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缩短死区并提高混合光最低亮度

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This commit is contained in:
吴琪
2026-07-27 18:06:20 +08:00
parent 9b1455209d
commit 800473b193
2 changed files with 7 additions and 7 deletions
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project/example/ble/ble_peripheral/app/src/bridge_pwm.c
+4 -4
View File
@@ -16,15 +16,15 @@
* Dual-color output uses one fixed 1 ms frame:
* OFF -> W pulse -> OFF -> C pulse -> OFF to frame end.
* The available OFF time is distributed around both direction changes and
* each W/C transition retains at least 50 us protection.
* each W/C transition retains at least 25 us protection.
* Both non-zero colors therefore produce exactly one pulse per frame (1 kHz).
*/
#define BRIDGE_PWM_SCALE 1000U
#define BRIDGE_PWM_PERIOD 7U
#define BRIDGE_MIX_SCALE 1000U
#define BRIDGE_FRAME_US 1000U
#define BRIDGE_DEADTIME_US 50U
#define BRIDGE_DUAL_ACTIVE_US 900U
#define BRIDGE_DEADTIME_US 25U
#define BRIDGE_DUAL_ACTIVE_US 950U
#define BRIDGE_MIN_DUAL_PULSE_US 15U
#define BRIDGE_TIMER_TICKS_PER_US 16U
@@ -321,7 +321,7 @@ __RAM_CODE void Bridge_Service_1ms(void)
if (cached_w_mix != w_mix || cached_c_mix != c_mix ||
output_mode != BRIDGE_MODE_DUAL) {
/*
* Keep 100 us OFF at maximum dual-color brightness. The OFF time is
* Keep 50 us OFF at maximum dual-color brightness. The OFF time is
* split evenly between W->C and C->W, which both absorbs interrupt
* latency and spreads the two optical pulses across the 1 ms frame.
*/
project/example/ble/ble_peripheral/app/src/light_transition.c
+3 -3
View File
@@ -8,7 +8,7 @@ volatile uint8_t Light_Transition_FadeActive;
#define OUTPUT_SMOOTH_SHIFT 4U
#define LIGHT_OUTPUT_SCALE 1000U
#define BREATH_MIN_OUTPUT (LIGHT_OUTPUT_SCALE / 100U)
#define DUAL_MIN_COMBINED_OUTPUT (LIGHT_OUTPUT_SCALE / 10U)
#define DUAL_MIN_COMBINED_OUTPUT ((LIGHT_OUTPUT_SCALE * 12U) / 100U)
#define DUAL_MIN_STABLE_CHANNEL_OUTPUT 17U
#define POWER_FADE_Q12_MAX 4096U
#define POWER_FADE_ON_TICKS 140U
@@ -225,8 +225,8 @@ void Light_Transition_Task(void)
(LIGHT_OUTPUT_SCALE / 100U) + 2048U) >> 12);
/*
* Mixed light starts from a 10% combined floor. If the weaker direction
* would be below 17/1000 (about 15 us of the 900 us active window), raise
* Mixed light starts from a 12% combined floor. If the weaker direction
* would be below 17/1000 (about 16 us of the 950 us active window), raise
* the combined floor just enough to preserve the requested W:C ratio.
* Ratios that cannot satisfy this even at 100% are treated as single
* color. Single-color output keeps the 1% Gamma minimum.