New kernel drivers and device implementation updates (#561)
- Added modular device support and devicetree bindings for ILI9341, ILI9488, CST816S, XPT2046, and GPIO button input, updating several board configurations for display/touch/backlight/keyboard/battery. - Added a setting to control deprecated HAL usage (device property + Kconfig).
This commit is contained in:
Ken Van Hoeylandt
committed by
GitHub
GitHub
parent
50c0a14a93
commit
fa4a6e255c
@@ -0,0 +1,11 @@
|
||||
cmake_minimum_required(VERSION 3.20)
|
||||
|
||||
include("${CMAKE_CURRENT_LIST_DIR}/../../Buildscripts/module.cmake")
|
||||
|
||||
file(GLOB_RECURSE SOURCE_FILES "source/*.c*")
|
||||
|
||||
tactility_add_module(button-control-module
|
||||
SRCS ${SOURCE_FILES}
|
||||
INCLUDE_DIRS include/
|
||||
REQUIRES TactilityKernel platform-esp32 lvgl driver
|
||||
)
|
||||
@@ -0,0 +1,195 @@
|
||||
Apache License
|
||||
==============
|
||||
|
||||
_Version 2.0, January 2004_
|
||||
_<<http://www.apache.org/licenses/>>_
|
||||
|
||||
### Terms and Conditions for use, reproduction, and distribution
|
||||
|
||||
#### 1. Definitions
|
||||
|
||||
“License” shall mean the terms and conditions for use, reproduction, and
|
||||
distribution as defined by Sections 1 through 9 of this document.
|
||||
|
||||
“Licensor” shall mean the copyright owner or entity authorized by the copyright
|
||||
owner that is granting the License.
|
||||
|
||||
“Legal Entity” shall mean the union of the acting entity and all other entities
|
||||
that control, are controlled by, or are under common control with that entity.
|
||||
For the purposes of this definition, “control” means **(i)** the power, direct or
|
||||
indirect, to cause the direction or management of such entity, whether by
|
||||
contract or otherwise, or **(ii)** ownership of fifty percent (50%) or more of the
|
||||
outstanding shares, or **(iii)** beneficial ownership of such entity.
|
||||
|
||||
“You” (or “Your”) shall mean an individual or Legal Entity exercising
|
||||
permissions granted by this License.
|
||||
|
||||
“Source” form shall mean the preferred form for making modifications, including
|
||||
but not limited to software source code, documentation source, and configuration
|
||||
files.
|
||||
|
||||
“Object” form shall mean any form resulting from mechanical transformation or
|
||||
translation of a Source form, including but not limited to compiled object code,
|
||||
generated documentation, and conversions to other media types.
|
||||
|
||||
“Work” shall mean the work of authorship, whether in Source or Object form, made
|
||||
available under the License, as indicated by a copyright notice that is included
|
||||
in or attached to the work (an example is provided in the Appendix below).
|
||||
|
||||
“Derivative Works” shall mean any work, whether in Source or Object form, that
|
||||
is based on (or derived from) the Work and for which the editorial revisions,
|
||||
annotations, elaborations, or other modifications represent, as a whole, an
|
||||
original work of authorship. For the purposes of this License, Derivative Works
|
||||
shall not include works that remain separable from, or merely link (or bind by
|
||||
name) to the interfaces of, the Work and Derivative Works thereof.
|
||||
|
||||
“Contribution” shall mean any work of authorship, including the original version
|
||||
of the Work and any modifications or additions to that Work or Derivative Works
|
||||
thereof, that is intentionally submitted to Licensor for inclusion in the Work
|
||||
by the copyright owner or by an individual or Legal Entity authorized to submit
|
||||
on behalf of the copyright owner. For the purposes of this definition,
|
||||
“submitted” means any form of electronic, verbal, or written communication sent
|
||||
to the Licensor or its representatives, including but not limited to
|
||||
communication on electronic mailing lists, source code control systems, and
|
||||
issue tracking systems that are managed by, or on behalf of, the Licensor for
|
||||
the purpose of discussing and improving the Work, but excluding communication
|
||||
that is conspicuously marked or otherwise designated in writing by the copyright
|
||||
owner as “Not a Contribution.”
|
||||
|
||||
“Contributor” shall mean Licensor and any individual or Legal Entity on behalf
|
||||
of whom a Contribution has been received by Licensor and subsequently
|
||||
incorporated within the Work.
|
||||
|
||||
#### 2. Grant of Copyright License
|
||||
|
||||
Subject to the terms and conditions of this License, each Contributor hereby
|
||||
grants to You a perpetual, worldwide, non-exclusive, no-charge, royalty-free,
|
||||
irrevocable copyright license to reproduce, prepare Derivative Works of,
|
||||
publicly display, publicly perform, sublicense, and distribute the Work and such
|
||||
Derivative Works in Source or Object form.
|
||||
|
||||
#### 3. Grant of Patent License
|
||||
|
||||
Subject to the terms and conditions of this License, each Contributor hereby
|
||||
grants to You a perpetual, worldwide, non-exclusive, no-charge, royalty-free,
|
||||
irrevocable (except as stated in this section) patent license to make, have
|
||||
made, use, offer to sell, sell, import, and otherwise transfer the Work, where
|
||||
such license applies only to those patent claims licensable by such Contributor
|
||||
that are necessarily infringed by their Contribution(s) alone or by combination
|
||||
of their Contribution(s) with the Work to which such Contribution(s) was
|
||||
submitted. If You institute patent litigation against any entity (including a
|
||||
cross-claim or counterclaim in a lawsuit) alleging that the Work or a
|
||||
Contribution incorporated within the Work constitutes direct or contributory
|
||||
patent infringement, then any patent licenses granted to You under this License
|
||||
for that Work shall terminate as of the date such litigation is filed.
|
||||
|
||||
#### 4. Redistribution
|
||||
|
||||
You may reproduce and distribute copies of the Work or Derivative Works thereof
|
||||
in any medium, with or without modifications, and in Source or Object form,
|
||||
provided that You meet the following conditions:
|
||||
|
||||
* **(a)** You must give any other recipients of the Work or Derivative Works a copy of
|
||||
this License; and
|
||||
* **(b)** You must cause any modified files to carry prominent notices stating that You
|
||||
changed the files; and
|
||||
* **(c)** You must retain, in the Source form of any Derivative Works that You distribute,
|
||||
all copyright, patent, trademark, and attribution notices from the Source form
|
||||
of the Work, excluding those notices that do not pertain to any part of the
|
||||
Derivative Works; and
|
||||
* **(d)** If the Work includes a “NOTICE” text file as part of its distribution, then any
|
||||
Derivative Works that You distribute must include a readable copy of the
|
||||
attribution notices contained within such NOTICE file, excluding those notices
|
||||
that do not pertain to any part of the Derivative Works, in at least one of the
|
||||
following places: within a NOTICE text file distributed as part of the
|
||||
Derivative Works; within the Source form or documentation, if provided along
|
||||
with the Derivative Works; or, within a display generated by the Derivative
|
||||
Works, if and wherever such third-party notices normally appear. The contents of
|
||||
the NOTICE file are for informational purposes only and do not modify the
|
||||
License. You may add Your own attribution notices within Derivative Works that
|
||||
You distribute, alongside or as an addendum to the NOTICE text from the Work,
|
||||
provided that such additional attribution notices cannot be construed as
|
||||
modifying the License.
|
||||
|
||||
You may add Your own copyright statement to Your modifications and may provide
|
||||
additional or different license terms and conditions for use, reproduction, or
|
||||
distribution of Your modifications, or for any such Derivative Works as a whole,
|
||||
provided Your use, reproduction, and distribution of the Work otherwise complies
|
||||
with the conditions stated in this License.
|
||||
|
||||
#### 5. Submission of Contributions
|
||||
|
||||
Unless You explicitly state otherwise, any Contribution intentionally submitted
|
||||
for inclusion in the Work by You to the Licensor shall be under the terms and
|
||||
conditions of this License, without any additional terms or conditions.
|
||||
Notwithstanding the above, nothing herein shall supersede or modify the terms of
|
||||
any separate license agreement you may have executed with Licensor regarding
|
||||
such Contributions.
|
||||
|
||||
#### 6. Trademarks
|
||||
|
||||
This License does not grant permission to use the trade names, trademarks,
|
||||
service marks, or product names of the Licensor, except as required for
|
||||
reasonable and customary use in describing the origin of the Work and
|
||||
reproducing the content of the NOTICE file.
|
||||
|
||||
#### 7. Disclaimer of Warranty
|
||||
|
||||
Unless required by applicable law or agreed to in writing, Licensor provides the
|
||||
Work (and each Contributor provides its Contributions) on an “AS IS” BASIS,
|
||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied,
|
||||
including, without limitation, any warranties or conditions of TITLE,
|
||||
NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A PARTICULAR PURPOSE. You are
|
||||
solely responsible for determining the appropriateness of using or
|
||||
redistributing the Work and assume any risks associated with Your exercise of
|
||||
permissions under this License.
|
||||
|
||||
#### 8. Limitation of Liability
|
||||
|
||||
In no event and under no legal theory, whether in tort (including negligence),
|
||||
contract, or otherwise, unless required by applicable law (such as deliberate
|
||||
and grossly negligent acts) or agreed to in writing, shall any Contributor be
|
||||
liable to You for damages, including any direct, indirect, special, incidental,
|
||||
or consequential damages of any character arising as a result of this License or
|
||||
out of the use or inability to use the Work (including but not limited to
|
||||
damages for loss of goodwill, work stoppage, computer failure or malfunction, or
|
||||
any and all other commercial damages or losses), even if such Contributor has
|
||||
been advised of the possibility of such damages.
|
||||
|
||||
#### 9. Accepting Warranty or Additional Liability
|
||||
|
||||
While redistributing the Work or Derivative Works thereof, You may choose to
|
||||
offer, and charge a fee for, acceptance of support, warranty, indemnity, or
|
||||
other liability obligations and/or rights consistent with this License. However,
|
||||
in accepting such obligations, You may act only on Your own behalf and on Your
|
||||
sole responsibility, not on behalf of any other Contributor, and only if You
|
||||
agree to indemnify, defend, and hold each Contributor harmless for any liability
|
||||
incurred by, or claims asserted against, such Contributor by reason of your
|
||||
accepting any such warranty or additional liability.
|
||||
|
||||
_END OF TERMS AND CONDITIONS_
|
||||
|
||||
### APPENDIX: How to apply the Apache License to your work
|
||||
|
||||
To apply the Apache License to your work, attach the following boilerplate
|
||||
notice, with the fields enclosed by brackets `[]` replaced with your own
|
||||
identifying information. (Don't include the brackets!) The text should be
|
||||
enclosed in the appropriate comment syntax for the file format. We also
|
||||
recommend that a file or class name and description of purpose be included on
|
||||
the same “printed page” as the copyright notice for easier identification within
|
||||
third-party archives.
|
||||
|
||||
Copyright [yyyy] [name of copyright owner]
|
||||
|
||||
Licensed under the Apache License, Version 2.0 (the "License");
|
||||
you may not use this file except in compliance with the License.
|
||||
You may obtain a copy of the License at
|
||||
|
||||
http://www.apache.org/licenses/LICENSE-2.0
|
||||
|
||||
Unless required by applicable law or agreed to in writing, software
|
||||
distributed under the License is distributed on an "AS IS" BASIS,
|
||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
See the License for the specific language governing permissions and
|
||||
limitations under the License.
|
||||
|
||||
@@ -0,0 +1,30 @@
|
||||
# Button Control
|
||||
|
||||
Kernel driver for navigating apps with 1 or 2 GPIO buttons. Kernel-driver counterpart to
|
||||
`Drivers/ButtonControl`, exposing a `KEYBOARD_TYPE` device (`tactility/drivers/keyboard.h`)
|
||||
instead of an LVGL encoder indev.
|
||||
|
||||
Devicetree binding: `tactility,button-control` (see `bindings/tactility,button-control.yaml`).
|
||||
|
||||
## Modes
|
||||
|
||||
- **One-button** (`pin-secondary` absent): short press = `LV_KEY_NEXT`, long press = `LV_KEY_ENTER`.
|
||||
- **Two-button** (`pin-secondary` present): primary short = `LV_KEY_ENTER`, primary long =
|
||||
`LV_KEY_ESC`, secondary short = `LV_KEY_NEXT`, secondary long = `LV_KEY_PREV`.
|
||||
|
||||
Short vs. long press is only decided when the button is released, by comparing the hold
|
||||
duration against `long-press-ms` - not at the moment it's pressed.
|
||||
|
||||
## Example
|
||||
|
||||
```dts
|
||||
buttons {
|
||||
compatible = "tactility,button-control";
|
||||
pin-primary = <&gpio0 37 GPIO_FLAG_NONE>;
|
||||
pin-secondary = <&gpio0 39 GPIO_FLAG_NONE>;
|
||||
};
|
||||
```
|
||||
|
||||
## License
|
||||
|
||||
[Apache License Version 2.0](LICENSE-Apache-2.0.md)
|
||||
@@ -0,0 +1,36 @@
|
||||
description: >
|
||||
GPIO button(s) that emulate UI navigation keys, for boards with only 1 or 2 physical
|
||||
buttons instead of a full keyboard or touchscreen. Exposes a KEYBOARD_TYPE device: each
|
||||
button's short/long press is translated to an LVGL navigation key, decided once the
|
||||
button is released (so a long press is only recognized after release, matching how long
|
||||
a button was actually held).
|
||||
|
||||
compatible: "tactility,button-control"
|
||||
|
||||
properties:
|
||||
pin-primary:
|
||||
type: phandles
|
||||
required: true
|
||||
description: >
|
||||
Primary button GPIO pin. One-button mode (pin-secondary absent): short press = select
|
||||
next, long press = press/enter. Two-button mode (pin-secondary present): short press =
|
||||
press/enter, long press = close app.
|
||||
pin-secondary:
|
||||
type: phandles
|
||||
default: GPIO_PIN_SPEC_NONE
|
||||
description: >
|
||||
Optional secondary button GPIO pin. When present, enables two-button mode: short press
|
||||
= select next, long press = select previous. When absent, the device runs in
|
||||
one-button mode (see pin-primary).
|
||||
active-low:
|
||||
type: boolean
|
||||
default: true
|
||||
description: Whether a pressed button reads as a logic low level
|
||||
debounce-ms:
|
||||
type: int
|
||||
default: 20
|
||||
description: Minimum time between recognized level changes, for software debouncing
|
||||
long-press-ms:
|
||||
type: int
|
||||
default: 500
|
||||
description: Minimum hold duration (from press to release) recognized as a long press
|
||||
@@ -0,0 +1,3 @@
|
||||
dependencies:
|
||||
- TactilityKernel
|
||||
bindings: bindings
|
||||
@@ -0,0 +1,7 @@
|
||||
// SPDX-License-Identifier: Apache-2.0
|
||||
#pragma once
|
||||
|
||||
#include <tactility/bindings/bindings.h>
|
||||
#include <drivers/button_control.h>
|
||||
|
||||
DEFINE_DEVICETREE(button_control, struct ButtonControlConfig)
|
||||
@@ -0,0 +1,14 @@
|
||||
// SPDX-License-Identifier: Apache-2.0
|
||||
#pragma once
|
||||
|
||||
#include <tactility/module.h>
|
||||
|
||||
#ifdef __cplusplus
|
||||
extern "C" {
|
||||
#endif
|
||||
|
||||
extern struct Module button_control_module;
|
||||
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif
|
||||
@@ -0,0 +1,25 @@
|
||||
// SPDX-License-Identifier: Apache-2.0
|
||||
#pragma once
|
||||
|
||||
#ifdef __cplusplus
|
||||
extern "C" {
|
||||
#endif
|
||||
|
||||
#include <stdint.h>
|
||||
#include <stdbool.h>
|
||||
|
||||
#include <tactility/drivers/gpio.h>
|
||||
|
||||
struct ButtonControlConfig {
|
||||
struct GpioPinSpec pin_primary;
|
||||
// GPIO_PIN_SPEC_NONE selects one-button mode; see the binding description for the
|
||||
// resulting short/long press key mapping in each mode.
|
||||
struct GpioPinSpec pin_secondary;
|
||||
bool active_low;
|
||||
uint32_t debounce_ms;
|
||||
uint32_t long_press_ms;
|
||||
};
|
||||
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif
|
||||
@@ -0,0 +1,226 @@
|
||||
// SPDX-License-Identifier: Apache-2.0
|
||||
#include <drivers/button_control.h>
|
||||
#include <button_control_module.h>
|
||||
|
||||
#include <tactility/device.h>
|
||||
#include <tactility/driver.h>
|
||||
#include <tactility/drivers/gpio_controller.h>
|
||||
#include <tactility/drivers/keyboard.h>
|
||||
#include <tactility/error.h>
|
||||
#include <tactility/log.h>
|
||||
#include <tactility/time.h>
|
||||
|
||||
#include <lvgl.h>
|
||||
|
||||
#include <cstdlib>
|
||||
|
||||
#define TAG "ButtonControl"
|
||||
#define GET_CONFIG(device) (static_cast<const ButtonControlConfig*>((device)->config))
|
||||
|
||||
// Worst case: both buttons complete a short/long press gesture (press + release, 2 events each)
|
||||
// within the same read_key() polling interval.
|
||||
constexpr auto BUTTON_CONTROL_PENDING_CAPACITY = 4;
|
||||
|
||||
struct ButtonControlPendingEvent {
|
||||
uint32_t key;
|
||||
bool pressed;
|
||||
};
|
||||
|
||||
struct ButtonControlButtonState {
|
||||
GpioDescriptor* descriptor;
|
||||
bool in_use;
|
||||
bool debounced_pressed;
|
||||
uint32_t press_start_time;
|
||||
uint32_t last_change_time;
|
||||
uint32_t short_press_key;
|
||||
uint32_t long_press_key;
|
||||
};
|
||||
|
||||
struct ButtonControlInternal {
|
||||
ButtonControlButtonState primary;
|
||||
ButtonControlButtonState secondary;
|
||||
ButtonControlPendingEvent pending[BUTTON_CONTROL_PENDING_CAPACITY];
|
||||
uint8_t pending_head;
|
||||
uint8_t pending_count;
|
||||
};
|
||||
|
||||
static void push_pending(ButtonControlInternal* internal, uint32_t key, bool pressed) {
|
||||
if (internal->pending_count >= BUTTON_CONTROL_PENDING_CAPACITY) {
|
||||
LOG_W(TAG, "Pending event queue full, dropping event");
|
||||
return;
|
||||
}
|
||||
uint8_t tail = (internal->pending_head + internal->pending_count) % BUTTON_CONTROL_PENDING_CAPACITY;
|
||||
internal->pending[tail] = { .key = key, .pressed = pressed };
|
||||
internal->pending_count++;
|
||||
}
|
||||
|
||||
static bool pop_pending(ButtonControlInternal* internal, ButtonControlPendingEvent* out_event) {
|
||||
if (internal->pending_count == 0) {
|
||||
return false;
|
||||
}
|
||||
*out_event = internal->pending[internal->pending_head];
|
||||
internal->pending_head = (internal->pending_head + 1) % BUTTON_CONTROL_PENDING_CAPACITY;
|
||||
internal->pending_count--;
|
||||
return true;
|
||||
}
|
||||
|
||||
// region Driver lifecycle
|
||||
|
||||
static error_t acquire_button(const GpioPinSpec& pin, uint32_t short_press_key, uint32_t long_press_key, ButtonControlButtonState* out_state) {
|
||||
if (pin.gpio_controller == nullptr) {
|
||||
*out_state = {};
|
||||
return ERROR_NONE;
|
||||
}
|
||||
|
||||
auto* descriptor = gpio_descriptor_acquire(pin.gpio_controller, pin.pin, GPIO_OWNER_GPIO);
|
||||
if (descriptor == nullptr) {
|
||||
LOG_E(TAG, "Failed to acquire GPIO descriptor");
|
||||
return ERROR_RESOURCE;
|
||||
}
|
||||
|
||||
if (gpio_descriptor_set_flags(descriptor, pin.flags | GPIO_FLAG_DIRECTION_INPUT) != ERROR_NONE) {
|
||||
LOG_E(TAG, "Failed to configure GPIO as input");
|
||||
gpio_descriptor_release(descriptor);
|
||||
return ERROR_RESOURCE;
|
||||
}
|
||||
|
||||
*out_state = {
|
||||
.descriptor = descriptor,
|
||||
.in_use = true,
|
||||
.debounced_pressed = false,
|
||||
.press_start_time = 0,
|
||||
.last_change_time = 0,
|
||||
.short_press_key = short_press_key,
|
||||
.long_press_key = long_press_key,
|
||||
};
|
||||
return ERROR_NONE;
|
||||
}
|
||||
|
||||
static error_t start(Device* device) {
|
||||
const auto* config = GET_CONFIG(device);
|
||||
|
||||
auto* internal = static_cast<ButtonControlInternal*>(malloc(sizeof(ButtonControlInternal)));
|
||||
if (internal == nullptr) {
|
||||
return ERROR_OUT_OF_MEMORY;
|
||||
}
|
||||
*internal = {};
|
||||
|
||||
bool two_button_mode = config->pin_secondary.gpio_controller != nullptr;
|
||||
|
||||
error_t error = acquire_button(
|
||||
config->pin_primary,
|
||||
two_button_mode ? LV_KEY_ENTER : LV_KEY_NEXT,
|
||||
two_button_mode ? LV_KEY_ESC : LV_KEY_ENTER,
|
||||
&internal->primary
|
||||
);
|
||||
if (error != ERROR_NONE) {
|
||||
free(internal);
|
||||
return error;
|
||||
}
|
||||
|
||||
error = acquire_button(config->pin_secondary, LV_KEY_NEXT, LV_KEY_PREV, &internal->secondary);
|
||||
if (error != ERROR_NONE) {
|
||||
if (internal->primary.in_use) {
|
||||
gpio_descriptor_release(internal->primary.descriptor);
|
||||
}
|
||||
free(internal);
|
||||
return error;
|
||||
}
|
||||
|
||||
device_set_driver_data(device, internal);
|
||||
return ERROR_NONE;
|
||||
}
|
||||
|
||||
static error_t stop(Device* device) {
|
||||
auto* internal = static_cast<ButtonControlInternal*>(device_get_driver_data(device));
|
||||
|
||||
if (internal->primary.in_use) {
|
||||
gpio_descriptor_release(internal->primary.descriptor);
|
||||
}
|
||||
if (internal->secondary.in_use) {
|
||||
gpio_descriptor_release(internal->secondary.descriptor);
|
||||
}
|
||||
|
||||
free(internal);
|
||||
return ERROR_NONE;
|
||||
}
|
||||
|
||||
// endregion
|
||||
|
||||
// region KeyboardApi
|
||||
|
||||
// Long press is only distinguished from short press at release time, by how long the button
|
||||
// was held - not at the moment it's first pressed. This matches physical button behavior:
|
||||
// you can't know a press is "long" until it either ends or the threshold is reached.
|
||||
static void poll_button(const ButtonControlConfig* config, ButtonControlInternal* internal, ButtonControlButtonState* state) {
|
||||
if (!state->in_use) {
|
||||
return;
|
||||
}
|
||||
|
||||
bool high = false;
|
||||
if (gpio_descriptor_get_level(state->descriptor, &high) != ERROR_NONE) {
|
||||
return;
|
||||
}
|
||||
bool raw_pressed = config->active_low ? !high : high;
|
||||
|
||||
uint32_t now = get_millis();
|
||||
if ((now - state->last_change_time) < config->debounce_ms) {
|
||||
return;
|
||||
}
|
||||
|
||||
if (raw_pressed == state->debounced_pressed) {
|
||||
return;
|
||||
}
|
||||
state->last_change_time = now;
|
||||
state->debounced_pressed = raw_pressed;
|
||||
|
||||
if (raw_pressed) {
|
||||
state->press_start_time = now;
|
||||
return;
|
||||
}
|
||||
|
||||
// Release: decide short vs. long press by elapsed hold duration, then queue a synthetic
|
||||
// key tap (press followed by release) for the LVGL key this gesture maps to.
|
||||
uint32_t held_ms = now - state->press_start_time;
|
||||
uint32_t key = held_ms < config->long_press_ms ? state->short_press_key : state->long_press_key;
|
||||
push_pending(internal, key, true);
|
||||
push_pending(internal, key, false);
|
||||
}
|
||||
|
||||
static error_t button_control_read_key(Device* device, KeyboardKeyData* data) {
|
||||
const auto* config = GET_CONFIG(device);
|
||||
auto* internal = static_cast<ButtonControlInternal*>(device_get_driver_data(device));
|
||||
|
||||
poll_button(config, internal, &internal->primary);
|
||||
poll_button(config, internal, &internal->secondary);
|
||||
|
||||
ButtonControlPendingEvent event;
|
||||
if (pop_pending(internal, &event)) {
|
||||
data->key = event.key;
|
||||
data->pressed = event.pressed;
|
||||
data->continue_reading = internal->pending_count > 0;
|
||||
} else {
|
||||
data->key = 0;
|
||||
data->pressed = false;
|
||||
data->continue_reading = false;
|
||||
}
|
||||
|
||||
return ERROR_NONE;
|
||||
}
|
||||
|
||||
// endregion
|
||||
|
||||
static constexpr KeyboardApi button_control_api = {
|
||||
.read_key = button_control_read_key,
|
||||
};
|
||||
|
||||
Driver button_control_driver = {
|
||||
.name = "button_control",
|
||||
.compatible = (const char*[]) { "tactility,button-control", nullptr },
|
||||
.start_device = start,
|
||||
.stop_device = stop,
|
||||
.api = &button_control_api,
|
||||
.device_type = &KEYBOARD_TYPE,
|
||||
.owner = &button_control_module,
|
||||
.internal = nullptr
|
||||
};
|
||||
@@ -0,0 +1,32 @@
|
||||
// SPDX-License-Identifier: Apache-2.0
|
||||
#include <tactility/check.h>
|
||||
#include <tactility/driver.h>
|
||||
#include <tactility/module.h>
|
||||
|
||||
extern "C" {
|
||||
|
||||
extern Driver button_control_driver;
|
||||
|
||||
static error_t start() {
|
||||
/* We crash when construct fails, because if a single driver fails to construct,
|
||||
* there is no guarantee that the previously constructed drivers can be destroyed */
|
||||
check(driver_construct_add(&button_control_driver) == ERROR_NONE);
|
||||
return ERROR_NONE;
|
||||
}
|
||||
|
||||
static error_t stop() {
|
||||
/* We crash when destruct fails, because if a single driver fails to destruct,
|
||||
* there is no guarantee that the previously destroyed drivers can be recovered */
|
||||
check(driver_remove_destruct(&button_control_driver) == ERROR_NONE);
|
||||
return ERROR_NONE;
|
||||
}
|
||||
|
||||
Module button_control_module = {
|
||||
.name = "button-control",
|
||||
.start = start,
|
||||
.stop = stop,
|
||||
.symbols = nullptr,
|
||||
.internal = nullptr
|
||||
};
|
||||
|
||||
} // extern "C"
|
||||
Reference in New Issue
Block a user