fix lora us915 logic to step into 500 kHz range

iamemilio · deadprogram · commit 4edb771c5b16 · 2023-10-26T08:32:04.000+02:00
diff --git a/lora/lorawan/region/us915.go b/lora/lorawan/region/us915.go
@@ -32,22 +32,21 @@ func (c *ChannelUS) Next() bool {
 		freq, ok := stepFrequency125(c.frequency)
 		if ok {
 			c.frequency = freq
-			return true
 		} else {
 			c.frequency = lora.Mhz_903_0
-			return true
+			c.bandwidth = lora.Bandwidth_500_0
 		}
 	case lora.Bandwidth_500_0:
 		freq, ok := stepFrequency500(c.frequency)
 		if ok {
 			c.frequency = freq
-			return true
 		} else {
+			// there are no more frequencies to check after sweeping all 8 500 kHz channels
 			return false
 		}
 	}
 
-	return false
+	return true
 }
 
 func stepFrequency125(freq uint32) (uint32, bool) {

Original file line number	Diff line number	Diff line change
`@@ -32,22 +32,21 @@ func (c *ChannelUS) Next() bool {`
`32`	`32`	`freq, ok := stepFrequency125(c.frequency)`
`33`	`33`	`if ok {`
`34`	`34`	`c.frequency = freq`
`35`		`- return true`
`36`	`35`	`} else {`
`37`	`36`	`c.frequency = lora.Mhz_903_0`
`38`		`- return true`
	`37`	`+ c.bandwidth = lora.Bandwidth_500_0`
`39`	`38`	`}`
`40`	`39`	`case lora.Bandwidth_500_0:`
`41`	`40`	`freq, ok := stepFrequency500(c.frequency)`
`42`	`41`	`if ok {`
`43`	`42`	`c.frequency = freq`
`44`		`- return true`
`45`	`43`	`} else {`
	`44`	`+ // there are no more frequencies to check after sweeping all 8 500 kHz channels`
`46`	`45`	`return false`
`47`	`46`	`}`
`48`	`47`	`}`
`49`	`48`
`50`		`- return false`
	`49`	`+ return true`
`51`	`50`	`}`
`52`	`51`
`53`	`52`	`func stepFrequency125(freq uint32) (uint32, bool) {`