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hdc1000: reduce scope of variables

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This commit is contained in:
Oleg Hahm 2017-03-06 22:32:01 +01:00
parent ced57f8497
commit 5a48c27d96
1 changed files with 2 additions and 3 deletions
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5
drivers/hdc1000/hdc1000.c
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@ -96,7 +96,6 @@ void hdc1000_get_results(hdc1000_t *dev, int16_t *temp, int16_t *hum)
assert(dev); assert(dev);
uint8_t buf[4]; uint8_t buf[4];
uint16_t traw, hraw;
/* first we read the RAW results from the device */ /* first we read the RAW results from the device */
i2c_acquire(dev->p.i2c); i2c_acquire(dev->p.i2c);
@ -105,11 +104,11 @@ void hdc1000_get_results(hdc1000_t *dev, int16_t *temp, int16_t *hum)
/* and finally we convert the values to their physical representation */ /* and finally we convert the values to their physical representation */
if (temp) { if (temp) {
traw = ((uint16_t)buf[0] << 8) | buf[1]; uint16_t traw = ((uint16_t)buf[0] << 8) | buf[1];
*temp = (int16_t)((((int32_t)traw * 16500) >> 16) - 4000); *temp = (int16_t)((((int32_t)traw * 16500) >> 16) - 4000);
} }
if (hum) { if (hum) {
hraw = ((uint16_t)buf[2] << 8) | buf[3]; uint16_t hraw = ((uint16_t)buf[2] << 8) | buf[3];
*hum = (int16_t)(((int32_t)hraw * 10000) >> 16); *hum = (int16_t)(((int32_t)hraw * 10000) >> 16);
} }
} }