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Merge pull request #352 from jflinchbaugh/main

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fix #322: scale bandscope for any number of samples
This commit is contained in:
Armel FAUVEAU
2025-01-08 22:21:42 +01:00
committed by GitHub
parent 9309cfaba7 85bdc60c5b
commit bd0911f749
1 changed files with 8 additions and 1 deletions
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9
app/spectrum.c
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@@ -870,13 +870,20 @@ uint8_t Rssi2Y(uint16_t rssi)
#ifdef ENABLE_FEAT_F4HWN_SPECTRUM
static void DrawSpectrum()
{
uint16_t steps = GetStepsCount();
// max bars at 128 to correctly draw larger numbers of samples
uint8_t bars = (steps > 128) ? 128 : steps;
// shift to center bar on freq marker
uint8_t shift_graph = 64 / steps + 1;
uint8_t ox = 0;
for (uint8_t i = 0; i < 128; ++i)
{
uint16_t rssi = rssiHistory[i >> settings.stepsCount];
if (rssi != RSSI_MAX_VALUE)
{
uint8_t x = i * 128 / GetStepsCount();
// stretch bars to fill the screen width
uint8_t x = i * 128 / bars + shift_graph;
for (uint8_t xx = ox; xx < x; xx++)
{
DrawVLine(Rssi2Y(rssi), DrawingEndY, xx, true);