73 lines
3.2 KiB
C
73 lines
3.2 KiB
C
/*
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* Copyright 2023 Fabian Blatz <fabianblatz@gmail.com>
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#define DT_DRV_COMPAT zephyr_lvgl_encoder_input
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#include "lvgl_common_input.h"
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#include "lvgl_encoder_input.h"
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#include <zephyr/logging/log.h>
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LOG_MODULE_DECLARE(lvgl, CONFIG_LV_Z_LOG_LEVEL);
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struct lvgl_encoder_input_config {
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struct lvgl_common_input_config common_config; /* Needs to be first member */
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int rotation_input_code;
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int button_input_code;
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};
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static void lvgl_encoder_process_event(const struct device *dev, struct input_event *evt)
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{
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struct lvgl_common_input_data *data = dev->data;
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const struct lvgl_encoder_input_config *cfg = dev->config;
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if (evt->code == cfg->rotation_input_code) {
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data->pending_event.enc_diff = evt->value;
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} else if (evt->code == cfg->button_input_code) {
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data->pending_event.state = evt->value ? LV_INDEV_STATE_PR : LV_INDEV_STATE_REL;
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} else {
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LOG_DBG("Ignored input event: %u", evt->code);
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return;
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}
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if (k_msgq_put(cfg->common_config.event_msgq, &data->pending_event, K_NO_WAIT) != 0) {
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LOG_WRN("Could not put input data into queue");
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}
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}
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int lvgl_encoder_input_init(const struct device *dev)
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{
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return lvgl_input_register_driver(LV_INDEV_TYPE_ENCODER, dev);
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}
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#define BUTTON_CODE(inst) DT_INST_PROP_OR(inst, button_input_code, -1)
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#define ROTATION_CODE(inst) DT_INST_PROP(inst, rotation_input_code)
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#define ASSERT_PROPERTIES(inst) \
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BUILD_ASSERT(IN_RANGE(ROTATION_CODE(inst), 0, 65536), \
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"Property rotation-input-code needs to be between 0 and 65536."); \
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BUILD_ASSERT(!DT_INST_NODE_HAS_PROP(inst, button_input_code) || \
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IN_RANGE(BUTTON_CODE(inst), 0, 65536), \
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"Property button-input-code needs to be between 0 and 65536."); \
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BUILD_ASSERT(ROTATION_CODE(inst) != BUTTON_CODE(inst), \
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"Property rotation-input-code and button-input-code should not be equal.")
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#define LVGL_ENCODER_INPUT_DEFINE(inst) \
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ASSERT_PROPERTIES(inst); \
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LVGL_INPUT_DEFINE(inst, encoder, CONFIG_LV_Z_ENCODER_INPUT_MSGQ_COUNT, \
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lvgl_encoder_process_event); \
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static const struct lvgl_encoder_input_config lvgl_encoder_input_config_##inst = { \
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.common_config.event_msgq = &LVGL_INPUT_EVENT_MSGQ(inst, encoder), \
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.rotation_input_code = ROTATION_CODE(inst), \
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.button_input_code = BUTTON_CODE(inst), \
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}; \
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static struct lvgl_common_input_data lvgl_common_input_data_##inst; \
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DEVICE_DT_INST_DEFINE(inst, NULL, NULL, &lvgl_common_input_data_##inst, \
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&lvgl_encoder_input_config_##inst, POST_KERNEL, \
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CONFIG_INPUT_INIT_PRIORITY, NULL);
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DT_INST_FOREACH_STATUS_OKAY(LVGL_ENCODER_INPUT_DEFINE)
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