86 lines
2.3 KiB
C
86 lines
2.3 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 <drivers/sensor.h>
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#include <devicetree.h>
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#include <init.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/sensors.h>
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#include <zmk/event-manager.h>
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#include <zmk/events/sensor-event.h>
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#if ZMK_KEYMAP_HAS_SENSORS
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struct sensors_data_item {
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u8_t sensor_number;
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struct device *dev;
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struct sensor_trigger trigger;
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};
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#define _SENSOR_ITEM(node) {.dev = NULL, .trigger = { .type = SENSOR_TRIG_DELTA, .chan = SENSOR_CHAN_ROTATION } },
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#define SENSOR_ITEM(idx, _) COND_CODE_1(DT_NODE_HAS_STATUS(ZMK_KEYMAP_SENSORS_BY_IDX(idx),okay), (_SENSOR_ITEM(ZMK_KEYMAP_SENSORS_BY_IDX(idx))),())
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static struct sensors_data_item sensors[] = {
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UTIL_LISTIFY(ZMK_KEYMAP_SENSORS_LEN, SENSOR_ITEM, 0)
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};
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static void zmk_sensors_trigger_handler(struct device *dev, struct sensor_trigger *trigger)
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{
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int err;
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struct sensors_data_item * item = CONTAINER_OF(trigger, struct sensors_data_item, trigger);
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struct sensor_event *event;
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LOG_DBG("sensor %d", item->sensor_number);
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err = sensor_sample_fetch(dev);
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if (err) {
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LOG_WRN("Failed to fetch sample from device %d", err);
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return;
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}
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event = new_sensor_event();
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event->sensor_number = item->sensor_number;
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event->sensor = dev;
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ZMK_EVENT_RAISE(event);
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}
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static void zmk_sensors_init_item(const char *node, u8_t i, u8_t abs_i)
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{
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LOG_DBG("Init %s at index %d with sensor_number %d", node, i, abs_i);
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sensors[i].dev = device_get_binding(node);
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sensors[i].sensor_number = abs_i;
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if (!sensors[i].dev) {
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LOG_WRN("Failed to find device for %s", node);
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return;
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}
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sensor_trigger_set(sensors[i].dev, &sensors[i].trigger, zmk_sensors_trigger_handler);
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}
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#define _SENSOR_INIT(node) zmk_sensors_init_item(DT_LABEL(node), local_index++, absolute_index++);
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#define SENSOR_INIT(idx, _i) COND_CODE_1(DT_NODE_HAS_STATUS(ZMK_KEYMAP_SENSORS_BY_IDX(idx),okay), (_SENSOR_INIT(ZMK_KEYMAP_SENSORS_BY_IDX(idx))),(absolute_index++;))
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static int zmk_sensors_init(struct device *_arg)
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{
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int local_index = 0;
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int absolute_index = 0;
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UTIL_LISTIFY(ZMK_KEYMAP_SENSORS_LEN, SENSOR_INIT, 0)
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return 0;
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}
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SYS_INIT(zmk_sensors_init,
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APPLICATION,
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CONFIG_APPLICATION_INIT_PRIORITY);
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#endif /* ZMK_KEYMAP_HAS_SENSORS */ |