75 lines
2.2 KiB
C
75 lines
2.2 KiB
C
/*
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* Copyright (c) 2020 The ZMK Contributors
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*
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* SPDX-License-Identifier: MIT
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*/
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#include <zephyr.h>
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#include <device.h>
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#include <bluetooth/addr.h>
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#include <drivers/kscan.h>
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#include <logging/log.h>
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LOG_MODULE_DECLARE(zmk, CONFIG_ZMK_LOG_LEVEL);
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#include <zmk/matrix_transform.h>
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#include <zmk/event_manager.h>
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#include <zmk/events/position_state_changed.h>
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#define ZMK_KSCAN_EVENT_STATE_PRESSED 0
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#define ZMK_KSCAN_EVENT_STATE_RELEASED 1
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struct zmk_kscan_event {
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uint32_t row;
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uint32_t column;
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uint32_t state;
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};
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struct zmk_kscan_msg_processor {
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struct k_work work;
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} msg_processor;
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K_MSGQ_DEFINE(zmk_kscan_msgq, sizeof(struct zmk_kscan_event), CONFIG_ZMK_KSCAN_EVENT_QUEUE_SIZE, 4);
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static void zmk_kscan_callback(const struct device *dev, uint32_t row, uint32_t column,
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bool pressed) {
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struct zmk_kscan_event ev = {
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.row = row,
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.column = column,
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.state = (pressed ? ZMK_KSCAN_EVENT_STATE_PRESSED : ZMK_KSCAN_EVENT_STATE_RELEASED)};
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k_msgq_put(&zmk_kscan_msgq, &ev, K_NO_WAIT);
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k_work_submit(&msg_processor.work);
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}
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void zmk_kscan_process_msgq(struct k_work *item) {
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struct zmk_kscan_event ev;
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while (k_msgq_get(&zmk_kscan_msgq, &ev, K_NO_WAIT) == 0) {
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bool pressed = (ev.state == ZMK_KSCAN_EVENT_STATE_PRESSED);
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uint32_t position = zmk_matrix_transform_row_column_to_position(ev.row, ev.column);
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LOG_DBG("Row: %d, col: %d, position: %d, pressed: %s", ev.row, ev.column, position,
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(pressed ? "true" : "false"));
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ZMK_EVENT_RAISE(new_zmk_position_state_changed(
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(struct zmk_position_state_changed){.source = ZMK_POSITION_STATE_CHANGE_SOURCE_LOCAL,
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.state = pressed,
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.position = position,
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.timestamp = k_uptime_get()}));
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}
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}
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int zmk_kscan_init(char *name) {
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const struct device *dev = device_get_binding(name);
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if (dev == NULL) {
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LOG_ERR("Failed to get the KSCAN device");
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return -EINVAL;
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}
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k_work_init(&msg_processor.work, zmk_kscan_process_msgq);
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kscan_config(dev, zmk_kscan_callback);
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kscan_enable_callback(dev);
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return 0;
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}
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