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rgb-led timing: more exact

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This commit is contained in:
MichaelDvP
2026-10-08 10:32:17 +02:00
parent c290543c7f
commit a61a0cc64c
1 changed files with 6 additions and 6 deletions
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src/core/led.cpp
+6 -6
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@@ -31,17 +31,17 @@ namespace rgb_led {
namespace { namespace {
// durations in 100 ns ticks // durations in 12.5 ns ticks
constexpr uint16_t T0H = 3; // 300 ns constexpr uint16_t T0H = 3.5 * 8; // 350 ns
constexpr uint16_t T0L = 9; // 900 ns constexpr uint16_t T0L = 9 * 8; // 900 ns
constexpr uint16_t T1H = 8; // 800 ns constexpr uint16_t T1H = 8 * 8; // 800 ns
constexpr uint16_t T1L = 6; // 600 ns constexpr uint16_t T1L = 6 * 8; // 600 ns
// rmt_data_t.val layout: duration0:15, level0:1, duration1:15, level1:1 (high then low) // rmt_data_t.val layout: duration0:15, level0:1, duration1:15, level1:1 (high then low)
constexpr uint32_t SYMBOL_0 = T0H | (1UL << 15) | (static_cast<uint32_t>(T0L) << 16); constexpr uint32_t SYMBOL_0 = T0H | (1UL << 15) | (static_cast<uint32_t>(T0L) << 16);
constexpr uint32_t SYMBOL_1 = T1H | (1UL << 15) | (static_cast<uint32_t>(T1L) << 16); constexpr uint32_t SYMBOL_1 = T1H | (1UL << 15) | (static_cast<uint32_t>(T1L) << 16);
constexpr uint32_t RMT_FREQ_HZ = 10000000; // 10 MHz constexpr uint32_t RMT_FREQ_HZ = 80000000; // 80 MHz
constexpr uint32_t RESET_US = 300; constexpr uint32_t RESET_US = 300;
constexpr uint8_t NO_PIN = 0xFF; constexpr uint8_t NO_PIN = 0xFF;
constexpr uint8_t MAX_PINS = 2; // status LED + an RGB analog sensor; the ESP32-C3 only has 2 RMT TX channels constexpr uint8_t MAX_PINS = 2; // status LED + an RGB analog sensor; the ESP32-C3 only has 2 RMT TX channels