69 lines
2.2 KiB
Markdown
69 lines
2.2 KiB
Markdown
# ESP32 ESP-IDF and ESP8266 RTOS SDK component for rotary encoder
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## Tested on
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1. [ESP8266 RTOS_SDK v3.4](https://docs.espressif.com/projects/esp8266-rtos-sdk/en/latest/index.html#)
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2. [ESP32 ESP-IDF v5.4](https://docs.espressif.com/projects/esp-idf/en/release-v5.4/esp32/index.html)
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## Features
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1. Support some encoders on one device.
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## Note
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1. Encoder pins must be pull up to the VCC via 0.1 µf capacitors.
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## Using
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In an existing project, run the following command to install the components:
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```text
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cd ../your_project/components
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git clone http://git.zh.com.ru/alexey.zholtikov/zh_encoder
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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_encoder.h"
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```
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## Examples
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One encoder on device:
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```c
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#include "zh_encoder.h"
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zh_encoder_handle_t encoder_handle = {0};
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void zh_encoder_event_handler(void *arg, esp_event_base_t event_base, int32_t event_id, void *event_data);
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void app_main(void)
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{
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esp_log_level_set("zh_encoder", ESP_LOG_NONE); // For ESP8266 first enable "Component config -> Log output -> Enable log set level" via menuconfig.
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esp_event_loop_create_default();
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#ifdef CONFIG_IDF_TARGET_ESP8266
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esp_event_handler_register(ZH_ENCODER, ESP_EVENT_ANY_ID, &zh_encoder_event_handler, NULL);
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#else
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esp_event_handler_instance_register(ZH_ENCODER, ESP_EVENT_ANY_ID, &zh_encoder_event_handler, NULL, NULL);
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#endif
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zh_encoder_init_config_t encoder_init_config = ZH_ENCODER_INIT_CONFIG_DEFAULT();
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encoder_init_config.a_gpio_number = GPIO_NUM_27;
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encoder_init_config.b_gpio_number = GPIO_NUM_26;
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// encoder_init_config.encoder_min_value = -10; // Just for example.
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// encoder_init_config.encoder_max_value = 10; // Just for example.
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// encoder_init_config.encoder_step = 0.1; // Just for example.
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encoder_init_config.encoder_number = 1;
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zh_encoder_init(&encoder_init_config, &encoder_handle);
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// zh_encoder_set(&encoder_handle, 5); // Just for example.
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// zh_encoder_reset(&encoder_handle); // Just for example.
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}
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void zh_encoder_event_handler(void *arg, esp_event_base_t event_base, int32_t event_id, void *event_data)
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{
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zh_encoder_event_on_isr_t *event = event_data;
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printf("Encoder number %d position %.2f.\n", event->encoder_number, event->encoder_position);
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}
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```
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