but should not happen. The BUSY signal can hang,
* however, if there are unhealthy devices on the bus that need to be reset.
*/
else if (status & (I2C_SR2_BUSY << 16))
{
/* I2C Bus is for some reason busy */
status_errno = EBUSY;
}
/* Re-enable the FSMC */