75 lines
1.7 KiB
C
75 lines
1.7 KiB
C
/*
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* Copyright (c) 2020 Peter Johanson
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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 <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/keymap.h>
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#include <zmk/handlers.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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{
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u32_t row;
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u32_t column;
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u32_t state;
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};
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struct zmk_kscan_msg_processor
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{
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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(struct device *dev, u32_t row, u32_t column, bool pressed)
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{
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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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{
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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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{
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bool pressed = (ev.state == ZMK_KSCAN_EVENT_STATE_PRESSED);
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zmk_key key = zmk_keymap_keycode_from_position(ev.row, ev.column);
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struct zmk_key_event kev = (struct zmk_key_event){.row = ev.row, .column = ev.column, .key = key, .pressed = pressed};
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LOG_DBG("Row: %d, col: %d, key: %d, pressed: %s\n", ev.row, ev.column, key, (pressed ? "true" : "false"));
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zmk_handle_key(kev);
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}
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}
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int zmk_kscan_init(char *name)
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{
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struct device *dev = device_get_binding(name);
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if (dev == NULL)
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{
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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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