mirror of
https://github.com/espressif/esp-matter.git
synced 2026-04-27 19:13:13 +00:00
Chirag Atal
108 lines
3.1 KiB
C
108 lines
3.1 KiB
C
// Copyright 2021 Espressif Systems (Shanghai) CO 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 <driver/ledc.h>
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#include <esp_log.h>
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#include <hal/ledc_types.h>
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#include <led_driver.h>
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static const char *TAG = "led_driver_gpio";
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static bool current_power = false;
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static uint8_t current_brightness = 0;
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led_driver_handle_t led_driver_init(led_driver_config_t *config)
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{
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ESP_LOGI(TAG, "Initializing light driver");
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esp_err_t err = ESP_OK;
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ledc_timer_config_t ledc_timer = {
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.speed_mode = LEDC_LOW_SPEED_MODE, // timer mode
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.duty_resolution = LEDC_TIMER_8_BIT, // resolution of PWM duty
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.timer_num = LEDC_TIMER_1, // timer index
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.freq_hz = 5000, // frequency of PWM signal
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.clk_cfg = LEDC_AUTO_CLK, // Auto select the source clock
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};
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err = ledc_timer_config(&ledc_timer);
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if (err != ESP_OK) {
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ESP_LOGE(TAG, "led_timerc_config failed");
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return NULL;
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}
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ledc_channel_config_t ledc_channel = {
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.gpio_num = config->gpio,
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.speed_mode = LEDC_LOW_SPEED_MODE,
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.channel = config->channel,
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.intr_type = LEDC_INTR_DISABLE,
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.timer_sel = LEDC_TIMER_1,
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.duty = 0,
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.hpoint = 0,
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};
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err = ledc_channel_config(&ledc_channel);
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if (err != ESP_OK) {
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ESP_LOGE(TAG, "ledc_channel_config failed");
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}
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/* Using (channel + 1) as handle */
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return (led_driver_handle_t)(config->channel + 1);
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}
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esp_err_t led_driver_set_power(led_driver_handle_t handle, bool power)
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{
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current_power = power;
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return led_driver_set_brightness(handle, current_brightness);
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}
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esp_err_t led_driver_set_brightness(led_driver_handle_t handle, uint8_t brightness)
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{
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esp_err_t err;
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int channel = (int)handle - 1;
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if (channel < 0) {
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ESP_LOGE(TAG, "Invalid handle");
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return ESP_ERR_INVALID_ARG;
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}
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if (brightness != 0) {
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current_brightness = brightness;
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}
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if (!current_power) {
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brightness = 0;
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}
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err = ledc_set_duty(LEDC_LOW_SPEED_MODE, channel, brightness);
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if (err != ESP_OK) {
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ESP_LOGE(TAG, "ledc_set_duty failed");
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}
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err = ledc_update_duty(LEDC_LOW_SPEED_MODE, channel);
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if (err != ESP_OK) {
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ESP_LOGE(TAG, "ledc_update_duty failed");
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}
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return err;
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}
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esp_err_t led_driver_set_hue(led_driver_handle_t handle, uint16_t hue)
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{
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return ESP_ERR_NOT_SUPPORTED;
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}
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esp_err_t led_driver_set_saturation(led_driver_handle_t handle, uint8_t saturation)
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{
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return ESP_ERR_NOT_SUPPORTED;
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}
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esp_err_t led_driver_set_temperature(led_driver_handle_t handle, uint32_t temperature)
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{
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return ESP_ERR_NOT_SUPPORTED;
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}
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