net: openthread: priortize usec timer for openthread port.

Przemyslaw Bida · fabiobaltieri · commit 2636bb4e4a3a · 2022-09-12T10:54:56.000Z
This commit prioritizes usec timer over msec. Doing so improves
CSL by helping scheduling timeslots on IEEE 802.15.4 with lower miss
rate.

Signed-off-by: Przemyslaw Bida &lt;przemyslaw.bida@nordicsemi.no&gt;
diff --git a/modules/openthread/platform/alarm.c b/modules/openthread/platform/alarm.c
@@ -58,6 +58,12 @@ void platformAlarmInit(void)
 
 void platformAlarmProcess(otInstance *aInstance)
 {
+#if OPENTHREAD_CONFIG_PLATFORM_USEC_TIMER_ENABLE
+	if (timer_us_fired) {
+		timer_us_fired = false;
+		otPlatAlarmMicroFired(aInstance);
+	}
+#endif
 	if (timer_ms_fired) {
 		timer_ms_fired = false;
 #if defined(CONFIG_OPENTHREAD_DIAG)
@@ -69,12 +75,6 @@ void platformAlarmProcess(otInstance *aInstance)
 			otPlatAlarmMilliFired(aInstance);
 		}
 	}
-#if OPENTHREAD_CONFIG_PLATFORM_USEC_TIMER_ENABLE
-	if (timer_us_fired) {
-		timer_us_fired = false;
-		otPlatAlarmMicroFired(aInstance);
-	}
-#endif
 }
 
 uint32_t otPlatAlarmMilliGetNow(void)

Original file line number	Diff line number	Diff line change
`@@ -58,6 +58,12 @@ void platformAlarmInit(void)`
`58`	`58`
`59`	`59`	`void platformAlarmProcess(otInstance *aInstance)`
`60`	`60`	`{`
	`61`	`+#if OPENTHREAD_CONFIG_PLATFORM_USEC_TIMER_ENABLE`
	`62`	`+ if (timer_us_fired) {`
	`63`	`+ timer_us_fired = false;`
	`64`	`+ otPlatAlarmMicroFired(aInstance);`
	`65`	`+ }`
	`66`	`+#endif`
`61`	`67`	`if (timer_ms_fired) {`
`62`	`68`	`timer_ms_fired = false;`
`63`	`69`	`#if defined(CONFIG_OPENTHREAD_DIAG)`
`@@ -69,12 +75,6 @@ void platformAlarmProcess(otInstance *aInstance)`
`69`	`75`	`otPlatAlarmMilliFired(aInstance);`
`70`	`76`	`}`
`71`	`77`	`}`
`72`		`-#if OPENTHREAD_CONFIG_PLATFORM_USEC_TIMER_ENABLE`
`73`		`- if (timer_us_fired) {`
`74`		`- timer_us_fired = false;`
`75`		`- otPlatAlarmMicroFired(aInstance);`
`76`		`- }`
`77`		`-#endif`
`78`	`78`	`}`
`79`	`79`
`80`	`80`	`uint32_t otPlatAlarmMilliGetNow(void)`