Fixed Quansheng's bug with 8.33khz stepping.

DualTachyon · Sep 19, 2023 · 45e5753 · 45e5753
1 parent 65af9e0
commit 45e5753
Show file tree

Hide file tree

Showing 2 changed files with 19 additions and 0 deletions.
diff --git a/app/app.c b/app/app.c
@@ -382,6 +382,16 @@ void APP_SetFrequencyByStep(VFO_Info_t *pInfo, int8_t Step)
 	uint32_t Frequency;
 
 	Frequency = pInfo->ConfigRX.Frequency + (Step * pInfo->StepFrequency);
+
+	if (pInfo->StepFrequency == 833) {
+		const uint32_t Lower = LowerLimitFrequencyBandTable[pInfo->Band];
+		const uint32_t Delta = Frequency - Lower;
+		const uint32_t Base = (Delta / 2500) * 2500;
+		const uint32_t Index = ((Delta - Base) % 2500) / 833;
+
+		Frequency = Lower + Base + (Index * 833);
+	}
+
 	if (Frequency > UpperLimitFrequencyBandTable[pInfo->Band]) {
 		pInfo->ConfigRX.Frequency = LowerLimitFrequencyBandTable[pInfo->Band];
 	} else if (Frequency < LowerLimitFrequencyBandTable[pInfo->Band]) {

diff --git a/frequencies.c b/frequencies.c
@@ -121,7 +121,16 @@ uint32_t FREQUENCY_FloorToStep(uint32_t Upper, uint32_t Step, uint32_t Lower)
 {
 	uint32_t Index;
 
+	if (Step == 833) {
+		const uint32_t Delta = Upper - Lower;
+		const uint32_t Base = (Delta / 2500) * 2500;
+		const uint32_t Index = ((Delta - Base) % 2500) / 833;
+
+		return Lower + Base + (Index * 833);
+	}
+
 	Index = (Upper - Lower) / Step;
+
 	return Lower + (Step * Index);
 }