drivers: sensor: shtcx: fix val2 calculation

str4t0m · nashif · commit c9f8b8b78aa4 · 2023-06-15T08:47:30.000-04:00
The calculation of the sensor val2 did not correctly take the sign into
account.

Signed-off-by: Thomas Stranger &lt;thomas.stranger@outlook.com&gt;
diff --git a/drivers/sensor/shtcx/shtcx.c b/drivers/sensor/shtcx/shtcx.c
@@ -53,7 +53,7 @@ static void shtcx_temperature_from_raw(uint16_t raw, struct sensor_value *val)
 	tmp = (int32_t)raw * 175U - (45 << 16);
 	val->val1 = tmp / 0x10000;
 	/* x * 1.000.000 / 65.536 == x * 15625 / 2^10 */
-	val->val2 = ((tmp % 0x10000) * 15625U) / 1024;
+	val->val2 = ((tmp % 0x10000) * 15625) / 1024;
 }
 
 /* val = 100 * sample / (2^16) */

Original file line number	Diff line number	Diff line change
`@@ -53,7 +53,7 @@ static void shtcx_temperature_from_raw(uint16_t raw, struct sensor_value *val)`
`53`	`53`	`tmp = (int32_t)raw * 175U - (45 << 16);`
`54`	`54`	`val->val1 = tmp / 0x10000;`
`55`	`55`	`/* x * 1.000.000 / 65.536 == x * 15625 / 2^10 */`
`56`		`- val->val2 = ((tmp % 0x10000) * 15625U) / 1024;`
	`56`	`+ val->val2 = ((tmp % 0x10000) * 15625) / 1024;`
`57`	`57`	`}`
`58`	`58`
`59`	`59`	`/* val = 100 * sample / (2^16) */`