59 lines
1.8 KiB
Markdown
59 lines
1.8 KiB
Markdown
# ESP32 ESP-IDF component for AC dimmer for 115V/400Hz
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## Features
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1. Zero-crossing detection via GPIO interrupt (positive edge) with filtering of spurious interrupts for precise phase-angle control.
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2. TRIAC gate control through ESP-IDF gptimer (1 MHz resolution) with configurable dimming level (0–100%).
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3. Designed for 400 Hz AC mains (1250 us half-period), with timing constants adjustable for other frequencies.
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4. Handle-based API: init/deinit (with full GPIO, ISR and timer cleanup) and start/stop/set/get.
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## Using
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In an existing project, run the following command to install the component:
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```bash
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cd ../your_project/components
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git clone https://github.com/aZholtikov/zh_ac_dimmer
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```
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In the application, add the component:
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```c
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#include "zh_ac_dimmer.h"
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```
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## Example
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```c
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#include "zh_ac_dimmer.h"
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zh_ac_dimmer_handle_t *ac_dimmer_handle = NULL;
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void app_main(void)
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{
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esp_log_level_set("zh_ac_dimmer", ESP_LOG_ERROR);
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zh_ac_dimmer_init_config_t config = ZH_AC_DIMMER_INIT_CONFIG_DEFAULT();
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config.zero_cross_gpio = GPIO_NUM_16;
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config.triac_gpio = GPIO_NUM_17;
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zh_ac_dimmer_init(&config, &ac_dimmer_handle);
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zh_ac_dimmer_start(&ac_dimmer_handle);
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uint8_t value = 0;
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for (uint8_t i = 0; i <= 100; ++i)
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{
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zh_ac_dimmer_set(&ac_dimmer_handle, i);
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zh_ac_dimmer_get(&ac_dimmer_handle, &value);
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printf("Dimmer value: %d.\n", value);
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vTaskDelay(100 / portTICK_PERIOD_MS);
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}
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for (uint8_t i = 100; i > 0; --i)
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{
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zh_ac_dimmer_set(&ac_dimmer_handle, i);
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zh_ac_dimmer_get(&ac_dimmer_handle, &value);
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printf("Dimmer value: %d.\n", value);
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vTaskDelay(100 / portTICK_PERIOD_MS);
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}
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zh_ac_dimmer_stop(&ac_dimmer_handle);
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zh_ac_dimmer_deinit(&ac_dimmer_handle);
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}
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```
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