添加智能灯固件代码

firmware/esp-idf/wumei-smart-firmware/examples/peripherals/rmt/led_strip/main/CMakeLists.txt

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+idf_component_register(SRCS "led_strip_main.c"
+                       INCLUDE_DIRS ".")

firmware/esp-idf/wumei-smart-firmware/examples/peripherals/rmt/led_strip/main/Kconfig.projbuild

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+menu "Example Configuration"
+    config EXAMPLE_RMT_TX_GPIO
+        int "RMT TX GPIO"
+        default 18
+        help
+            Set the GPIO number used for transmitting the RMT signal.
+
+    config EXAMPLE_STRIP_LED_NUMBER
+        int "Number of LEDS in a strip"
+        default 24
+        help
+            A single RGB strip contains several LEDs.
+endmenu

firmware/esp-idf/wumei-smart-firmware/examples/peripherals/rmt/led_strip/main/component.mk

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+#
+# Main Makefile. This is basically the same as a component makefile.
+#
+# (Uses default behaviour of compiling all source files in directory, adding 'include' to include path.)

firmware/esp-idf/wumei-smart-firmware/examples/peripherals/rmt/led_strip/main/led_strip_main.c

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+/* RMT example -- RGB LED Strip
+
+   This example code is in the Public Domain (or CC0 licensed, at your option.)
+
+   Unless required by applicable law or agreed to in writing, this
+   software is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
+   CONDITIONS OF ANY KIND, either express or implied.
+*/
+#include "sdkconfig.h"
+#include "freertos/FreeRTOS.h"
+#include "freertos/task.h"
+#include "esp_log.h"
+#include "driver/rmt.h"
+#include "led_strip.h"
+
+static const char *TAG = "example";
+
+#define RMT_TX_CHANNEL RMT_CHANNEL_0
+
+#define EXAMPLE_CHASE_SPEED_MS (10)
+
+/**
+ * @brief Simple helper function, converting HSV color space to RGB color space
+ *
+ * Wiki: https://en.wikipedia.org/wiki/HSL_and_HSV
+ *
+ */
+void led_strip_hsv2rgb(uint32_t h, uint32_t s, uint32_t v, uint32_t *r, uint32_t *g, uint32_t *b)
+{
+    h %= 360; // h -> [0,360]
+    uint32_t rgb_max = v * 2.55f;
+    uint32_t rgb_min = rgb_max * (100 - s) / 100.0f;
+
+    uint32_t i = h / 60;
+    uint32_t diff = h % 60;
+
+    // RGB adjustment amount by hue
+    uint32_t rgb_adj = (rgb_max - rgb_min) * diff / 60;
+
+    switch (i) {
+    case 0:
+        *r = rgb_max;
+        *g = rgb_min + rgb_adj;
+        *b = rgb_min;
+        break;
+    case 1:
+        *r = rgb_max - rgb_adj;
+        *g = rgb_max;
+        *b = rgb_min;
+        break;
+    case 2:
+        *r = rgb_min;
+        *g = rgb_max;
+        *b = rgb_min + rgb_adj;
+        break;
+    case 3:
+        *r = rgb_min;
+        *g = rgb_max - rgb_adj;
+        *b = rgb_max;
+        break;
+    case 4:
+        *r = rgb_min + rgb_adj;
+        *g = rgb_min;
+        *b = rgb_max;
+        break;
+    default:
+        *r = rgb_max;
+        *g = rgb_min;
+        *b = rgb_max - rgb_adj;
+        break;
+    }
+}
+
+void app_main(void)
+{
+    uint32_t red = 0;
+    uint32_t green = 0;
+    uint32_t blue = 0;
+    uint16_t hue = 0;
+    uint16_t start_rgb = 0;
+
+    rmt_config_t config = RMT_DEFAULT_CONFIG_TX(CONFIG_EXAMPLE_RMT_TX_GPIO, RMT_TX_CHANNEL);
+    // set counter clock to 40MHz
+    config.clk_div = 2;
+
+    ESP_ERROR_CHECK(rmt_config(&config));
+    ESP_ERROR_CHECK(rmt_driver_install(config.channel, 0, 0));
+
+    // install ws2812 driver
+    led_strip_config_t strip_config = LED_STRIP_DEFAULT_CONFIG(CONFIG_EXAMPLE_STRIP_LED_NUMBER, (led_strip_dev_t)config.channel);
+    led_strip_t *strip = led_strip_new_rmt_ws2812(&strip_config);
+    if (!strip) {
+        ESP_LOGE(TAG, "install WS2812 driver failed");
+    }
+    // Clear LED strip (turn off all LEDs)
+    ESP_ERROR_CHECK(strip->clear(strip, 100));
+    // Show simple rainbow chasing pattern
+    ESP_LOGI(TAG, "LED Rainbow Chase Start");
+    while (true) {
+        for (int i = 0; i < 3; i++) {
+            for (int j = i; j < CONFIG_EXAMPLE_STRIP_LED_NUMBER; j += 3) {
+                // Build RGB values
+                hue = j * 360 / CONFIG_EXAMPLE_STRIP_LED_NUMBER + start_rgb;
+                led_strip_hsv2rgb(hue, 100, 100, &red, &green, &blue);
+                // Write RGB values to strip driver
+                ESP_ERROR_CHECK(strip->set_pixel(strip, j, red, green, blue));
+            }
+            // Flush RGB values to LEDs
+            ESP_ERROR_CHECK(strip->refresh(strip, 100));
+            vTaskDelay(pdMS_TO_TICKS(EXAMPLE_CHASE_SPEED_MS));
+            strip->clear(strip, 50);
+            vTaskDelay(pdMS_TO_TICKS(EXAMPLE_CHASE_SPEED_MS));
+        }
+        start_rgb += 60;
+    }
+}