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removed float math and log(), added max bit width

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This commit is contained in:
PaoloTK 2024-08-03 15:54:39 +02:00
parent 5c247d2833
commit 1123d85fd2
2 changed files with 30 additions and 14 deletions
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15
wled00/bus_manager.cpp
View File

@ -40,19 +40,6 @@ uint8_t realtimeBroadcast(uint8_t type, IPAddress client, uint16_t length, byte
#define DEBUG_PRINTF_P(x...)
#endif
// ESP8266 has 1 MHz clock
#ifdef ESP8266
#define CLOCK_FREQUENCY 1e6f
#else
// Use XTAL clock if possible to avoid timer frequency error when setting APB clock < 80 Mhz
// https://github.com/espressif/arduino-esp32/blob/2.0.2/cores/esp32/esp32-hal-ledc.c
#ifdef SOC_LEDC_SUPPORT_XTAL_CLOCK
#define CLOCK_FREQUENCY 40e6f
#else
#define CLOCK_FREQUENCY 80e6f
#endif
#endif
//color mangling macros
#define RGBW32(r,g,b,w) (uint32_t((byte(w) << 24) | (byte(r) << 16) | (byte(g) << 8) | (byte(b))))
#define R(c) (byte((c) >> 16))
@ -398,7 +385,7 @@ BusPwm::BusPwm(BusConfig &bc)
unsigned numPins = NUM_PWM_PINS(bc.type);
_frequency = bc.frequency ? bc.frequency : WLED_PWM_FREQ;
// duty cycle resolution (_depth) can be extracted from this formula: CLOCK_FREQUENCY > _frequency * 2^_depth
_depth = uint8_t(log((float)CLOCK_FREQUENCY / (float)_frequency) / log(2.0));
for (_depth=MAX_BIT_WIDTH; _depth>8; _depth--) if (((uint32_t(CLOCK_FREQUENCY)/_frequency)>>_depth) > 0) break;
#ifdef ESP8266
analogWriteRange((1<<_depth)-1);

29
wled00/const.h
View File

@ -521,6 +521,35 @@
#endif
#endif
#ifndef CLOCK_FREQUENCY
#ifdef ESP8266
// 1 MHz clock
#define CLOCK_FREQUENCY 1e6f
#else
// Use XTAL clock if possible to avoid timer frequency error when setting APB clock < 80 Mhz
// https://github.com/espressif/arduino-esp32/blob/2.0.2/cores/esp32/esp32-hal-ledc.c
#ifdef SOC_LEDC_SUPPORT_XTAL_CLOCK
#define CLOCK_FREQUENCY 40e6f
#else
#define CLOCK_FREQUENCY 80e6f
#endif
#endif
#endif
#ifndef MAX_BIT_WIDTH
#ifdef ESP8266
#define MAX_BIT_WIDTH 10
#else
#ifdef SOC_LEDC_TIMER_BIT_WIDE_NUM
// C6/H2/P4: 20 bit, S2/S3/C2/C3: 14 bit
#define MAX_BIT_WIDTH SOC_LEDC_TIMER_BIT_WIDE_NUM
#else
// ESP32: 32 bit
#define MAX_BIT_WIDTH 20
#endif
#endif
#endif
#define TOUCH_THRESHOLD 32 // limit to recognize a touch, higher value means more sensitive
// Size of buffer for API JSON object (increase for more segments)