99 lines
3.0 KiB
C
99 lines
3.0 KiB
C
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// Copyright 2024 Espressif Systems (Shanghai) PTE LTD
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "soc/soc_caps.h"
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#include "esp32-hal-rgb-led.h"
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// Backward compatibility - Deprecated. It will be removed in future releases.
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void neopixelWrite(uint8_t pin, uint8_t red_val, uint8_t green_val, uint8_t blue_val) {
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log_w("neopixelWrite() is deprecated. Use rgbLedWrite().");
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rgbLedWrite(pin, red_val, green_val, blue_val);
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}
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void rgbLedWrite(uint8_t pin, uint8_t red_val, uint8_t green_val, uint8_t blue_val) {
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rgbLedWriteOrdered(pin, RGB_BUILTIN_LED_COLOR_ORDER, red_val, green_val, blue_val);
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}
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void rgbLedWriteOrdered(uint8_t pin, rgb_led_color_order_t order, uint8_t red_val, uint8_t green_val, uint8_t blue_val) {
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#if SOC_RMT_SUPPORTED
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rmt_data_t led_data[24];
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// Verify if the pin used is RGB_BUILTIN and fix GPIO number
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#ifdef RGB_BUILTIN
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pin = pin == RGB_BUILTIN ? pin - SOC_GPIO_PIN_COUNT : pin;
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#endif
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if (!rmtInit(pin, RMT_TX_MODE, RMT_MEM_NUM_BLOCKS_1, 10000000)) {
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log_e("RGB LED driver initialization failed for GPIO%d!", pin);
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return;
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}
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// default WS2812B color order is G, R, B
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int color[3] = {green_val, red_val, blue_val};
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switch (order) {
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case LED_COLOR_ORDER_RGB:
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color[0] = red_val;
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color[1] = green_val;
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color[2] = blue_val;
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break;
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case LED_COLOR_ORDER_BGR:
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color[0] = blue_val;
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color[1] = green_val;
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color[2] = red_val;
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break;
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case LED_COLOR_ORDER_BRG:
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color[0] = blue_val;
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color[1] = red_val;
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color[2] = green_val;
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break;
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case LED_COLOR_ORDER_RBG:
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color[0] = red_val;
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color[1] = blue_val;
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color[2] = green_val;
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break;
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case LED_COLOR_ORDER_GBR:
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color[0] = green_val;
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color[1] = blue_val;
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color[2] = red_val;
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break;
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default: // GRB
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break;
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}
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int i = 0;
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for (int col = 0; col < 3; col++) {
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for (int bit = 0; bit < 8; bit++) {
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if ((color[col] & (1 << (7 - bit)))) {
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// HIGH bit
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led_data[i].level0 = 1; // T1H
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led_data[i].duration0 = 8; // 0.8us
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led_data[i].level1 = 0; // T1L
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led_data[i].duration1 = 4; // 0.4us
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} else {
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// LOW bit
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led_data[i].level0 = 1; // T0H
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led_data[i].duration0 = 4; // 0.4us
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led_data[i].level1 = 0; // T0L
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led_data[i].duration1 = 8; // 0.8us
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}
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i++;
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}
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}
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rmtWrite(pin, led_data, RMT_SYMBOLS_OF(led_data), RMT_WAIT_FOR_EVER);
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#else
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log_e("RMT is not supported on " CONFIG_IDF_TARGET);
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#endif /* SOC_RMT_SUPPORTED */
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}
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